format-version: 1.2 date: 29:06:2011 13:15 saved-by: Ramona auto-generated-by: OBO-Edit 2.1-beta13 subsetdef: Angiosperm "Term for angiosperms" subsetdef: Arabidopsis "Term used for Arabidopsis" subsetdef: Bryophytes "Term used for mosses, liverworts, and/or hornworts" subsetdef: Citrus "Term used for citrus" subsetdef: Gymnosperms "Term used for gymnosperms" subsetdef: Maize "Term used for maize" subsetdef: Musa "Terms used for banana" subsetdef: Poaceae "Term used for grasses" subsetdef: Potato "Term used for potato" subsetdef: Pteridophytes "Term used for ferns and allies" subsetdef: reference "reference plant structure term" subsetdef: Rice "Term used for rice" subsetdef: Tomato "Term used for tomato" subsetdef: TraitNet "Plant Functional Traits" synonymtypedef: Japanese "Japanese synonym" EXACT synonymtypedef: Plural "Plural" EXACT synonymtypedef: Spanish "Spanish synonym" EXACT default-namespace: plant_ontology remark: Derived from plant_ontology.obo version 15. ontology: po treat-xrefs-as-is_a: CARO [Term] id: PO:0000001 name: embryo proper namespace: plant_anatomy def: "An embryonic plant structure that is the body of a developing plant embryo attached to the maternal tissue in an ovule by a suspensor." [POC:rw] comment: The embryo proper is the entire embryo exclusive of the suspensor. xref: OBO_SF_PO:3132560 is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0000002 name: anther wall namespace: plant_anatomy def: "A microsporangium wall that is part of an anther." [ISBN:0471244554, ISBN:9780003686647] comment: Has an outer epidermis (exothecium) and an endothecium and may have additional layers. subset: Angiosperm subset: reference synonym: "pollen sac wall" EXACT [] is_a: PO:0025307 ! microsporangium wall relationship: part_of PO:0009066 ! anther [Term] id: PO:0000003 name: whole plant namespace: plant_anatomy def: "A plant structure which is a whole organism." [POC:curators] comment: Examples include seed PO:0009010 and embryo PO:0009009. subset: reference subset: TraitNet synonym: "gametophyte" NARROW [] synonym: "prothallium" NARROW [] synonym: "seedling" NARROW [] synonym: "sporophyte" NARROW [] xref: OBO_SF_PO:2968335 is_a: PO:0009011 ! plant structure [Term] id: PO:0000004 name: in vitro plant structure namespace: plant_anatomy def: "A plant structure that is grown or maintained in vitro." [POC:curators] comment: In vitro growth is defined as microbe-free growth in a sterile, culture environment, usually in the laboratory. An example of a sterile culture environment is growth on or in a nutrient medium in a Petri dish, culture flask or test tube. Microbes may be intentionally added to the culture environment, such as in co-culture with Agrobacterium. xref: OBO_SF_PO:2958948 is_a: PO:0009011 ! plant structure [Term] id: PO:0000005 name: cultured plant cell namespace: plant_anatomy def: "A plant cell that is grown or maintained in vitro." [POC:Curators] comment: Includes isolated plant cells and small plant cell aggregates that proliferate while suspended in sterile liquid medium or spread on a solid agar medium. synonym: "cell suspension" RELATED [] xref: OBO_SF_PO:3289997 is_a: PO:0000004 ! in vitro plant structure is_a: PO:0009002 ! plant cell [Term] id: PO:0000006 name: plant protoplast namespace: plant_anatomy def: "A cultured plant cell from which the entire plant cell wall has been removed." [POC:curators] comment: The cell wall is generally removed using polysaccharide-degrading enzymes such as cellulase, pectinase and /or xylanase. The cultured plant cell may be in suspension culture or from callus culture on solid media. xref: OBO_SF_PO:3279819 is_a: PO:0000005 ! cultured plant cell [Term] id: PO:0000007 name: leaf-derived cultured plant cell namespace: plant_anatomy def: "A cultured plant cell that was derived from leaf tissue." [POC:Curators] comment: May be derived from cultured plant callus or plant protoplast that was induced from a segment of leaf. In the case of the plant protoplast, after the re-establishment cell walls. is_a: PO:0000005 ! cultured plant cell relationship: derives_from PO:0025034 ! leaf [Term] id: PO:0000008 name: root-derived cultured plant cell namespace: plant_anatomy def: "A cultured plant cell that was derived from root tissue." [POC:curators] comment: May be derived from cultured plant callus or plant protoplasts induced from a segment of root. In the case of the plant protoplast, after the re-establishment plant cell walls. is_a: PO:0000005 ! cultured plant cell relationship: derives_from PO:0009005 ! root [Term] id: PO:0000009 name: cultured plant callus namespace: plant_anatomy def: "A plant callus grown or maintained in vitro." [POC:curators] comment: Cultured plant callus may induced to form from plant protoplasts or cultured plant cells in suspension culture. After supplementation with the appropriate plant growth regulators, further differentiation may lead to the development of plant tissues, plant organs and ultimately, a whole plant. xref: OBO_SF_PO:3280004 xref: OBO_SF_PO:3286242 is_a: PO:0000004 ! in vitro plant structure is_a: PO:0005052 ! plant callus relationship: has_part PO:0000005 ! cultured plant cell [Term] id: PO:0000010 name: cultured plant embryo namespace: plant_anatomy def: "A plant embryo that is grown or maintained in vitro." [POC:curators, TAIR:ki] comment: Includes isolated and maintained mature or immature zygotic embryos, somatic embryos or haploid embryos (derived from male gametophyte). xref: OBO_SF_PO:3289110 is_a: PO:0000004 ! in vitro plant structure is_a: PO:0009009 ! plant embryo [Term] id: PO:0000011 name: cultured somatic plant embryo namespace: plant_anatomy def: "A somatic plant embryo grown and maintained in vitro." [POC:curators, TAIR:ki] comment: Cultured somatic plant embryos are commonly induced after the formation of callus from an explant and treatment with plant growth regulators. is_a: PO:0000010 ! cultured plant embryo is_a: PO:0025302 ! somatic plant embryo relationship: develops_from PO:0006091 ! embryogenic callus [Term] id: PO:0000012 name: apical hook namespace: plant_anatomy def: "Hook-like structure which develops at the apical part of the hypocotyl in dark-grown seedlings in dicots." [TAIR:ki] subset: reference synonym: "hypocotyl hook" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: develops_from PO:0020100 ! hypocotyl relationship: part_of PO:0006341 ! primary shoot [Term] id: PO:0000013 name: cauline leaf namespace: plant_anatomy def: "Leaf or pairs/whorls of leaves borne on the stem." [TAIR:ki] comment: In Arabidopsis, refers to the leaves that are borne on the elongated inflorescence branches. xref: OBO_SF_PO:3205381 is_a: PO:0009025 ! vascular leaf [Term] id: PO:0000014 name: rosette leaf namespace: plant_anatomy def: "One of multiple leaves borne in a rosette - a group of leaves, generally borne at the base of the plant, that are separated by very short internodes." [TAIR:ki] comment: Arabidopsis, vegetative development is characterized by the production of the rosette leaves. xref: OBO_SF_PO:3205381 is_a: PO:0009025 ! vascular leaf [Term] id: PO:0000015 name: cotyledon primordium namespace: plant_anatomy def: "A phyllome primordium that will develop into a cotyledon." [POC:curators] is_a: PO:0025128 ! phyllome primordium [Term] id: PO:0000016 name: lateral root primordium namespace: plant_anatomy def: "A root primordium that is derived from a root pericycle and will develop into a lateral root." [POC:curators] is_a: PO:0005029 ! root primordium relationship: derives_from PO:0006203 ! pericycle [Term] id: PO:0000017 name: leaf primordium namespace: plant_anatomy def: "A phyllome primordium that will develop into a leaf." [POC:curators] comment: Emerges as an outgrowth in the shoot apex (flanking the meristem). is_a: PO:0025128 ! phyllome primordium relationship: part_of PO:0000037 ! shoot apex [Term] id: PO:0000018 name: ovule primordium namespace: plant_anatomy def: "A primordium that will develop into an ovule." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0000019 name: gynoecium primordium namespace: plant_anatomy def: "A primordium that will develop into a gynoecium." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0000020 name: starch sheath cell namespace: plant_anatomy def: "OBSOLETE. Cells characterized by conspicuous and rather stable accumulation of starch." [ISBN:044174520] comment: Uninformative definition is_obsolete: true [Term] id: PO:0000021 name: petal primordium namespace: plant_anatomy def: "A phyllome primordium that will develop into a petal." [POC:curators] is_a: PO:0025128 ! phyllome primordium [Term] id: PO:0000022 name: cuticle namespace: plant_anatomy def: "A layer of fatty material, cutin, rather impervious to water, located on the outer walls of epidermal cells." [ISBN:0471245208] is_a: PO:0025161 ! portion of plant substance [Term] id: PO:0000023 name: casparian strip namespace: plant_anatomy def: "OBSOLETE: A band-like wall formation within primary walls that contains suberin and lignin; typical of endodermal cells in roots, in which it occurs in radial and transverse anticlinal walls." [ISBN:0471245208] comment: Comment: this term is now available in the cellular_component aspect of the Gene Ontology (GO:0048226). is_obsolete: true [Term] id: PO:0000024 name: filiform apparatus namespace: plant_anatomy def: "OBSOLETE: A complex of cell wall invaginations in a synergid cell similar to those in transfer cells." [ISBN:0471245208] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043680. subset: reference is_obsolete: true [Term] id: PO:0000025 name: root tip namespace: plant_anatomy def: "The portion of the root including the meristem and root cap." [TAIR:ki] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009005 ! root [Term] id: PO:0000026 name: primary root tip namespace: plant_anatomy def: "The portion of the primary root including the meristem and root cap." [TAIR:ki] is_a: PO:0000025 ! root tip relationship: part_of PO:0020127 ! primary root [Term] id: PO:0000027 name: lateral root tip namespace: plant_anatomy def: "The portion of the lateral root including the meristem and root cap." [TAIR:ki] is_a: PO:0000025 ! root tip relationship: part_of PO:0020121 ! lateral root [Term] id: PO:0000028 name: pollen tube tip namespace: plant_anatomy def: "Tip portion of the pollen tube that is rapidly growing." [TAIR:ki] comment: This term was made obsolete because it is a subcellular component. See GO for the term pollen tube tip (GO:0090404). Since a pollen tube tip is part_of a pollen tube, which is part of a pollen cell, annotations for pollen tube tip may also go to the more general term pollen tube cell (PO:0025195). xref: OBO_SF_PO:3115812 is_obsolete: true consider: PO:0025195 [Term] id: PO:0000029 name: root hair tip namespace: plant_anatomy def: "Tip portion of an outgrowth of a root epidermal cell." [TAIR:ki] comment: This term was made obsolete because it is a subcellular component. Root hair tip (GO:0035619) has been added to GO. To annotate to a cell that has a root hair tip, consider root hair cell (PO:0000256). xref: OBO_SF_PO:3115810 is_obsolete: true consider: PO:0000256 [Term] id: PO:0000030 name: septum namespace: plant_anatomy def: "A collective organ part structure composed of two or more layers of various tissues that is a partition that divides a cavity formed by the fusion of two or more organs." [POC:curators] comment: A septum is formed by the fusion of the walls of two adjacent organs (ovary walls or anther walls), for example, the partition between two sections of an orange, seen in cross-section. xref: OBO_SF_PO:3177333 is_a: PO:0025269 ! collective organ part structure [Term] id: PO:0000031 name: lenticel namespace: plant_anatomy def: "A portion of ground tissue composed of a loosely-packed mass of cork cells occurring especially in the young stem, bark or even leaf of a plant, visible on the surface as a raised, often powdery-appearing spot." [ISBN:0471245208] comment: Gas can be exchanged through the lenticel. subset: TraitNet is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0000032 name: tetrad of microspores namespace: plant_anatomy def: "A portion of plant tissue consisting of four microspores that remained joined together shortly after meiosis. Each cell will give rise to a male gametophyte." [POC:rw] subset: reference xref: OBO_SF_PO:3132503 is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0020047 ! microsporocyte relationship: has_part PO:0020048 ! microspore [Term] id: PO:0000033 name: fruit valve namespace: plant_anatomy def: "A valve that is a part of a fruit that splits apart when the fruit dehisces." [POC:rw] comment: A valve may develop from an entire carpel (as in Brassicaceae) or from part of a carpel (as in Fabaceae). subset: Arabidopsis xref: OBO_SF_PO:3132512 is_a: PO:0025228 ! valve relationship: part_of PO:0009001 ! fruit [Term] id: PO:0000034 name: vascular system namespace: plant_anatomy def: "A plant structure that includes the totality of the portions of vascular tissue in their specific arrangement in a whole plant or in a constituent part thereof." [ISBN:0-7167-1007-2, ISBN:0471245208, POC:curators] comment: The vascular system may also contain portions of ground tissue. subset: TraitNet is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant relationship: part_of PO:0000003 ! whole plant [Term] id: PO:0000035 name: cotyledon vascular system namespace: plant_anatomy def: "A vascular system that is part of a cotyledon." [TAIR:ki] is_a: PO:0000034 ! vascular system relationship: part_of PO:0020030 ! cotyledon [Term] id: PO:0000036 name: leaf vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a leaf." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0000037 name: shoot apex namespace: plant_anatomy def: "A shoot axis that is the most distal part of a shoot system and has as parts a shoot apical meristem and the youngest leaf primordia." [POC:curators] subset: reference xref: OBO_SF_PO:3132475 is_a: PO:0025029 ! shoot axis [Term] id: PO:0000038 name: primary endosperm cell namespace: plant_anatomy def: "Cell produced by the fusion of sperm cell nucleus and two polar nuclei of the central cell (or diploid secondary endosperm nucleus, in cases where two polar nuclei fuse together before double fertilization). The first cell of the endosperm, often tripoid." [TAIR:ki] is_a: PO:0025026 ! megagametophyte cell relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0000039 name: shoot axis vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a shoot axis." [POC:curators] comment: Can occur in a stem or branch. synonym: "branch vascular system" NARROW [] synonym: "stem vascular system" NARROW [] is_a: PO:0000034 ! vascular system relationship: part_of PO:0025198 ! shoot axis stele relationship: part_of PO:0025205 ! shoot system vascular system [Term] id: PO:0000040 name: adventitious root nodule namespace: plant_anatomy def: "Enlargement or swelling at position of dormant adventitious root primordium (on the stem), inhabited by nitrogen-fixing bacteria." [TAIR:ki] comment: Unlike the root nodules, these contain functioning chloroplasts in the nodule cortex and are therefore capable of carbon fixation. Note: stem nodule is commonly used term for this structure, although the nodules are formed at positions of dormant adventitious root primordia. synonym: "stem primordium" RELATED [] xref: OBO_SF_PO:3132479 is_a: PO:0003023 ! root nodule relationship: part_of PO:0000042 ! shoot-borne root [Term] id: PO:0000041 name: epidermal cork cell namespace: plant_anatomy def: "One of the two types of short cells in the epidermis of grasses and bamboos. It is usually paired with silica cell." [TAIR:ki] comment: Developmentally different from periderm cork cell (i.e., phellem), produced by cork cambium. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025). subset: Poaceae is_a: PO:0004718 ! short cell [Term] id: PO:0000042 name: shoot-borne root namespace: plant_anatomy alt_id: PO:0003007 alt_id: PO:0020129 def: "A post-embryonic root that develops from shoot tissue." [GR:pj, TAIR:ki] subset: reference subset: TraitNet synonym: "adventitious root" BROAD [] synonym: "aerial root" NARROW [] synonym: "stilt root" NARROW [] is_a: PO:0009005 ! root [Term] id: PO:0000043 name: crown root namespace: plant_anatomy def: "Adventitious root formed at the base of the growing stem (known as a crown)." [TAIR:ki] subset: reference is_a: PO:0003005 ! nodal root [Term] id: PO:0000044 name: prop root namespace: plant_anatomy def: "Adventitious root formed at stem nodes above the ground and growing directly into the soil." [TAIR:ki] comment: This term is perhaps best defined functionally to prop the plant up. subset: reference subset: TraitNet synonym: "brace root" RELATED [] is_a: PO:0003005 ! nodal root [Term] id: PO:0000045 name: embryo root namespace: plant_anatomy def: "A root that is initiated in a developing embryo." [TAIR:ki] subset: reference synonym: "embryonic root" EXACT [] is_a: PO:0009005 ! root [Term] id: PO:0000046 name: seminal root namespace: plant_anatomy def: "A root formed within the scutellar node of the embryo in some monocotyledonous plants." [TAIR:ki] subset: reference synonym: "lateral seminal root" RELATED [] synonym: "scutellar nodal root" RELATED [] synonym: "secondary root" RELATED [] is_a: PO:0000045 ! embryo root is_a: PO:0003005 ! nodal root [Term] id: PO:0000047 name: leaf lamina epidermis namespace: plant_anatomy def: "A portion of leaf epidermis that is part of a leaf lamina." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006016 ! leaf epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0020039 ! leaf lamina relationship: part_of PO:0020039 ! leaf lamina [Term] id: PO:0000048 name: leaf lamina vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a leaf lamina." [POC:rw] is_a: PO:0000034 ! vascular system relationship: part_of PO:0000036 ! leaf vascular system relationship: part_of PO:0020039 ! leaf lamina [Term] id: PO:0000049 name: leaf lamina abaxial epidermis namespace: plant_anatomy def: "A portion of leaf lamina epidermis that covers the abaxial/lower surface of a leaf lamina." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0000047 ! leaf lamina epidermis is_a: PO:0006019 ! leaf abaxial epidermis [Term] id: PO:0000050 name: leaf lamina adaxial epidermis namespace: plant_anatomy def: "A portion of leaf lamina epidermis that covers the adaxial/upper surface of a leaf lamina." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0000047 ! leaf lamina epidermis is_a: PO:0006018 ! leaf adaxial epidermis [Term] id: PO:0000051 name: petiole epidermis namespace: plant_anatomy def: "A portion of leaf epidermis that is part of a petiole." [POC:rw, TAIR:ki] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006016 ! leaf epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0020038 ! petiole relationship: part_of PO:0020038 ! petiole [Term] id: PO:0000052 name: petiole vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a leaf petiole." [POC:rw] is_a: PO:0000034 ! vascular system relationship: part_of PO:0000036 ! leaf vascular system relationship: part_of PO:0020038 ! petiole [Term] id: PO:0000053 name: petiole cortex namespace: plant_anatomy def: "A portion of ground tissue that is part of a cortex and part of the petiole." [POC:curators, TAIR:ki] synonym: "portion of petiole corex tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex relationship: part_of PO:0020038 ! petiole [Term] id: PO:0000054 name: petal vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a petal." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0005017 ! flower vascular system relationship: part_of PO:0009032 ! petal [Term] id: PO:0000055 name: bud namespace: plant_anatomy def: "An undeveloped shoot system." [POC:curators] subset: TraitNet xref: OBO_SF_PO:3016634 is_a: PO:0009006 ! shoot system [Term] id: PO:0000056 name: flower bud namespace: plant_anatomy def: "A bud that develops into a flower." [POC:curators] subset: TraitNet synonym: "floral bud" EXACT [] is_a: PO:0025084 ! reproductive bud [Term] id: PO:0000057 name: inflorescence bud namespace: plant_anatomy def: "A bud that develops into an inflorescence." [POC:curators] subset: Musa synonym: "male bud" NARROW [CO_125:0000049 "Term used for Musa to describe the usually persistent bud when it is only composed of bracts with male flowers."] xref: OBO_SF_PO:3147067 is_a: PO:0025084 ! reproductive bud [Term] id: PO:0000058 name: vegetative bud namespace: plant_anatomy def: "A bud that develops into a shoot system that has as organ parts only vegetative organs." [POC:curators] xref: OBO_SF_PO:3020771 is_a: PO:0000055 ! bud [Term] id: PO:0000059 name: root initial cell namespace: plant_anatomy def: "An initial cell that is part of a root apical meristem and by division gives rise to two cells, one of which remains in the meristem, while the other is produces different root cells." [TAIR:ki] synonym: "root stem cell" RELATED [] is_a: PO:0004011 ! initial cell disjoint_from: PO:0000295 ! cambial initial disjoint_from: PO:0000349 ! epidermal initial disjoint_from: PO:0030067 ! protonema side branch initial relationship: part_of PO:0020149 ! quiescent center [Term] id: PO:0000060 name: root cortex-endodermis initial cell namespace: plant_anatomy def: "A root initial cell that produces root cortex and endodermis. In direct contact with quiescent center." [TAIR:ki] synonym: "root cortex-endodermis stem cell" EXACT [] is_a: PO:0000059 ! root initial cell [Term] id: PO:0000061 name: lateral root-cap-epidermal initial cell namespace: plant_anatomy def: "A root initial cell that produces lateral root-cap cells and root epidermis." [POC:curators] synonym: "lateral root-cap-epidermal stem cell" EXACT [] is_a: PO:0000059 ! root initial cell [Term] id: PO:0000062 name: stomatal initial namespace: plant_anatomy def: "An epidermal initial that undergoes several rounds of uneven division, each time giving rise to a larger daughter cell that differentiates into an epidermal ground cell and a smaller daughter cell that remains meristematic, until the meristematic cell differentiates into a guard mother cell." [POC:rw] synonym: "stomatal initial cell" EXACT [] synonym: "stomatal meristemoid" EXACT [] xref: OBO_SF_PO:3112108 is_a: PO:0000349 ! epidermal initial created_by: Ramona creation_date: 2011-02-02T09:01:50Z [Term] id: PO:0000063 name: leaf procambial cell namespace: plant_anatomy def: "A procambial cell that is part of a leaf procambium." [POC:rw] comment: Leaf procambial cells may be derived from the shoot apical meristem or can arise throughout the mesophyll of a developing leaf. synonym: "dispersed meristematic cell" EXACT [PMCID:PMC1550771] synonym: "DMC" EXACT [PMCID:PMC1550771] synonym: "leaf procambium cell" EXACT [] is_a: PO:0025258 ! procambial cell relationship: part_of PO:0025259 ! leaf procambium created_by: Ramona creation_date: 2011-02-02T11:45:49Z [Term] id: PO:0000064 name: xylem pole pericycle cell namespace: plant_anatomy def: "A pericycle cell that is adjacent to the protoxylem of a vascular bundle." [PMID:17993548] comment: Xylem pole pericycle cells are cells in the pericycle that are adjacent to the protoxylem pole of a vascular bundle. Pericycle cells that are adjacent to other xylem cells in the vascular bundle are not considered xylem pole pericycle cells. Xylem pole pericycle cells may retain some meristematic activity and are the site of lateral root initiation. xref: OBO_SF_PO:3124791 is_a: PO:0025261 ! pericycle cell created_by: Ramona creation_date: 2011-02-02T11:52:34Z [Term] id: PO:0000065 name: phloem pole pericycle cell namespace: plant_anatomy def: "A pericycle cell that is adjacent to the protophloem of a vascular bundle." [PMID:17993548] comment: Phloem pole pericycle cells are cells in the pericycle that are adjacent to the protophloem pole of a vascular bundle. Pericycle cells that are adjacent to other phloem cells in the vascular bundle are not considered phloem pole pericycle cells. Phloem pole pericycle cells are distinct from xylem pole pericycle cells in that they display cytoplasmic characteristics of a more differentiated status. xref: OBO_SF_PO:3124791 is_a: PO:0025261 ! pericycle cell created_by: Ramona creation_date: 2011-02-02T11:55:06Z [Term] id: PO:0000066 name: epithem cell namespace: plant_anatomy def: "A parenchyma cell of the mesophyll of a hydathode found between the xylem endings and the epidermis." [ISBN:0471245208, PMID:12662305] comment: Proposed to be involved in the retrieval of solutes from the xylem sap. xref: CL:0000074 is_a: PO:0000074 ! parenchyma cell relationship: part_of PO:0005660 ! hydathode [Term] id: PO:0000071 name: companion cell namespace: plant_anatomy def: "A specialized parenchyma cell associated with a sieve-tube member in angiosperm phloem and arising from the same mother cell as the sieve-tube member." [ISBN:0879015322] subset: TraitNet xref: CL:0000284 is_a: PO:0000074 ! parenchyma cell relationship: part_of PO:0005043 ! secondary phloem relationship: part_of PO:0006075 ! primary phloem [Term] id: PO:0000074 name: parenchyma cell namespace: plant_anatomy def: "A relatively unspecialized ground tissue cell with a nucleate protoplast." [ISBN:0471245208] subset: TraitNet is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0005421 ! parenchyma [Term] id: PO:0000075 name: collenchyma cell namespace: plant_anatomy def: "An elongated plant cell with unevenly thickened non-lignified primary walls that is alive at maturity." [ISBN:0471245208] subset: TraitNet is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0005423 ! collenchyma [Term] id: PO:0000076 name: chlorenchyma cell namespace: plant_anatomy def: "A parenchyma cell containing chloroplasts; a component of leaf mesophyll and other green parenchyma tissue." [ISBN:0471245208] subset: TraitNet xref: CL:0000472 is_a: PO:0000074 ! parenchyma cell relationship: part_of PO:0005426 ! chlorenchyma [Term] id: PO:0000077 name: sclerenchyma cell namespace: plant_anatomy def: "Usually dead cell variable in form and size, with more or less thick, often lignified, secondary walls." [ISBN:0471245208] subset: TraitNet xref: CL:0000276 is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0005427 ! sclerenchyma [Term] id: PO:0000078 name: transfer cell namespace: plant_anatomy def: "A cell with wall ingrowths (or invaginations) that increase the surface of the plasmalemma." [ISBN:0471245208] comment: Appear to be specialized for short-distance transfer of solutes. Transfer cells can occur anywhere there is a junction between two individuals, such as between a sporophyte and a gametophyte, or between a parasitic plant and its host. xref: CL:0000370 xref: OBO_SF_PO:3172685 is_a: PO:0025030 ! ground tissue cell [Term] id: PO:0000079 name: fusiform initial namespace: plant_anatomy alt_id: PO:0000275 def: "An elongated cambial initial cell with approximately wedge-shaped ends that is part of the vascular cambium and gives rise to axial cells." [ISBN:0471245208] synonym: "fusiform initial cell" EXACT [] synonym: "xylem initial" RELATED [] synonym: "xylem mother cell" RELATED [] xref: CL:0000009 is_a: PO:0000295 ! cambial initial [Term] id: PO:0000081 name: axial cell namespace: plant_anatomy def: "A vascular cell derived from the fusiform cambial initial and oriented with its longest diameter parallel with the main axis of stem or root." [ISBN:0471245208] comment: These cells make up the axial system, also known as vertical or longitudinal system. subset: TraitNet xref: CL:0000363 is_a: PO:0009002 ! plant cell relationship: develops_from PO:0000079 ! fusiform initial [Term] id: PO:0000082 name: ray initial namespace: plant_anatomy def: "A cambial initial cell that gives rise to ray cells of the secondary xylem and secondary phloem." [ISBN:0471245208] synonym: "ray initial cell" EXACT [] xref: CL:0000316 is_a: PO:0000295 ! cambial initial [Term] id: PO:0000084 name: plant sperm cell namespace: plant_anatomy alt_id: PO:0020098 def: "A gamete produced by an antheridium or a microgametophyte." [POC:curators] comment: The sperm (microgamete) is usually smaller than the egg (megagamete). Male gametes may be defined as the motile gamete, rather than the smaller gamete. subset: reference synonym: "male gamete" EXACT [] synonym: "microgamete" EXACT [] synonym: "sperm nucleus" RELATED [] xref: CL:0000366 is_a: PO:0025006 ! gamete relationship: develops_from PO:0020097 ! generative cell [Term] id: PO:0000112 name: shoot axis epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that is part of a shoot axis." [POC:curators] comment: Can occur on a stem or branch. synonym: "branch epidermis" NARROW [] synonym: "culm epidermis" RELATED [] synonym: "stem epidermis" NARROW [] is_a: PO:0006035 ! shoot epidermis relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0000115 name: socket cell namespace: plant_anatomy def: "A shoot epidermal cell that surrounds a trichome and provides its support." [ISBN:0471245208, PMID:15319479] synonym: "cell located at the base of the trichome" RELATED [] synonym: "trichome support cell" RELATED [] xref: CL:0000297 is_a: PO:0025165 ! shoot epidermal cell disjoint_from: PO:0000332 ! epidermal pavement cell relationship: develops_from PO:0000349 ! epidermal initial [Term] id: PO:0000146 name: abscission zone namespace: plant_anatomy def: "A portion of plant tissue that is part of a plant structure that has as parts a separation layer and a protective layer and is involved in the abscission of the structure." [ISBN:047124529, POC:curators] synonym: "abscission layer" RELATED [] xref: GO:0009838 "abscission" is_a: PO:0009007 ! portion of plant tissue [Term] id: PO:0000191 name: synergid namespace: plant_anatomy def: "Cell, usually two in number, in the micropylar end of the embryo sac of angiosperms associated with the egg in the egg apparatus." [ISBN:047125208, TAIR:ki] subset: Angiosperm subset: reference xref: CL:0000288 is_a: PO:0025026 ! megagametophyte cell relationship: part_of PO:0020096 ! egg apparatus [Term] id: PO:0000198 name: free nuclear endosperm namespace: plant_anatomy def: "An endosperm in which at least the first karyokinesis is not followed by cytokinesis." [ISBN:0080374913, ISBN:0471245194] synonym: "cenocytic endosperm" RELATED [] synonym: "coenocytic endosperm" RELATED [] synonym: "nuclear endosperm" RELATED [] is_a: PO:0009089 ! endosperm [Term] id: PO:0000199 name: cellular endosperm namespace: plant_anatomy def: "Endosperm in which the first karyokinesis event is accompanied by cytokinesis." [ISBN:0080374913, ISBN:0471245194] is_a: PO:0009089 ! endosperm [Term] id: PO:0000200 name: micropylar endosperm namespace: plant_anatomy def: "A portion of plant tissue that is the region of the endosperm closest to the micropyle of the seed." [TAIR:lr] synonym: "micropylar region" RELATED [] synonym: "portion of micropylar endosperm" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0000201 name: chalazal cyst namespace: plant_anatomy def: "A portion of plant tissue that is the part of the endosperm nearest the chalazal region of the ovule and forming a cyst-like structure." [ISBN:047124529, TAIR:lr] comment: Not in current literature. More like an attribute. synonym: "chalazal endosperm cyst" RELATED [] synonym: "portion of chalazal cyst" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0000207 name: nectary epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that is part of a nectary." [POC:rw] is_a: PO:0006035 ! shoot epidermis relationship: part_of PO:0009035 ! nectary [Term] id: PO:0000223 name: shoot axis cortex namespace: plant_anatomy def: "A portion of ground tissue that is part of a cortex and part of a shoot axis." [ISBN:047124529, POC:curators] comment: Can occur in a stem or branch. subset: TraitNet synonym: "branch cortex" NARROW [] synonym: "portion of shoot axis cortex tissue" EXACT [] synonym: "stem cortex" NARROW [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0000224 name: central zone namespace: plant_anatomy def: "An area of densely packed cells in the shoot apex that divide infrequently." [ISBN:0521288959, TAIR:lr] comment: Functions as a population of stem cells that replenishes the meristem. synonym: "central initiation zone" RELATED [] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0000225 name: peripheral zone namespace: plant_anatomy def: "Organogenic region of the meristem,  characterized by higher rates of cell division." [ISBN:0521288959, TAIR:lr] synonym: "peripheral meristem" RELATED [] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0000226 name: rib zone namespace: plant_anatomy def: "The region of the shoot apical meristem that lies below the central zone and is flanked by the peripheral zone." [ISBN:0521288959, TAIR:lr] synonym: "file meristem" RELATED [] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0000229 name: flower meristem namespace: plant_anatomy def: "A portion of meristem tissue that gives rise to the floral organs." [GR:pj] synonym: "floral apical meristem" RELATED [] synonym: "floral meristem" EXACT [] is_a: PO:0009013 ! meristem [Term] id: PO:0000230 name: inflorescence meristem namespace: plant_anatomy def: "A meristem that gives rise to an inflorescence." [GR:pj] is_a: PO:0009013 ! meristem relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0000232 name: axillary bud meristem namespace: plant_anatomy def: "A shoot meristem formed in the axil of the leaf." [TAIR:lr] synonym: "axillary meristem" RELATED [] is_a: PO:0006079 ! shoot meristem [Term] id: PO:0000244 name: functional megaspore namespace: plant_anatomy def: "The megaspore(s) that forms the embryo sac." [TAIR:lr] xref: CL:0000433 is_a: PO:0020019 ! megaspore [Term] id: PO:0000245 name: degenerate megaspore namespace: plant_anatomy def: "In monosporic and bisporic megasporogenesis: the megaspore(s) that would not participate in megagametogenesis." [TAIR:lr] xref: CL:0000475 is_a: PO:0020019 ! megaspore [Term] id: PO:0000252 name: endodermis namespace: plant_anatomy alt_id: PO:0006064 def: "A portion of ground tissue that is the inner most layer of a cortex and has a casparian strip in its anticlinal cell walls." [ISBN:047124529, POC:curators] comment: Forms a sheath around the vascular system. It may have secondary walls later, part_of cortex. synonym: "endodermoid" RELATED [] synonym: "portion of endodermal tissue" EXACT [] synonym: "portion of epidermis tissue" EXACT [] xref: SGF:3016668 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex [Term] id: PO:0000256 name: root hair cell namespace: plant_anatomy def: "A root epidermal cell with a simple extension that is concerned with absorption of soil solution." [ISBN:0471245208] comment: This term is for an entire epidermal cell that contains a root hair extension. To describe only the cell extension, see root hair (GO:0035618) or root hair tip (GO:0035619). subset: TraitNet is_a: PO:0025164 ! root epidermal cell relationship: develops_from PO:0000262 ! trichoblast [Term] id: PO:0000258 name: root cortex namespace: plant_anatomy alt_id: PO:0003010 def: "A portion of ground tissue that is part of a cortex and part of a root." [ISBN:047125208, POC:curators] comment: In dicots and gymnosperms, the cortex consists of mainly parenchyma cells. In monocots sclerenchyma develops in addition to parenchyma. subset: TraitNet synonym: "portion of root cortex tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex relationship: part_of PO:0009005 ! root [Term] id: PO:0000262 name: trichoblast namespace: plant_anatomy def: "A root epidermal cell that is the smaller cell produced by the asymmetric division of an epidermal intial and gives rise to a root hair." [ISBN:0471245208] synonym: "hair cell" RELATED [] xref: CL:0000299 is_a: PO:0025164 ! root epidermal cell relationship: develops_from PO:0000349 ! epidermal initial [Term] id: PO:0000263 name: atrichoblast namespace: plant_anatomy def: "A root epidermal cell that is formed after asymmetric division of an epidermal initial and does not give rise to a root hair." [ISBN:0387987819] synonym: "non-hair cell" RELATED [] xref: CL:0000332 is_a: PO:0025164 ! root epidermal cell relationship: develops_from PO:0000349 ! epidermal initial [Term] id: PO:0000272 name: protoxylem namespace: plant_anatomy def: "A portion of xylem tissue composed of any of the first formed elements of the primary xylem." [ISBN:047125208] synonym: "portion of protoxylem tissue" EXACT [] is_a: PO:0005352 ! xylem relationship: part_of PO:0005849 ! primary xylem [Term] id: PO:0000273 name: xylem element namespace: plant_anatomy def: "A cell making up xylem tissue." [ISBN:0471245208] subset: TraitNet xref: CL:0000298 is_a: PO:0000081 ! axial cell [Term] id: PO:0000274 name: xylem fiber namespace: plant_anatomy def: "A fiber in xylem." [ISBN:0471245208] subset: TraitNet is_a: PO:0000273 ! xylem element relationship: part_of PO:0005848 ! secondary xylem [Term] id: PO:0000282 name: trichome namespace: plant_anatomy alt_id: PO:0004510 def: "A unicellular or multicellular plant structure that forms a non-sclerified outgrowth from the epidermis." [POC:curators] comment: This class is the union of unicellular trichome [narrow synonym of trichome cell (PO:0008030)] and multicellular trichome (PO:0025162). subset: TraitNet synonym: "non-secretory trichome" EXACT [] xref: CL:0000282 is_a: PO:0009011 ! plant structure relationship: develops_from PO:0000349 ! epidermal initial relationship: part_of PO:0005679 ! epidermis [Term] id: PO:0000283 name: idioblast namespace: plant_anatomy def: "A plant cell that markedly differs in form, size, or contents from other cells in the same tissue." [ISBN:0471245208] comment: Often contains deposit of minerals or products of secondary metabolism. May have a specialized function. xref: OBO_SF_PO:3301116 is_a: PO:0009002 ! plant cell [Term] id: PO:0000284 name: subsidiary cell namespace: plant_anatomy alt_id: PO:0000296 def: "An epidermal cell associated with a stoma and at least morphologically distinguishable from the other epidermal cells." [ISBN:047124520] synonym: "accessory cell" RELATED [] xref: CL:0000270 is_a: PO:0025165 ! shoot epidermal cell disjoint_from: PO:0000332 ! epidermal pavement cell relationship: part_of PO:0002000 ! stomatal complex [Term] id: PO:0000289 name: sieve tube member namespace: plant_anatomy alt_id: PO:0000286 def: "One of the series of cells that make up a sieve tube; it shows a more or less pronounced differentiation between sieve plates (wide pores) and lateral sieve areas (narrow pores)." [ISBN:0471245208] comment: Also sieve tube element and the obsolete sieve tube segment. Occurs in the sporophytic phase of a plant life cycle. subset: TraitNet synonym: "sieve element" RELATED [] synonym: "sieve tube element" RELATED [] xref: CL:0000268 xref: CL:0000543 is_a: PO:0000081 ! axial cell disjoint_from: PO:0025033 ! leptoid relationship: part_of PO:0005043 ! secondary phloem relationship: part_of PO:0006075 ! primary phloem [Term] id: PO:0000290 name: tracheary element namespace: plant_anatomy def: "General term for any water conducting cell, tracheid or vessel member." [ISBN:0471245208] comment: Occurs in the sporophytic phase of a plant life cycle. subset: TraitNet xref: CL:0000672 is_a: PO:0000273 ! xylem element disjoint_from: PO:0025032 ! hydroid relationship: part_of PO:0005848 ! secondary xylem relationship: part_of PO:0005849 ! primary xylem [Term] id: PO:0000293 name: guard cell namespace: plant_anatomy def: "One of a pair of cells flanking the stomatal pore." [ISBN:0471245208] comment: They cause the opening and closing of the pore by changes in turgor. subset: TraitNet xref: CL:0000292 is_a: PO:0025165 ! shoot epidermal cell disjoint_from: PO:0000332 ! epidermal pavement cell relationship: develops_from PO:0000351 ! guard mother cell relationship: part_of PO:0002000 ! stomatal complex [Term] id: PO:0000295 name: cambial initial namespace: plant_anatomy alt_id: PO:0000080 def: "An initial cell that is part of the vascular or cork cambium and by periclinal divisions produce cells to the outside or inside of the cambial axis." [POC:curators] synonym: "cambial cell" EXACT [] synonym: "cambial initial cell" EXACT [] xref: CL:0000272 is_a: PO:0004011 ! initial cell disjoint_from: PO:0000059 ! root initial cell disjoint_from: PO:0000349 ! epidermal initial disjoint_from: PO:0030067 ! protonema side branch initial relationship: part_of PO:0005598 ! vascular cambium [Term] id: PO:0000301 name: tracheid namespace: plant_anatomy def: "In the xylem, a dead elongated water-conducting cell in which at least the middle lamella of the end walls remains intact." [APWeb:Glossary] subset: TraitNet xref: CL:0000331 is_a: PO:0000290 ! tracheary element [Term] id: PO:0000309 name: nectary parenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a nectary." [POC:rw] is_a: PO:0009035 ! nectary relationship: part_of PO:0005421 ! parenchyma [Term] id: PO:0000332 name: epidermal pavement cell namespace: plant_anatomy def: "A shoot epidermal cell that is relatively unspecialized at maturity." [POC:curators] comment: May have sinuous anticlinal cell walls that overall give a jigsaw like appearance to the epidermis. Pavement cells are epidermal cells that are not directly associated with a stomatal complex or trichome at maturity, but they share similar developmental origins. xref: CL:0000400 xref: OBO_SF_PO:3139280 is_a: PO:0025165 ! shoot epidermal cell disjoint_from: PO:0000115 ! socket cell disjoint_from: PO:0000284 ! subsidiary cell disjoint_from: PO:0000293 ! guard cell disjoint_from: PO:0008030 ! trichome cell relationship: develops_from PO:0000349 ! epidermal initial [Term] id: PO:0000349 name: epidermal initial namespace: plant_anatomy def: "An initial cell that is part of an epidermis and gives rise to specialized cell types of the epidermis." [TAIR:lr] synonym: "epidermal initial cell" EXACT [] xref: CL:0000538 is_a: PO:0004011 ! initial cell disjoint_from: PO:0000059 ! root initial cell disjoint_from: PO:0000295 ! cambial initial disjoint_from: PO:0030067 ! protonema side branch initial relationship: part_of PO:0005679 ! epidermis [Term] id: PO:0000351 name: guard mother cell namespace: plant_anatomy def: "A shoot epidermal cell that divides to produce the guard cells." [ISBN:0471245208] xref: CL:0000262 is_a: PO:0025165 ! shoot epidermal cell relationship: develops_from PO:0000062 ! stomatal initial [Term] id: PO:0000352 name: myrosin cell namespace: plant_anatomy def: "A cell containing glucosinolates (\"mustard oil glucosides\") and myrosinases, enzymes hydrolyzing the glucosinolates." [ISBN:0471245208] xref: CL:0000368 is_a: PO:0025030 ! ground tissue cell [Term] id: PO:0000353 name: passage cell namespace: plant_anatomy def: "A ground tissue cell that is part of an exodermis or an endodermis and remains thin walled when the associated cells develop thick secondary walls." [ISBN:0471245208] xref: CL:0000245 is_a: PO:0025030 ! ground tissue cell [Term] id: PO:0000355 name: fiber tracheid namespace: plant_anatomy def: "A fiber-like tracheid in the secondary xylem; commonly thick walled, with pointed ends and bordered pits that have lenticular to slit-like apertures." [ISBN:0471245208] xref: CL:0000258 is_a: PO:0000274 ! xylem fiber [Term] id: PO:0000372 name: metaxylem namespace: plant_anatomy def: "A portion of xylem tissue that is part of the primary xylem and differentiates after the protoxylem and before the secondary xylem, if any of the latter is formed." [ISBN:047125208] synonym: "portion of metaxylem tissue" EXACT [] is_a: PO:0005352 ! xylem relationship: part_of PO:0005849 ! primary xylem [Term] id: PO:0000373 name: mucilage cell namespace: plant_anatomy def: "OBSOLETE. Cell containing mucilages or gums or similar carbohydrate material characterized by the property of swelling in water." [ISBN:0471245208] comment: Functional term is_obsolete: true [Term] id: PO:0000400 name: phloem mother cell namespace: plant_anatomy def: "A cambial initial cell which is destined to differentiate into secondary phloem." [POC:curators] comment: Phloem islands can be formed in the middle of the xylem. xref: CL:0000264 is_a: PO:0000295 ! cambial initial relationship: part_of PO:0005043 ! secondary phloem [Term] id: PO:0000423 name: zygote namespace: plant_anatomy def: "Diploid cell produced by the fusion of sperm cell nucleus and egg cell." [TAIR:ki] xref: CL:0000365 is_a: PO:0009002 ! plant cell [Term] id: PO:0000431 name: megasporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) megaspores." [ISBN:0471245208] synonym: "megaspore mother cell" EXACT [] synonym: "MMC" EXACT [] xref: CL:0000320 is_a: PO:0006204 ! sporocyte relationship: develops_from PO:0006015 ! female archesporial cell relationship: part_of PO:0025201 ! megasporangium [Term] id: PO:0002000 name: stomatal complex namespace: plant_anatomy def: "A portion of shoot epidermis that has as parts two guard cells and a stomatal pore. May also contain subsidiary cells." [ISBN:0471245208] subset: TraitNet synonym: "stoma" BROAD [] synonym: "stomata" BROAD [] xref: OBO_SF_PO:3132410 is_a: PO:0006035 ! shoot epidermis [Term] id: PO:0002001 name: papillae namespace: plant_anatomy def: "A soft protuberance on an epidermal cell of the stigma." [ISBN:0471245208] comment: This terms was made obsolete because it is a sub-cellular compartment. Plant cell papilla (GO:0090395), leaf papilla (GO:0090396), and stigma papilla (GO:0090397) have been added to GO. To annotate to a cell that has a papilla, consider papilla cell (PO:0025166), leaf papilla cell (PO:0025167), or stigma papilla cell (PO:0025168). subset: reference xref: OBO_SF_PO:3115430 is_obsolete: true consider: PO:0025166 consider: PO:0025167 consider: PO:0025168 [Term] id: PO:0002002 name: embryo basal cell namespace: plant_anatomy def: "A plant cell that is the lower-most cell formed after the first division of the zygote and is part of an embryo." [ISBN:0471245208] synonym: "embryonic basal cell" EXACT [] xref: CL:0000646 is_a: PO:0009002 ! plant cell is_a: PO:0025028 ! embryo plant cell relationship: develops_from PO:0000423 ! zygote relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0002003 name: vessel member namespace: plant_anatomy def: "One of the cellular components of a vessel, a dead cell with the wall between adjacent members being variously perforated and the walls that persist variously thickened." [ISBN:0471245208] subset: TraitNet synonym: "vessel element" RELATED [] synonym: "vessel segment" RELATED [] is_a: PO:0000290 ! tracheary element [Term] id: PO:0002004 name: silk scar namespace: plant_anatomy def: "The silk scar is composed of the shrivelled remains of the intercalary region of the silk, together with the base of the silk which is the true stylar tissue of the silk arising from the distal end of the developing kernel (caryopsis)." [GR:cwt6] is_a: PO:0008001 ! fruit distal end relationship: part_of PO:0009084 ! pericarp [Term] id: PO:0003000 name: transition zone namespace: plant_anatomy def: "A region of the root between the meristem and the region of rapid elongation in which isodiametric growth (cell expansion) occurs." [Agricola:IND23249552, http://search.epnet.com/direct.asp?an=IND23249552&db=agr] subset: reference xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009005 ! root [Term] id: PO:0003003 name: obsolete primary root elongation zone namespace: plant_anatomy def: "A zone of small, densely cytoplasmic cells that are dividing and expanding in size located behind the zone of cell division in the primary root." [TAIR:ki] comment: This term was made obsolete because the definition was not correct. A new term with the same name and correct definitions was created to replace it. is_obsolete: true replaced_by: PO:0025257 [Term] id: PO:0003004 name: haustorial root namespace: plant_anatomy def: "OBSOLETE. The root of particular parasitic plants that becomes cemented to the host axis and intrudes into the tissues of the host." [http://www.botgard.ucla.edu/html/botanytextbooks/generalbotany/typesofroots/] comment: Term is specific for parasitic plants only. is_obsolete: true [Term] id: PO:0003005 name: nodal root namespace: plant_anatomy alt_id: PO:0003008 alt_id: PO:0003009 def: "Adventitious root that forms at a shoot node." [http://www.botgard.ucla.edu/html/botanytextbooks/generalbotany/typesofroots/] subset: reference subset: TraitNet is_a: PO:0000042 ! shoot-borne root [Term] id: PO:0003011 name: root vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a root." [ISBN:0471245208, POC:curators] comment: This term was brought back from OBSOLETE node (original reason for OBSOLETE: synonym of term stele). Since stele encompasses both vascular system and the pith, in roots with pith, vascular system and stele are not synonymous. synonym: "root vein" RELATED [] is_a: PO:0000034 ! vascular system relationship: part_of PO:0020124 ! root stele [Term] id: PO:0003014 name: obsolete lateral root elongation zone namespace: plant_anatomy def: "The portion of the lateral root located behind the zone of cell division that includes small, densely cytoplasmic cells that are dividing and expanding in size." [TAIR:ki] comment: This term was made obsolete because the definition was not correct. A new term with the same name and correct definitions was created to replace it. is_obsolete: true replaced_by: PO:0025256 [Term] id: PO:0003015 name: primary root differentiation zone namespace: plant_anatomy def: "A root differentiation zone that is part of a primary root." [POC:rw, TAIR:ki] is_a: PO:0020135 ! root differentiation zone relationship: part_of PO:0020127 ! primary root [Term] id: PO:0003016 name: lateral root differentiation zone namespace: plant_anatomy def: "A root differentiation zone that is part of a lateral root." [POC:rw, TAIR:ki] is_a: PO:0020135 ! root differentiation zone relationship: part_of PO:0020121 ! lateral root [Term] id: PO:0003017 name: root cap of primary root namespace: plant_anatomy def: "A root cap that is part of a primary root tip." [POC:rw, TAIR:ki] is_a: PO:0020123 ! root cap relationship: part_of PO:0000026 ! primary root tip [Term] id: PO:0003018 name: root cap of lateral root namespace: plant_anatomy def: "A root cap that is part of a lateral root tip." [POC:rw, TAIR:ki] is_a: PO:0020123 ! root cap relationship: part_of PO:0000027 ! lateral root tip [Term] id: PO:0003019 name: central root cap of lateral root namespace: plant_anatomy def: "A central root cap that is part of a root cap of lateral root." [POC:curators, TAIR:ki] is_a: PO:0020130 ! central root cap relationship: part_of PO:0003018 ! root cap of lateral root [Term] id: PO:0003020 name: lateral root cap of lateral root namespace: plant_anatomy def: "A lateral root cap that is part of a root cap of lateral root." [POC:curators, TAIR:ki] is_a: PO:0020131 ! lateral root cap relationship: part_of PO:0003018 ! root cap of lateral root [Term] id: PO:0003021 name: central root cap of primary root namespace: plant_anatomy def: "A central root cap that is part of a root cap of primary root." [POC:curators, TAIR:ki] is_a: PO:0020130 ! central root cap relationship: part_of PO:0003017 ! root cap of primary root [Term] id: PO:0003022 name: lateral root cap of primary root namespace: plant_anatomy def: "A central root cap that is part of a root cap of primary root." [POC:curators, TAIR:ki] is_a: PO:0020131 ! lateral root cap relationship: part_of PO:0003017 ! root cap of primary root [Term] id: PO:0003023 name: root nodule namespace: plant_anatomy def: "A cardinal organ part that is an outgrowth of a root and is inhabited by nitrogen-fixing bacteria." [POC:rw] comment: Root nodules are a symbiosis between a plant (often, but not exclusively, of the Fabaceae) and bacteria of the genus Rhizobium, Bradyrhizobium, or Azorhizobium. subset: TraitNet xref: OBO_SF_PO:3132479 is_a: PO:0025001 ! cardinal organ part relationship: develops_from PO:0025194 ! root nodule meristem relationship: part_of PO:0009005 ! root [Term] id: PO:0003024 name: stolon namespace: plant_anatomy def: "A branch that is slender, prostrate or trailing and above-ground and produces roots and sometimes erect shoots at its nodes." [APWeb:Glossary] subset: reference subset: TraitNet synonym: "runner" RELATED [] is_a: PO:0025073 ! branch [Term] id: PO:0004000 name: obsolete apical cell namespace: plant_anatomy def: "An embryonic plant cell that is the uppermost cell formed after the first division of the zygote." [ISBN:0471245208] comment: This term was originally named apical cell. It was made obsolete to avoid confusion with the new term apical cell (PO:0030007). This term is replaced by embryonic apical cell (PO:0025284). is_obsolete: true replaced_by: PO:0025284 [Term] id: PO:0004001 name: bulliform cell namespace: plant_anatomy def: "An enlarged more or less thin-walled leaf pavement cell, present, with other similar cells, in longitudinal rows in leaves of monocots." [ISBN:0471245208] comment: Also called motor cell because of its presumed participation in the mechanism of rolling and unrolling of leaves. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "motor cell" RELATED [] is_a: PO:0025212 ! leaf pavement cell [Term] id: PO:0004002 name: contact cell namespace: plant_anatomy def: "OBSOLETE. An axial parenchyma or a ray cell physiologically associated with a tracheary element. Also a cell next to a stoma." [ISBN:0471245208] comment: Not used in current plant literature. is_obsolete: true [Term] id: PO:0004003 name: phellem namespace: plant_anatomy alt_id: PO:0005049 def: "A portion of ground issue centrifugally derived from cork cambium, non-living at maturity, and having suberized walls." [ISBN:0471245208, POC:curators] comment: Protective in function because the walls are highly impervious to water. synonym: "cork" RELATED [] synonym: "portion of phellem tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: develops_from PO:0005599 ! cork cambium relationship: part_of PO:0005048 ! shoot axis periderm [Term] id: PO:0004004 name: epithelium cell namespace: plant_anatomy def: "OBSOLETE. A compact layer of cells, often secretory in function, covering a free surface or lining a cavity." [ISBN:0471245208] comment: Functional term is_obsolete: true [Term] id: PO:0004005 name: laticiferous cell namespace: plant_anatomy def: "OBSOLETE. A specialized cells or ducts resembling vessels; they form branched networks of latex-secreting cells in the phloem and other parts of plants." [http://academic.kellogg.edu/herbrandsonc/bio111/glossary/glossary.htm] comment: Obsoleted: Too general definition of the term. Replaced by two terms: non-articulated laticifer cell and articulated laticifer cell. is_obsolete: true [Term] id: PO:0004006 name: mesophyll cell namespace: plant_anatomy def: "A chlorenchyma cell that is part of a mesophyll." [POC:curators, TAIR:ki] subset: TraitNet is_a: PO:0000076 ! chlorenchyma cell relationship: part_of PO:0006070 ! mesophyll [Term] id: PO:0004007 name: phelloid cell namespace: plant_anatomy def: "OBSOLETE.  A cell within the phellem (cork) but distinct from the cork cell in having no suberin in its walls." [ISBN:0471245208] comment: Not used in current plant literature. Confusing definition. is_obsolete: true [Term] id: PO:0004008 name: photosynthetic cell namespace: plant_anatomy def: "OBSOLETE. A chloroplast-containing cell engaged in photosynthesis." [ISBN:0471245208] comment: Functional characterization is not part of the criteria. is_obsolete: true [Term] id: PO:0004009 name: silica cell namespace: plant_anatomy def: "Cells with deposits of silica in them. One of the two types of short cells in the epidermis of grasses and bamboos. It is usually paired with epidermal cork cell." [ISBN:0471245208] comment: One of two types of short cells in the epidermis of grasses. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025). subset: Poaceae is_a: PO:0004718 ! short cell [Term] id: PO:0004010 name: meristematic cell namespace: plant_anatomy def: "A plant cell synthesizing protoplasm and producing new cells by division and with only a primary cell wall." [ISBN:0471245208] xref: CL:0000685 is_a: PO:0009002 ! plant cell [Term] id: PO:0004011 name: initial cell namespace: plant_anatomy alt_id: PO:0000070 def: "A meristematic cell that by division gives rise to two cells, one of which remains meristematic, while the other is added to the plant body." [ISBN:0471245208] comment: Initial cells are often part of a portion of tissue that is composed mostly of somewhat older, differentiating cells. The division of an initial cell is often uneven, with the smaller daughter cell remaining meristematic. synonym: "meristemoid" EXACT [] synonym: "stem cell" RELATED [] xref: CL:0000034 xref: CL:0000266 xref: OBO_SF_PO:3166706 is_a: PO:0004010 ! meristematic cell [Term] id: PO:0004012 name: secretory cell namespace: plant_anatomy def: "OBSOLETE. Cell that produces secreted substances." [TAIR:ki] comment: This is a functional term. is_obsolete: true [Term] id: PO:0004013 name: epidermal cell namespace: plant_anatomy def: "A plant cell that is part of a portion of epidermis." [POC:curators] subset: TraitNet xref: CL:0000362 is_a: PO:0009002 ! plant cell relationship: part_of PO:0005679 ! epidermis [Term] id: PO:0004509 name: glandular trichome namespace: plant_anatomy def: "A  trichome that secretes or sequesters a portion of plant substance." [POC:curators] synonym: "secretory trichome" NARROW [] xref: OBO_SF_PO:2916424 is_a: PO:0000282 ! trichome [Term] id: PO:0004511 name: seed trichome namespace: plant_anatomy def: "A trichome that develops from seed coat epidermis and is often long with putative dispersal function." [POC:curators] subset: TraitNet synonym: "pubescence" RELATED [] synonym: "seed hair" EXACT [] is_a: PO:0000282 ! trichome relationship: part_of PO:0006048 ! seed coat epidermis [Term] id: PO:0004512 name: heartwood namespace: plant_anatomy def: "The inner layers of secondary xylem that have largely ceased to function in storage and conduction and in which reserve materials have been removed or converted into heartwood substances; generally darker colored than the functioning sapwood." [ISBN:0471245208, POC:curators] subset: TraitNet is_a: PO:0005848 ! secondary xylem [Term] id: PO:0004513 name: sapwood namespace: plant_anatomy def: "Outer part of the wood of stem or root containing living cells and reserves and in which conduction of water takes place. Generally lighter colored than the heartwood." [ISBN:0471245208, POC:curators] subset: TraitNet is_a: PO:0005848 ! secondary xylem [Term] id: PO:0004514 name: growth ring namespace: plant_anatomy def: "A growth layer of secondary xylem or secondary phloem as seen in transection of stem or root; may be an annual ring or a false annual ring." [ISBN:0471245208, POC:curators] subset: TraitNet synonym: "annual ring" EXACT [] is_a: PO:0005848 ! secondary xylem [Term] id: PO:0004515 name: early wood namespace: plant_anatomy def: "The wood formed in first part of a growth ring and characterized by a lower density and larger cells than the late wood." [ISBN:0471245208, POC:curators] subset: TraitNet synonym: "spring wood" RELATED [] is_a: PO:0004514 ! growth ring [Term] id: PO:0004516 name: late wood namespace: plant_anatomy def: "The secondary xylem formed in the later part of a growth ring; denser and composed of smaller cells than the early wood." [POC:curators] subset: Citrus subset: TraitNet synonym: "summer wood" RELATED [] is_a: PO:0004514 ! growth ring [Term] id: PO:0004517 name: growth ring boundary namespace: plant_anatomy def: "Boundary between two growth rings." [POC:curators] is_a: PO:0004514 ! growth ring [Term] id: PO:0004518 name: bark namespace: plant_anatomy def: "All tissues outside the vascular cambium or the xylem; in older trees may be divided into dead outer bark and living inner bark, which consists of secondary phloem." [POC:curators] subset: TraitNet synonym: "portion of bark tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0005043 ! secondary phloem [Term] id: PO:0004519 name: phloem fiber namespace: plant_anatomy def: "A fiber in phloem." [POC:curators] subset: TraitNet is_a: PO:0000081 ! axial cell disjoint_from: PO:0000289 ! sieve tube member relationship: part_of PO:0005043 ! secondary phloem [Term] id: PO:0004520 name: libriform fiber namespace: plant_anatomy def: "A xylem fiber commonly with thick walls and simple pits." [POC:curators] is_a: PO:0000274 ! xylem fiber [Term] id: PO:0004521 name: septate fiber namespace: plant_anatomy def: "A fiber with thin transverse walls (septa), which are formed after the cell develops a secondary wall thickening." [POC:curators] is_a: PO:0000274 ! xylem fiber [Term] id: PO:0004522 name: outer vascular cambium namespace: plant_anatomy def: "Cambium at the outer margin of the xylem cylinder." [POC:curators] is_a: PO:0005598 ! vascular cambium [Term] id: PO:0004523 name: included vascular cambium namespace: plant_anatomy def: "Cambium occurring within xylem." [POC:curators] is_a: PO:0005598 ! vascular cambium [Term] id: PO:0004524 name: included phloem namespace: plant_anatomy def: "A portion of phloem tissue produced by included vascular cambium." [POC:curators] is_a: PO:0005043 ! secondary phloem [Term] id: PO:0004525 name: wood parenchyma cell namespace: plant_anatomy def: "Parenchyma cell occurring within secondary xylem." [POC:curators] subset: TraitNet is_a: PO:0000074 ! parenchyma cell [Term] id: PO:0004526 name: axial wood parenchyma cell namespace: plant_anatomy def: "Parenchyma cell in the axial system of secondary xylem." [POC:curators] is_a: PO:0004525 ! wood parenchyma cell [Term] id: PO:0004527 name: ray wood parenchyma cell namespace: plant_anatomy def: "Parenchyma cell of a ray in secondary xylem." [POC:curators] is_a: PO:0004525 ! wood parenchyma cell [Term] id: PO:0004528 name: upright wood ray parenchyma cell namespace: plant_anatomy def: "Ray cell in secondary xylem oriented axially (vertically in the axis) with its longest dimension." [POC:curators] is_a: PO:0004527 ! ray wood parenchyma cell [Term] id: PO:0004529 name: procumbent wood ray parenchyma cell namespace: plant_anatomy def: "Ray cell within secondary xylem having its longest axis in radial direction." [POC:curators] is_a: PO:0004527 ! ray wood parenchyma cell [Term] id: PO:0004530 name: tile  cell namespace: plant_anatomy def: "Empty upright ray cell of approximately the same height as the procumbent ray cell and occurring in indeterminate horizontal series usually  interspersed among the procumbent cells." [POC:curators] is_a: PO:0004528 ! upright wood ray parenchyma cell [Term] id: PO:0004531 name: sheath cell namespace: plant_anatomy def: "Cell on the margin of, and tending to form a sheath around, the procumbent cells of a multi-seriate ray as seen in tangential section." [POC:curators] xref: CL:0000618 is_a: PO:0004528 ! upright wood ray parenchyma cell [Term] id: PO:0004532 name: wood parenchyma namespace: plant_anatomy def: "Parenchymatous tissue occurring in the wood." [POC:curators] is_a: PO:0005848 ! secondary xylem [Term] id: PO:0004533 name: axial wood parenchyma namespace: plant_anatomy def: "Parenchyma tissue in the axial system of secondary xylem." [POC:curators] is_a: PO:0004532 ! wood parenchyma [Term] id: PO:0004534 name: ray wood parenchyma namespace: plant_anatomy def: "Radially oriented parenchyma tissue in secondary xylem." [POC:curators] is_a: PO:0004532 ! wood parenchyma [Term] id: PO:0004535 name: fruit placenta namespace: plant_anatomy def: "A portion of placenta tissue that is part of a fruit and to which seeds are attached." [POC:curators] subset: Tomato is_a: PO:0020001 ! ovary placenta relationship: develops_from PO:0025078 ! placenta relationship: part_of PO:0009001 ! fruit [Term] id: PO:0004536 name: fruit pedicel namespace: plant_anatomy def: "An infructescence branch that supports an individual fruit." [POC:rw] comment: The ultimate branch in an infructescence. subset: Tomato xref: OBO_SF_PO:2903966 is_a: PO:0025243 ! infructescence branch relationship: part_of PO:0009001 ! fruit [Term] id: PO:0004537 name: nucellar plant embryo namespace: plant_anatomy def: "A somatic plant embryo derived directly from nucellus cells." [POC:curators] comment: Common in Citrus. subset: Citrus synonym: "adventitious embryo" BROAD [] xref: OBO_SF_PO:3293415 is_a: PO:0025302 ! somatic plant embryo [Term] id: PO:0004538 name: indeterminate nodule namespace: plant_anatomy def: "A root nodule characterized by a persistent meristem, presence of vascular transfer cells, and cell division in the inner cortex with non-dividing infected cells and bacteria." [ISBN:1842460137, POC:curators] comment: Nodule is persistent and may continue to grow after a physiological stress. is_a: PO:0003023 ! root nodule [Term] id: PO:0004539 name: determinate nodule namespace: plant_anatomy def: "A root nodule characterized by a dividing infected cells and bacteria, vascular transfer cells absent and cell division is in the outer cortex." [POC:curators] comment: Nodules are not persistent. is_a: PO:0003023 ! root nodule [Term] id: PO:0004540 name: fruit columella namespace: plant_anatomy def: "A columella that forms the central axis of a fruit." [POC:curators] subset: Tomato xref: OBO_SF_PO:3132522 is_a: PO:0025230 ! columella relationship: part_of PO:0009001 ! fruit [Term] id: PO:0004542 name: rhizome namespace: plant_anatomy def: "A swollen shoot axis that grows horizontally at or below the substrate surface and produces shoots above and roots or rhizoids below." [POC:curators] comment: In ferns and many monocots, a rhizome is a primary axis (stem), while in other species, it is a branch. Usually produces scale-like leaves. subset: reference subset: TraitNet is_a: PO:0025029 ! shoot axis [Term] id: PO:0004543 name: tuber namespace: plant_anatomy def: "An enlarged storage branch." [POC:curators] comment: Found in potatoes and other species. subset: Potato subset: reference subset: TraitNet xref: OBO_SF_PO:3017726 is_a: PO:0025073 ! branch [Term] id: PO:0004544 name: root-borne shoot system namespace: plant_anatomy def: "A shoot system that is initiated from a root." [POC:curators] subset: TraitNet synonym: "sucker" BROAD [] synonym: "sucker shoot" RELATED [] is_a: PO:0009006 ! shoot system [Term] id: PO:0004545 name: shoot-borne shoot system namespace: plant_anatomy def: "A shoot system that is initiated from a shoot." [POC:curators] subset: reference synonym: "branch" RELATED [] synonym: "sucker" BROAD [] is_a: PO:0009006 ! shoot system [Term] id: PO:0004546 name: epicomic shoot namespace: plant_anatomy def: "Shoot developing from a trunk." [POC:curators] is_a: PO:0004545 ! shoot-borne shoot system [Term] id: PO:0004547 name: subterranean tuber namespace: plant_anatomy def: "A tuber that is below ground." [POC:curators] subset: Potato is_a: PO:0004543 ! tuber [Term] id: PO:0004548 name: aerial tuber namespace: plant_anatomy def: "A tuber that is above ground." [POC:curators] is_a: PO:0004543 ! tuber [Term] id: PO:0004700 name: anther wall middle layer namespace: plant_anatomy def: "A portion of ground tissue directly internal to an anther endothecium that develops from an anther wall parietal cell layer." [ISBN:9780003686647, POC:curators] comment: May be a single or double layer. Usually crushed by the endothecium and therefore almost invariably degenerates early during anther development. In some angiosperms, including Arabidopsis, it develops from an anther wall outer secondary parietal cell layer. In other angiosperms, it develops directly from an anther wall primary parietal cell layer, while in still others, two layers of the middle layer may develop from both an anther wall outer secondary parietal cell layer and an anther wall inner secondary parietal cell layer. subset: Angiosperm subset: reference xref: OBO_SF_PO:2903966 xref: OBO_SF_PO:3298007 is_a: PO:0025059 ! portion of ground tissue relationship: adjacent_to PO:0020002 ! anther wall endothecium relationship: develops_from PO:0006007 ! anther wall secondary parietal cell layer relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0004701 name: short shoot namespace: plant_anatomy def: "Shoot system in which the internodes elongate little or at all, bearing reproductive structures and/or leaves." [APWeb:Glossary] synonym: "brachyblast" RELATED [] synonym: "bud spur" RELATED [] is_a: PO:0006343 ! axillary shoot system [Term] id: PO:0004702 name: long shoot namespace: plant_anatomy def: "Shoot system in which all or most of the internodes elongate." [APWeb:Glossary] is_a: PO:0006343 ! axillary shoot system [Term] id: PO:0004703 name: carpel primordium namespace: plant_anatomy def: "A phyllome primordium that develops into a carpel. It initiates from the carpel anlagen region of the floral meristem." [GR:pj, POC:curators] is_a: PO:0025128 ! phyllome primordium relationship: develops_from PO:0006005 ! carpel anlagen [Term] id: PO:0004704 name: sepal primordium namespace: plant_anatomy def: "A phyllome primordium that will devlop into a sepal." [POC:curators] is_a: PO:0025128 ! phyllome primordium [Term] id: PO:0004705 name: stamen primordium namespace: plant_anatomy def: "A phyllome primordium that will develop into a stamen." [POC:curators] is_a: PO:0025128 ! phyllome primordium [Term] id: PO:0004706 name: flower primordium namespace: plant_anatomy def: "A primordium that will develop into a flower." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0004707 name: fruit dehiscence zone namespace: plant_anatomy def: "A dehiscence zone that is part of a fruit." [POC:curators] comment: Upon fruit maturation by drying, undergoes cell separation, allowing the valves to detach from the replum and seeds to be dispersed. subset: Arabidopsis is_a: PO:0025092 ! dehiscence zone relationship: part_of PO:0009001 ! fruit [Term] id: PO:0004708 name: scutellar node namespace: plant_anatomy def: "A stem node that is the part of an embryo axis directly above the radicle where the scutellum is attached." [ISBN:0471244554] comment: Found in grasses where no hypocotyl is present. The scutellar node may represent a reduction of the hypocotyl and cotyledonary node. is_a: PO:0020141 ! stem node is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0019018 ! embryo axis [Term] id: PO:0004709 name: axillary bud namespace: plant_anatomy def: "A bud that develops from an axillary bud meristem." [POC:curators] subset: reference xref: OBO_SF_PO:3016634 is_a: PO:0000055 ! bud [Term] id: PO:0004710 name: axillary flower bud namespace: plant_anatomy def: "An axillary bud that develops into a flower." [POC:curators] synonym: "axillary floral bud" EXACT [] is_a: PO:0000056 ! flower bud is_a: PO:0025072 ! axillary reproductive bud [Term] id: PO:0004711 name: axillary inflorescence bud namespace: plant_anatomy def: "An axillary reproductive bud that develops into an inflorescence." [POC:curators] xref: OBO_SF_PO:3020771 is_a: PO:0000057 ! inflorescence bud is_a: PO:0025072 ! axillary reproductive bud [Term] id: PO:0004712 name: axillary vegetative bud namespace: plant_anatomy def: "An axillary bud that develops into a long or short shoot." [POC:curators] xref: OBO_SF_PO:3020771 is_a: PO:0000058 ! vegetative bud is_a: PO:0004709 ! axillary bud [Term] id: PO:0004713 name: terminal bud namespace: plant_anatomy def: "A bud that develops from a shoot apical meristem." [POC:curators] subset: reference xref: OBO_SF_PO:3016634 is_a: PO:0000055 ! bud [Term] id: PO:0004714 name: terminal flower bud namespace: plant_anatomy def: "A terminal bud that develops into a flower." [POC:curators] synonym: "terminal floral bud" EXACT [] is_a: PO:0000056 ! flower bud is_a: PO:0025071 ! terminal reproductive bud [Term] id: PO:0004715 name: terminal inflorescence bud namespace: plant_anatomy def: "A terminal reproductive bud develops into an inflorescence." [POC:curators] is_a: PO:0000057 ! inflorescence bud is_a: PO:0025071 ! terminal reproductive bud [Term] id: PO:0004716 name: terminal vegetative bud namespace: plant_anatomy def: "A terminal bud that develops into a long or short shoot." [POC:curators] is_a: PO:0000058 ! vegetative bud is_a: PO:0004713 ! terminal bud [Term] id: PO:0004717 name: long cell namespace: plant_anatomy def: "A more or less rectangular leaf pavement cell in which the proximo-distal dimension is several times longer than the transverse dimension." [POC:curators] comment: In the leaf epidermis of Poaceae and Joinvilleaceae, long cells and short cells often alternate in longitudinal rows. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025212 ! leaf pavement cell [Term] id: PO:0004718 name: short cell namespace: plant_anatomy def: "An isodiametric leaf pavement cell." [POC:curators] comment: In the leaf epidermis of Poaceae and Joinvilleaceae, long cells and short cells often alternate in longitudinal rows. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025212 ! leaf pavement cell [Term] id: PO:0004719 name: hilum groove namespace: plant_anatomy def: "A cardinal organ part that forms a longitudinal groove in the testa through the prominent hilum of a seed." [POC:curators] synonym: "faboid split" RELATED [] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009010 ! seed [Term] id: PO:0004720 name: paraclade namespace: plant_anatomy def: "An inflorescence branch that ends in an inflorescence that repeats the main inflorescence." [APWeb:Glossary, ISBN:0521251346] subset: Angiosperm is_a: PO:0009081 ! inflorescence branch [Term] id: PO:0004721 name: paraclade cortex namespace: plant_anatomy def: "A portion of ground tissue that is part of a cortex and part of a paraclade." [POC:curators, TAIR:ki] synonym: "portion of paraclade cortex tissue" EXACT [] xref: OBO_SF_PO:2903966 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0004720 ! paraclade relationship: part_of PO:0005708 ! cortex [Term] id: PO:0004722 name: pedicel cortex namespace: plant_anatomy def: "A portion of ground tissue that is part of a cortex and part of a pedicel." [POC:curators, TAIR:ki] synonym: "portion of pedicel cortex tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex relationship: part_of PO:0009052 ! pedicel [Term] id: PO:0004723 name: sepal vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a sepal." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0005017 ! flower vascular system relationship: part_of PO:0009031 ! sepal [Term] id: PO:0004724 name: hypocotyl-root junction namespace: plant_anatomy def: "A cardinal organ part that is the part of a plant axis where a radicle joins a hypocotyl." [ISBN:9780881928501, POC:rw] subset: reference synonym: "embryo axis transition zone" EXACT [ISBN:9780881928501] synonym: "Poaceae crown" NARROW [] xref: OBO_SF_PO:3132568 is_a: PO:0025001 ! cardinal organ part [Term] id: PO:0004725 name: abaxial side of leaf primordium namespace: plant_anatomy def: "A portion of phyllome primordium tissue that is the abaxial/outer side of a leaf primordium and develops into the abaxial/lower leaf blade." [POC:curators] is_a: PO:0025128 ! phyllome primordium relationship: part_of PO:0000017 ! leaf primordium [Term] id: PO:0004726 name: adaxial side of leaf primordium namespace: plant_anatomy def: "A portion of phyllome primordium tissue that is the adaxial/inner side of the leaf primordium develops into the adaxial/upper leaf blade." [POC:curators] is_a: PO:0025128 ! phyllome primordium relationship: part_of PO:0000017 ! leaf primordium [Term] id: PO:0005001 name: basal axillary shoot namespace: plant_anatomy def: "A branch that forms from a leaf at the very base of the shoot." [GR:ap] synonym: "basal axillary branch" RELATED [] synonym: "ratoon" RELATED [] synonym: "tiller" RELATED [] is_a: PO:0006343 ! axillary shoot system [Term] id: PO:0005002 name: cauline axillary shoot namespace: plant_anatomy def: "An axillary branch that forms from a leaf above the very base of the shoot." [GR:ap] comment: The genetic distinction between cauline axillary branches and tillers may or may not be unique to the Poaceae. There are no data for other plant families. synonym: "cauline axillary branch" RELATED [] is_a: PO:0006343 ! axillary shoot system [Term] id: PO:0005003 name: shoot axis trichome namespace: plant_anatomy def: "A trichome that is part of a shoot axis epidermis." [PMID:17217456, POC:curators] comment: Can occur on a stem or branch. subset: TraitNet synonym: "branch trichome" NARROW [] synonym: "stem trichome" NARROW [] is_a: PO:0000282 ! trichome relationship: part_of PO:0000112 ! shoot axis epidermis [Term] id: PO:0005004 name: shoot node namespace: plant_anatomy def: "A cardinal organ part of a shoot axis where one or more spikelet, flower, floret, branch, bud, or leaf may arise." [GR:pj, POC:curators] subset: reference subset: TraitNet is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0005005 name: shoot internode namespace: plant_anatomy def: "A cardinal organ part that is the part of a shoot axis between two nodes of the axis." [POC:curators] subset: Potato subset: reference subset: TraitNet is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0005006 name: articulated laticifer namespace: plant_anatomy def: "A structure consisting of long multinucleate tubes in which latex is found, having cross walls (articulated)." [APWeb:Glossary, GR:pj] is_a: PO:0005053 ! laticifer [Term] id: PO:0005007 name: non-articulated laticifer namespace: plant_anatomy def: "A structure consisting of long multinucleate tubes in which latex is found, having no cross walls." [APWeb:Glossary, GR:pj] is_a: PO:0005053 ! laticifer [Term] id: PO:0005008 name: obsolete fruit septum namespace: plant_anatomy def: "A thin partition or membrane that divides a cavity or a mass of tissue in the fruit that is derived from the carpel septum." [GR:cwt] comment: This term was made obsolete because it was ambiguous. It has been replaced by the more precise terms fruit septum (PO:0025268) and fruit replum (PO:0025267). Annotations for Arabidopsis should go to fruit replum. is_obsolete: true consider: PO:0025267 consider: PO:0025268 [Term] id: PO:0005009 name: carpel septum namespace: plant_anatomy def: "A thin partition or membrane that divides multilocular ovary. Often found in species with syncarpous (multiple carpels fused) pistil." [GR:cwt, GR:pj] comment: Carpel septum was made obsolete because it was ambiguous. It has been replaced by the more precise terms ovary septum (PO:0025262) and ovary replum (PO:0025272). Annotations for Arabidopsis should go to ovary replum (PO:0025272). is_obsolete: true consider: PO:0025262 consider: PO:0025272 [Term] id: PO:0005010 name: anther septum namespace: plant_anatomy def: "A septum that is present in an anther dehiscence zone." [GR:cwt, GR:pj] is_a: PO:0000030 ! septum relationship: part_of PO:0009061 ! androecium [Term] id: PO:0005011 name: anther dehiscence zone namespace: plant_anatomy def: "A dehiscence zone that is part of an anther." [POC:curators] comment: Extends along the entire length of the anther and is observed as an indentation between the locules of each theca. Upon anther maturation, cell separation within the dehiscence zone allows the anther wall to break open and pollen to be released. is_a: PO:0025092 ! dehiscence zone relationship: part_of PO:0009066 ! anther [Term] id: PO:0005012 name: pedicel vascular system namespace: plant_anatomy def: "A shoot axis vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a pedicel." [PMID:17217456, POC:rw] is_a: PO:0000039 ! shoot axis vascular system relationship: part_of PO:0009052 ! pedicel [Term] id: PO:0005013 name: hypocotyl epidermis namespace: plant_anatomy def: "The outermost primary cell layer of the hypocotyl." [PMID:15368128, TAIR:donghui] is_a: PO:0006035 ! shoot epidermis relationship: part_of PO:0020100 ! hypocotyl [Term] id: PO:0005014 name: embryo cortex namespace: plant_anatomy def: "A cortex that is part of an embryo." [PMID:16543410, POC:curators, TAIR:donghui] comment: Can occur in the hypocotyl and root. is_a: PO:0005708 ! cortex is_a: PO:0025233 ! portion of embryo plant tissue relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0005015 name: embryo endodermis namespace: plant_anatomy def: "A portion of endodermis that is part of an embryo." [PMID:16543410] is_a: PO:0000252 ! endodermis is_a: PO:0025233 ! portion of embryo plant tissue relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0005016 name: replum namespace: plant_anatomy def: "A false septum formed by the ingrowth from the placenta of an ovary rather than from the carpel walls. This is formed post fertilization." [GR:pj, PMID:13678595, PMID:15035986] comment: This term was made obsolete to avoid confusion with the new terms fruit replum and ovary replum. Consider ovary replum (PO:0025272) or fruit replum (PO:0025267). xref: OBO_SF_PO:3177363 is_obsolete: true consider: PO:0025267 consider: PO:0025272 [Term] id: PO:0005017 name: flower vascular system namespace: plant_anatomy def: "A shoot system vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a flower." [POC:rw] comment: Because a vascular system is defined as the totality of the portions of vascular tissue in a plant structure, the vascular systems of floral parts are part of the flower vascular system. is_a: PO:0025205 ! shoot system vascular system relationship: part_of PO:0009046 ! flower [Term] id: PO:0005018 name: stamen vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a stamen." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0005017 ! flower vascular system relationship: part_of PO:0009029 ! stamen [Term] id: PO:0005019 name: carpel vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a carpel." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0009030 ! carpel [Term] id: PO:0005020 name: vascular bundle namespace: plant_anatomy def: "A unit strand of the vascular system containing the vascular tissues, xylem and phloem. In addition vascular cambium is often present." [GR:pj] comment: May also contain portions of ground tissue. subset: Maize subset: TraitNet is_a: PO:0009007 ! portion of plant tissue [Term] id: PO:0005021 name: sepal margin namespace: plant_anatomy def: "The margin of a sepal." [PMID:15269176, TAIR:donghui] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009031 ! sepal [Term] id: PO:0005022 name: ovary wall namespace: plant_anatomy def: "A wall of an ovary that is composed of abaxial (outer) and adaxial (inner) epidermis and a middle layer,  composed of mesophyll cells and a distinct subepidermal adaxial cell layer (as found in Arabidopsis)." [GR:pj, PMID:10332605] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009072 ! ovary [Term] id: PO:0005023 name: abaxial epidermis of ovary namespace: plant_anatomy def: "The epidermal cell layer of the abaxial/outer surface of the ovary." [GR:pj] is_a: PO:0006063 ! ovary epidermis [Term] id: PO:0005024 name: adaxial epidermis of ovary namespace: plant_anatomy def: "The epidermal cell layer of the adaxial/inner surface of the ovary." [GR:pj] is_a: PO:0006063 ! ovary epidermis [Term] id: PO:0005025 name: middle layer of ovary wall namespace: plant_anatomy def: "A portion of chlorencyma tissue that is composed of one or more mesophyll layers. It may have a distinct subepidermal adaxial cell layer (as found in Arabidopsis)." [GR:pj, PMID:10332605] comment: The cells in the mesophyll layer(s) may not differentiate similar to the spongy and palisade cells found in the leaf mesophyll. subset: Poaceae synonym: "ovary wall middle layer" EXACT [] xref: OBO_SF_PO:2903966 is_a: PO:0005426 ! chlorenchyma relationship: part_of PO:0005022 ! ovary wall [Term] id: PO:0005026 name: root giant cell namespace: plant_anatomy def: "Multinucleate cell developed by a series of events involving kayokinesis but not cytokinesis of the initial feeding cell. The events are induced by root knot nematodes (e.g., Meloidogyne sp. ) entering the feeding cells (any cells) of the root vascular system." [GR:pj, PMID:15053756] subset: Arabidopsis is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0003011 ! root vascular system [Term] id: PO:0005027 name: root syncytium cell namespace: plant_anatomy def: "Multinucleate cell developed by a series of events involving fusion with the neighboring dividing cells. The events are induced by cyst nematodes (e.g. Heterodera schachtii) entering the feeding cells (any cells) of the root vascular system." [GR:pj, PMID:15053756] subset: Arabidopsis is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0003011 ! root vascular system [Term] id: PO:0005028 name: inflorescence vascular system namespace: plant_anatomy def: "A shoot system vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in an inflorescence." [POC:rw] is_a: PO:0025205 ! shoot system vascular system relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0005029 name: root primordium namespace: plant_anatomy def: "A primordium that will develop into a root." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0005039 name: primary thickening meristem namespace: plant_anatomy def: "A meristem that develops from a peripheral zone of a shoot apical meristem and is responsible for the primary increase in thickness of a shoot axis." [ISSN:0669014893] comment: May appear as a distinct mantle like zone. Often found in monocotyledons. is_a: PO:0009013 ! meristem relationship: develops_from PO:0000225 ! peripheral zone relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0005040 name: root pith namespace: plant_anatomy def: "A portion of pith that is part of a root." [ISBN:0080280307] subset: TraitNet is_a: PO:0006109 ! pith relationship: part_of PO:0020124 ! root stele [Term] id: PO:0005041 name: shoot axis pith namespace: plant_anatomy def: "A portion of pith that is part of a shoot axis." [ISBN:0080280307] comment: Can occur in a stem or branch. subset: TraitNet synonym: "branch pith" NARROW [] synonym: "stem pith" NARROW [] is_a: PO:0006109 ! pith relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0005043 name: secondary phloem namespace: plant_anatomy def: "A portion of phloem tissue formed by the activity of the vascular cambium." [ISBN:0122151704] comment: Part of the bark. subset: TraitNet synonym: "portion of secondary phloem tissue" EXACT [] is_a: PO:0005417 ! phloem [Term] id: PO:0005046 name: periderm namespace: plant_anatomy def: "A peripheral portion of ground tissue in a plant axis that is composed of phellogen, phellem, and phelloderm." [ISBN:047124529, POC:curators] comment: After secondary growth, the periderm may replace the epidermis in stems and roots, rarely in other organs. In some cases, the epidermis is retained after periderm development. Periderm is derived from lateral meristem and may contain secondary phloem. subset: TraitNet synonym: "portion of periderm tissue" EXACT [] synonym: "portion of peridermal tissue" EXACT [] xref: OBO_SF_PO:3008013 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0025004 ! plant axis [Term] id: PO:0005047 name: root periderm namespace: plant_anatomy def: "A portion of periderm that is part of a root." [POC:curators] xref: OBO_SF_PO:3008032 is_a: PO:0005046 ! periderm relationship: part_of PO:0009005 ! root [Term] id: PO:0005048 name: shoot axis periderm namespace: plant_anatomy def: "A portion of periderm that is part of a shoot axis." [POC:curators] comment: Can occur on a stem or branch. synonym: "branch periderm" NARROW [] synonym: "stem periderm" NARROW [] xref: OBO_SF_PO:3008032 is_a: PO:0005046 ! periderm relationship: part_of PO:0004518 ! bark relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0005050 name: phelloderm namespace: plant_anatomy def: "A portion of ground tissue often resembling cortical parenchyma produced centripetally by the cork cambium." [ISBN:0080374913] subset: Rice synonym: "portion of phelloderm tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: develops_from PO:0005599 ! cork cambium relationship: part_of PO:0005048 ! shoot axis periderm [Term] id: PO:0005051 name: hypodermis namespace: plant_anatomy def: "A portion of ground tissue that is the outermost layer of a portion of cortex." [POC:curators] comment: A layer or layers of cells beneath the epidermis that is distinct in appearance from adjacent tissues. synonym: "portion of hypodermal tissue" EXACT [] xref: OBO_SF_PO:3016668 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0005708 ! cortex [Term] id: PO:0005052 name: plant callus namespace: plant_anatomy def: "A portion of plant tissue that consists of mass of undifferentiated plant cells." [GR:pj, POC:curators] comment: Consists primarily of parenchyma cells but may contain other cell types as the callus begins to differentiate. May be formed as a result of wounding or may develop in culture. synonym: "portion of callus tissue" EXACT [] xref: OBO_SF_PO:3280004 is_a: PO:0009007 ! portion of plant tissue [Term] id: PO:0005053 name: laticifer namespace: plant_anatomy def: "A secretory structure that produces latex." [ISBN:0080374913] is_a: PO:0005656 ! portion of secretory tissue [Term] id: PO:0005057 name: shoot axis hypodermis namespace: plant_anatomy def: "A portion of hypodermis that is part of a shoot axis cortex." [ISBN:0080374913, POC:curators] comment: Can occur in a stem or branch. synonym: "branch hypodermis" NARROW [] synonym: "stem hypodermis" NARROW [] is_a: PO:0005051 ! hypodermis relationship: part_of PO:0000223 ! shoot axis cortex [Term] id: PO:0005058 name: shoot axis endodermis namespace: plant_anatomy def: "A portion of endodermis that is part of a shoot axis cortex." [POC:curators] comment: Can occur in a stem or branch. synonym: "branch endodermis" NARROW [] synonym: "stem endodermis" NARROW [] is_a: PO:0000252 ! endodermis relationship: part_of PO:0000223 ! shoot axis cortex [Term] id: PO:0005059 name: root endodermis namespace: plant_anatomy def: "A portion of endodermis that is part of a root cortex." [GR:pj] is_a: PO:0000252 ! endodermis relationship: part_of PO:0000258 ! root cortex [Term] id: PO:0005060 name: leaf endodermis namespace: plant_anatomy def: "A portion of endodermis that is part of a vascular leaf." [POC:curators] comment: Often found in the leaf of Gymnosperms and elsewhere. is_a: PO:0000252 ! endodermis relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0005349 name: schizo-lysigenous aerenchyma namespace: plant_anatomy def: "OBSOLETE. Aerenchyma, originating by a combination of two processes, separation and degradation of cell walls." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because schizo-lysigenous form is an attribute of regular aerenchyma. is_obsolete: true [Term] id: PO:0005352 name: xylem namespace: plant_anatomy def: "A portion of vascular tissue that has as parts xylem elements." [GR:pj] comment: The principal function is the upward translocation of water and solutes. See also primary xylem and secondary xylem. subset: TraitNet synonym: "portion of xylem tissue" EXACT [] is_a: PO:0009015 ! portion of vascular tissue disjoint_from: PO:0030047 ! hydrome [Term] id: PO:0005360 name: aleurone layer namespace: plant_anatomy alt_id: PO:0008004 def: "A portion of plant tissue that is the outermost layer of endosperm in a seed, its cells being characterized by presence of protein bodies containing seed storage proteins." [GR:pj, ISBN:0080374913] subset: Angiosperm synonym: "fruit aleurone layer" EXACT [] xref: OBO_SF_PO:2903966 xref: OBO_SF_PO:3184958 xref: OBO_SF_PO:3185054 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0005415 name: endosperm parenchyma namespace: plant_anatomy def: "A portion of seed storage parenchyma that is part of an endopserm." [ISBN:0080374913, POC:curators] comment: Often devoid of intercellular spaces. is_a: PO:0025067 ! seed storage parenchyma relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0005417 name: phloem namespace: plant_anatomy def: "A portion of vascular tissue that has as parts sieve tube members." [POC:rw] comment: Functions in the conduction of organic substances in vascular plants. subset: TraitNet synonym: "portion of phloem tissue" EXACT [] is_a: PO:0009015 ! portion of vascular tissue disjoint_from: PO:0030048 ! leptome [Term] id: PO:0005421 name: parenchyma namespace: plant_anatomy def: "A portion of ground tissue composed of polyhedral cells typically with thin, non-lignified cellulosic cell walls and nucleate, living protoplasts." [POC:curators] comment: Parenchyma contains relatively unspecialized cells. subset: TraitNet synonym: "portion of parenchyma tissue" EXACT [] synonym: "portion of parenchymatous tissue" EXACT [] xref: OBO_SF_PO:3007987 is_a: PO:0025059 ! portion of ground tissue [Term] id: PO:0005423 name: collenchyma namespace: plant_anatomy def: "Living tissue composed of more or less elongated cells with thick non-lignified primary cell walls." [GR:pj] subset: TraitNet synonym: "portion of collenchyma tissue" EXACT [] synonym: "supporting tissue" RELATED [] is_a: PO:0025059 ! portion of ground tissue [Term] id: PO:0005426 name: chlorenchyma namespace: plant_anatomy def: "Chloroplast-containing parenchyma tissue." [ISBN:0080374913] subset: TraitNet synonym: "portion of chlorenchyma tissue" EXACT [] is_a: PO:0005421 ! parenchyma [Term] id: PO:0005427 name: sclerenchyma namespace: plant_anatomy def: "A supporting tissue composed of fibers or sclereids." [ISBN:0080374913] subset: TraitNet synonym: "portion of sclerenchyma tissue" EXACT [] synonym: "portion of sclerenchymatous tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue [Term] id: PO:0005597 name: cambium namespace: plant_anatomy def: "A lateral meristem, the cells of which divide mostly periclinally." [ISBN:0080374913] subset: TraitNet is_a: PO:0020145 ! lateral meristem [Term] id: PO:0005598 name: vascular cambium namespace: plant_anatomy def: "A lateral meristem, the cells of which give rise to secondary xylem and phloem, leading to an increase in girth." [GR:pj] subset: TraitNet is_a: PO:0005597 ! cambium relationship: part_of PO:0005020 ! vascular bundle [Term] id: PO:0005599 name: cork cambium namespace: plant_anatomy def: "Lateral meristem which produces the phellem (cork) and the phelloderm." [ISBN:0080374913] subset: TraitNet synonym: "phellogen" RELATED [] is_a: PO:0005597 ! cambium relationship: part_of PO:0005048 ! shoot axis periderm [Term] id: PO:0005621 name: angular collenchyma namespace: plant_anatomy def: "OBSOLETE. A form of collenchyma in which the primary wall thickening is most prominent in the angles where three or more cells are joined." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because angular form is a common attribute of ordinary collenchyma. is_obsolete: true [Term] id: PO:0005632 name: lacunar collenchyma namespace: plant_anatomy def: "OBSOLETE. A collenchyma characterized by intercellular spaces and cell wall thickenings facing the intercellular spaces." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because the lacunar form is an attribute of regular collenchyma. is_obsolete: true [Term] id: PO:0005633 name: lamellar collenchyma namespace: plant_anatomy def: "OBSOLETE. A collenchyma in which cell wall thickenings are deposited mainly on tangential walls." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because lamellar form is an attribute of regular collenchyma. synonym: "plate collenchyma" RELATED [] synonym: "tangential collenchyma" RELATED [] is_obsolete: true [Term] id: PO:0005645 name: leaf mesophyll namespace: plant_anatomy def: "The chloroplast-containing, photosynthetic parenchymatous tissue situated between the two epidermal layers of the foliage leaf." [GR:pj, ISBN:0080374913] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "foliage leaf mesophyll" RELATED [] synonym: "leaf parenchyma" RELATED [] is_a: PO:0006070 ! mesophyll relationship: part_of PO:0025034 ! leaf [Term] id: PO:0005647 name: spongy mesophyll namespace: plant_anatomy def: "Leaf mesophyll parenchyma characterized by little elongated cells, that are not closely packed and have conspicuous intercellular spaces." [GR:pj, ISBN:0080374913] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "spongy parenchyma" RELATED [] is_a: PO:0006070 ! mesophyll relationship: part_of PO:0005645 ! leaf mesophyll [Term] id: PO:0005648 name: palisade mesophyll namespace: plant_anatomy def: "Parenchyma containing closely packed elongated chlorenchymatous cells oriented perpendicular to the leaf surface and which are active in photosynthesis." [GR:pj, ISBN:0080374913] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "palisade parenchyma" RELATED [] is_a: PO:0006070 ! mesophyll relationship: part_of PO:0005645 ! leaf mesophyll [Term] id: PO:0005656 name: portion of secretory tissue namespace: plant_anatomy def: "Tissues that form specialized structures producing a secretion." [GR:pj, ISBN:047124529] comment: The synonym gland does not imply non-secretory 'glands'. subset: TraitNet synonym: "gland" RELATED [] is_a: PO:0009007 ! portion of plant tissue [Term] id: PO:0005660 name: hydathode namespace: plant_anatomy def: "A cardinal organ part that releases water through a hydathode pore." [ISBN:0471244554] comment: Hydathodes may have one or more pores that are similar to stomata but lack the ability to open and close. Hydathodes are involved in the release of water or xylem sap through pores via guttation or secretion. Generally, hydathodes are located at the end of a minor vein in a phyllome. In many plants, hydathodes includes a portion of thin-walled parenchyma between the tracheary elements and the pore, known as an epithem. In some plants, hydathodes are associated with secretory tissue. xref: OBO_SF_PO:3289531 is_a: PO:0025001 ! cardinal organ part [Term] id: PO:0005661 name: salt gland namespace: plant_anatomy def: "A specialized tissue where excess salt absorbed in water from the soil is concentrated, being stores or excreted." [GR:pj] comment: A crust of salt forms on leaves which tastes bad and the white surfaces act to reflect light. Example, as is Mangrove vegetation. is_a: PO:0005656 ! portion of secretory tissue [Term] id: PO:0005665 name: resin canal namespace: plant_anatomy def: "A duct of schizogenous origin lined with resin-secreting cells and containing resin." [GR:pj, ISBN:0080374913] synonym: "resin duct" RELATED [] is_a: PO:0005656 ! portion of secretory tissue [Term] id: PO:0005669 name: oil gland namespace: plant_anatomy def: "A gland or a cavity lined with cells that secrete oils." [GR:pj] comment: Oil glands are schizogenous. synonym: "oil cavity" RELATED [] is_a: PO:0005656 ! portion of secretory tissue [Term] id: PO:0005679 name: epidermis namespace: plant_anatomy def: "A portion of plant tissue composed of epidermal cells that develops from the protoderm and covers the surface of a plant structure." [POC:curators] comment: The epidermis can be composed of one or more layers of cells. In some\nspecies of vascular plants, the epidermis, which is a primary tissue, is\nreplaced by periderm, which is secondary tissue, later in development. The\nepidermis can also include trichomes, stomatal pores, root hairs, and\nrhizoids. subset: TraitNet synonym: "dermal tissue" EXACT [] synonym: "epidermal layer" EXACT [] synonym: "multiseriate epidermis" RELATED [] synonym: "portion of epidermal tissue" EXACT [] xref: OBO_SF_PO:3008011 is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0006210 ! protoderm [Term] id: PO:0005702 name: aerenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue containing particularly large intercellular spaces of schizogenous or lysigenous origin." [GR:pj, ISBN:0080374913] comment: As applied to an intercellular space, originating by one or a combination of two processes, separation and degradation of cell walls. subset: TraitNet synonym: "portion of aerenchyma tissue" RELATED [] is_a: PO:0005421 ! parenchyma [Term] id: PO:0005704 name: rhexigenous aerenchyma namespace: plant_anatomy def: "OBSOLETE. Aerenchyma originating by rupture of cells." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because rhexigenous form is an attribute of regular aerenchyma. is_obsolete: true [Term] id: PO:0005706 name: lysigenous aerenchyma namespace: plant_anatomy def: "OBSOLETE. Aerenchyma originating by dissolution of cells." [GR:pj, ISBN:0080374913] comment: The term was made obsolete because lysigenous form is an attribute of regular aerenchyma. is_obsolete: true [Term] id: PO:0005708 name: cortex namespace: plant_anatomy def: "A maximal portion of ground tissue between the vascular system and the epidermis in a plant." [POC:curators] subset: TraitNet synonym: "portion of cortex tissue" EXACT [] xref: OBO_SF_PO:3011071 is_a: PO:0025059 ! portion of ground tissue [Term] id: PO:0005752 name: promeristem namespace: plant_anatomy def: "OBSOLETE. Meristematic tissue consisting of apical initials, together with cells derived from them and which are still close to the initial." [GR:pj, ISBN:0080374913] is_obsolete: true [Term] id: PO:0005772 name: exodermis namespace: plant_anatomy def: "The sub-epidermal layer or layers of cells of the root similar in structure and cytochemical characteristics of  the endodermis, the outermost layer or layers of cells of the cortex." [GR:pj, ISBN:0080374913] comment: The cell walls are thickened and contain suberin. Absent in pteridophytes, fibrous in Phoenix and accompanied by sclerenchyma in Ananas. synonym: "root hypodermis" RELATED [] is_a: PO:0005051 ! hypodermis relationship: part_of PO:0000258 ! root cortex [Term] id: PO:0005848 name: secondary xylem namespace: plant_anatomy def: "A portion of xylem tissue that develops from a vascular cambium." [ISBN:0471245194, POC:curators] comment: Absent in some dicots and most monocots. The "wood" of gymnosperm and dicot angiosperm trees, shrubs, and lianas. subset: TraitNet synonym: "portion of secondary xylem tissue" EXACT [] synonym: "wood" EXACT [] is_a: PO:0005352 ! xylem relationship: develops_from PO:0005598 ! vascular cambium [Term] id: PO:0005849 name: primary xylem namespace: plant_anatomy def: "A portion of xylem tissue of the primary plant body." [GR:pj, ISBN:0122151704, ISBN:0471245194] comment: In stem or root it is differentiated behind the apical meristem. subset: TraitNet synonym: "portion of primary xylem tissue" EXACT [] is_a: PO:0005352 ! xylem [Term] id: PO:0006000 name: Poaceae hull namespace: plant_anatomy def: "A collective phyllome structure that encloses a fruit of the Poaceae (caryopsis) and develops from the dried lemma and palea." [POC:rw] subset: Maize subset: Poaceae subset: Rice xref: OBO_SF_PO:3132525 is_a: PO:0025023 ! collective phyllome structure relationship: develops_from PO:0009037 ! lemma relationship: develops_from PO:0009038 ! palea relationship: part_of PO:0006342 ! infructescence [Term] id: PO:0006001 name: phyllome namespace: plant_anatomy def: "A lateral plant organ produced by a shoot apical meristem." [POC:curators] subset: reference subset: TraitNet is_a: PO:0009008 ! plant organ relationship: part_of PO:0009006 ! shoot system [Term] id: PO:0006002 name: lower glume namespace: plant_anatomy alt_id: PO:0006027 alt_id: PO:0006031 def: "The proximal/basal of the two glumes." [GR:pj] synonym: "lower empty glume" RELATED [] synonym: "lower rudimentary glume" RELATED [] synonym: "outer empty glume" RELATED [] synonym: "outer glume" RELATED [] synonym: "outer rudimentary glume" RELATED [] is_a: PO:0009039 ! glume [Term] id: PO:0006003 name: scale leaf namespace: plant_anatomy def: "A phyllome that is reduced in size relative to a vascular leaf on the same plant and is often associated with a perennating or dormant bud or a vegetatively propagating organ such as a rhizome." [ISBN:0080374913] comment: May be photosynthetic or non-photosynthetic. Some species have vascular leaves that are scale-like (such as Juniperus, Thuja, and Chamaecyparis). Annotations for scale-like leaves should go under vascular\nleaf (PO:0009025), not scale leaf. subset: reference subset: TraitNet synonym: "cataphyll" RELATED [] xref: OBO_SF_PO:3167323 is_a: PO:0006001 ! phyllome [Term] id: PO:0006004 name: upper glume namespace: plant_anatomy alt_id: PO:0006028 alt_id: PO:0006030 def: "The apical/distal of the two glumes." [GR:pj] synonym: "inner empty glume" RELATED [] synonym: "inner glume" RELATED [] synonym: "inner rudimentary glume" RELATED [] synonym: "upper empty glume" RELATED [] synonym: "upper rudimentary glume" RELATED [] is_a: PO:0009039 ! glume [Term] id: PO:0006005 name: carpel anlagen namespace: plant_anatomy def: "A portion of meristem tissue that is a presumptive region on a floral meristem where carpel primordia would initiate." [PMID:14729915] is_a: PO:0009013 ! meristem relationship: part_of PO:0000229 ! flower meristem [Term] id: PO:0006006 name: anther wall primary parietal cell layer namespace: plant_anatomy def: "A portion of ground tissue that is part of an anther wall and has as parts a primary parietal cell and adjacent cells." [GR:pj, ISBN:9780003686647, PMID:2476454] subset: Angiosperm subset: reference synonym: "pollen sac primary parietal cell layer" EXACT [] xref: OBO_SF_PO:3298010 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0006007 name: anther wall secondary parietal cell layer namespace: plant_anatomy def: "A portion of ground tissue that is part of an anther wall and develops from an anther wall primary parietal cell layer." [GR:pj, ISBN:9780003686647, PMID:2476454] comment: In many angiosperms, the cells of the anther wall primary parietal cell layer undergo a periclinal division, resulting in the formation of two anther wall secondary parietal layers. subset: Angiosperm subset: reference synonym: "pollen sac secondary parietal cell layer" EXACT [] xref: OBO_SF_PO:3298010 is_a: PO:0025059 ! portion of ground tissue relationship: develops_from PO:0006006 ! anther wall primary parietal cell layer relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0006008 name: anther wall inner secondary parietal cell layer namespace: plant_anatomy def: "An anther wall secondary parietal cell layer that is formed towards the inside after the cells of an anther wall primary parietal cell layer undergo a periclinal division." [GR:pj, ISBN:9780003686647, PMID:2476454] comment: In many angiosperms, including Arabidopsis, it divides periclinally to form an anther wall middle layer externally and an anther wall tapetum internally. Alternatively, it may differentiate into a tapetum. subset: Angiosperm synonym: "pollen sac inner secondary parietal cell layer" EXACT [] xref: OBO_SF_PO:3298010 is_a: PO:0006007 ! anther wall secondary parietal cell layer [Term] id: PO:0006009 name: anther wall outer secondary parietal cell layer namespace: plant_anatomy def: "An anther wall secondary parietal cell layer formed towards the outside after an anther wall primary parietal cell layer undergoes a periclinal division." [GR:pj, ISBN:9780003686647, PMID:2476454] comment: In many angiosperms, including Arabidopsis, it differentiates into the anther wall endothecium. Alternatively, it may divide periclinally to form an anther wall endothecium externally and an anther wall middle layer internally. subset: Angiosperm synonym: "pollen sac outer secondary parietal cell layer" EXACT [] xref: OBO_SF_PO:3298010 is_a: PO:0006007 ! anther wall secondary parietal cell layer [Term] id: PO:0006010 name: primary parietal cell namespace: plant_anatomy def: "It is formed by the division of a archesporial cell." [PMID:2476454] is_a: PO:0009002 ! plant cell relationship: develops_from PO:0006014 ! male archesporial cell relationship: part_of PO:0006006 ! anther wall primary parietal cell layer [Term] id: PO:0006011 name: lateral vein namespace: plant_anatomy def: "An unbranched second order vein of the grass leaf blade." [GR:pj] is_a: PO:0020140 ! secondary vein [Term] id: PO:0006012 name: leaf collar namespace: plant_anatomy def: "A thin band of intercalary meristematic tissue at the junction of a leaf blade (lamina) and a leaf sheath found in grasses." [GR:pj, ISBN:0080374913] is_a: PO:0009013 ! meristem relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0006013 name: juice sac namespace: plant_anatomy def: "As found in citrus the mature juice sac is a swollen sac with a slender stalk and a sac wall lined with layers of tightly arranged cells. It develops from a single cell of the endocarp. Endocarp develops from the carpellary inner epidermis." [GR:pj, web:http\://www.chineseplantscience.com/earticle_read.asp?id=12171] subset: Citrus synonym: "juice vesicle" RELATED [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009086 ! endocarp [Term] id: PO:0006014 name: male archesporial cell namespace: plant_anatomy def: "An archesporial cell that is part of a microsporangium and divides to gives rise to a microsporocyte." [PMID:10465788, POC:curators] comment: Found in heterosporous ferns and seed plants. May also give rise to sterile cells. In seed plants, a male archesporial cell undergoes periclinal division, giving rise to an inner primary sporogenous cell layer and an outer primary parietal cell. synonym: "anther archesporial cell" NARROW [] synonym: "male archesporial initial" EXACT [] is_a: PO:0030056 ! archesporial cell relationship: part_of PO:0025202 ! microsporangium [Term] id: PO:0006015 name: female archesporial cell namespace: plant_anatomy def: "An archesporial cell that is part of a megasporangium and divides to give rise to a megasporocyte." [PMID:10465788, POC:curators] comment: Found in heterosporous ferns and seed plants. May also give rise to sterile cells. In the majority of flowering plants, including Arabidopsis, the female archesporial cell elongates and polarizes longitudinally, and directly differentiates into the megasporocyte or megaspore mother cell. In some flowering plants, it undergoes a periclinal division, and subsequently the inner cell differentiates into the megasporocyte. synonym: "female archesporial initial" EXACT [] synonym: "ovule archesporial cell" NARROW [] is_a: PO:0030056 ! archesporial cell relationship: part_of PO:0025201 ! megasporangium [Term] id: PO:0006016 name: leaf epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a leaf." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "foliage leaf epidermis" EXACT [] synonym: "phyllid epidermis" EXACT [] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0025034 ! leaf relationship: part_of PO:0025034 ! leaf [Term] id: PO:0006017 name: helobial endosperm namespace: plant_anatomy def: "An endosperm in which the first karyokinetic event is accompanied by the formation of a horizontal wall which divides the central cell into unequal regions. The larger one is the micropylar chamber in which cytokinesis does not occur and the smaller one is the chalazal chamber." [ISBN:0080374913] is_a: PO:0009089 ! endosperm [Term] id: PO:0006018 name: leaf adaxial epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that covers the adaxial/upper surface of a leaf." [POC:rw] comment: Used to refer to an adaxial epidermis of an entire leaf. More specific terms exist for leaf lamina adaxial epidermis and petiole adaxial epidermis. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "upper epidermis" RELATED [] is_a: PO:0006016 ! leaf epidermis [Term] id: PO:0006019 name: leaf abaxial epidermis namespace: plant_anatomy def: "A portion of leaf epidermis that covers the abaxial/lower surface of a leaf." [POC:curators] comment: Used to refer to an abaxial epidermis of an entire leaf. More specific terms exist for leaf lamina abaxial epidermis and petiole abaxial epidermis. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "lower epidermis" RELATED [] is_a: PO:0006016 ! leaf epidermis [Term] id: PO:0006020 name: lateral root apical meristem namespace: plant_anatomy alt_id: PO:0003013 def: "A root apical meristem found that is part of a lateral root." [GR:pj] comment: This is different from root lateral meristem. synonym: "apical meristem of lateral root" RELATED [] synonym: "lateral root meristem" RELATED [] is_a: PO:0020147 ! root apical meristem relationship: part_of PO:0000027 ! lateral root tip [Term] id: PO:0006021 name: adventitious root apical meristem namespace: plant_anatomy def: "A root apical meristem that is part of an adventitious root." [GR:pj] synonym: "crown root meristem" RELATED [] synonym: "seminal root meristem" RELATED [] is_a: PO:0020147 ! root apical meristem relationship: part_of PO:0000042 ! shoot-borne root [Term] id: PO:0006022 name: bundle sheath extension namespace: plant_anatomy def: "A strip of ground tissue present along the leaf veins and extending from the bundle sheath to the epidermis. It may be present on one or both sides of the vein and may consist of parenchyma or sclerenchyma." [ISBN:0080374913] is_a: PO:0025059 ! portion of ground tissue [Term] id: PO:0006023 name: bundle sheath namespace: plant_anatomy def: "A layer or layers of cells surrounding the vascular bundles of leaves. It may consist of parenchyma or sclerenchyma." [ISBN:0080374913] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0006024 name: parenchyma sheath namespace: plant_anatomy def: "A single layered, parenchymatous bundle sheath characterized by presence of large quantity of starch." [ISBN:0080374913] comment: Homologous to the endodermis. synonym: "starch sheath" RELATED [] is_a: PO:0006023 ! bundle sheath [Term] id: PO:0006025 name: mestome sheath namespace: plant_anatomy def: "The inner endodermal sheath of a two layered bundle sheath. The cells are smaller in diameter compared to those in outer wall (starch sheath). The cell  walls are thick and contain suberized lamellae. They are analogous to endodermis." [ISBN:0080374913] is_a: PO:0006023 ! bundle sheath [Term] id: PO:0006032 name: awn namespace: plant_anatomy def: "A long bristle-like appendage found on the tip or back of various parts of the grass spikelet." [APWeb:Glossary] subset: reference xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009037 ! lemma [Term] id: PO:0006033 name: paleal apiculus namespace: plant_anatomy def: "A short, abrupt, flexible point present at the apex of the palea." [GR:pj] subset: reference synonym: "apiculus" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009038 ! palea [Term] id: PO:0006034 name: leaflet margin namespace: plant_anatomy def: "The margin of the leaflet." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0020128 ! leaf margin relationship: part_of PO:0020049 ! leaflet [Term] id: PO:0006035 name: shoot epidermis namespace: plant_anatomy def: "A portion of epidermis that is part of a shoot system." [ISBN:047124529, POC:curators] comment: Often interrupted by stomata and other structures. The shoot epidermis is different from the root epidermis in its origin, function and structure. xref: OBO_SF_PO:3008016 is_a: PO:0005679 ! epidermis relationship: part_of PO:0009006 ! shoot system [Term] id: PO:0006036 name: root epidermis namespace: plant_anatomy alt_id: PO:0006037 def: "A portion of epidermis that is part of a root system." [ISBN:0080374913] comment: The root epidermis is different from the shoot epidermis in its origin, function and structure. synonym: "epiblem" RELATED [] synonym: "rhizodermis" RELATED [] xref: OBO_SF_PO:3008016 is_a: PO:0005679 ! epidermis relationship: part_of PO:0025025 ! root system [Term] id: PO:0006039 name: adventitious root epidermis namespace: plant_anatomy alt_id: PO:0006038 def: "A portion of root epidermis that is part of an adventitious root." [POC:rw] synonym: "crown root epidermis" RELATED [] is_a: PO:0006036 ! root epidermis relationship: part_of PO:0000042 ! shoot-borne root [Term] id: PO:0006040 name: sepal epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a sepal." [POC:curators] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009031 ! sepal relationship: part_of PO:0009031 ! sepal [Term] id: PO:0006041 name: petal epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a petal." [POC:curators] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009032 ! petal relationship: part_of PO:0009032 ! petal [Term] id: PO:0006042 name: velamen namespace: plant_anatomy def: "A multiseriate epidermis found in aerial roots of some monocots. Most of its cells are dead and store water like a sponge." [ISBN:0080374913] synonym: "velamen radicum" RELATED [] is_a: PO:0006036 ! root epidermis [Term] id: PO:0006043 name: integument epidermis namespace: plant_anatomy def: "A portion epidermis that is part of an integument." [GR:pj, POC:rw] is_a: PO:0005679 ! epidermis relationship: part_of PO:0020021 ! integument [Term] id: PO:0006044 name: inner integument epidermis namespace: plant_anatomy def: "The epidermis of the inner integument in an ovule." [GR:pj] is_a: PO:0006043 ! integument epidermis relationship: part_of PO:0020022 ! inner integument [Term] id: PO:0006045 name: outer integument epidermis namespace: plant_anatomy def: "The epidermis of the outer integument in an ovule." [GR:pj] is_a: PO:0006043 ! integument epidermis relationship: part_of PO:0020023 ! outer integument [Term] id: PO:0006048 name: seed coat epidermis namespace: plant_anatomy def: "A portion of epidermis that is part of a seed coat." [POC:rw] xref: OBO_SF_PO:3008016 is_a: PO:0005679 ! epidermis relationship: part_of PO:0009088 ! seed coat [Term] id: PO:0006049 name: scutellum epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that is part of the scutellum." [GR:pj] is_a: PO:0005679 ! epidermis is_a: PO:0025233 ! portion of embryo plant tissue relationship: part_of PO:0020110 ! scutellum [Term] id: PO:0006050 name: exotesta namespace: plant_anatomy def: "That part of the seed coat that develops from the outer surface of the outer integument." [GR:pj] synonym: "portion of exotesta tissue" EXACT [] synonym: "seed coat outer epidermis" RELATED [] is_a: PO:0006048 ! seed coat epidermis relationship: part_of PO:0020057 ! testa [Term] id: PO:0006051 name: endotesta namespace: plant_anatomy def: "That part of the seed coat that develops from the inner epidermis of the outer integument." [GR:pj] synonym: "portion of endotesta tissue" EXACT [] synonym: "seed coat inner epidermis" RELATED [] is_a: PO:0006048 ! seed coat epidermis relationship: part_of PO:0020057 ! testa [Term] id: PO:0006052 name: petal abaxial epidermis namespace: plant_anatomy def: "A portion of petal epidermis that covers the abaxial/lower surface of a petal." [POC:rw] is_a: PO:0006041 ! petal epidermis [Term] id: PO:0006053 name: petal adaxial epidermis namespace: plant_anatomy def: "A portion of petal epidermis that covers the adaxial/upper surface of a petal." [POC:rw] is_a: PO:0006041 ! petal epidermis [Term] id: PO:0006054 name: sepal abaxial epidermis namespace: plant_anatomy def: "A portion of sepal epidermis that covers the abaxial/lower surface of a sepal." [POC:rw] is_a: PO:0006040 ! sepal epidermis [Term] id: PO:0006055 name: sepal adaxial epidermis namespace: plant_anatomy def: "A portion of sepal epidermis that covers the adaxial/upper surface of a sepal." [POC:rw] is_a: PO:0006040 ! sepal epidermis [Term] id: PO:0006056 name: cotyledon epidermis namespace: plant_anatomy def: "A leaf epidermis that is part of a cotyledon." [POC:rw] is_a: PO:0006016 ! leaf epidermis relationship: part_of PO:0020030 ! cotyledon [Term] id: PO:0006057 name: cotyledon abaxial epidermis namespace: plant_anatomy def: "The abaxial/lower epidermal cell layer of the cotyledon." [GR:pj] is_a: PO:0006056 ! cotyledon epidermis [Term] id: PO:0006058 name: cotyledon adaxial epidermis namespace: plant_anatomy def: "The adaxial/upper epidermal cell layer of the cotyledon." [GR:pj] is_a: PO:0006056 ! cotyledon epidermis [Term] id: PO:0006060 name: filament epidermis namespace: plant_anatomy def: "A portion of stamen epidermis that is part of a filament." [POC:rw] is_a: PO:0025097 ! stamen epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009067 ! filament relationship: part_of PO:0009067 ! filament [Term] id: PO:0006061 name: stigma epidermis namespace: plant_anatomy def: "A portion of carpel epidermis that is part of a stigma." [PMID:11951033, POC:rw] is_a: PO:0025096 ! carpel epidermis relationship: part_of PO:0009073 ! stigma [Term] id: PO:0006062 name: style epidermis namespace: plant_anatomy def: "A portion of carpel epidermis that is part of a style." [POC:rw] synonym: "transmitting tract epidermis" RELATED [] is_a: PO:0025096 ! carpel epidermis relationship: part_of PO:0009074 ! style [Term] id: PO:0006063 name: ovary epidermis namespace: plant_anatomy def: "A portion of epidermis that is part of an ovary." [POC:rw] is_a: PO:0005679 ! epidermis relationship: part_of PO:0005022 ! ovary wall [Term] id: PO:0006065 name: hypocotyl endodermis namespace: plant_anatomy def: "A portion of endodermis that is part of a hypocotyl." [POC:curators] is_a: PO:0000252 ! endodermis relationship: part_of PO:0020100 ! hypocotyl [Term] id: PO:0006066 name: petiole parenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a petiole." [POC:rw] is_a: PO:0005421 ! parenchyma relationship: part_of PO:0020038 ! petiole [Term] id: PO:0006067 name: cambium-like transitional zone namespace: plant_anatomy def: "OBSOLETE. A cup-shaped region in the shoot apical meristem found between the central mother cell and the rib and peripheral zone. The cells of this zone are derived from the corpus intials, but in some cases they arise also from tunica initials." [ISBN:0080374913] comment: If found, this zone is a temporary feature mostly in Gymnosperms. synonym: "adaxial meristem" RELATED [] synonym: "leaf meristem" RELATED [] synonym: "ventral meristem" RELATED [] is_obsolete: true [Term] id: PO:0006068 name: sepal parenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a sepal." [POC:rw] is_a: PO:0005421 ! parenchyma relationship: part_of PO:0009031 ! sepal [Term] id: PO:0006069 name: petal parenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a petal." [POC:rw] is_a: PO:0005421 ! parenchyma relationship: part_of PO:0009032 ! petal [Term] id: PO:0006070 name: mesophyll namespace: plant_anatomy def: "The chloroplast-containing, photosynthetic parenchymatous tissue situated between the two epidermal layers of the leaf or leaf like organs." [GR:pj] subset: TraitNet is_a: PO:0005426 ! chlorenchyma [Term] id: PO:0006071 name: petal mesophyll namespace: plant_anatomy def: "The chloroplast-containing, photosynthetic parenchymatous tissue situated between the two epidermal layers of the petal." [GR:pj] is_a: PO:0006069 ! petal parenchyma is_a: PO:0006070 ! mesophyll [Term] id: PO:0006072 name: sepal mesophyll namespace: plant_anatomy def: "The chloroplast-containing, photosynthetic parenchymatous tissue situated between the two epidermal layers of the sepal." [GR:pj] is_a: PO:0006068 ! sepal parenchyma is_a: PO:0006070 ! mesophyll [Term] id: PO:0006073 name: intercalary meristem namespace: plant_anatomy def: "A shoot meristem separated from the apical meristem in the primary body by more or less mature tissues." [ISBN:0080374913, ISBN:0122151704] subset: TraitNet is_a: PO:0006079 ! shoot meristem [Term] id: PO:0006074 name: obsolete procambium namespace: plant_anatomy def: "A portion of primary cambium that undergoes differentiation to form the primary vascular tissue." [ISBN:0471244554] comment: This term was made obsolete because the parentage and definition changed slightly. It is replaced by PO:0025275. xref: OBO_SF_PO:3184905 is_obsolete: true replaced_by: PO:0025275 [Term] id: PO:0006075 name: primary phloem namespace: plant_anatomy def: "A portion of phloem tissue of the primary plant body." [ISBN:0122151704] comment: In stem or root it is differentiated behind the apical meristem. subset: TraitNet synonym: "portion of primary phloem tissue" EXACT [] is_a: PO:0005417 ! phloem [Term] id: PO:0006076 name: metaphloem namespace: plant_anatomy def: "Part of the primary phloem that differentiates after the protophloem and before the secondary phloem, if any of the latter is formed." [ISBN:0471245194] synonym: "portion of metaphloem tissue" EXACT [] is_a: PO:0009015 ! portion of vascular tissue relationship: part_of PO:0006075 ! primary phloem [Term] id: PO:0006077 name: protophloem namespace: plant_anatomy def: "The first-formed elements of the primary phloem." [ISBN:0471245194] synonym: "portion of protophloem tissue" EXACT [] is_a: PO:0009015 ! portion of vascular tissue relationship: part_of PO:0006075 ! primary phloem [Term] id: PO:0006078 name: primary vascular tissue namespace: plant_anatomy def: "OBSOLETE. The vascular tissue of the primary plant body at the embryonic stage." [GR:pj] comment: Redundant to sec ... is_obsolete: true [Term] id: PO:0006079 name: shoot meristem namespace: plant_anatomy def: "A meristem that is part of a shoot system." [GR:pj] subset: TraitNet is_a: PO:0009013 ! meristem relationship: part_of PO:0009006 ! shoot system [Term] id: PO:0006080 name: secondary vascular tissue namespace: plant_anatomy def: "OBSOLETE. The vascular tissue derived from the vascular cambium because of the secondary growth." [GR:pj] comment: Redundant sec phloem and xylem is_obsolete: true [Term] id: PO:0006081 name: primary root apical meristem namespace: plant_anatomy def: "A root apical meristem that is part of a primary root." [GR:pj] synonym: "apical meristem of primary root" RELATED [] synonym: "embryonic root meristem" RELATED [] is_a: PO:0020147 ! root apical meristem relationship: part_of PO:0000026 ! primary root tip [Term] id: PO:0006082 name: abaxial protoderm namespace: plant_anatomy def: "The outermost layer of the shoot apical meristem which gives rise to the abaxial/lower leaf epidermis." [GR:pj, ISBN:0080374913] is_a: PO:0006210 ! protoderm [Term] id: PO:0006083 name: adaxial protoderm namespace: plant_anatomy def: "The outermost layer of the shoot apical meristem which gives rise to the adaxial/upper leaf epidermis." [GR:pj, ISBN:0080374913] is_a: PO:0006210 ! protoderm [Term] id: PO:0006084 name: portion of transfusion tissue namespace: plant_anatomy def: "Tissue consisting of tracheids and parenchyma cells, associated with the vascular bundle." [ISBN:0080374913] comment: Found generally in gymnosperm leaves. is_a: PO:0009007 ! portion of plant tissue [Term] id: PO:0006085 name: root meristem namespace: plant_anatomy alt_id: PO:0003001 def: "A meristem that is part of a root system." [GR:pj] synonym: "meristematic zone" RELATED [] is_a: PO:0009013 ! meristem relationship: part_of PO:0025025 ! root system [Term] id: PO:0006086 name: accessory transfusion tissue namespace: plant_anatomy def: "OBSOLETE. The accessory tissue extending laterally into the mesophyll rather than remaining associated with the vascular bundles." [ISBN:0080374913] comment: Not in current literature. is_obsolete: true [Term] id: PO:0006087 name: proliferation tissue namespace: plant_anatomy def: "OBSOLETE. Tissue that develops from phloem parenchyma in the outer portion of the inner bark accommodating the expansion in circumference." [ISBN:0080374913] comment: check the definition. is_obsolete: true [Term] id: PO:0006088 name: primary sporogenous cell namespace: plant_anatomy def: "It is formed by the division of the male archesporial initial. After several mitotic divisions these cells differentiate into pollen mother cells." [PMID:12897248] is_a: PO:0009002 ! plant cell relationship: develops_from PO:0006014 ! male archesporial cell [Term] id: PO:0006089 name: anther primordium namespace: plant_anatomy def: "A primordium that will develop into anther." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0006090 name: organogenic callus namespace: plant_anatomy def: "A cultured plant callus that is capable of forming plant organs." [POC:curators] comment: Plant organs may be formed after the cultured plant callus is treated with plant growth regulators. synonym: "meristematic callus" RELATED [] xref: OBO_SF_PO:3286242 is_a: PO:0000009 ! cultured plant callus [Term] id: PO:0006091 name: embryogenic callus namespace: plant_anatomy def: "A cultured plant callus that is capable of forming somatic embryos." [POC:curators] comment: Somatic embryos may be formed after the cultured plant callus is treated with plant growth regulators. xref: OBO_SF_PO:3286242 is_a: PO:0000009 ! cultured plant callus [Term] id: PO:0006109 name: pith namespace: plant_anatomy def: "A maximal portion of parenchyma in the center of a shoot axis or root." [ISBN:0080280307] subset: TraitNet synonym: "medulla" EXACT [ISBN:0471244554 "Esau 1965"] xref: OBO_SF_PO:3011068 is_a: PO:0005421 ! parenchyma [Term] id: PO:0006200 name: fascicular cambium namespace: plant_anatomy def: "Vascular cambium  originating from procambium within vascular bundles or fascicles." [ISBN:047124529] is_a: PO:0005598 ! vascular cambium [Term] id: PO:0006201 name: interfascicular cambium namespace: plant_anatomy def: "Vascular cambium arising between vascular bundles or fascicles, in the interfascicular parenchyma or pith." [ISBN:047124529] is_a: PO:0005598 ! vascular cambium [Term] id: PO:0006202 name: interfascicular region namespace: plant_anatomy def: "A portion of ground tissue located between vascular bundles in a shoot axis." [ISBN:0471244554, ISBN:0716710072] comment: Inapplicable for nearly all monocots. synonym: "medullary ray" EXACT [ISBN:0471244554 "Esau 1965. Plant Anatomy, second edition"] synonym: "pith ray" EXACT [ISBN:0-7167-1007-2 "Raven et al. 2005"] xref: OBO_SF_PO:3011073 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0025029 ! shoot axis [Term] id: PO:0006203 name: pericycle namespace: plant_anatomy def: "A portion of ground tissue that is part of a root stele located between the phloem and endodermis." [ISBN:047124529] subset: reference synonym: "portion of pericycle tissue" EXACT [] synonym: "portion of pericyclic tissue" EXACT [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0020124 ! root stele [Term] id: PO:0006204 name: sporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) spores." [GR:pj] synonym: "meiocyte" EXACT [] synonym: "spore mother cell" EXACT [] xref: OBO_SF_PO:3299941 is_a: PO:0009002 ! plant cell relationship: develops_from PO:0030056 ! archesporial cell relationship: part_of PO:0025094 ! sporangium [Term] id: PO:0006205 name: spongy mesophyll cell namespace: plant_anatomy def: "Irregularly-shaped, chlorenchymatous cell, separated by large air spaces." [GR:pj] comment: Usually found in the abaxial/lower part of the leaf mesophyll as in a dorsiventral leaf, but between two palisade parenchyma layers in an isobilateral leaf. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "spongy parenchyma cell" RELATED [] is_a: PO:0004006 ! mesophyll cell relationship: part_of PO:0005647 ! spongy mesophyll [Term] id: PO:0006206 name: palisade mesophyll cell namespace: plant_anatomy def: "Elongated chlorenchymatous cell oriented perpendicular to the leaf surface and which is active in photosynthesis." [GR:pj] comment: Usually found in the adaxil/upper part of the leaf mesophyll. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "palisade parenchyma cell" RELATED [] is_a: PO:0004006 ! mesophyll cell relationship: part_of PO:0005648 ! palisade mesophyll [Term] id: PO:0006207 name: exodermal passage cell namespace: plant_anatomy def: "A short cell in the dimorphic type of exodermis with cell wall that remains non-thickened." [PMID:11709575, TAIR:ki] is_a: PO:0000353 ! passage cell relationship: part_of PO:0005772 ! exodermis [Term] id: PO:0006208 name: endodermal passage cell namespace: plant_anatomy def: "Cell in the endodermal layer of the root with cell wall that remains non-thickened." [TAIR:ki] is_a: PO:0000353 ! passage cell relationship: part_of PO:0000252 ! endodermis [Term] id: PO:0006209 name: lateral root epidermis namespace: plant_anatomy def: "OBSOLETE. The outer most cell layer of the lateral roots." [GR:pj] is_obsolete: true [Term] id: PO:0006210 name: protoderm namespace: plant_anatomy def: "A portion of meristem tissue that develops from the outer layer of an apical meristem and gives rise to a portion of epidermis." [ISBN:047124529, POC:curators] comment: It may or may not arise from independent initials.  Some researchers also call it an epidermis in meristematic state. synonym: "dermatogen cell" RELATED [] xref: OBO_SF_PO:3016651 is_a: PO:0009013 ! meristem [Term] id: PO:0006211 name: separation layer namespace: plant_anatomy def: "A portion of plant tissue that is part of an abscission zone and contains cells that develop an abnormal wall chemistry and swelling resulting in their easily being pulled apart along the pectin-rich middle lamella." [ISBN:0122151704] comment: Directly involved in the weakening process of abscission. is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0000146 ! abscission zone [Term] id: PO:0006212 name: protective layer namespace: plant_anatomy def: "A portion of plant tissue composed of a layer of cells that is part of the abscission zone that have lignin and suberin depositions and are found on the axial side of the break or exposed surface of abscission." [ISBN:0122151704] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0000146 ! abscission zone [Term] id: PO:0006213 name: root aerenchyma namespace: plant_anatomy def: "Parenchyma tissue containing particularly large intercellular spaces in the tissue of roots." [GR:pj] subset: TraitNet is_a: PO:0005702 ! aerenchyma relationship: part_of PO:0009005 ! root [Term] id: PO:0006214 name: stem aerenchyma namespace: plant_anatomy def: "A portion of aerenchyma that is part of a stem." [POC:curators] subset: TraitNet is_a: PO:0005702 ! aerenchyma relationship: part_of PO:0009047 ! stem [Term] id: PO:0006215 name: leaf aerenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue containing particularly large intercellular spaces in the leaf mesophyll." [GR:pj, POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0005702 ! aerenchyma relationship: part_of PO:0025034 ! leaf [Term] id: PO:0006216 name: internal phloem namespace: plant_anatomy def: "Primary phloem tissue positioned internal to the primary xylem." [ISBN:0122151704] synonym: "intraxylary phloem" RELATED [] is_a: PO:0006075 ! primary phloem [Term] id: PO:0006218 name: exotegmen namespace: plant_anatomy def: "That part of the seed coat that develops from the outer surface of the inner integument." [GR:pj] is_a: PO:0006048 ! seed coat epidermis relationship: part_of PO:0020056 ! tegmen [Term] id: PO:0006219 name: endotegmen namespace: plant_anatomy def: "That part of the seed coat that develops from the inner epidermis of the inner integument." [GR:pj] is_a: PO:0006048 ! seed coat epidermis relationship: part_of PO:0020056 ! tegmen [Term] id: PO:0006220 name: central endosperm namespace: plant_anatomy def: "A portion of plant tissue that is the central region of an endosperm, composed of cells that are significantly larger than those at the periphery, especially the aleurone and sub-aleurone layers." [TAIR:ki] comment: Also called starchy endosperm region (characteristic of some grasses). synonym: "portion of central endosperm tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009089 ! endosperm [Term] id: PO:0006221 name: articulated laticifer cell namespace: plant_anatomy def: "A laticifer cell in which the walls between contiguous cells may partly or completely disappear." [ISBN:0471245208, TAIR:ki] synonym: "laticiferous vessel" RELATED [] is_a: PO:0025031 ! laticifer cell relationship: part_of PO:0005006 ! articulated laticifer [Term] id: PO:0006222 name: non-articulated laticifer cell namespace: plant_anatomy def: "A laticifer cell that elongates indefinitely and grows intrusively between the walls of meristematic cells." [PMID:11732189] synonym: "simple laticifer" RELATED [] is_a: PO:0025031 ! laticifer cell relationship: part_of PO:0005007 ! non-articulated laticifer [Term] id: PO:0006300 name: obsolete plant structure namespace: plant_anatomy def: "OBSOLETE. The instances of this parent term are those anatomical terms which have become obsolete." [GR:pj] is_obsolete: true [Term] id: PO:0006301 name: corpus namespace: plant_anatomy def: "OBSOLETE. Group of cells located beneath anticlinally dividing peripheral layers (tunica) and dividing in many planes. In apical shoot meristem. Such division cause the increase in the volume of shoot." [GR:pj, ISBN:0080374913] comment: The term has been made obsolete because this concept is used in a very loose sense. is_obsolete: true [Term] id: PO:0006302 name: tunica namespace: plant_anatomy def: "OBSOLETE. The outermost layer or layers in the shoot apical meristem of the Angiosperms in which the plane of division is almost anticlinal. This layer contributes to surface growth." [GR:pj, ISBN:047124529] comment: The term has been made obsolete because this concept is used in a very loose sense. is_obsolete: true [Term] id: PO:0006303 name: L1 namespace: plant_anatomy def: "OBSOLETE. The outer layer of the tunica." [GR:pj] comment: A similar term L1 meristem (PO:0009020) occurs. is_obsolete: true replaced_by: PO:0009020 [Term] id: PO:0006304 name: L2 namespace: plant_anatomy def: "OBSOLETE. The second layer of the tunica." [GR:pj] comment: A similar term L2 meristem (PO:0009021) occurs. is_obsolete: true replaced_by: PO:0009021 [Term] id: PO:0006305 name: L3 namespace: plant_anatomy def: "OBSOLETE. The innermost layer of the tunica." [GR:pj] comment: A similar term L3 meristem (PO:0009022) occurs. is_obsolete: true replaced_by: PO:0009022 [Term] id: PO:0006306 name: obsolete shoot procambium namespace: plant_anatomy def: "A derivative of the apical meristem which undergoes differentiation to form the primary vascular tissue of a shoot." [GR:pj] comment: This term was made obsolete because the definition was changed. It was replaced by PO:0025276. xref: OBO_SF_PO:3184921 is_obsolete: true replaced_by: PO:0025276 [Term] id: PO:0006307 name: root procambium namespace: plant_anatomy def: "A portion of procambium tissue that undergoes differentiation to form the primary vascular tissue of a root." [POC:rw] comment: A derivative of the root apical meristem. is_a: PO:0025275 ! procambium relationship: part_of PO:0020147 ! root apical meristem [Term] id: PO:0006308 name: root lateral meristem namespace: plant_anatomy def: "Meristem of the root located parallel to the sides of the axis." [ISBN:047124529] comment: Generally causes root thickening. Not to be confused with lateral root meristem, which is the meristem of the lateral root. is_a: PO:0006085 ! root meristem is_a: PO:0020145 ! lateral meristem relationship: part_of PO:0020121 ! lateral root [Term] id: PO:0006309 name: tassel spikelet namespace: plant_anatomy def: "Ultimate inflorescence branch of the maize tassel." [GR:pj] subset: Maize is_a: PO:0009051 ! spikelet relationship: develops_from PO:0006358 ! tassel spikelet pair meristem relationship: part_of PO:0020126 ! tassel [Term] id: PO:0006310 name: tassel floret namespace: plant_anatomy def: "Flowers of the spikelets of maize tassel." [GR:pj] subset: Maize is_a: PO:0006318 ! Poaceae floret relationship: part_of PO:0006309 ! tassel spikelet [Term] id: PO:0006311 name: tassel sessile spikelet namespace: plant_anatomy def: "Ultimate inflorescence branch of the maize tassel without a pedicel, developing from the spikelet pair meristem." [GR:pj] subset: Maize is_a: PO:0006309 ! tassel spikelet [Term] id: PO:0006312 name: tassel pedicellate spikelet namespace: plant_anatomy def: "Ultimate inflorescence branch of the maize tassel with a pedicel, developing from the spikelet pair meristem." [GR:pj] subset: Maize is_a: PO:0006309 ! tassel spikelet [Term] id: PO:0006313 name: lower floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "The lower of the two florets of the pedicellate spikelet of a maize tassel." [GR:pj] is_a: PO:0006310 ! tassel floret relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006314 name: upper floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "One of the two florets placed above the lower floret on the pedicellate spikelet rachilla of a maize tassel." [GR:pj] is_a: PO:0006310 ! tassel floret relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006315 name: lower floret of sessile spikelet of tassel namespace: plant_anatomy def: "The lower of the two florets of the sessile spikelet of a maize tassel." [GR:pj] is_a: PO:0006310 ! tassel floret relationship: part_of PO:0006311 ! tassel sessile spikelet [Term] id: PO:0006316 name: upper floret of sessile spikelet of tassel namespace: plant_anatomy def: "One of the two florets placed above the lower floret on the sessile spikelet rachilla of a maize tassel." [GR:pj] is_a: PO:0006310 ! tassel floret relationship: part_of PO:0006311 ! tassel sessile spikelet [Term] id: PO:0006317 name: gynoecium of tassel floret namespace: plant_anatomy def: "Collectively the carpels of a maize tassel floret." [GR:pj] comment: The development of the gynoecium in the tassel floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006384 ! Poaceae gynoecium relationship: part_of PO:0006310 ! tassel floret [Term] id: PO:0006318 name: Poaceae floret namespace: plant_anatomy alt_id: PO:0025090 def: "A floret that is part of a spikelet." [Poc:curators] comment: Found in Poaceae. It is not clear what the lemma, palea and lodicule correspond to in conventional flowers, therefore we are not making any assumptions of homology at the present time. subset: Maize subset: Poaceae subset: reference is_a: PO:0009082 ! floret relationship: develops_from PO:0006329 ! Poaceae floret meristem relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0006319 name: spikelet pedicel namespace: plant_anatomy def: "Inflorescence branch that terminates in a spikelet." [Poc:curators] comment: This is not a pedicel in the strict sense, but is the ultimate naked part of the inflorescence axis. is_a: PO:0009052 ! pedicel relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0006320 name: ear spikelet namespace: plant_anatomy def: "Ultimate inflorescence branch of the maize ear." [GR:pj] is_a: PO:0009051 ! spikelet relationship: part_of PO:0020136 ! Zea ear [Term] id: PO:0006321 name: second order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a first order inflorescence axis." [POC:rw] subset: Angiosperm synonym: "primary inflorescence branch" EXACT [] synonym: "second order inflorescence branch" RELATED [POC:rw "This is the old name for this term. It was renamed for clarity."] xref: OBO_SF_PO:3150504 is_a: PO:0009081 ! inflorescence branch [Term] id: PO:0006322 name: third order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a second order inflorescence axis." [POC:rw] synonym: "secondary inflorescence branch" EXACT [] synonym: "third order inflorescence branch" RELATED [POC:rw "This is the old name for this term. It was renamed for clarity."] xref: OBO_SF_PO:3150504 is_a: PO:0009081 ! inflorescence branch [Term] id: PO:0006323 name: tassel branch namespace: plant_anatomy def: "Any branch forming from the primary or higher order tassel axes." [GR:pj] is_a: PO:0009081 ! inflorescence branch relationship: part_of PO:0020126 ! tassel [Term] id: PO:0006324 name: central spike of tassel namespace: plant_anatomy def: "A first order inflorescence axis that is the central axis of a tassel." [POC:rw] synonym: "tassel rachis" RELATED [] is_a: PO:0025104 ! first order inflorescence axis relationship: part_of PO:0020126 ! tassel [Term] id: PO:0006325 name: inflorescence node namespace: plant_anatomy def: "A shoot node that is part of an inflorescence axis and where a spikelet, flower, floret or inflorescence branch is attached." [GR:pj] is_a: PO:0005004 ! shoot node relationship: part_of PO:0020122 ! inflorescence axis [Term] id: PO:0006326 name: inflorescence internode namespace: plant_anatomy def: "A shoot internode that is part of an inflorescence axis." [POC:curators] is_a: PO:0005005 ! shoot internode relationship: part_of PO:0020122 ! inflorescence axis [Term] id: PO:0006327 name: spikelet meristem namespace: plant_anatomy def: "An inflorescence apical meristem that gives rise to the two or more florets of a grass inflorescence." [GR:pj] is_a: PO:0009108 ! inflorescence apical meristem relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0006328 name: spikelet pair meristem namespace: plant_anatomy def: "The meristem that produces two spikelet meristems, each of which produces two floral meristems." [GR:pj] comment: Found in some grass inflorescences. is_a: PO:0006327 ! spikelet meristem [Term] id: PO:0006329 name: Poaceae floret meristem namespace: plant_anatomy alt_id: PO:0025091 def: "A floral meristem that is part of a spikelet." [POC:rw] comment: Found in Poaceae. subset: Maize subset: Poaceae is_a: PO:0000229 ! flower meristem relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0006330 name: gynophore namespace: plant_anatomy def: "A shoot axis that is an elongation of the floral axis that supports the carpels." [ISBN:0-521-25134-6] comment: A gynophore is only present when there is an elongation of the axis between the androecium and gynoecium. subset: reference is_a: PO:0025029 ! shoot axis relationship: part_of PO:0009046 ! flower [Term] id: PO:0006331 name: seed raphe namespace: plant_anatomy def: "A cardinal organ part that is a ridge on a seed that develops from a raphe." [ISBN:047124529, POC:curators] is_a: PO:0025001 ! cardinal organ part relationship: develops_from PO:0020027 ! raphe relationship: part_of PO:0009010 ! seed [Term] id: PO:0006332 name: seed funicle namespace: plant_anatomy def: "A stalk that is attached to a seed and is the remnants of a funicle." [POC:curators] is_a: PO:0025066 ! stalk relationship: develops_from PO:0020006 ! funicle relationship: part_of PO:0009010 ! seed [Term] id: PO:0006333 name: seed chalaza namespace: plant_anatomy def: "A remnant of the ovular chalaza that is part of the seed." [POC:curators] synonym: "portion of seed chalaza" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0020026 ! chalaza relationship: part_of PO:0009010 ! seed [Term] id: PO:0006334 name: seed micropyle namespace: plant_anatomy def: "A plant anatomical space that is enclosed by and forms an opening in a seed coat at the apex of a seed and is the remnant of a micropyle." [POC:curators] subset: TraitNet is_a: PO:0025117 ! plant anatomical space relationship: develops_from PO:0020025 ! micropyle relationship: part_of PO:0009088 ! seed coat [Term] id: PO:0006336 name: seed obturator namespace: plant_anatomy def: "An outgrowth of the seed funicle, that forms a bridge between the seed micropyle and other tissues. It is also a remnant form of the obturator found in the ovular funicle." [GR:pj] synonym: "portion of seed obturator tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0020029 ! obturator relationship: part_of PO:0006332 ! seed funicle [Term] id: PO:0006337 name: inflorescence bract of ear namespace: plant_anatomy def: "The leaf subtending an ear of corn and acting as outer envelope of the ear." [GR:pj] synonym: "corn husk" RELATED [] synonym: "husk" RELATED [] synonym: "husk leaf" RELATED [] is_a: PO:0009054 ! inflorescence bract relationship: part_of PO:0020136 ! Zea ear [Term] id: PO:0006338 name: embryo leaf namespace: plant_anatomy def: "A vascular leaf that is part of a plant embryo and is one of the first few leaves to develop from the embryonic shoot apical meristem." [GR:pj] comment: This term is used to described not yet fully-developed leaves that are part of an embryo. synonym: "embryonic leaf" EXACT [] is_a: PO:0009025 ! vascular leaf is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0006339 name: juvenile leaf namespace: plant_anatomy def: "Distinct from adult leaves, being characterized by particular anatomical traits namely, wax and trichome distribution, presence or absence of epidermal cell types, cell wall shape and biochemistry." [GR:pj, MaizeGDB:lv] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. The first juvenile leaves in Poaceae are e.g. the embryonic leaves found in the grass kernel (caryopsis). synonym: "juvenile phyllid" NARROW [] is_a: PO:0025034 ! leaf [Term] id: PO:0006340 name: adult leaf namespace: plant_anatomy def: "Adult leaves are characterized by particular anatomical traits namely, wax and trichome distribution, presence or absence of epidermal cell types, cell wall shape and biochemistry." [GR:pj, MaizeGDB:lv] comment: The adult leaves are placed above the juvenile (oldest) leaves. However in some plants the juvenile leaves may go on to establish as adult leaves. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "adult phyllid" NARROW [] is_a: PO:0025034 ! leaf [Term] id: PO:0006341 name: primary shoot namespace: plant_anatomy def: "The shoot developing from the embryonic shoot apical meristem." [UMSL:fz] synonym: "main stalk" RELATED [] is_a: PO:0009006 ! shoot system [Term] id: PO:0006342 name: infructescence namespace: plant_anatomy def: "A reproductive shoot system that develops from an inflorescence and has as parts all of the shoot axes distal to the most distal foliage leaf of a shoot axis and all of the fruits borne by those axes." [POC:rw] subset: Angiosperm subset: Musa synonym: "banana bunch" NARROW [CO_125:0000014] synonym: "fruit bunch" RELATED [] xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:3147080 xref: OBO_SF_PO:3147085 is_a: PO:0025082 ! reproductive shoot system relationship: develops_from PO:0009049 ! inflorescence relationship: has_part PO:0009001 ! fruit [Term] id: PO:0006343 name: axillary shoot system namespace: plant_anatomy def: "A shoot-borne shoot system that develops from an axillary vegetative bud." [POC:curators] subset: Musa synonym: "axillary branch" RELATED [] synonym: "Musa sucker" NARROW [CO_125:0000042 "A shoot system arrising form an axillary bud at the base of a Musa plant."] xref: OBO_SF_PO:3147109 is_a: PO:0004545 ! shoot-borne shoot system [Term] id: PO:0006344 name: shoot lateral meristem namespace: plant_anatomy def: "A shoot meristem located parallel to the sides of the axis." [Poc:curators] is_a: PO:0006079 ! shoot meristem is_a: PO:0020145 ! lateral meristem [Term] id: PO:0006345 name: pollen tube namespace: plant_anatomy def: "A tubular cell extension formed by the germinating pollen grain; carries the male gametes into the ovule." [ISBN:0471245208] comment: This term was made obsolete because it is a subcellular component. See GO for the term pollen tube (GO:0090406). Since a pollen tube is part_of a pollen tube cell, annotations for pollen tube may also go to the more general term pollen tube cell (PO:0025195). subset: reference subset: TraitNet is_obsolete: true consider: PO:0025195 [Term] id: PO:0006346 name: leaf intercalary meristem namespace: plant_anatomy def: "An intercalary meristem in the primary body of the leaf separated from the apical meristem by non-meristematic tissues." [GR:pj] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006073 ! intercalary meristem relationship: part_of PO:0025034 ! leaf [Term] id: PO:0006347 name: stem intercalary meristem namespace: plant_anatomy def: "An intercalary meristem in the primary body of stem separated from the apical meristem by more or less mature tissues." [GR:pj] is_a: PO:0006073 ! intercalary meristem relationship: part_of PO:0020142 ! stem internode [Term] id: PO:0006348 name: ear pedicellate spikelet namespace: plant_anatomy def: "Ultimate pedicellate inflorescence branch of the maize ear that develops from the spikelet pair meristem." [GR:pj] is_a: PO:0006320 ! ear spikelet [Term] id: PO:0006349 name: ear sessile spikelet namespace: plant_anatomy def: "Ultimate sessile inflorescence branch of the maize ear that develops from the spikelet pair meristem." [GR:pj] is_a: PO:0006320 ! ear spikelet [Term] id: PO:0006350 name: upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The uppermost of the two florets of the pedicellate spikelet rachilla of a maize ear. The upper floret on the ear usually develops into a functional one." [GR:pj] is_a: PO:0006354 ! ear floret relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006351 name: lower floret of sessile spikelet of ear namespace: plant_anatomy def: "The lower of the two florets on the sessile spikelet of a maize ear." [GR:pj] comment: This floret does not usually develop into a functional one. is_a: PO:0006354 ! ear floret relationship: part_of PO:0006349 ! ear sessile spikelet [Term] id: PO:0006352 name: upper floret of sessile spikelet of ear namespace: plant_anatomy def: "One of the two florets placed above the lower floret on the sessile spikelet rachilla of a maize ear. This floret usually develops into a functional one." [GR:pj] is_a: PO:0006354 ! ear floret relationship: part_of PO:0006349 ! ear sessile spikelet [Term] id: PO:0006353 name: lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The lower of the two florets of the pedicellate spikelet rachilla of a maize ear." [GR:pj] comment: The lower floret on the ear does not usually develop into a functional one. is_a: PO:0006354 ! ear floret relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006354 name: ear floret namespace: plant_anatomy def: "Small flowers of the spikelets of maize ear." [GR:pj] is_a: PO:0006318 ! Poaceae floret relationship: part_of PO:0006320 ! ear spikelet [Term] id: PO:0006355 name: androecium of ear floret namespace: plant_anatomy def: "Collectively the stamens of maize ear floret." [GR:pj] comment: The development of the androecium in the ear floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006471 ! Zea androecium relationship: part_of PO:0006354 ! ear floret [Term] id: PO:0006356 name: lemma of tassel floret namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize tassel floret." [GR:pj] is_a: PO:0009037 ! lemma relationship: part_of PO:0006310 ! tassel floret [Term] id: PO:0006358 name: tassel spikelet pair meristem namespace: plant_anatomy def: "The meristem present on short tassel branch that produces two spikelet meristems, each of which produces two floral meristems in a maize tassel." [GR:pj] subset: Maize is_a: PO:0006328 ! spikelet pair meristem is_a: PO:0009107 ! tassel lateral meristem relationship: part_of PO:0009102 ! short tassel branch [Term] id: PO:0006359 name: palea of tassel floret namespace: plant_anatomy def: "In a maize tassel floret, the upper of the two bracts enclosing a flower." [GR:pj] is_a: PO:0009038 ! palea relationship: part_of PO:0006310 ! tassel floret [Term] id: PO:0006360 name: ear spikelet pair meristem namespace: plant_anatomy def: "A meristem that produces two spikelet meristems, each of which produces two floral meristems in a maize ear." [GR:pj] is_a: PO:0006328 ! spikelet pair meristem is_a: PO:0009110 ! ear lateral meristem [Term] id: PO:0006361 name: palea of ear floret namespace: plant_anatomy def: "In a maize ear floret, the upper of the two bracts enclosing a flower." [GR:pj] is_a: PO:0009038 ! palea relationship: part_of PO:0006354 ! ear floret [Term] id: PO:0006362 name: embryo shoot apical meristem namespace: plant_anatomy def: "A vegetative shoot apical meristem at the apex of the embryonic axis." [GR:pj] synonym: "embryonic shoot apical meristem" EXACT [] is_a: PO:0008016 ! vegetative shoot apical meristem is_a: PO:0025233 ! portion of embryo plant tissue relationship: part_of PO:0019018 ! embryo axis [Term] id: PO:0006363 name: lemma of ear floret namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize ear floret." [GR:pj] is_a: PO:0009037 ! lemma relationship: part_of PO:0006354 ! ear floret [Term] id: PO:0006365 name: gynoecium of ear floret namespace: plant_anatomy def: "Collectively the carpels of a maize ear floret." [GR:pj] is_a: PO:0006384 ! Poaceae gynoecium relationship: part_of PO:0006354 ! ear floret [Term] id: PO:0006366 name: androecium of tassel floret namespace: plant_anatomy def: "Collectively the stamens of one floret of a tassel inflorescence of maize." [GR:pj] is_a: PO:0006471 ! Zea androecium relationship: part_of PO:0006310 ! tassel floret [Term] id: PO:0006367 name: glume of ear spikelet namespace: plant_anatomy def: "A bract in the ear inflorescence of a maize plant, subtending two florets." [GR:pj] is_a: PO:0009039 ! glume relationship: part_of PO:0006320 ! ear spikelet [Term] id: PO:0006368 name: glume of tassel spikelet namespace: plant_anatomy def: "A bract in the tassel inflorescence of a maize plant, subtending two florets." [GR:pj] is_a: PO:0009039 ! glume relationship: part_of PO:0006309 ! tassel spikelet [Term] id: PO:0006369 name: lower glume of ear spikelet namespace: plant_anatomy def: "The proximal/basal of the two glumes in the ear spikelet." [GR:pj] is_a: PO:0006002 ! lower glume is_a: PO:0006367 ! glume of ear spikelet [Term] id: PO:0006370 name: upper glume of tassel spikelet namespace: plant_anatomy def: "The apical/distal of the two glumes in the tassel spikelet." [GR:pj] is_a: PO:0006004 ! upper glume is_a: PO:0006368 ! glume of tassel spikelet [Term] id: PO:0006371 name: upper glume of ear spikelet namespace: plant_anatomy def: "TThe apical/distal of the two glumes in the ear spikelet." [GR:pj] is_a: PO:0006004 ! upper glume is_a: PO:0006367 ! glume of ear spikelet [Term] id: PO:0006372 name: lower glume of tassel spikelet namespace: plant_anatomy def: "The proximal/basal of the two glumes in the tassel spikelet." [GR:pj] is_a: PO:0006002 ! lower glume is_a: PO:0006368 ! glume of tassel spikelet [Term] id: PO:0006373 name: ear floret meristem namespace: plant_anatomy def: "Apical shoot meristem that gives rise to the organs of a maize ear floret." [GR:pj] subset: Maize is_a: PO:0006329 ! Poaceae floret meristem is_a: PO:0009109 ! ear meristem relationship: part_of PO:0006320 ! ear spikelet [Term] id: PO:0006374 name: tassel floret meristem namespace: plant_anatomy def: "Apical meristem that gives rise to the organs of a maize tassel floret." [GR:pj] subset: Maize is_a: PO:0006329 ! Poaceae floret meristem is_a: PO:0009106 ! tassel meristem relationship: part_of PO:0006309 ! tassel spikelet [Term] id: PO:0006375 name: ear apical meristem namespace: plant_anatomy def: "An inflorescence apical meristem that gives rise to the maize ear." [GR:pj] subset: Maize is_a: PO:0009108 ! inflorescence apical meristem is_a: PO:0009109 ! ear meristem relationship: part_of PO:0006505 ! central spike of ear [Term] id: PO:0006376 name: tassel apical meristem namespace: plant_anatomy def: "An inflorescence apical meristem that gives rise to the maize tassel." [GR:pj] subset: Maize is_a: PO:0009106 ! tassel meristem is_a: PO:0009108 ! inflorescence apical meristem relationship: part_of PO:0006324 ! central spike of tassel [Term] id: PO:0006377 name: tassel spikelet meristem namespace: plant_anatomy def: "Apical meristem that gives rise to the upper and lower florets of the maize tassel spikelets." [GR:pj] is_a: PO:0006327 ! spikelet meristem is_a: PO:0009106 ! tassel meristem [Term] id: PO:0006378 name: ear spikelet meristem namespace: plant_anatomy def: "Apical meristem that gives rise to the upper and lower florets of the maize ear spikelet." [GR:pj] subset: Maize is_a: PO:0006327 ! spikelet meristem is_a: PO:0009109 ! ear meristem [Term] id: PO:0006379 name: tassel spikelet rachilla namespace: plant_anatomy def: "The axis of the tassel spikelet, above the glumes." [GR:pj] subset: Maize is_a: PO:0006323 ! tassel branch is_a: PO:0009080 ! spikelet rachilla relationship: part_of PO:0006309 ! tassel spikelet [Term] id: PO:0006380 name: ear spikelet rachilla namespace: plant_anatomy def: "The axis of the ear spikelet, above the glumes." [GR:pj] is_a: PO:0009080 ! spikelet rachilla relationship: part_of PO:0006320 ! ear spikelet [Term] id: PO:0006381 name: lodicule of tassel floret namespace: plant_anatomy def: "In a tassel floret, one of two or three tiny scales or flaps of tissue outside the stamens, possibly representing reduced perianth segments." [APWeb:Glossary, GR:pj] is_a: PO:0009036 ! lodicule relationship: part_of PO:0006310 ! tassel floret [Term] id: PO:0006382 name: lodicule of ear floret namespace: plant_anatomy def: "In a Maize ear floret, one of two or three tiny scales or flaps of tissue, possibly representing reduced perianth segments." [APWeb:Glossary, GR:pj] is_a: PO:0009036 ! lodicule relationship: part_of PO:0006354 ! ear floret [Term] id: PO:0006383 name: Poaceae androecium namespace: plant_anatomy def: "Collectively the stamens of one grass floret." [GR:pj] is_a: PO:0009061 ! androecium relationship: part_of PO:0006318 ! Poaceae floret [Term] id: PO:0006384 name: Poaceae gynoecium namespace: plant_anatomy alt_id: PO:0006357 alt_id: PO:0025089 def: "A gynoecium that is part of a Poaceae floret." [POC:rw] comment: Gynoecium (sensu Zea) was merged with Poaceae gynoecium, because the Zea gynoecium is not structurally distinct from the Poaceae gynoecium. Hierarchy for gynoecium now matches floret and spikelet. subset: Maize subset: Poaceae synonym: "Zea gynoecium" NARROW [] is_a: PO:0009062 ! gynoecium relationship: part_of PO:0006318 ! Poaceae floret [Term] id: PO:0006385 name: lower glume of pedicellate spikelet of tassel namespace: plant_anatomy def: "The proximal/basal of the two glumes in the tassel pedicellate spikelet." [GR:pj] is_a: PO:0006372 ! lower glume of tassel spikelet relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006386 name: lower glume of sessile spikelet of tassel namespace: plant_anatomy def: "The proximal/basal of the two glumes in the tassel sessile spikelet." [GR:pj] is_a: PO:0006372 ! lower glume of tassel spikelet relationship: part_of PO:0006311 ! tassel sessile spikelet [Term] id: PO:0006387 name: upper glume of sessile spikelet of tassel namespace: plant_anatomy def: "The apical/distal of the two glumes in a tassel sessile spikelet." [GR:pj] is_a: PO:0006370 ! upper glume of tassel spikelet relationship: part_of PO:0006311 ! tassel sessile spikelet [Term] id: PO:0006388 name: upper glume of pedicellate spikelet of tassel namespace: plant_anatomy def: "The apical/distal of the two glumes in a tassel pedicellate spikelet." [GR:pj] is_a: PO:0006370 ! upper glume of tassel spikelet relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006389 name: rachilla of sessile spikelet of tassel namespace: plant_anatomy def: "The axis of the tassel sessile spikelet, above the glumes." [GR:pj] is_a: PO:0006379 ! tassel spikelet rachilla relationship: part_of PO:0006311 ! tassel sessile spikelet relationship: part_of PO:0006349 ! ear sessile spikelet [Term] id: PO:0006390 name: rachilla of pedicellate spikelet of tassel namespace: plant_anatomy def: "The axis of the tassel pedicellate spikelet, above the glumes." [GR:pj] is_a: PO:0006379 ! tassel spikelet rachilla relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006391 name: gynoecium of lower floret of sessile spikelet of tassel namespace: plant_anatomy def: "Collectively the carpels of a lower floret of sessile spikelet of maize tassel." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006317 ! gynoecium of tassel floret relationship: part_of PO:0006315 ! lower floret of sessile spikelet of tassel [Term] id: PO:0006392 name: androecium of upper floret of sessile spikelet of tassel namespace: plant_anatomy def: "Collectively the stamens of upper floret of a sessile spikelet of tassel inflorescence of maize." [GR:pj] is_a: PO:0006366 ! androecium of tassel floret relationship: part_of PO:0006316 ! upper floret of sessile spikelet of tassel [Term] id: PO:0006393 name: androecium of lower floret of sessile spikelet of tassel namespace: plant_anatomy def: "Collectively the stamens of lower floret of a sessile spikelet of tassel inflorescence of maize." [GR:pj] is_a: PO:0006366 ! androecium of tassel floret relationship: part_of PO:0006315 ! lower floret of sessile spikelet of tassel [Term] id: PO:0006394 name: gynoecium of upper floret of sessile spikelet of tassel namespace: plant_anatomy def: "Collectively the carpels of a upper floret of sessile spikelet of maize tassel." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006317 ! gynoecium of tassel floret relationship: part_of PO:0006316 ! upper floret of sessile spikelet of tassel [Term] id: PO:0006395 name: lemma of upper floret of sessile spikelet of tassel namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize tassel sessile spikelet upper floret." [GR:pj] is_a: PO:0006356 ! lemma of tassel floret relationship: part_of PO:0006316 ! upper floret of sessile spikelet of tassel [Term] id: PO:0006397 name: lemma of lower floret of sessile spikelet of tassel namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize tassel sessile spikelet lower floret." [GR:pj] is_a: PO:0006356 ! lemma of tassel floret relationship: part_of PO:0006315 ! lower floret of sessile spikelet of tassel [Term] id: PO:0006399 name: palea of lower floret of sessile spikelet of tassel namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize tassel sessile spikelet lower floret." [GR:pj] is_a: PO:0006359 ! palea of tassel floret relationship: part_of PO:0006315 ! lower floret of sessile spikelet of tassel [Term] id: PO:0006401 name: palea of upper floret of sessile spikelet of tassel namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize tassel sessile spikelet upper floret." [GR:pj] is_a: PO:0006359 ! palea of tassel floret relationship: part_of PO:0006316 ! upper floret of sessile spikelet of tassel [Term] id: PO:0006403 name: gynoecium of lower floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "Collectively the carpels of a lower floret of pedicellate spikelet of maize tassel." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006317 ! gynoecium of tassel floret relationship: part_of PO:0006313 ! lower floret of pedicellate spikelet of tassel [Term] id: PO:0006404 name: gynoecium of upper floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "Collectively the carpels of a upper floret of pedicellate spikelet of maize tassel." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006317 ! gynoecium of tassel floret relationship: part_of PO:0006314 ! upper floret of pedicellate spikelet of tassel [Term] id: PO:0006405 name: androecium of upper floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "Collectively the stamens of upper floret of a pedicellate spikelet of tassel inflorescence of maize." [GR:pj] comment: This constitutes a functional androecium. is_a: PO:0006366 ! androecium of tassel floret relationship: part_of PO:0006314 ! upper floret of pedicellate spikelet of tassel [Term] id: PO:0006406 name: androecium of lower floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "Collectively the stamens of lower floret of a pedicellate spikelet of tassel inflorescence of maize." [GR:pj] comment: This constitutes a functional androecium. is_a: PO:0006366 ! androecium of tassel floret relationship: part_of PO:0006313 ! lower floret of pedicellate spikelet of tassel [Term] id: PO:0006407 name: lemma of lower floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize tassel pedicellate spikelet lower floret." [GR:pj] is_a: PO:0006356 ! lemma of tassel floret relationship: part_of PO:0006313 ! lower floret of pedicellate spikelet of tassel [Term] id: PO:0006409 name: lemma of upper floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize tassel pedicellate spikelet upper floret." [GR:pj] is_a: PO:0006356 ! lemma of tassel floret relationship: part_of PO:0006314 ! upper floret of pedicellate spikelet of tassel [Term] id: PO:0006411 name: palea of lower floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize tassel pedicellate spikelet lower floret." [GR:pj] is_a: PO:0006359 ! palea of tassel floret relationship: part_of PO:0006313 ! lower floret of pedicellate spikelet of tassel [Term] id: PO:0006413 name: palea of upper floret of pedicellate spikelet of tassel namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize tassel pedicellate spikelet upper floret." [GR:pj] is_a: PO:0006359 ! palea of tassel floret relationship: part_of PO:0006314 ! upper floret of pedicellate spikelet of tassel [Term] id: PO:0006415 name: pedicel of ear spikelet namespace: plant_anatomy def: "This is the ultimate branch of the pedicellate ear spikelet." [GR:pj] is_a: PO:0006319 ! spikelet pedicel relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006416 name: pedicel of tassel spikelet namespace: plant_anatomy def: "This is the ultimate branch of the pedicellate tassel spikelet." [GR:pj] is_a: PO:0006319 ! spikelet pedicel relationship: part_of PO:0006312 ! tassel pedicellate spikelet [Term] id: PO:0006417 name: tassel peduncle namespace: plant_anatomy def: "A peduncle of a maize tassel, below the lowest tassel node." [GR:pj] is_a: PO:0009053 ! peduncle relationship: part_of PO:0020126 ! tassel [Term] id: PO:0006418 name: ear peduncle namespace: plant_anatomy def: "A peduncle of a maize ear, below the lowest ear node." [GR:pj] synonym: "shank" RELATED [] synonym: "Zea lateral branch" RELATED [] is_a: PO:0009053 ! peduncle relationship: part_of PO:0020136 ! Zea ear [Term] id: PO:0006419 name: androecium of lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "Collectively the stamens of lower floret of a pedicellate spikelet of maize ear inflorescence." [GR:pj] comment: The development of the androecium in the ear floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006355 ! androecium of ear floret relationship: part_of PO:0006353 ! lower floret of pedicellate spikelet of ear [Term] id: PO:0006420 name: androecium of lower floret of sessile spikelet of ear namespace: plant_anatomy def: "Collectively the stamens of lower floret of a sessile spikelet of maize ear inflorescence." [GR:pj] comment: The development of the androecium in the ear floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006355 ! androecium of ear floret relationship: part_of PO:0006351 ! lower floret of sessile spikelet of ear [Term] id: PO:0006421 name: androecium of upper floret of sessile spikelet of ear namespace: plant_anatomy def: "Collectively the stamens of upper floret of a sessile spikelet of maize ear inflorescence." [GR:pj] comment: The development of the androecium in the ear floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006355 ! androecium of ear floret relationship: part_of PO:0006352 ! upper floret of sessile spikelet of ear [Term] id: PO:0006422 name: androecium of upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "Collectively the stamens of upper floret of a pedicellate spikelet of maize ear inflorescence." [GR:pj] comment: The development of the androecium in the ear floret of a normal maize plant is aborted and is present in a rudimentary state. is_a: PO:0006355 ! androecium of ear floret relationship: part_of PO:0006350 ! upper floret of pedicellate spikelet of ear [Term] id: PO:0006423 name: gynoecium of lower floret of sessile spikelet of ear namespace: plant_anatomy def: "Collectively the carpels of a lower floret of sessile spikelet of maize ear." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006365 ! gynoecium of ear floret relationship: part_of PO:0006351 ! lower floret of sessile spikelet of ear [Term] id: PO:0006424 name: gynoecium of lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "Collectively the carpels of a lower floret of pedicellate spikelet of a maize ear." [GR:pj] comment: A non-functional or rudimentary gynoecium. is_a: PO:0006365 ! gynoecium of ear floret relationship: part_of PO:0006353 ! lower floret of pedicellate spikelet of ear [Term] id: PO:0006425 name: gynoecium of upper floret of sessile spikelet of ear namespace: plant_anatomy def: "Collectively the carpels of a upper floret of sessile spikelet of maize ear." [GR:pj] comment: A functional gynoecium. is_a: PO:0006365 ! gynoecium of ear floret relationship: part_of PO:0006352 ! upper floret of sessile spikelet of ear [Term] id: PO:0006426 name: gynoecium of upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "Collectively the carpels of a upper floret of pedicellate spikelet of maize ear." [GR:pj] comment: A functional gynoecium. is_a: PO:0006365 ! gynoecium of ear floret relationship: part_of PO:0006350 ! upper floret of pedicellate spikelet of ear [Term] id: PO:0006427 name: palea of upper floret of sessile spikelet of ear namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize ear sessile spikelet upper floret." [GR:pj] is_a: PO:0006361 ! palea of ear floret relationship: part_of PO:0006352 ! upper floret of sessile spikelet of ear [Term] id: PO:0006428 name: palea of lower floret of sessile spikelet of ear namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize ear sessile spikelet lower floret." [GR:pj] is_a: PO:0006361 ! palea of ear floret relationship: part_of PO:0006351 ! lower floret of sessile spikelet of ear [Term] id: PO:0006429 name: palea of upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize ear pedicellate spikelet upper floret." [GR:pj] is_a: PO:0006361 ! palea of ear floret relationship: part_of PO:0006350 ! upper floret of pedicellate spikelet of ear [Term] id: PO:0006430 name: palea of lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The upper of the two bracts enclosing a flower in a maize ear pedicellate spikelet lower floret." [GR:pj] is_a: PO:0006361 ! palea of ear floret relationship: part_of PO:0006353 ! lower floret of pedicellate spikelet of ear [Term] id: PO:0006431 name: lemma of lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize ear pedicellate spikelet lower floret." [GR:pj] is_a: PO:0006363 ! lemma of ear floret relationship: part_of PO:0006353 ! lower floret of pedicellate spikelet of ear [Term] id: PO:0006432 name: lemma of upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize ear pedicellate spikelet upper floret." [GR:pj] is_a: PO:0006363 ! lemma of ear floret relationship: part_of PO:0006350 ! upper floret of pedicellate spikelet of ear [Term] id: PO:0006433 name: lemma of lower floret of sessile spikelet of ear namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize ear sessile spikelet lower floret." [GR:pj] is_a: PO:0006363 ! lemma of ear floret relationship: part_of PO:0006351 ! lower floret of sessile spikelet of ear [Term] id: PO:0006434 name: lemma of upper floret of sessile spikelet of ear namespace: plant_anatomy def: "The lower of the two bracts enclosing a flower in a maize ear sessile spikelet upper floret." [GR:pj] is_a: PO:0006363 ! lemma of ear floret relationship: part_of PO:0006352 ! upper floret of sessile spikelet of ear [Term] id: PO:0006435 name: rachilla of pedicellate spikelet of ear namespace: plant_anatomy def: "The axis of the ear pedicellate spikelet, above the glumes." [GR:pj] is_a: PO:0006380 ! ear spikelet rachilla relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006436 name: rachilla of sessile spikelet of ear namespace: plant_anatomy def: "The axis of the ear sessile spikelet, above the glumes." [GR:pj] is_a: PO:0006380 ! ear spikelet rachilla [Term] id: PO:0006437 name: lower glume of pedicellate spikelet of ear namespace: plant_anatomy def: "The proximal/basal of the two glumes in the ear pedicellate spikelet." [GR:pj] is_a: PO:0006369 ! lower glume of ear spikelet relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006438 name: lower glume of sessile spikelet of ear namespace: plant_anatomy def: "The proximal/basal of the two glumes in the ear sessile spikelet." [GR:pj] is_a: PO:0006369 ! lower glume of ear spikelet relationship: part_of PO:0006349 ! ear sessile spikelet [Term] id: PO:0006439 name: upper glume of pedicellate spikelet of ear namespace: plant_anatomy def: "The apical/distal of the two glumes in the pedicellate spikelet." [GR:pj] is_a: PO:0006371 ! upper glume of ear spikelet relationship: part_of PO:0006348 ! ear pedicellate spikelet [Term] id: PO:0006440 name: upper glume of sessile spikelet of ear namespace: plant_anatomy def: "The apical/distal of the two glumes in the sessile spikelet." [GR:pj] is_a: PO:0006371 ! upper glume of ear spikelet relationship: part_of PO:0006349 ! ear sessile spikelet [Term] id: PO:0006441 name: Poaceae stamen namespace: plant_anatomy def: "A microsporophyll, bearing four microsporangia in a grass floret." [GR:pj] is_a: PO:0009029 ! stamen relationship: part_of PO:0006383 ! Poaceae androecium [Term] id: PO:0006442 name: Poaceae anther namespace: plant_anatomy def: "The pollen-bearing part of a stamen of a grass floret." [GR:pj] is_a: PO:0009066 ! anther relationship: part_of PO:0006441 ! Poaceae stamen [Term] id: PO:0006443 name: Poaceae connective namespace: plant_anatomy def: "The part of the stamen of a grass floret, that connects the microsporangia/pollen sacs." [GR:pj] is_a: PO:0009068 ! connective relationship: part_of PO:0006442 ! Poaceae anther [Term] id: PO:0006444 name: Poaceae microsporangium namespace: plant_anatomy def: "Sporangium in the anther of a grass stamen producing microspores, usually many in number." [GR:pj] is_a: PO:0025277 ! pollen sac relationship: part_of PO:0006442 ! Poaceae anther [Term] id: PO:0006445 name: Poaceae anther wall namespace: plant_anatomy def: "A multicellular layer with outer epidermis and an inner endothecium of an anther of a grass stamen." [GR:pj] subset: Poaceae is_a: PO:0000002 ! anther wall relationship: part_of PO:0006444 ! Poaceae microsporangium [Term] id: PO:0006446 name: Poaceae endothecium namespace: plant_anatomy def: "The hypodermis of an anther sac of a grass stamen with distinctively thickened walls and involved in its dehiscence." [GR:pj] is_a: PO:0020002 ! anther wall endothecium relationship: part_of PO:0006445 ! Poaceae anther wall [Term] id: PO:0006447 name: Poaceae exothecium namespace: plant_anatomy def: "The epidermis of an anther sac of a grass stamen." [GR:pj] is_a: PO:0020004 ! anther wall exothecium relationship: part_of PO:0006445 ! Poaceae anther wall [Term] id: PO:0006448 name: Poaceae placentoid namespace: plant_anatomy def: "An inpushing of the anther wall of a grass stamen." [GR:pj] is_a: PO:0020005 ! placentoid relationship: part_of PO:0006445 ! Poaceae anther wall [Term] id: PO:0006449 name: Poaceae stomium namespace: plant_anatomy def: "A stomium that is part of an anther wall (sensu Poaceae)." [POC:rw] is_a: PO:0020101 ! stomium relationship: part_of PO:0006445 ! Poaceae anther wall [Term] id: PO:0006450 name: Poaceae tapetum namespace: plant_anatomy def: "Innermost part of the anther wall, involved in the nutrition of the pollen in grasses." [GR:pj] is_a: PO:0009071 ! anther wall tapetum relationship: part_of PO:0006445 ! Poaceae anther wall [Term] id: PO:0006451 name: Poaceae microsporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) microspores in a grass plant." [GR:pj] is_a: PO:0020047 ! microsporocyte relationship: part_of PO:0006444 ! Poaceae microsporangium [Term] id: PO:0006452 name: Poaceae microspore namespace: plant_anatomy def: "The smaller, in general, of the two kinds of spores produced in the life cycle of a grass plant. It gives rise to the male gametophyte." [GR:pj] is_a: PO:0020048 ! microspore relationship: develops_from PO:0006451 ! Poaceae microsporocyte [Term] id: PO:0006453 name: Poaceae theca namespace: plant_anatomy def: "A part of the anther of a grass stamen consisting of paired sporangia that dehisce down a common slit." [GR:pj] is_a: PO:0006444 ! Poaceae microsporangium is_a: PO:0009069 ! anther theca [Term] id: PO:0006454 name: Poaceae filament namespace: plant_anatomy def: "The stalk of the stamen of a grass floret." [GR:pj] is_a: PO:0009067 ! filament relationship: part_of PO:0006441 ! Poaceae stamen [Term] id: PO:0006455 name: Poaceae carpel namespace: plant_anatomy def: "A megasporophyll at the center of a grass floret enclosing the ovule." [GR:pj] is_a: PO:0009030 ! carpel relationship: part_of PO:0006384 ! Poaceae gynoecium [Term] id: PO:0006456 name: Poaceae ovary namespace: plant_anatomy def: "The basal portion of a carpel that encloses the ovule(s) in a grass floret." [GR:pj] is_a: PO:0009072 ! ovary relationship: part_of PO:0006455 ! Poaceae carpel [Term] id: PO:0006457 name: Poaceae ovule namespace: plant_anatomy def: "A stalked or sessile structure in a grass carpel within which one or more megaspores are formed and later the female gametophyte or embryo sac develops." [GR:pj] is_a: PO:0020003 ! ovule relationship: part_of PO:0006456 ! Poaceae ovary [Term] id: PO:0006458 name: Poaceae chalaza namespace: plant_anatomy def: "Region in the grass ovule where the integuments and the nucellus merge with the funiculus." [GR:pj] is_a: PO:0020026 ! chalaza relationship: part_of PO:0006457 ! Poaceae ovule [Term] id: PO:0006459 name: Poaceae outer integumet namespace: plant_anatomy def: "One of the two layers of tissue that usually covers the ovule of a grass, contiguous to the inner integument and usually involved in forming the micropyle at the apex." [GR:pj] is_a: PO:0020023 ! outer integument relationship: part_of PO:0006465 ! Poaceae integument [Term] id: PO:0006460 name: Poaceae inner integument namespace: plant_anatomy def: "The innermost of the two layers of tissue that cover the ovule of a grass, contiguous to the nucellus and usually involved in forming the micropyle at the apex." [GR:pj] is_a: PO:0020022 ! inner integument relationship: part_of PO:0006465 ! Poaceae integument [Term] id: PO:0006461 name: Poaceae micropyle namespace: plant_anatomy def: "A micropyle at the apex of a grass ovule." [GR:pj] is_a: PO:0020025 ! micropyle relationship: part_of PO:0006457 ! Poaceae ovule [Term] id: PO:0006462 name: Poaceae nucellus namespace: plant_anatomy def: "Subepidermal tissue in the ovule of a grass plant surrounding the megasporocyte." [GR:pj] is_a: PO:0020020 ! nucellus relationship: part_of PO:0006457 ! Poaceae ovule [Term] id: PO:0006463 name: Poaceae megasporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) megaspores in a grass plant." [GR:pj] is_a: PO:0000431 ! megasporocyte relationship: part_of PO:0006462 ! Poaceae nucellus [Term] id: PO:0006464 name: Poaceae megaspore namespace: plant_anatomy def: "The larger, in general, of the two kinds of spores produced after meiosis in the life cycle of a grass plant, and on germination giving rise to the female gametophyte (embryo sac)." [GR:pj] is_a: PO:0020019 ! megaspore relationship: develops_from PO:0006463 ! Poaceae megasporocyte [Term] id: PO:0006465 name: Poaceae integument namespace: plant_anatomy def: "One of the layers of tissue that covers the ovule of a grass carpel, enveloping the nucellus and forming the micropyle at the apex." [GR:pj] is_a: PO:0020021 ! integument relationship: part_of PO:0006457 ! Poaceae ovule [Term] id: PO:0006466 name: Poaceae funicle namespace: plant_anatomy def: "A stalk that attaches an ovule to a placenta in a grass carpel." [GR:pj] is_a: PO:0020006 ! funicle relationship: part_of PO:0006456 ! Poaceae ovary [Term] id: PO:0006467 name: Poaceae ovary placenta namespace: plant_anatomy def: "The region within an ovary to which ovules are attached in a grass carpel." [GR:pj] is_a: PO:0020001 ! ovary placenta relationship: part_of PO:0006456 ! Poaceae ovary [Term] id: PO:0006468 name: Poaceae stigma namespace: plant_anatomy def: "The apical part of a carpel of a grass floret on which the pollen germinates." [GR:pj] is_a: PO:0009073 ! stigma relationship: part_of PO:0006455 ! Poaceae carpel [Term] id: PO:0006469 name: Poaceae style namespace: plant_anatomy def: "An elongated part of a carpel between the ovary and the stigma of a grass floret, through which the pollen tube grows." [GR:pj] is_a: PO:0009074 ! style relationship: part_of PO:0006455 ! Poaceae carpel [Term] id: PO:0006470 name: Zea carpel namespace: plant_anatomy def: "A megasporophyll at the center of a maize floret enclosing the ovule." [GR:pj] is_a: PO:0006455 ! Poaceae carpel relationship: part_of PO:0006365 ! gynoecium of ear floret [Term] id: PO:0006471 name: Zea androecium namespace: plant_anatomy def: "Collectively the stamens of one floret of a maize plant." [GR:pj] is_a: PO:0006383 ! Poaceae androecium [Term] id: PO:0006472 name: Zea stamen namespace: plant_anatomy def: "A microsporophyll bearing four microsporangia in a maize floret." [GR:pj] is_a: PO:0006441 ! Poaceae stamen relationship: part_of PO:0006366 ! androecium of tassel floret [Term] id: PO:0006473 name: Zea anther namespace: plant_anatomy def: "The pollen-bearing part of a stamen of a maize floret." [GR:pj] is_a: PO:0006442 ! Poaceae anther relationship: part_of PO:0006472 ! Zea stamen [Term] id: PO:0006474 name: Zea filament namespace: plant_anatomy def: "The stalk of the stamen of a maize floret." [GR:pj] is_a: PO:0006454 ! Poaceae filament relationship: part_of PO:0006472 ! Zea stamen [Term] id: PO:0006475 name: Zea connective namespace: plant_anatomy def: "The part of the stamen of a maize floret, that connects the microsporangia or pollen sacs." [GR:pj] is_a: PO:0006443 ! Poaceae connective relationship: part_of PO:0006473 ! Zea anther [Term] id: PO:0006476 name: Zea microsporangium namespace: plant_anatomy def: "Sporangium in the anther of a maize stamen producing microspores, usually many in number ." [GR:pj] is_a: PO:0006444 ! Poaceae microsporangium relationship: part_of PO:0006473 ! Zea anther [Term] id: PO:0006477 name: Zea anther wall namespace: plant_anatomy def: "A multicellular layer with outer epidermis and an inner endothecium of an anther of a maize stamen." [GR:pj] is_a: PO:0006445 ! Poaceae anther wall relationship: part_of PO:0006476 ! Zea microsporangium [Term] id: PO:0006478 name: Zea theca namespace: plant_anatomy def: "A part of the anther of a maize stamen consisting of paired sporangia that dehisce down a common slit." [GR:pj] is_a: PO:0006453 ! Poaceae theca is_a: PO:0006476 ! Zea microsporangium [Term] id: PO:0006479 name: Zea microsporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) microspores in a maize plant." [GR:pj] is_a: PO:0006451 ! Poaceae microsporocyte relationship: part_of PO:0006476 ! Zea microsporangium [Term] id: PO:0006480 name: Zea microspore namespace: plant_anatomy def: "The smaller, in general, of the two kinds of spores produced in the life cycle of a maize plant. It gives rise to the male gametophyte." [GR:pj] is_a: PO:0006452 ! Poaceae microspore relationship: develops_from PO:0006479 ! Zea microsporocyte [Term] id: PO:0006481 name: Zea endothecium namespace: plant_anatomy def: "The hypodermis of an anther sac of a maize stamen with distinctively thickened walls and involved in its dehiscence." [GR:pj] is_a: PO:0006446 ! Poaceae endothecium relationship: part_of PO:0006477 ! Zea anther wall [Term] id: PO:0006482 name: Zea exothecium namespace: plant_anatomy def: "The epidermis of an anther sac of a maize stamen." [GR:pj] is_a: PO:0006447 ! Poaceae exothecium relationship: part_of PO:0006477 ! Zea anther wall [Term] id: PO:0006483 name: Zea placentoid namespace: plant_anatomy def: "An inpushing of the anther wall of a maize stamen." [GR:pj] is_a: PO:0006448 ! Poaceae placentoid relationship: part_of PO:0006477 ! Zea anther wall [Term] id: PO:0006484 name: Zea tapetum namespace: plant_anatomy def: "Innermost part of the anther wall, involved in the nutrition of the pollen in maize." [GR:pj] is_a: PO:0006450 ! Poaceae tapetum relationship: part_of PO:0006477 ! Zea anther wall [Term] id: PO:0006485 name: Zea stomium namespace: plant_anatomy def: "A stomium that is part of an anther wall (sensu Zea)." [POC:rw] subset: Maize is_a: PO:0006449 ! Poaceae stomium relationship: part_of PO:0006477 ! Zea anther wall [Term] id: PO:0006486 name: Zea ovary namespace: plant_anatomy def: "The basal portion of a carpel that encloses the ovule(s) in a maize floret." [GR:pj] is_a: PO:0006456 ! Poaceae ovary relationship: part_of PO:0006470 ! Zea carpel [Term] id: PO:0006487 name: Zea stigma namespace: plant_anatomy def: "The apical part of a carpel of a maize floret on which the pollen germinates." [GR:pj] is_a: PO:0006468 ! Poaceae stigma relationship: part_of PO:0006470 ! Zea carpel [Term] id: PO:0006488 name: silk namespace: plant_anatomy def: "The style of a maize floret." [GR:pj] synonym: "Zea style" RELATED [] is_a: PO:0006469 ! Poaceae style relationship: part_of PO:0006470 ! Zea carpel [Term] id: PO:0006489 name: Zea funicle namespace: plant_anatomy def: "A stalk that attaches an ovule to a placenta in a maize carpel." [GR:pj] is_a: PO:0006466 ! Poaceae funicle relationship: part_of PO:0006486 ! Zea ovary [Term] id: PO:0006490 name: Zea ovary placenta namespace: plant_anatomy def: "The region within an ovary to which ovules are attached in a maize carpel." [GR:pj] is_a: PO:0006467 ! Poaceae ovary placenta relationship: part_of PO:0006486 ! Zea ovary [Term] id: PO:0006491 name: Zea ovule namespace: plant_anatomy def: "A stalked or sessile structure in a maize carpel within which one or more megaspores are formed and later the female gametophyte or embryo sac develops." [GR:pj] is_a: PO:0006457 ! Poaceae ovule relationship: part_of PO:0006486 ! Zea ovary [Term] id: PO:0006492 name: Zea nucellus namespace: plant_anatomy def: "Subepidermal tissue in the ovule of a maize plant surrounding the megasporocyte." [GR:pj] is_a: PO:0006462 ! Poaceae nucellus relationship: part_of PO:0006491 ! Zea ovule [Term] id: PO:0006493 name: Zea megasporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) megaspores in a maize plant." [GR:pj] is_a: PO:0006463 ! Poaceae megasporocyte relationship: part_of PO:0006492 ! Zea nucellus [Term] id: PO:0006494 name: Zea megaspore namespace: plant_anatomy def: "The larger, in general, of the two kinds of spores produced after meiosis in the life cycle of a maize plant, and on germination giving rise to the female gametophyte (embryo sac)." [GR:pj] is_a: PO:0006464 ! Poaceae megaspore relationship: develops_from PO:0006493 ! Zea megasporocyte [Term] id: PO:0006495 name: Poaceae degenerate megaspore namespace: plant_anatomy def: "The megaspores in a grass plant that would not participate in megagametogenesis." [GR:pj] is_a: PO:0000245 ! degenerate megaspore is_a: PO:0006464 ! Poaceae megaspore [Term] id: PO:0006496 name: Poaceae functional megaspore namespace: plant_anatomy def: "The megaspore that forms the embryo sac in grasses." [GR:pj] is_a: PO:0000244 ! functional megaspore is_a: PO:0006464 ! Poaceae megaspore [Term] id: PO:0006497 name: Poaceae stigma epidermis namespace: plant_anatomy def: "The epidermal cell layer of the grass stigma." [GR:pj] is_a: PO:0006061 ! stigma epidermis relationship: part_of PO:0006468 ! Poaceae stigma [Term] id: PO:0006498 name: Poaceae style epidermis namespace: plant_anatomy def: "The epidermal cell layer of the style of a grass carpel." [GR:pj] is_a: PO:0006062 ! style epidermis relationship: part_of PO:0006469 ! Poaceae style [Term] id: PO:0006499 name: Poaceae transmitting tissue namespace: plant_anatomy def: "Tissue in the style of a grass carpel, through which the pollen tube grows; it connects the stigma and the inside of ovary." [GR:pj] is_a: PO:0020102 ! portion of transmitting tissue relationship: part_of PO:0006469 ! Poaceae style [Term] id: PO:0006500 name: Poaceae ovary epidermis namespace: plant_anatomy def: "The epidermal cell layer of the ovary of a grass carpel." [GR:pj] is_a: PO:0006063 ! ovary epidermis is_a: PO:0025096 ! carpel epidermis relationship: part_of PO:0006456 ! Poaceae ovary [Term] id: PO:0006501 name: leaf abscission zone namespace: plant_anatomy def: "Zone at base of the leaf that contains an abscission (or separation) layer and a protective layer, both involved in the abscission of the leaf." [GR:pj] is_a: PO:0000146 ! abscission zone relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0006502 name: flower abscission zone namespace: plant_anatomy def: "Zone at base of the flower that contains an abscission (or separation) layer and a protective layer, both involved in the abscission of the flower and its parts." [GR:pj] is_a: PO:0000146 ! abscission zone relationship: part_of PO:0009046 ! flower [Term] id: PO:0006503 name: fruit abscission zone namespace: plant_anatomy def: "Zone at base of the fruit that contains an abscission (or separation) layer and a protective layer, both involved in the abscission of the fruit." [GR:pj] subset: Maize subset: Poaceae subset: Rice subset: Tomato is_a: PO:0000146 ! abscission zone relationship: part_of PO:0009001 ! fruit [Term] id: PO:0006504 name: leaf trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a leaf epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "phyllid trichome" NARROW [] xref: OBO_SF_PO:3132414 is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0006016 ! leaf epidermis [Term] id: PO:0006505 name: central spike of ear namespace: plant_anatomy def: "A first order inflorescence axis that is the central axis of an ear." [POC:rw] comment: Zea cob is different from the cob inflorescence found in Sorghum. synonym: "ear rachis" RELATED [] synonym: "Zea cob" RELATED [] is_a: PO:0025104 ! first order inflorescence axis relationship: part_of PO:0020136 ! Zea ear [Term] id: PO:0006506 name: Zea chalaza namespace: plant_anatomy def: "Region in the maize ovule where the integuments and the nucellus merge with the funiculus." [GR:pj] is_a: PO:0006458 ! Poaceae chalaza relationship: part_of PO:0006491 ! Zea ovule [Term] id: PO:0006507 name: Zea integument namespace: plant_anatomy def: "One of the layers of tissue that covers the ovule of a maize carpel, enveloping the nucellus and forming the micropyle at the apex." [GR:pj] is_a: PO:0006465 ! Poaceae integument relationship: part_of PO:0006491 ! Zea ovule [Term] id: PO:0006508 name: Poaceae integument epidermis namespace: plant_anatomy def: "The epidermis of an integument in a grass ovule." [GR:pj] is_a: PO:0006043 ! integument epidermis is_a: PO:0025096 ! carpel epidermis relationship: part_of PO:0006465 ! Poaceae integument [Term] id: PO:0008001 name: fruit distal end namespace: plant_anatomy def: "The end distal from the fruit pedicel." [GR:ap, SGN:nm] subset: Angiosperm subset: Tomato synonym: "blossom end" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009001 ! fruit [Term] id: PO:0008002 name: fruit proximal end namespace: plant_anatomy def: "The stem end of the fruit." [GR:ap, SGN:nm] subset: Angiosperm subset: Tomato synonym: "fruit shoulders" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009001 ! fruit [Term] id: PO:0008003 name: fruit vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a fruit." [GR:ap, POC:rw] subset: Arabidopsis subset: Maize subset: Poaceae subset: Rice subset: Tomato is_a: PO:0000034 ! vascular system relationship: part_of PO:0009001 ! fruit [Term] id: PO:0008005 name: fruit nucellus namespace: plant_anatomy def: "A nucellus in the grass caryopsis." [GR:ap] subset: Poaceae subset: Rice xref: OBO_SF_PO:2903966 is_a: PO:0020020 ! nucellus relationship: part_of PO:0009001 ! fruit [Term] id: PO:0008006 name: nucellar epidermis namespace: plant_anatomy def: "A portion of plant tissue that is the morphologically distinct outer layer of the nucellus." [GR:ap] subset: Poaceae subset: Rice synonym: "portion of nucellar epidermis" EXACT [] is_a: PO:0025312 ! megasporangium exothecium relationship: part_of PO:0020020 ! nucellus [Term] id: PO:0008007 name: nucellar projection namespace: plant_anatomy def: "A portion of plant tissue that is the morphologically distinct portion of the nucellus overlying the vascular strands in the grass caryopsis." [GR:ap] subset: Poaceae subset: Rice synonym: "" RELATED [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0020020 ! nucellus [Term] id: PO:0008008 name: modified aleurone namespace: plant_anatomy def: "A morphologically distinct aleurone layer located adjacent to the nucellar projection." [GR:ap] subset: Poaceae subset: Rice xref: OBO_SF_PO:3192383 is_a: PO:0005360 ! aleurone layer [Term] id: PO:0008009 name: abaxial nucellar projection namespace: plant_anatomy def: "A portion of plant tissue that is the abaxial/lower portion of the nucellus overlying the vascular strands in the grass caryopsis." [GR:ap] subset: Poaceae subset: Rice is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0008007 ! nucellar projection [Term] id: PO:0008010 name: adaxial nucellar projection namespace: plant_anatomy def: "A portion of plant tissue that is the adaxial/upper portion of the nucellus overlying the vascular strands in the grass caryopsis." [GR:ap] subset: Poaceae subset: Rice is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0008007 ! nucellar projection [Term] id: PO:0008011 name: embryo vascular system namespace: plant_anatomy def: "Vascular system of embryo." [GR:cwt] is_a: PO:0000034 ! vascular system is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0008012 name: stigma vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a stigma." [POC:rw] synonym: "stigma vein" RELATED [] is_a: PO:0000034 ! vascular system relationship: part_of PO:0005019 ! carpel vascular system relationship: part_of PO:0009073 ! stigma [Term] id: PO:0008013 name: anther vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a anther." [POC:rw] is_a: PO:0000034 ! vascular system relationship: part_of PO:0005018 ! stamen vascular system relationship: part_of PO:0009066 ! anther [Term] id: PO:0008014 name: filament vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a filament." [POC:rw] synonym: "filament vein" RELATED [] is_a: PO:0000034 ! vascular system relationship: part_of PO:0005018 ! stamen vascular system relationship: part_of PO:0009067 ! filament [Term] id: PO:0008015 name: hypocotyl vascular system namespace: plant_anatomy def: "Vascular system of the hypocotyl." [GR:cwt] is_a: PO:0000034 ! vascular system is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0008011 ! embryo vascular system relationship: part_of PO:0020100 ! hypocotyl [Term] id: PO:0008016 name: vegetative shoot apical meristem namespace: plant_anatomy def: "A shoot apical meristem that gives rise to the apical growth of vegetative tissues and organs." [GR:cwt] synonym: "vegetative meristem" RELATED [] is_a: PO:0020148 ! shoot apical meristem relationship: part_of PO:0025223 ! vegetative shoot apex [Term] id: PO:0008017 name: leaf sheath pulvinus namespace: plant_anatomy def: "A more or less abrupt swelling, especially at the apex or base of a leaf sheath." [GR:cwt] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0009000 ! pulvinus relationship: part_of PO:0020104 ! leaf sheath [Term] id: PO:0008018 name: transition leaf namespace: plant_anatomy def: "A leaf that is part of an heteroblastic series, and is characterized by anatomical features that are intermediate between juvenile and adult leaves." [GR:cwt] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025034 ! leaf [Term] id: PO:0008019 name: leaf lamina base namespace: plant_anatomy def: "The region of the leaf lamina proximal to the stem and usually connected to it by means of a petiole." [GR:cwt] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020039 ! leaf lamina [Term] id: PO:0008020 name: central zone of the leaf lamina namespace: plant_anatomy def: "Region that includes the widest or majority portion of leaf lamina and that does not include leaf apex and leaf lamina base." [GR:cwt] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020039 ! leaf lamina [Term] id: PO:0008021 name: tertiary vein namespace: plant_anatomy def: "A leaf vein arising from a secondary vein." [GR:cwt] synonym: "third order leaf vein" RELATED [] is_a: PO:0020138 ! leaf vein [Term] id: PO:0008022 name: quaternary vein namespace: plant_anatomy def: "A leaf vein arising from a tertiary vein." [GR:cwt] synonym: "fourth order leaf vein" RELATED [] is_a: PO:0020138 ! leaf vein [Term] id: PO:0008023 name: higher order vein namespace: plant_anatomy def: "A leaf vein arising from a quaternary or higher vein order." [GR:cwt] synonym: "fifth and higher order leaf vein" RELATED [] is_a: PO:0020138 ! leaf vein [Term] id: PO:0008024 name: petiole proximal end namespace: plant_anatomy def: "The region of the petiole proximal to its stem attachment site." [GR:cwt] synonym: "petiole base" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020038 ! petiole [Term] id: PO:0008025 name: central zone of the petiole namespace: plant_anatomy def: "Regions of the petiole that does not include petiole distal end and petiole proximal end." [GR:cwt] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020038 ! petiole [Term] id: PO:0008026 name: petiole distal end namespace: plant_anatomy def: "The region of the petiole distal to its stem attachment site or proximal to the leaf lamina." [GR:cwt] synonym: "petiole apex" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020038 ! petiole [Term] id: PO:0008027 name: petiole adaxial epidermis namespace: plant_anatomy def: "A portion of petiole epidermis that covers the adaxial/upper surface of a petiole." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0000051 ! petiole epidermis [Term] id: PO:0008028 name: reproductive shoot apical meristem namespace: plant_anatomy def: "A shoot apical meristem that gives rise to the apical growth of reproductive tissues and organs." [GR:cwt] is_a: PO:0020148 ! shoot apical meristem relationship: part_of PO:0025222 ! reproductive shoot apex [Term] id: PO:0008029 name: petiole abaxial epidermis namespace: plant_anatomy def: "A portion of petiole epidermis that covers the abaxial/lower surface of a petiole." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0000051 ! petiole epidermis [Term] id: PO:0008030 name: trichome cell namespace: plant_anatomy def: "A plant cell that is part of a trichome." [POC:curators] comment: A branch of a unicellular trichome is a GO sub-cellular component. synonym: "non-glandular unicellular trichome" NARROW [] synonym: "non-secretory unicellular trichome" NARROW [] synonym: "simple trichome" NARROW [PMID:19939948] synonym: "unicellular trichome" NARROW [] is_a: PO:0009002 ! plant cell disjoint_from: PO:0000332 ! epidermal pavement cell relationship: develops_from PO:0004013 ! epidermal cell relationship: part_of PO:0000282 ! trichome [Term] id: PO:0008031 name: trichome branch namespace: plant_anatomy def: "The branch on a trichome." [GR:cwt] comment: This term was made obsolete because it is a sub-cellular component. New term unicellular trichome branch (GO:0090405) has been added to GO. For cell that is a branch of a multicellular trichome, see multicellular trichome branch cell (PO:0025163). is_obsolete: true consider: PO:0025163 [Term] id: PO:0008032 name: stomatal pore namespace: plant_anatomy def: "A plant anatomical space that forms an opening in an epidermis, flanked by two guard cells." [POC:curators] comment: The size of the stomatal pore is variable and controlled by movement of the guard cells in response to environmental cues. subset: TraitNet synonym: "stoma" BROAD [] synonym: "stomata" BROAD [] synonym: "stomatal aperture" RELATED [] is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0002000 ! stomatal complex [Term] id: PO:0008034 name: leaf whorl namespace: plant_anatomy def: "A cluster of leaves in crowded circles or spirals arising basally from a crown." [GR:cwt] comment: This term was made obsolete, because its definition did not match the new ontology structure as a child of collective phyllome structure. Annotations for this term are now associated with the new term collective leaf structure (PO:0025022). synonym: "rosette" RELATED [] is_obsolete: true replaced_by: PO:0025022 [Term] id: PO:0008035 name: plerome namespace: plant_anatomy def: "A meristem forming the core of the axis composed of the primary vascular tissues and associated ground tissue, such as pith and interfascicular regions." [ISBN:0471245208 "Anatomy of seed plants by K.Esau 2nd Edition"] is_a: PO:0009013 ! meristem [Term] id: PO:0008036 name: periblem namespace: plant_anatomy def: "A portion of meristem tissue that forms the cortex." [ISBN:0471245208 "Anatomy of seed plants by K. Esau 2nd edition"] is_a: PO:0009013 ! meristem [Term] id: PO:0008037 name: seedling namespace: plant_anatomy def: "A young plant derived from a newly germinated seed." [GR:cwt] comment: This term was made obsolete. Replaced by whole plant growth stage seedling growth (PO:0007131) and whole plant (PO:0000003). xref: OBO_SF_PO:2972241 is_obsolete: true replaced_by: PO:0000003 [Term] id: PO:0008038 name: adventitious root primordium namespace: plant_anatomy def: "A root primordium that will develop into an adventitious root." [POC:curators] is_a: PO:0005029 ! root primordium [Term] id: PO:0008039 name: stem base namespace: plant_anatomy def: "The basal part of stem." [GR:cwt] synonym: "gametophore stem base" EXACT [] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009047 ! stem [Term] id: PO:0008040 name: lodicule primordium namespace: plant_anatomy def: "A primordium that will develop into a lodicule." [POC:curators] is_a: PO:0025127 ! primordium [Term] id: PO:0008041 name: stem internode elongation zone namespace: plant_anatomy def: "A shoot internode elongation zone that is part of a stem internode." [POC:curators] is_a: PO:0025100 ! shoot internode elongation zone relationship: part_of PO:0020142 ! stem internode [Term] id: PO:0008042 name: stem internode differentiation zone namespace: plant_anatomy def: "A shoot internode differentiation zone that is part of a stem internode." [POC:rw "PMID:14520573"] comment: Primary, not secondary, tissue differentiation occurs in a differentiation zone. is_a: PO:0025102 ! shoot internode differentiation zone relationship: part_of PO:0020142 ! stem internode [Term] id: PO:0008043 name: floral epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that is part of the floral organs." [GR:cwt] comment: This term was made obsolete. Its former children were classified as children of either epidermis, phyllome epidermis or shoot epidermis. is_obsolete: true consider: PO:0006040 consider: PO:0006041 consider: PO:0025096 consider: PO:0025097 consider: PO:0025184 [Term] id: PO:0008044 name: floral stomatal complex namespace: plant_anatomy def: "An opening pore on the epidermis of floral organs bordered by two guard cells and serving in gas exchange." [GR:cwt] comment: This term was made obsolete and replaced by the stomatal complexes of individual floral organs, such as petal stomatal complex or sepal stomatal complex. xref: OBO_SF_PO:3132417 is_obsolete: true consider: PO:0025217 consider: PO:0025218 consider: PO:0025219 consider: PO:0025220 consider: PO:0025221 [Term] id: PO:0008045 name: floral guard cell namespace: plant_anatomy def: "One of a pair of cells flanking the stomatal pore of floral organs." [GR:cwt] comment: This term was made obsolete and replaced by guard cell (PO:0000293) which can be post-composed with individual floral organs, such as petal or sepal. is_obsolete: true consider: PO:0000293 [Term] id: PO:0008046 name: floral stomatal pore namespace: plant_anatomy def: "A stomatal pore that is part of a floral stomatal complex." [POC:curators] comment: This term was made obsolete and replaced by stomatal pore (PO:0008032), which can be post-composed with individual floral organs, such as petal or sepal. is_obsolete: true consider: PO:0008032 [Term] id: PO:0008047 name: scutellar vascular system namespace: plant_anatomy def: "A vascular system in a scutellum." [GR:cwt] synonym: "scutellum vascular system" RELATED [] is_a: PO:0000034 ! vascular system relationship: part_of PO:0008011 ! embryo vascular system relationship: part_of PO:0020110 ! scutellum [Term] id: PO:0008048 name: scutellar epithelium namespace: plant_anatomy def: "A continuous layer of cylindrical cells covering the endosperm side of the scutellum. Thought to act as a secretory and absortive organ." [GR:cwt] synonym: "portion of scutellar epithelium" EXACT [] synonym: "scutellum epithelium" EXACT [] is_a: PO:0009007 ! portion of plant tissue is_a: PO:0025233 ! portion of embryo plant tissue relationship: part_of PO:0020110 ! scutellum [Term] id: PO:0009000 name: pulvinus namespace: plant_anatomy def: "A cardinal organ part at the apex or base of a petiole, petiolule, leaf sheath, or branch that is differentiated from the remaining organ parts by its enlarged cross section." [POC:curators] comment: Often glandular. Often involved in movement of a plant structure in response to touch, gravity or light. In panicoid grasses a swollen region in the stem above the intercalary meristem. Such a definition would also include stems of Chloranthaceae, Acanthaceae, Carpels, Amaranthaceae, etc. [source: APWeb:Glossary]. xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2972236 xref: PATO:0000586 "increased size, enlarged" is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009006 ! shoot system [Term] id: PO:0009001 name: fruit namespace: plant_anatomy alt_id: PO:0020067 alt_id: PO:0020068 alt_id: PO:0020069 alt_id: PO:0020070 alt_id: PO:0020071 alt_id: PO:0020072 alt_id: PO:0020073 alt_id: PO:0020074 alt_id: PO:0020076 alt_id: PO:0020077 alt_id: PO:0020078 alt_id: PO:0020079 alt_id: PO:0020080 alt_id: PO:0020082 alt_id: PO:0020083 alt_id: PO:0020087 alt_id: PO:0020107 def: "A collective plant structure containing one or more embryos, which as a whole, develops from a gynoecium." [POC:curators] comment: A fruit may contain additional plant structures that were part of the flower that mature along with the gynoecium, such as a receptacle. A fruit may develop without fertilization in cases of parthenocarpy, apomixis, or other hormone-induced conditions. Fruits only occur in angiosperms. subset: Angiosperm subset: Arabidopsis subset: Maize subset: Poaceae subset: Rice subset: TraitNet synonym: "achene" NARROW [] synonym: "berry" NARROW [] synonym: "capsule" NARROW [] synonym: "caryopsis" NARROW [] synonym: "circumcissile capsule" NARROW [] synonym: "cypsela" NARROW [] synonym: "drupe" NARROW [] synonym: "follicle" NARROW [] synonym: "grain" NARROW [] synonym: "kernel" NARROW [] synonym: "legume" NARROW [] synonym: "loculicidal capsule" NARROW [] synonym: "lomentum" NARROW [] synonym: "nut" NARROW [] synonym: "pod" NARROW [] synonym: "pome" NARROW [] synonym: "poricidal capsule" NARROW [] synonym: "schizocarp" NARROW [] synonym: "septicidal capsule" NARROW [] synonym: "septifragal capsule" NARROW [] synonym: "silicula" NARROW [] synonym: "siliqua" NARROW [] synonym: "silique" NARROW [] xref: OBO_SF_PO:2972169 is_a: PO:0025007 ! collective plant structure relationship: develops_from PO:0009062 ! gynoecium [Term] id: PO:0009002 name: plant cell namespace: plant_anatomy def: "A cell which is a plant structure." [GO:0005623 "cell", POC:Curators] comment: Applies to cells that are living or dead at maturity (e.g., fiber cell or tracheid) and includes any external encapsulating structures (if present) such as the plasma membrane and the plant-type cell wall. Definition of cell GO:0005623: "The basic structural and functional unit of all organisms. Includes the plasma membrane and any external encapsulating structures such as the cell wall and cell envelope". GO:0009505. Definition of plant-type cell wall (GO:0009505): A more or less rigid structure lying outside the cell membrane of a cell and composed of cellulose and pectin and other organic and inorganic substances, synonym; exact: cellulose and pectin-containing cell wall. subset: reference subset: TraitNet xref: CL:0000610 xref: GO:0005623 xref: OBO_SF_PO:2932524 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0009007 ! portion of plant tissue disjoint_from: PO:0009008 ! plant organ [Term] id: PO:0009003 name: sporophyte namespace: plant_anatomy def: "A plant structure that is a product of fertilization and produces spores through meiosis." [POC:curators] comment: Replace_by whole plant in the sporophyte phase (PO:0028003). Structures that only occur in sporophyte should have participates_in relation to sporophytic phase. subset: reference xref: OBO_SF_PO:2968332 is_obsolete: true replaced_by: PO:0000003 [Term] id: PO:0009004 name: gametophyte namespace: plant_anatomy def: "A plant structure that arises through meiosis and may produce gametes by mitosis." [POC:curators] comment: Replace_by whole plant in the gametophyte phase (PO:0028002). The gametophyte arises from the product of meiosis (the spore). Structures that occur only in gametophytes should have a participates_in relation to the gametophyte phase. subset: reference xref: OBO_SF_PO:2968330 is_obsolete: true consider: PO:0000003 consider: PO:0025279 consider: PO:0025280 [Term] id: PO:0009005 name: root namespace: plant_anatomy alt_id: PO:0003006 def: "A plant axis that is part of a root system." [POC:curators] comment: Commonly thought of as one of the three basic parts of the seed plant body. A plant stucture that is usually underground and does not bear leaves and only rarely shoots, is usually more or less positively geotropic, is endogenous in origin, indeterminate in growth and often with secondary thickening. subset: Maize subset: reference subset: TraitNet synonym: "aerial root" NARROW [] is_a: PO:0025004 ! plant axis relationship: develops_from PO:0005029 ! root primordium relationship: part_of PO:0025025 ! root system [Term] id: PO:0009006 name: shoot system namespace: plant_anatomy def: "A collective plant structure that produces shoot apical meristems and the plant structures that arise from them." [POC:curators] comment: Generally the above ground portion of a plant. subset: reference subset: TraitNet synonym: "Poaceae crown" RELATED [] synonym: "shoot" RELATED [] synonym: "tree crown" NARROW [] xref: OBO_SF_PO:3011039 is_a: PO:0025007 ! collective plant structure [Term] id: PO:0009007 name: portion of plant tissue namespace: plant_anatomy def: "A plant structure that consists predominantly of similarly specialized cells of one or more types." [POC:curators, TAIR:lr] comment: A portion of plant tissue may contain one or several types of cells that are organized in a specific spatial arrangement into a structural unit (which includes a mass of callus) and may include an intercellular matrix. May include other types of isolated cells, such as idioblasts. subset: reference subset: TraitNet synonym: "plant tissue" RELATED [] xref: OBO_SF_PO:2944945 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0025001 ! cardinal organ part [Term] id: PO:0009008 name: plant organ namespace: plant_anatomy def: "A plant structure that is a functional unit, is a proper part of a plant, and includes portions of tissues of at least two different types that derive from a common developmental path." [POC:curators] comment: Examples: stem, leaf, root. May include individual cell types that are not part of tissues (e.g.: idioblasts). subset: TraitNet synonym: "compound plant organ" RELATED [] synonym: "simple plant organ" RELATED [PATO:01503] xref: OBO_SF_PO:2932521 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0009007 ! portion of plant tissue [Term] id: PO:0009009 name: plant embryo namespace: plant_anatomy def: "A whole plant in the early part of a sporophytic phase after the first cell division." [POC:curators] comment: An embryo is generally formed after the first division of a zygote, but in the case of adventitious embryos, somatic embryos, other embryos that arise through apogamy, and cultured haploid embryos, it is formed after the division of a single cell that is not a zygote. The end of the embryonic phase varies among taxa. In seed plants, the embryonic phase ends with germination. In pteridophytes, the embryonic phase ends with the formation of the first true leaf after the cotyledon(s). In bryophytes, the embryonic phase ends when the apical cell stops dividing and the sporangium begins to develop. In cultured plant embryos, the embryonic phase ends when organs (roots, shoot axes, or leaves) begin to form. synonym: "germ" RELATED [] xref: OBO_SF_PO:2982384 is_a: PO:0000003 ! whole plant [Term] id: PO:0009010 name: seed namespace: plant_anatomy def: "A propagating organ formed in the reproductive cycle of gymnosperms and angiosperms, derived from the ovule and enclosing an embryo." [APWeb:Glossary, GR:pj] comment: The seed is representative of a next generation of sporophyte. subset: Arabidopsis subset: Citrus subset: Maize subset: Poaceae subset: Rice subset: Tomato subset: TraitNet is_a: PO:0000003 ! whole plant relationship: part_of PO:0009001 ! fruit [Term] id: PO:0009011 name: plant structure namespace: plant_anatomy def: "An anatomical structure that is or was part of a plant, or was derived from a part of a plant." [CARO:0000003 "anatomical structure", POC:curators] comment: 'Part' includes both proper parts and the whole plant. CARO:0000003 anatomical structure is defined as: Material anatomical entity that has inherent 3D shape and is generated by coordinated expression of the organism's own genome. subset: TraitNet xref: OBO_SF_PO:2932527 is_a: PO:0025131 ! plant anatomical entity [Term] id: PO:0009013 name: meristem namespace: plant_anatomy def: "A portion of plant tissue in which cells have retained their embryonic characteristics, or have reverted to them secondarily, and that divide to produce new cells that can undergo differentiation to form mature tissues, i.e. they have a capacity for morphogenesis and growth." [APWeb:Glossary, GR:pj] subset: TraitNet synonym: "meristematic tissue" EXACT [] synonym: "portion of meristem tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: has_part PO:0004010 ! meristematic cell [Term] id: PO:0009014 name: dermal tissue namespace: plant_anatomy def: "A portion of plant tissue that covers the surface of the plant." [GR:pj, ISBN:0122151704] comment: This term is redundant with epidermis and will be obsoleted.\nMove annotations to epidermis. xref: OBO_SF_PO:3008008 is_obsolete: true replaced_by: PO:0005679 [Term] id: PO:0009015 name: portion of vascular tissue namespace: plant_anatomy def: "A portion of plant tissue that has parts xylem and phloem." [APWeb:Glossary] comment: Functions in conduction and support. In the stem it is often found as a stele, surrounded by the cortex and surrounding the pith. subset: TraitNet synonym: "vascular system" RELATED [] xref: BTO:0001432 "vascular tissue" is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0000034 ! vascular system [Term] id: PO:0009016 name: ground tissue namespace: plant_anatomy def: "OBSOLETE. Tissues other than the vascular tissues, epidermis and the periderm." [GR:pj] comment: Replaced by portion of ground tissue (). Uninformative definition. Check it again. is_obsolete: true replaced_by: PO:0025059 [Term] id: PO:0009017 name: inflorescence branch pulvinus namespace: plant_anatomy def: "Pulvinus of an inflorescence branch." [GR:cwt] is_a: PO:0009000 ! pulvinus relationship: part_of PO:0009081 ! inflorescence branch [Term] id: PO:0009018 name: basal endosperm transfer cell namespace: plant_anatomy def: "A transfer cell that is part of a basal endosperm transfer layer." [POC:rw] comment: Responsible for transferring nutrients to an embryo by symplastic or apoplastic methods. xref: OBO_SF_PO:3132534 is_a: PO:0000078 ! transfer cell relationship: part_of PO:0025196 ! basal endosperm transfer layer [Term] id: PO:0009019 name: obsolete basal endosperm transfer layer namespace: plant_anatomy def: "A cell layer found in basal endosperm transfer cell." [GR:cwt] comment: This term was made obsolete because the definition was wrong. Replace by new term with same name but corrected definition. is_obsolete: true replaced_by: PO:0025196 [Term] id: PO:0009020 name: meristem L1 namespace: plant_anatomy def: "The outermost layer of a shoot apical meristem that gives rise to a shoot epidermis." [GR:pj, PMID:12221985] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0009021 name: meristem L2 namespace: plant_anatomy def: "A cell layer directly beneath a meristem L1 layer in a shoot apical meristem which gives rise to subepidermal tissue." [GR:pj, PMID:12221985] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0009022 name: meristem L3 namespace: plant_anatomy def: "A multicellular layer beneath a mersistem L2 layer in a shoot apical meristem which gives rise to internal tissues of leaf and stem." [GR:pj, PMID:12221985] is_a: PO:0009013 ! meristem relationship: part_of PO:0020148 ! shoot apical meristem [Term] id: PO:0009023 name: leaf axil namespace: plant_anatomy def: "An axil that is the space between a shoot axis and a leaf that branches from the shoot axis." [POC:rw] xref: OBO_SF_PO:3007368 is_a: PO:0025224 ! axil [Term] id: PO:0009024 name: gynoecium ridge of lower floret of pedicellate spikelet of ear namespace: plant_anatomy def: "A Zea gynoecium ridge that is a gynoecium of a lower floret of a pedicellate spikelet of ear in the early stages of development." [POC:curators] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. While the development of this stylar ridge is very similar to that of the upper florets, the development does not proceed beyond the early ridge stage. synonym: "gynoecial ridge of lower floret of pedicellate spikelet of ear" EXACT [] synonym: "stylar ridge of lower floret of pedicellate spikelet of ear" EXACT [ISBN-13:978-0387947358 "Cheng and Pareddy chapter"] xref: OBO_SF_PO:2959654 is_a: PO:0006424 ! gynoecium of lower floret of pedicellate spikelet of ear is_a: PO:0025087 ! Zea gynoecium ridge [Term] id: PO:0009025 name: vascular leaf namespace: plant_anatomy def: "A leaf in a vascular plant." [POC:curators] comment: Has vascular tissue. From APweb Glossary: In angiosperms, commonly thought of as one of the three basic parts of the seed plant body, a structure usually of determinate growth, without secondary thickening, and of superficial origin, often flattened and photosynthetic in part, and in the axil of which is found a bud. Occurs in the sporophytic phase of a plant life cycle. subset: Angiosperm subset: Gymnosperms subset: Pteridophytes subset: reference subset: TraitNet synonym: "foliage leaf" EXACT [] synonym: "frond" NARROW [] synonym: "leaf, vascular" EXACT [] synonym: "needle-like leaf" NARROW [] synonym: "scale-like leaf" NARROW [] is_a: PO:0025034 ! leaf [Term] id: PO:0009026 name: sporophyll namespace: plant_anatomy def: "A leaf-like organ on which one or more sporangia are borne." [APWeb:Glossary] subset: reference subset: TraitNet is_a: PO:0006001 ! phyllome [Term] id: PO:0009027 name: megasporophyll namespace: plant_anatomy def: "A structure upon which (or in the axil of which) one or more megasporangia are borne; in flowering plants, a carpel." [APWeb:Glossary] subset: TraitNet is_a: PO:0009026 ! sporophyll [Term] id: PO:0009028 name: microsporophyll namespace: plant_anatomy def: "A structure on which one or more microsporangia are borne; in flowering plants, the stamen." [APWeb:Glossary] subset: TraitNet is_a: PO:0009026 ! sporophyll [Term] id: PO:0009029 name: stamen namespace: plant_anatomy def: "A microsporophyll bearing one or more microsporangia." [APWeb:Glossary] subset: reference subset: TraitNet is_a: PO:0009028 ! microsporophyll relationship: develops_from PO:0004705 ! stamen primordium relationship: part_of PO:0009061 ! androecium [Term] id: PO:0009030 name: carpel namespace: plant_anatomy def: "A megasporophyll, almost always at the center of a flower, its margins more or less fused together or with other carpels to enclose the ovule(s)." [APWeb:Glossary] comment: If carpels are fused, the gynoecium is a syncarpous gynoecium, as in Poaceae, Brassicaceae and Solanaceae.  If carpels are free, the gynoecium is an apocarpous gynoecium, as in Fabaceae. subset: reference subset: TraitNet is_a: PO:0009027 ! megasporophyll relationship: develops_from PO:0004703 ! carpel primordium relationship: part_of PO:0009062 ! gynoecium [Term] id: PO:0009031 name: sepal namespace: plant_anatomy def: "A member of the (usually green) outer whorl of non-fertile parts surrounding the fertile organs of a flower." [APWeb:Glossary] subset: reference subset: TraitNet is_a: PO:0006001 ! phyllome relationship: develops_from PO:0004704 ! sepal primordium relationship: part_of PO:0009060 ! calyx [Term] id: PO:0009032 name: petal namespace: plant_anatomy def: "A member of the corolla, the inner whorl of non-fertile parts surrounding the fertile organs of a flower, usually soft and colored conspicuously." [APWeb:Glossary] subset: reference subset: TraitNet is_a: PO:0006001 ! phyllome relationship: develops_from PO:0000021 ! petal primordium relationship: part_of PO:0009059 ! corolla [Term] id: PO:0009033 name: tepal namespace: plant_anatomy def: "A phyllome that is part of a perianth in which all parts are similar in appearance and are neither petals nor sepals." [POC:curators] subset: reference subset: TraitNet xref: OBO_SF_PO:2972262 is_a: PO:0006001 ! phyllome relationship: part_of PO:0025021 ! collective tepal structure [Term] id: PO:0009034 name: flower bract namespace: plant_anatomy def: "A bract subtending a flower." [POC:curators] subset: reference subset: TraitNet synonym: "chaff" RELATED [] synonym: "floral bract" EXACT [] xref: OBO_SF_PO:2972266 is_a: PO:0009055 ! bract relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0009035 name: nectary namespace: plant_anatomy def: "A multicellular glandular structure secreting a liquid containing organic substances especially sugars." [GR:pj] subset: reference subset: TraitNet is_a: PO:0005656 ! portion of secretory tissue relationship: part_of PO:0009006 ! shoot system [Term] id: PO:0009036 name: lodicule namespace: plant_anatomy def: "A phyllome that is part of a grass floret and is one of two or three tiny scales or flaps of tissue outside the stamens." [POC:curators] comment: May represent a reduced floral structure. subset: reference xref: OBO_SF_PO:3132537 is_a: PO:0006001 ! phyllome relationship: develops_from PO:0008040 ! lodicule primordium relationship: part_of PO:0006318 ! Poaceae floret [Term] id: PO:0009037 name: lemma namespace: plant_anatomy def: "In a grass floret, the lower of two bracts enclosing a flower." [APWeb:Glossary, GR:pj] subset: reference is_a: PO:0009034 ! flower bract relationship: part_of PO:0006318 ! Poaceae floret [Term] id: PO:0009038 name: palea namespace: plant_anatomy def: "In a grass floret, the upper of the two bracts enclosing a flower." [APWeb:Glossary, GR:pj] comment: Possibly a prophyll/bracteole. subset: reference is_a: PO:0009034 ! flower bract relationship: part_of PO:0006318 ! Poaceae floret [Term] id: PO:0009039 name: glume namespace: plant_anatomy alt_id: PO:0006026 def: "A \"bract\" in the inflorescence of a grass, sedge or similar plant." [APWeb:Glossary, GR:pj] subset: reference synonym: "rudimentary glume" RELATED [] is_a: PO:0009054 ! inflorescence bract relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0009040 name: sterile lemma namespace: plant_anatomy alt_id: PO:0006029 def: "A bract in the position of a lemma, but not enclosing floral organs." [UMSL:tk] comment: An undeveloped androecium or gynoecium may or may not be detectable. subset: reference synonym: "empty glume" RELATED [] is_a: PO:0009037 ! lemma [Term] id: PO:0009041 name: fertile lemma namespace: plant_anatomy def: "A lemma that encloses a functional flower, with androecium, gynoecium or both." [UMSL:tk] subset: reference is_a: PO:0009037 ! lemma [Term] id: PO:0009042 name: prophyll namespace: plant_anatomy def: "A phyllome that is the first organ or one of the first two organs formed at the base of an axillary shoot, often smaller and/or in a distinctively different position from leaves formed subsequently." [POC:curators] comment: A prophyll is not classified as a vascular leaf, because it may not have a fully developed vascular system. subset: reference xref: OBO_SF_PO:3167323 is_a: PO:0006001 ! phyllome [Term] id: PO:0009043 name: bracteole namespace: plant_anatomy def: "A small leaf or leaves borne singly or in pairs on the pedicel, the prophyll(s) of the flower-shoot (pedicel plus flower)." [APWeb:Glossary] is_a: PO:0009042 ! prophyll relationship: part_of PO:0009052 ! pedicel [Term] id: PO:0009044 name: perigynium namespace: plant_anatomy def: "Sac-like bract subtending the pistillate flower, as in Carex." [GR:pj] is_a: PO:0009042 ! prophyll [Term] id: PO:0009045 name: involucral bract namespace: plant_anatomy def: "Equals inflorescence bract of an involucre, as in Asteraceae or Compositeae." [APWeb:Glossary] subset: reference synonym: "phyllary" RELATED [] is_a: PO:0009054 ! inflorescence bract relationship: part_of PO:0009100 ! involucre [Term] id: PO:0009046 name: flower namespace: plant_anatomy alt_id: PO:0004541 def: "A determinate reproductive shoot system that has as part at least one carpel or at least one stamen and does not contain any other determinate shoot system as a part." [POC:curators] comment: The characteristic reproductive structure of angiosperms. May have as part one or more petals, sepals or tepals. May contain pistillode or staminode or other aborted organs that don't show up in mature form. subset: Angiosperm subset: reference subset: TraitNet synonym: "basal flower" NARROW [CO_125:0000019] synonym: "diclinous flower" NARROW [] synonym: "double flower" NARROW [] synonym: "female flower" NARROW [CO_125:0000050] synonym: "hermaphrodite flower" NARROW [CO_125:0000028] synonym: "imperfect flower" NARROW [] synonym: "male flower" NARROW [CGP:curators] synonym: "monoclinous flower" NARROW [] synonym: "perfect flower" NARROW [] synonym: "pistillate flower" NARROW [] synonym: "staminate flower" NARROW [] xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:3147067 is_a: PO:0025082 ! reproductive shoot system relationship: develops_from PO:0004706 ! flower primordium [Term] id: PO:0009047 name: stem namespace: plant_anatomy def: "A shoot axis that is the primary axis of a plant." [POC:curators] comment: Often bears leaves and buds. It is usually above ground, more or less negatively geotropic, and exogenous in origin. subset: reference subset: TraitNet synonym: "cane" NARROW [] synonym: "culm" EXACT [] synonym: "primary axis" EXACT [] synonym: "stalk" NARROW [] synonym: "trunk" NARROW [] xref: OBO_SF_PO:2903994 xref: OBO_SF_PO:2982923 is_a: PO:0025029 ! shoot axis [Term] id: PO:0009049 name: inflorescence namespace: plant_anatomy alt_id: PO:0009048 alt_id: PO:0009050 alt_id: PO:0020088 alt_id: PO:0020111 alt_id: PO:0020112 alt_id: PO:0020113 alt_id: PO:0020114 alt_id: PO:0020115 alt_id: PO:0020116 alt_id: PO:0020117 alt_id: PO:0020118 alt_id: PO:0020119 alt_id: PO:0020120 def: "A reproductive shoot system that has as parts all of the shoot axes distal to the most distal foliage leaf of a shoot axis and all of the flowers borne by those axes. Must have two or more flowers as parts." [POC:rw] comment: Some plants have only solitary flowers, e.g. Magnolia. subset: Angiosperm subset: reference subset: TraitNet synonym: "Asteraceae floret" NARROW [] synonym: "capitulum" NARROW [] synonym: "catkin" NARROW [] synonym: "corymb" NARROW [] synonym: "cyme" NARROW [] synonym: "dichasium" NARROW [] synonym: "drepanium" NARROW [] synonym: "helicoid cyme" NARROW [] synonym: "monochasium" NARROW [] synonym: "panicle" NARROW [] synonym: "raceme" NARROW [] synonym: "rhipidium" NARROW [] synonym: "scorpioid cyme" NARROW [] synonym: "Sorghum cob" NARROW [] synonym: "Triticeae spike" NARROW [] synonym: "umbel" NARROW [] synonym: "verticillaster" NARROW [] xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:3147080 is_a: PO:0025082 ! reproductive shoot system relationship: has_part PO:0009046 ! flower [Term] id: PO:0009051 name: spikelet namespace: plant_anatomy def: "Ultimate and congested inflorescence branch of the grasses." [APWeb:Glossary] comment: It consists of one to many closely-packed flowers and associated glumes etc. subset: Poaceae subset: reference xref: OBO_SF_PO:2971891 is_a: PO:0025082 ! reproductive shoot system relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0009052 name: pedicel namespace: plant_anatomy def: "An inflorescence branch that supports an individual flower in an inflorescence that contains more than one flower." [ISBN:0-7167-1007-2] comment: The bracteoles are borne on the pedicel, which terminates in a flower. A pedicel is the ultimate branch in an inflorescence. subset: Angiosperm subset: reference xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2975275 is_a: PO:0009081 ! inflorescence branch [Term] id: PO:0009053 name: peduncle namespace: plant_anatomy def: "A shoot axis that extends from the last foliage leaf on a stem or branch until the next distal node." [ISBN:9781842464229, POC:curators] comment: In plants with single flowers, the peduncle ends with a flower. In plants with inflorescences, the peduncle is the basal end of the primary\ninflorescence axis, and it ends where the inflorescence begins to branch.\nThe peduncle marks the axial transition from vegetative to reproductive\ngrowth. In branching inflorescences, the second order inflorescence axis from the point at which it leaves the main axis up to the point at which it branches again may be called the second order peduncle. Higher order peduncles are also possible. subset: Angiosperm subset: Musa subset: reference synonym: "inflorescence stem " RELATED [] xref: OBO_SF_PO:2972231 is_a: PO:0025029 ! shoot axis relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0009054 name: inflorescence bract namespace: plant_anatomy def: "A bract subtending a branch of the inflorescence or borne on the inflorescence axis below any branches or flowers." [APWeb:Glossary] subset: reference subset: TraitNet xref: OBO_SF_PO:2972266 is_a: PO:0009055 ! bract relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0009055 name: bract namespace: plant_anatomy def: "A phyllome that subtends a reproductive structure." [POC:curators] comment: Usually different from leaves. Often used to refer to a floral bract, but includes other kinds of bracts. subset: reference subset: TraitNet synonym: "hypsophyll" RELATED [] is_a: PO:0006001 ! phyllome [Term] id: PO:0009056 name: flower nectary namespace: plant_anatomy def: "A multicellular glandular structure found in the flower secreting a liquid containing organic substances especially sugars." [ISBN:047124529] subset: reference synonym: "floral nectary" EXACT [] is_a: PO:0009035 ! nectary relationship: part_of PO:0009046 ! flower [Term] id: PO:0009057 name: extrafloral nectary namespace: plant_anatomy def: "A multicellular glandular structure found in places other than flower secreting a liquid containing organic substances especially sugar." [ISBN:047124529] subset: TraitNet is_a: PO:0009035 ! nectary [Term] id: PO:0009058 name: perianth namespace: plant_anatomy def: "A collective phyllome structure composed of two or more petals, sepals, or tepals." [POC:curators] subset: reference subset: TraitNet xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure disjoint_from: PO:0030031 ! gametophyte perianth relationship: part_of PO:0009046 ! flower [Term] id: PO:0009059 name: corolla namespace: plant_anatomy def: "A collective phyllome structure composed of two or more petals." [POC:curators] subset: reference subset: TraitNet xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure relationship: part_of PO:0009058 ! perianth [Term] id: PO:0009060 name: calyx namespace: plant_anatomy def: "A collective phyllome structure composed of two or more sepals." [POC:curators] subset: reference subset: TraitNet xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure relationship: part_of PO:0009058 ! perianth [Term] id: PO:0009061 name: androecium namespace: plant_anatomy def: "A collective phyllome structure composed of two or more stamens." [POC:curators] comment: In some cases the androecium may consist of only one stamen. subset: Maize subset: Poaceae subset: reference subset: TraitNet xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure relationship: part_of PO:0009046 ! flower [Term] id: PO:0009062 name: gynoecium namespace: plant_anatomy def: "A collective phyllome structure composed of two or more carpels." [POC:curators] comment: In some cases the gynoecium may consist of only one carpel. subset: reference subset: TraitNet synonym: "pistil" RELATED [] xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure relationship: develops_from PO:0000019 ! gynoecium primordium relationship: part_of PO:0009046 ! flower [Term] id: PO:0009063 name: epicalyx namespace: plant_anatomy def: "A collective phyllome structure composed of two or more phyllomes immediately outside the calyx." [POC:curators] subset: reference xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure relationship: part_of PO:0009046 ! flower [Term] id: PO:0009064 name: receptacle namespace: plant_anatomy def: "A cardinal organ part that is the region at the distal end of either a peduncle or a pedicel where the floral appendages (e.g.: sepals, petals, stamens and pistils) are attached." [web:http\://www.bbg.org/gar2/topics/botany/parts_flowers.html] subset: reference xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2975273 is_a: PO:0009049 ! inflorescence is_a: PO:0025001 ! cardinal organ part [Term] id: PO:0009065 name: hypanthium namespace: plant_anatomy def: "A cup- or tube-shaped cardinal organ part, bearing perianth and stamens on its rim, so these arise above the base, and often above the top, of the ovary." [ISBN:0521251346] comment: Only bears stamens or perianth segments if they are present in the flower (e.g., no stamens in a carpellate flower). subset: reference xref: OBO_SF_PO:2972200 xref: PATO:0001873 "tube-shaped (synonym of cylindrical)" xref: PATO:0002227 "cup-shaped" is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009064 ! receptacle [Term] id: PO:0009066 name: anther namespace: plant_anatomy def: "A cardinal organ part that is the pollen-bearing part of a stamen." [APWeb:Glossary] subset: reference subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025007 ! collective plant structure relationship: develops_from PO:0006089 ! anther primordium relationship: has_part PO:0025277 ! pollen sac relationship: part_of PO:0009029 ! stamen [Term] id: PO:0009067 name: filament namespace: plant_anatomy def: "A stalk of a stamen." [GR:pj, MaizeGDB:lv] subset: reference subset: TraitNet is_a: PO:0025066 ! stalk relationship: part_of PO:0009029 ! stamen [Term] id: PO:0009068 name: connective namespace: plant_anatomy def: "The part of the stamen that connects the microsporangia/pollen sacs." [APWeb:Glossary] subset: reference xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009066 ! anther [Term] id: PO:0009069 name: anther theca namespace: plant_anatomy def: "A collective organ part structure that is part of an anther and consists of paired sporangia that dehisce down a common slit." [APWeb:Glossary] subset: Angiosperm subset: reference is_a: PO:0025007 ! collective plant structure relationship: has_part PO:0025277 ! pollen sac relationship: part_of PO:0009066 ! anther [Term] id: PO:0009070 name: obsolete pollen sac namespace: plant_anatomy def: "A microsporangium in an angiosperm that is a cavity in an anther that contains pollen grains." [ISBN:0716710072] comment: This term was made obsolete because the definition was incorrect. Replaced by PO:0025277. subset: Angiosperm subset: reference subset: TraitNet synonym: "anther lobe" RELATED [] xref: OBO_SF_PO:3132610 xref: OBO_SF_PO:3195056 is_obsolete: true replaced_by: PO:0025277 [Term] id: PO:0009071 name: anther wall tapetum namespace: plant_anatomy def: "A microsporangium tapetum that is part of an anther wall." [ISBN:0471244554, ISBN:9780003686647] comment: Develops from a primary or secondary parietal cell layer. Innermost part of the anther wall, involved in the nutrition of the pollen. subset: Angiosperm subset: reference synonym: "pollen sac tapetum" EXACT [] synonym: "portion of anther wall tapetal tissue" EXACT [] xref: OBO_SF_PO:3298006 is_a: PO:0025314 ! microsporangium tapetum relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0009072 name: ovary namespace: plant_anatomy def: "A plant structure that is the basal portion of a carpel or group of fused carpels and encloses the ovule(s)." [APWeb:Glossary, TAIR:lr] subset: Angiosperm subset: Maize subset: reference subset: TraitNet xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:3177370 is_a: PO:0009011 ! plant structure relationship: part_of PO:0009062 ! gynoecium [Term] id: PO:0009073 name: stigma namespace: plant_anatomy def: "Part of a carpel or group of fused carpels on which the pollen germinates, usually apical." [APWeb:Glossary, TAIR:lr] subset: reference subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009030 ! carpel [Term] id: PO:0009074 name: style namespace: plant_anatomy def: "An elongated part of a carpel or group of fused carpels between the ovary and the stigma, and through which the pollen tube grows." [APWeb:Glossary, TAIR:lr] subset: reference subset: TraitNet synonym: "silk" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009030 ! carpel [Term] id: PO:0009075 name: plant ontology namespace: plant_anatomy def: "OBSOLETE. A controlled vocabulary to describe the various plant parts and the growth and developmental stages." [Poc:curators] is_obsolete: true [Term] id: PO:0009076 name: gynoecium ridge of lower floret of sessile spikelet of ear namespace: plant_anatomy def: "A Zea gynoecium ridge that is a gynoecium of a lower floret of sessile spikelet of ear in the early stages of development." [POC:curators] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. Continued overgrowth of the shoot apex (which becomes the ovule primordium) by the ring of gynoecial tissue leads to the formation of the stylar canal, which is detected as a slight protuberance on the mature ovary. synonym: "gynoecial ridge of lower floret of sessile spikelet of ear" EXACT [] synonym: "stylar ridge of lower floret of sessile spikelet of ear" EXACT [ISBN-13:978-0387947358 "Cheng and Pareddy chapter"] xref: OBO_SF_PO:2959654 is_a: PO:0006423 ! gynoecium of lower floret of sessile spikelet of ear is_a: PO:0025087 ! Zea gynoecium ridge [Term] id: PO:0009077 name: staminode namespace: plant_anatomy def: "Sterile stamen." [APWeb:Glossary, GR:pj] is_a: PO:0009028 ! microsporophyll relationship: part_of PO:0009061 ! androecium [Term] id: PO:0009078 name: pistillode namespace: plant_anatomy def: "A sterile pistil, often rudimentary." [APWeb:Glossary] subset: reference is_a: PO:0009062 ! gynoecium [Term] id: PO:0009079 name: gynoecium ridge of upper floret of pedicellate spikelet of ear namespace: plant_anatomy def: "A Zea gynoecium ridge that is a gynoecium of an upper floret of pedicellate spikelet of ear in the early stages of development." [POC:curators] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. synonym: "gynoecial ridge of upper floret of pedicellate spikelet of ear" EXACT [] synonym: "stylar ridge of upper floret of pedicellate spikelet of ear" EXACT [ISBN-13:978-0387947358 "Cheng and Pareddy chapter"] xref: OBO_SF_PO:2959654 is_a: PO:0006426 ! gynoecium of upper floret of pedicellate spikelet of ear is_a: PO:0025087 ! Zea gynoecium ridge [Term] id: PO:0009080 name: spikelet rachilla namespace: plant_anatomy def: "The axis of the spikelet, above the glumes." [Poc:curators] is_a: PO:0009081 ! inflorescence branch relationship: part_of PO:0009051 ! spikelet [Term] id: PO:0009081 name: inflorescence branch namespace: plant_anatomy def: "An inflorescence axis that is a branch forming from a primary or higher order inflorescence axis." [Poc:curators] subset: Angiosperm synonym: "coflorescence" RELATED [] xref: OBO_SF_PO:3150504 is_a: PO:0020122 ! inflorescence axis [Term] id: PO:0009082 name: floret namespace: plant_anatomy def: "Small flowers, especially of the spikelets of Poaceae and Cyperaceae." [APWeb:Glossary] subset: reference is_a: PO:0009046 ! flower [Term] id: PO:0009083 name: reproductive structures namespace: plant_anatomy def: "OBSOLETE. Aggregation of gamete producing structures." [Poc:curators] is_obsolete: true [Term] id: PO:0009084 name: pericarp namespace: plant_anatomy def: "A wall of a fruit, developed from the ovary or carpel wall." [APWeb:Glossary, GR:pj, TAIR:lr] subset: Arabidopsis subset: Citrus subset: Maize subset: Poaceae subset: Rice subset: Tomato synonym: "fruit peel" RELATED [] synonym: "fruit rind" RELATED [] synonym: "portion of pericarp tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009001 ! fruit [Term] id: PO:0009085 name: exocarp namespace: plant_anatomy alt_id: PO:0006046 alt_id: PO:0006217 def: "A portion of plant tissue that is the outer layer of a pericarp." [GR:pj] subset: Citrus subset: Tomato synonym: "ectocarp" EXACT [] synonym: "epicarp" EXACT [] synonym: "flavedo" EXACT [] synonym: "outer epidermis of pericarp" RELATED [] synonym: "pericarp epidermis" RELATED [] synonym: "portion of exocarp tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009084 ! pericarp [Term] id: PO:0009086 name: endocarp namespace: plant_anatomy alt_id: PO:0006047 def: "A portion of plant tissue that is the innermost differentiated layer of a pericarp." [GR:pj] subset: Arabidopsis subset: Citrus subset: Maize subset: Poaceae subset: Rice subset: Tomato synonym: "citrus flesh" RELATED [] synonym: "citrus pulp" RELATED [] synonym: "inner epidermis of pericarp" RELATED [] synonym: "portion of endocarp tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009084 ! pericarp [Term] id: PO:0009087 name: mesocarp namespace: plant_anatomy def: "A portion of plant tissue that is the middle layer of a pericarp." [GR:pj] subset: Citrus subset: Tomato synonym: "albedo" RELATED [] synonym: "portion of mesocarp tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009084 ! pericarp [Term] id: PO:0009088 name: seed coat namespace: plant_anatomy def: "A portion of plant tissue that is the covering of a seed derived from ovular - mainly integumentary - tissue." [APWeb:Glossary, GR:pj, TAIR:lr] comment: Used only when not specified more precisely; see testa, tegmen. subset: TraitNet synonym: "portion of seed coat tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009010 ! seed [Term] id: PO:0009089 name: endosperm namespace: plant_anatomy def: "A maximal portion of nutritive plant tissue in a seed." [APWeb:Glossary, GR:pj] comment: In angiosperms endosperm is usually triploid and formed after fertilization by the fusion of one gamete with the polar nucleus; sometimes diploid or polyploid. subset: TraitNet synonym: "" RELATED [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009010 ! seed [Term] id: PO:0009090 name: aril namespace: plant_anatomy def: "A cardinal organ part that is a fleshy outgrowth of the funicle, covering all or most of the seed." [ISBN-13:9780881928501] comment: A fleshy outgrowth from another part of a seed is an arilloid. If the ovule is pressed against the funicle to form a raphe, it may appear that the aril is growing from the raphe. subset: reference subset: TraitNet xref: OBO_SF_PO:3132538 is_a: PO:0025001 ! cardinal organ part relationship: develops_from PO:0020006 ! funicle relationship: part_of PO:0009010 ! seed [Term] id: PO:0009091 name: mature dispersal unit namespace: plant_anatomy def: "OBSOLETE. provisional term" [Poc:curators] is_obsolete: true [Term] id: PO:0009092 name: gynoecium ridge of upper floret of sessile spikelet of ear namespace: plant_anatomy def: "A Zea gynoecium ridge that is a gynoecium of an upper floret of sessile spikelet of ear in the early stages of development." [POC:curators] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. synonym: "gynoecial ridge of upper floret of sessile spikelet of ear" EXACT [] synonym: "stylar ridge of upper floret of sessile spikelet of ear" EXACT [ISBN-13:978-0387947358 "Cheng and Pareddy Chapter"] xref: OBO_SF_PO:2959654 is_a: PO:0006425 ! gynoecium of upper floret of sessile spikelet of ear is_a: PO:0025087 ! Zea gynoecium ridge [Term] id: PO:0009100 name: involucre namespace: plant_anatomy def: "A collective phyllome structure composed of two or more involucral bracts at the base of a cluster of flowers, as found in Asteraceae or Compositae." [POC:curators] comment: The burs or bristles in Cenchrus and Pennisetum are not involucres because the fused structures are branches and not bracts. xref: OBO_SF_PO:2971891 xref: OBO_SF_PO:2997165 is_a: PO:0025023 ! collective phyllome structure relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0009101 name: long lateral tassel branch namespace: plant_anatomy def: "The long branch that  arise from the central spike of tassel in maize." [GR:pj, MaizeGDB:lv] subset: Maize synonym: "second order tassel branch" RELATED [] is_a: PO:0006323 ! tassel branch relationship: develops_from PO:0009104 ! long lateral tassel branch meristem [Term] id: PO:0009102 name: short tassel branch namespace: plant_anatomy def: "The very short branch that may arise from either or both the long lateral branch and the central spike of tassel in maize." [GR:pj, MaizeGDB:lv] subset: Maize synonym: "third order tassel branch" RELATED [] is_a: PO:0006323 ! tassel branch relationship: develops_from PO:0009103 ! short tassel branch meristem [Term] id: PO:0009103 name: short tassel branch meristem namespace: plant_anatomy def: "The meristem present on either or both the long lateral branch and central spike of a maize tassel that gives rise to short tassel branch." [GR:pj, MaizeGDB:lv] subset: Maize synonym: "short branch meristem" RELATED [] synonym: "third order tassel branch meristem" RELATED [] is_a: PO:0009107 ! tassel lateral meristem relationship: part_of PO:0006324 ! central spike of tassel relationship: part_of PO:0009101 ! long lateral tassel branch [Term] id: PO:0009104 name: long lateral tassel branch meristem namespace: plant_anatomy def: "The meristem that gives rise to the long lateral branch in the maize tassel." [MaizeGDB:lv] subset: Maize synonym: "long lateral branch meristem" RELATED [] synonym: "second order tassel branch meristem" RELATED [] is_a: PO:0009107 ! tassel lateral meristem relationship: part_of PO:0006324 ! central spike of tassel [Term] id: PO:0009105 name: inflorescence lateral meristem namespace: plant_anatomy def: "The meristem which gives rise to the lateral structures of the inflorescence and contributes to their apical growth." [GR:pj, MaizeGDB:lv] is_a: PO:0000230 ! inflorescence meristem is_a: PO:0006344 ! shoot lateral meristem [Term] id: PO:0009106 name: tassel meristem namespace: plant_anatomy def: "Meristem that gives rise to the apical and lateral structures of the tassel inflorescence in maize." [GR:pj] subset: Maize is_a: PO:0000230 ! inflorescence meristem relationship: part_of PO:0020126 ! tassel [Term] id: PO:0009107 name: tassel lateral meristem namespace: plant_anatomy def: "The meristem that gives rise to the long lateral branch, short branch and spikelets in maize tassel." [MaizeGDB:lv] subset: Maize is_a: PO:0009105 ! inflorescence lateral meristem is_a: PO:0009106 ! tassel meristem [Term] id: PO:0009108 name: inflorescence apical meristem namespace: plant_anatomy def: "A reproductive shoot apical meristem that gives rise to the apical growth of the inflorescence. It develops from the shoot apical meristem (SAM) after it undergoes transition from vegetative to reproductive phase." [GR:pj, MaizeGDB:lv] is_a: PO:0000230 ! inflorescence meristem is_a: PO:0008028 ! reproductive shoot apical meristem relationship: develops_from PO:0008016 ! vegetative shoot apical meristem [Term] id: PO:0009109 name: ear meristem namespace: plant_anatomy def: "The meristem which gives rise to the female inflorescence or ear in maize." [MaizeGDB:lv] subset: Maize is_a: PO:0000230 ! inflorescence meristem relationship: part_of PO:0020136 ! Zea ear [Term] id: PO:0009110 name: ear lateral meristem namespace: plant_anatomy def: "The meristem that gives rise to the lateral structures of a maize ear." [GR:pj] subset: Maize is_a: PO:0009105 ! inflorescence lateral meristem is_a: PO:0009109 ! ear meristem [Term] id: PO:0009111 name: petiole pulvinus namespace: plant_anatomy def: "Pulvinus of the petiole." [GR:cwt] is_a: PO:0009000 ! pulvinus relationship: part_of PO:0020038 ! petiole [Term] id: PO:0019018 name: embryo axis namespace: plant_anatomy def: "A plant axis that is the axial part of a plant embryo." [ISBN:0471245208, POC:rw] comment: Has as parts a hypocotyl, a root meristem and a radicle, if any of these are present. synonym: "hypocotyl-root axis" EXACT [] synonym: "zygotic plant embryo axis" NARROW [] is_a: PO:0025004 ! plant axis is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0019022 name: arilloid namespace: plant_anatomy def: "A cardinal organ part that is a fleshy outgrowth of a seed and does not cover the entire seed and develops from a part of the seed other than a funicle." [ISBN-13:9780881928501] subset: TraitNet synonym: "caruncle" NARROW [ISBN-13:978-0-88192-850-1 "an arilloid near the micropyle"] synonym: "strophiole" NARROW [ISBN-13:9780881928501 "an arilloid on the raphe"] xref: OBO_SF_PO:3132539 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009010 ! seed [Term] id: PO:0019023 name: strophiole namespace: plant_anatomy def: "An outgrowth occurring on the raphe." [ISBN:0080280293] subset: reference is_a: PO:0019022 ! arilloid relationship: part_of PO:0020027 ! raphe [Term] id: PO:0019024 name: seed operculum namespace: plant_anatomy def: "A plug-like structure formed in the micropylar region of the seed coat." [ISBN:0080280293] synonym: "portion of seed operculum tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009010 ! seed [Term] id: PO:0019026 name: tracheid bar namespace: plant_anatomy def: "A distinct ring-like structure, composed of tracheid cells, which surrounds the hilum of some taxa e.g., Phaseolus, and forms a groove in the surface of the pericarp (immediately adjacent to the hilum)." [ISBN:0080280293] is_a: PO:0009015 ! portion of vascular tissue relationship: part_of PO:0009010 ! seed [Term] id: PO:0020001 name: ovary placenta namespace: plant_anatomy def: "A portion of placenta tissue that is part of an ovary and to which ovules are attached." [APWeb:Glossary] subset: reference is_a: PO:0025078 ! placenta relationship: part_of PO:0009072 ! ovary [Term] id: PO:0020002 name: anther wall endothecium namespace: plant_anatomy def: "An microsporangium endothecium that part of an anther wall." [ISBN:9780003686647] comment: May have secondary thickening of walls of cells that are involved in anther dehiscence. There can be more than one layer in an anther endothecium. subset: Angiosperm subset: reference synonym: "anther sac hypodermis" RELATED [] synonym: "pollen sac endothecium" EXACT [] xref: OBO_SF_PO:3298006 is_a: PO:0025309 ! microsporangium endothecium relationship: adjacent_to PO:0020004 ! anther wall exothecium relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0020003 name: ovule namespace: plant_anatomy def: "A stalked or sessile structure in a seed plant within which one or more megaspores are formed and later the female gametophyte or embryo sac develops." [APWeb:Glossary] subset: reference subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: develops_from PO:0000018 ! ovule primordium relationship: part_of PO:0009072 ! ovary [Term] id: PO:0020004 name: anther wall exothecium namespace: plant_anatomy alt_id: PO:0006059 def: "An microsporangium exothecium that is part of an anther wall." [ISBN:0471244554, ISBN:9780003686647] comment: Often with thickened cell walls. Involved in anther dehiscence. subset: Angiosperm subset: reference synonym: "anther epidermis" EXACT [] synonym: "anther sac epidermis" EXACT [] synonym: "pollen sac exothecium" EXACT [] xref: OBO_SF_PO:3297999 is_a: PO:0025097 ! stamen epidermis is_a: PO:0025311 ! microsporangium exothecium relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0020005 name: placentoid namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a connective and projects into a pollen sac." [ISBN:9780470752685] subset: reference xref: OBO_SF_PO:3132542 is_a: PO:0005421 ! parenchyma relationship: part_of PO:0009068 ! connective [Term] id: PO:0020006 name: funicle namespace: plant_anatomy def: "A stalk that attaches an ovule to a placenta." [APWeb:Glossary, GR:pj] subset: reference synonym: "funiculus" RELATED [] is_a: PO:0025066 ! stalk relationship: part_of PO:0009072 ! ovary [Term] id: PO:0020008 name: exine namespace: plant_anatomy def: "OBSOLETE: The outer layer of the pollen grain wall, highly resistant to strong acids and bases, and composed primarily of sporopollenin." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043668. subset: reference is_obsolete: true [Term] id: PO:0020009 name: ectexine namespace: plant_anatomy def: "OBSOLETE: The outer part of the exine, which stains positively with basic fuchsin in optical microscopy and has higher electron density in conventionally prepared TEM sections." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043669. subset: reference is_obsolete: true [Term] id: PO:0020010 name: endexine namespace: plant_anatomy def: "OBSOLETE: The inner part of the exine, which stains." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043671. subset: reference is_obsolete: true [Term] id: PO:0020011 name: nexine namespace: plant_anatomy def: "OBSOLETE: The inner, non-sculptured part of the exine which lies below the sexine." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043672. subset: reference is_obsolete: true [Term] id: PO:0020012 name: sexine namespace: plant_anatomy def: "OBSOLETE: The outer, sculptured layer of the exine, which lies above the nexine." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043673. subset: reference is_obsolete: true [Term] id: PO:0020013 name: tectum namespace: plant_anatomy def: "OBSOLETE: The layer of sexine, which forms a roof over the columellae, granules or other infratectal elements." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043676, subset: reference synonym: "sexine 2" RELATED [] is_obsolete: true [Term] id: PO:0020014 name: columella namespace: plant_anatomy def: "OBSOLETE: A rod-like element of the sexine/ectexine, either supporting the tectum or a caput." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043674. subset: reference synonym: "sexine 1" RELATED [] is_obsolete: true [Term] id: PO:0020015 name: sculpture elements namespace: plant_anatomy def: "OBSOLETE: Third layer of sexine." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043675. subset: reference synonym: "sexine 3" RELATED [] is_obsolete: true [Term] id: PO:0020016 name: foot layer namespace: plant_anatomy def: "OBSOLETE: The inner layer of the ectexine." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043670. synonym: "nexine 1" RELATED [] is_obsolete: true [Term] id: PO:0020017 name: intine namespace: plant_anatomy def: "OBSOLETE: The innermost of the major layers of the pollen grain wall, underlies the exine and borders the cytoplasm, not acetolysis resistant and is therefore absent in conventionally prepared palynological material." [APWeb:Glossary] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043678. subset: reference is_obsolete: true [Term] id: PO:0020018 name: germination pore namespace: plant_anatomy def: "OBSOLETE: Area through which the pollen imports the nutrition during its development, at the time of pollen germination, the pollen tube emerges through it." [GR:pj] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043677. subset: reference synonym: "pollen pore" RELATED [] is_obsolete: true [Term] id: PO:0020019 name: megaspore namespace: plant_anatomy def: "The larger, in general, of the two kinds of spores produced after meiosis in the life cycle of a heterosporous plant, and on germination giving rise to the female gametophyte (embryo sac)." [APWeb:Glossary] xref: CL:0000250 is_a: PO:0025017 ! spore [Term] id: PO:0020020 name: nucellus namespace: plant_anatomy def: "A megasporangium in a seed plant, composed of fleshy subepidermal tissue that is located in an ovule and surrounding a megasporocyte." [POC:curators] comment: In seed plants, the megaspores and megagametophyte are retained within the nucellus. subset: reference subset: TraitNet synonym: "megasporangium" RELATED [] xref: OBO_SF_PO:2903966 xref: OBO_SF_PO:3132605 is_a: PO:0025201 ! megasporangium relationship: part_of PO:0020003 ! ovule [Term] id: PO:0020021 name: integument namespace: plant_anatomy def: "One of the layers of tissue that usually covers an ovule, enveloping a nucellus and forming the micropyle at the apex." [APWeb:Glossary] subset: reference subset: TraitNet synonym: "portion of integument tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0020003 ! ovule [Term] id: PO:0020022 name: inner integument namespace: plant_anatomy def: "The innermost of the two layers of tissue that usually cover the ovule, contiguous to the nucellus and usually contributing to the formation of the micropyle at the apex." [APWeb:Glossary] is_a: PO:0020021 ! integument [Term] id: PO:0020023 name: outer integument namespace: plant_anatomy def: "One of the two layers of tissue that usually cover the ovule, contiguous to the inner integument and usually involved in forming the micropyle at the apex." [APWeb:Glossary] is_a: PO:0020021 ! integument [Term] id: PO:0020024 name: endothelium namespace: plant_anatomy def: "A portion of plant tissue composed of cells of the inner epidermis of the inner (or only) integument of the ovule that are radially elongated and metabolically very active." [APWeb:Glossary] synonym: "portion of endothelium" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0020022 ! inner integument [Term] id: PO:0020025 name: micropyle namespace: plant_anatomy def: "A plant anatomical space that is enclosed by and forms an opening in an integument at the apex of an ovule." [POC:curaotrs] comment: The micropyle originates as an opening in the integuments of an ovule through which the pollen tube usually enters the embryo sac. In a mature seed the micropyle may remain visible as an occluded pore or may be obliterated. subset: reference subset: TraitNet synonym: "ovular micropyle" EXACT [] is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0020021 ! integument [Term] id: PO:0020026 name: chalaza namespace: plant_anatomy def: "Region in the ovule where the integuments and the nucellus join with the funiculus." [ISBN:047124529] comment: The chalaza is recognized as the region which initiates the two integuments at its flank. subset: reference synonym: "ovular chlaza" EXACT [] synonym: "portion of chalaza tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0020003 ! ovule [Term] id: PO:0020027 name: raphe namespace: plant_anatomy def: "A cardinal organ part that is a ridge on an ovule where a funicle is or was fused to the ovule." [ISBN:047124529, POC:curators] subset: reference xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2972097 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020003 ! ovule [Term] id: PO:0020028 name: antiraphe namespace: plant_anatomy def: "A cardinal organ part that is the part of an ovule on the opposite side from a raphe." [POC:curators] subset: Angiosperm subset: reference xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2972168 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020003 ! ovule [Term] id: PO:0020029 name: obturator namespace: plant_anatomy def: "An outgrowth of the funicle, that forms a bridge between the micropyle and other tissues." [APWeb:Glossary] comment: Most commonly arising from the funicle, also developing from placenta, integument, etc. subset: reference synonym: "portion of obturator tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0020006 ! funicle [Term] id: PO:0020030 name: cotyledon namespace: plant_anatomy def: "A leaf formed at the first node of a sporophyte." [APWeb:Glossary, GR:pj] subset: reference subset: TraitNet is_a: PO:0009025 ! vascular leaf relationship: develops_from PO:0000015 ! cotyledon primordium [Term] id: PO:0020031 name: radicle namespace: plant_anatomy def: "An embryonic root that is the basal continuation of a hypocotyl." [ISBN:0471245208] comment: Found in an embryo or a seedling. May develop into the root system of an adult plant. Sometimes abortive. subset: reference xref: OBO_SF_PO:3293781 is_a: PO:0000045 ! embryo root [Term] id: PO:0020032 name: plumule namespace: plant_anatomy def: "A somewhat differentiated terminal bud above the cotyledonary node, in which one or more internodes and leaves or scales can be discerned in a primordial stage." [APWeb:Glossary] comment: Occurs in several embryo types. synonym: "embryonic shoot" RELATED [] is_a: PO:0004713 ! terminal bud is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0020033 name: coleoptile namespace: plant_anatomy def: "A phyllome that surrounds the plumule of an embryo or the emerging shoot apex of a seedling." [ISBN:0471244554, ISBN:9781842464229] comment: Found in Poaceae. The coleoptile is the first phyllome formed from the embryonic shoot apical meristem. Protects the emerging shoot system as it grows through the soil. xref: OBO_SF_PO:3192359 is_a: PO:0006001 ! phyllome [Term] id: PO:0020034 name: coleorhiza namespace: plant_anatomy def: "A plant organ that surrounds a radicle." [ISBN:0471244554, ISSN:0006-8101 "Robertse et al. 2001, Botanical Review 77(1):1=10"] comment: Found in Poaceae and some other monocots as well as some gymnosperms. Protects the emerging radicle in a plant embryo or seedling. The parenchyma cells of both the coleorhiza and epiblast may function in storage. xref: OBO_SF_PO:3293771 is_a: PO:0009008 ! plant organ [Term] id: PO:0020035 name: epicotyl namespace: plant_anatomy def: "The first stem internode above a hypocotyl." [ISBN:0471244554] comment: The epicotyl is the first internode of a stem above the cotyledons. xref: OBO_SF_PO:3293774 is_a: PO:0020142 ! stem internode [Term] id: PO:0020036 name: epiblast namespace: plant_anatomy def: "A portion of plant tissue that is a flap-like projection of the coleorhiza, inserted opposite the scutellum." [ISBN:0471244554] comment: The parenchyma cells of both the coleorhiza and epiblast may function in storage. Some researchers consider the epiblast and coleorhiza independent structures that differentiate from the same proembryonic tissue. xref: OBO_SF_PO:3140942 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0020034 ! coleorhiza [Term] id: PO:0020037 name: mesocotyl namespace: plant_anatomy def: "A shoot internode that is the part of an embryo axis or the stem of a seedling above the scutellum and below the coleoptile." [ISBN:0471244554] comment: Occurs in grasses. In grasses, the hypocotyl and cotyledon may not be visible and may be represented by the scutellar node and scutellum, making the mesocotyl similar to the epicotyl in other taxa. Elongation of the mesocotyl during seedling growth pushes the coleoptile above the soil surface. xref: OBO_SF_PO:3293779 is_a: PO:0020142 ! stem internode [Term] id: PO:0020038 name: petiole namespace: plant_anatomy def: "A stalk of a leaf." [APWeb:Glossary, GR:pj] subset: TraitNet is_a: PO:0025066 ! stalk relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0020039 name: leaf lamina namespace: plant_anatomy def: "A lamina that is part of a leaf, usually dorsiventrally flattened and expanded." [APWeb:Glossary] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet synonym: "leaf blade" RELATED [] xref: OBO_SF_PO:2971884 is_a: PO:0025060 ! lamina relationship: part_of PO:0025034 ! leaf [Term] id: PO:0020040 name: leaf base namespace: plant_anatomy def: "A phyllome base that is part of a leaf." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "leaf sheath base" RELATED [] synonym: "phyllid base" NARROW [] xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:3177673 is_a: PO:0025140 ! phyllome base relationship: part_of PO:0025034 ! leaf [Term] id: PO:0020041 name: stipule namespace: plant_anatomy def: "A phyllome that is one of (usually) a pair of appendages at a leaf base." [POC:curators] subset: TraitNet xref: OBO_SF_PO:3115551 is_a: PO:0006001 ! phyllome relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0020042 name: simple leaf namespace: plant_anatomy def: "A leaf in which the lamina is undivided." [Poc:curators] is_a: PO:0009025 ! vascular leaf [Term] id: PO:0020043 name: compound leaf namespace: plant_anatomy def: "A leaf having two or more distinct leaflets that are evident as such from early in development." [APWeb:Glossary] is_a: PO:0009025 ! vascular leaf [Term] id: PO:0020044 name: hyperphyll namespace: plant_anatomy def: "The unifacial terete apical portion of a monocot cotyledon, sometimes also visible on other leaves." [APWeb:Glossary] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020030 ! cotyledon [Term] id: PO:0020045 name: pinnate leaf namespace: plant_anatomy def: "A once-compound leaf with leaflets borne along a rachis." [APWeb:Glossary] comment: The total number of leaflets may be even or odd, in which case the leaf is called even-pinnate or odd-pinnate respectively. is_a: PO:0020043 ! compound leaf [Term] id: PO:0020046 name: palmate leaf namespace: plant_anatomy def: "A once-compound leaf divided into several leaflets which arise at the same point, there being no rachis." [APWeb:Glossary] is_a: PO:0020043 ! compound leaf [Term] id: PO:0020047 name: microsporocyte namespace: plant_anatomy def: "A diploid (2n) cell that undergoes meiosis and produces four haploid (1n) microspores." [ISBN:0878934030] subset: reference synonym: "microspore mother cell" RELATED [] synonym: "PMC" RELATED [] synonym: "pollen mother cell" RELATED [] xref: CL:0000248 is_a: PO:0006204 ! sporocyte relationship: develops_from PO:0006088 ! primary sporogenous cell relationship: part_of PO:0025202 ! microsporangium [Term] id: PO:0020048 name: microspore namespace: plant_anatomy def: "The smaller, in general, of the two kinds of spores produced after meiosis in the life cycle of a heterosporous plant, and on germination giving rise to the male gametophyte." [APWeb:Glossary] subset: reference xref: CL:0000252 is_a: PO:0025017 ! spore [Term] id: PO:0020049 name: leaflet namespace: plant_anatomy def: "One of the ultimate segments of a compound leaf." [APWeb:Glossary] subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020043 ! compound leaf [Term] id: PO:0020050 name: petiolule namespace: plant_anatomy def: "A stalk of a leaflet." [APWeb:Glossary] is_a: PO:0025066 ! stalk relationship: part_of PO:0020049 ! leaflet [Term] id: PO:0020051 name: stipel namespace: plant_anatomy def: "Stipule-like appendage(s) at the base of a leaflet (in unifoliolate or simple leaves, found at the top of the petiole)." [APWeb:Glossary] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0020049 ! leaflet [Term] id: PO:0020052 name: megaphyll namespace: plant_anatomy def: "OBSOLETE. Literally a large leaf, a leaf of any size whose vascular supply leaves one or more gaps as it departs from the stem vascular tissue." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020053 name: microphyll namespace: plant_anatomy def: "OBSOLETE. Literally a small leaf, a leaf of any size in which any vascular trace supplying it does not interrupt the central vascular cylinder when it departs, i.e. there are no leaf gaps." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020054 name: bud scale leaf namespace: plant_anatomy def: "A scale leaf that surrounds a dormant or perennating bud." [UMSL:tk] synonym: "bud scale" EXACT [] is_a: PO:0006003 ! scale leaf [Term] id: PO:0020055 name: leaf rachis namespace: plant_anatomy def: "A stalk that is the main axis of a pinnate or more highly compound leaf, that bears leaflets or divisions of the axis." [APWeb:Glossary] subset: TraitNet xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2972235 is_a: PO:0025066 ! stalk relationship: part_of PO:0020043 ! compound leaf [Term] id: PO:0020056 name: tegmen namespace: plant_anatomy def: "That part of the seed coat that develops from the inner integument." [APWeb:Glossary, ISBN:0080374913] synonym: "portion of tegmen tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009088 ! seed coat [Term] id: PO:0020057 name: testa namespace: plant_anatomy def: "That part of the seed coat that develops from the outer integument, or from the single integument when there is only one." [APWeb:Glossary, ISBN:0080374913] synonym: "portion of testa tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009088 ! seed coat [Term] id: PO:0020058 name: perisperm namespace: plant_anatomy alt_id: PO:0006335 def: "Diploid nutritive tissue in an angiosperm seed derived from nucellar tissue." [APWeb:Glossary] synonym: "portion of perisperm tissue" EXACT [] synonym: "seed nucellus" RELATED [] is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009010 ! seed [Term] id: PO:0020059 name: pollen wall namespace: plant_anatomy def: "OBSOLETE: Complex wall surrounding the micrsopore." [UMSL:fz] comment: This term is now available in the cellular_component aspect of the Gene Ontology, GO:0043667. subset: reference is_obsolete: true [Term] id: PO:0020060 name: caruncle namespace: plant_anatomy def: "An outgrowth from the surface of a seed, usually near the hilum or micropyle." [APWeb:Glossary] is_a: PO:0019022 ! arilloid [Term] id: PO:0020061 name: coma namespace: plant_anatomy def: "A portion of seed coat epidermis that consists of multiple seed trichomes at the micropyle." [POC:curators] subset: TraitNet synonym: "brush" EXACT [] xref: OBO_SF_PO:3115428 is_a: PO:0006048 ! seed coat epidermis relationship: has_part PO:0004511 ! seed trichome [Term] id: PO:0020062 name: elaiosome namespace: plant_anatomy def: "An appendage of a seed, usually rich in oil, attractive to animals, especially ants." [APWeb:Glossary] subset: TraitNet is_a: PO:0019022 ! arilloid [Term] id: PO:0020063 name: hilum namespace: plant_anatomy def: "A cardinal organ part that is a scar on a seed at the place where it was attached to a funicle." [POC:curators] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009010 ! seed [Term] id: PO:0020064 name: dehiscent fruit namespace: plant_anatomy def: "OBSOLETE. Fruit that breaks open at maturity to release the contents." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020065 name: indehiscent fruit namespace: plant_anatomy def: "OBSOLETE. Fruit that does not open at maturity." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020066 name: fleshy fruit namespace: plant_anatomy def: "OBSOLETE. The fruit may be derived from monocarpellate or multicarpellate gynoecia. Their walls may consist of the pericarp or of pericarp fused with extracarpellary tissue. The outer part of the fruit wall or the entire fruit wall may become fleshy by differentiating into soft, succulent parenchyma. Parts other than the wall such as placentae and partitions in multilocular ovaries may become fleshy." [ISBN:047124529] is_obsolete: true [Term] id: PO:0020075 name: mericarp namespace: plant_anatomy def: "OBSOLETE. One segment of a fruit of a schizocarp consisting of pericarp plus seed(s)." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020081 name: seed as dispersal unit namespace: plant_anatomy def: "OBSOLETE." [Poc:curators] is_obsolete: true [Term] id: PO:0020084 name: pyrene namespace: plant_anatomy def: "OBSOLETE. The 'stone' or 'pit' (endocarp plus seed) of a succulent fruit." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020085 name: seed and fruit wall as dispersal unit namespace: plant_anatomy def: "OBSOLETE." [Poc:curators] is_obsolete: true [Term] id: PO:0020086 name: multiple fruit namespace: plant_anatomy def: "OBSOLETE. Fruit on a common axis derived from the ovaries of several flowers." [APWeb:Glossary] is_obsolete: true [Term] id: PO:0020090 name: central cell namespace: plant_anatomy def: "The largest cell of the mature embryo sac. Contains two polar nuclei, which (after double fertilization) will develop into the endosperm." [TAIR:ki] subset: reference xref: CL:0000278 is_a: PO:0025026 ! megagametophyte cell relationship: part_of PO:0025074 ! embryo sac [Term] id: PO:0020091 name: obsolete microgametophyte namespace: plant_anatomy alt_id: PO:0020007 def: "A gametophyte that produces pollen sperm cells." [POC:curators] comment: This term was made obsolete because it only applied to angiosperms. Consider new term microgametophyte (PO:0025280) that can apply to all plants. Also consider pollen (PO:0025281) or antheridial microgametophyte (PO:0025283). subset: reference subset: TraitNet synonym: "male gametophyte" EXACT [] synonym: "pollen" RELATED [] synonym: "pollen grain" EXACT [] xref: OBO_SF_PO:3257959 xref: OBO_SF_PO:3257963 is_obsolete: true consider: PO:0025280 consider: PO:0025281 consider: PO:0025283 [Term] id: PO:0020092 name: obsolete megagametophyte namespace: plant_anatomy def: "A gametophyte that produces female gametes." [APweb:glossary] comment: This term was made obsolete because it only applied to angiosperms. Consider new term megagametophyte (PO:0025280) that can apply to all plants. Also consider embryo sac (PO:0025074) or archegonial megagametophyte (PO:0025282). subset: reference synonym: "embryo sac" RELATED [] synonym: "female gametophyte" RELATED [] xref: OBO_SF_PO:3257959 is_obsolete: true consider: PO:0025074 consider: PO:0025279 consider: PO:0025282 [Term] id: PO:0020093 name: antipodal cell namespace: plant_anatomy def: "Cell, commonly three in number as in the eight-nucleate embryo sac, located at the other end of the embryo sac from the egg cell." [APWeb:Glossary] comment: More or less persistent, multiplicative or not. subset: reference xref: CL:0000537 is_a: PO:0025026 ! megagametophyte cell relationship: part_of PO:0025074 ! embryo sac [Term] id: PO:0020094 name: plant egg cell namespace: plant_anatomy def: "A gamete produced by an archegonium or an embryo sac." [POC:curators] comment: The egg (megagamete) is usually larger than the sperm (microgamete). Female gametes may be defined as the non-motile gamete, rather than the larger gamete. subset: reference synonym: "female gamete" EXACT [] synonym: "megagamete" EXACT [] xref: CL:0000254 is_a: PO:0025006 ! gamete [Term] id: PO:0020095 name: polar nucleus namespace: plant_anatomy def: "OBSOLETE: Usually two nuclei in the center of the eight-nucleate embryo sac that fuse, and subsequently fuse with one of the male gametes to produce the endosperm." [APWeb:Glossary] comment: Comment: this term is now available in the cellular_component aspect of the Gene Ontology (GO:0043078). is_obsolete: true [Term] id: PO:0020096 name: egg apparatus namespace: plant_anatomy def: "A cardinal organ part that has as parts an egg cell and two synergids and is located at the micropylar end of the embryo sac." [POC:rw] comment: Found in angiosperms. subset: Angiosperm subset: reference xref: OBO_SF_PO:3132564 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025074 ! embryo sac [Term] id: PO:0020097 name: generative cell namespace: plant_anatomy def: "A cell of the male gametophyte of angiosperms that divides to produce two male gametes or sperm cells." [APWeb:Glossary] subset: reference xref: CL:0000280 is_a: PO:0009002 ! plant cell [Term] id: PO:0020099 name: vegetative cell namespace: plant_anatomy def: "A plant cell that is the larger cell of a male gametophyte in seed plants. It does not divide further and develops into a pollen tube cell." [POC:rw] subset: reference synonym: "tube cell" RELATED [ISBN:0716710072] xref: CL:0000296 is_a: PO:0009002 ! plant cell [Term] id: PO:0020100 name: hypocotyl namespace: plant_anatomy def: "A stem internode that is the part of a stem below the cotyledonary node and transitional to a root." [APWeb:Glossary] xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:3293772 is_a: PO:0020142 ! stem internode [Term] id: PO:0020101 name: stomium namespace: plant_anatomy def: "A plant anatomical space that is a slit in an anther lobe formed from when a dehiscence zone dehisces." [POC:curators] comment: Pollen may be released through the stomium. subset: reference is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0000002 ! anther wall [Term] id: PO:0020102 name: portion of transmitting tissue namespace: plant_anatomy def: "A portion of ground tissue in the style of a carpel through which the pollen tube grows; it connects the stigma and the inside of ovary." [GR:pj, ISBN:0080374913] subset: reference synonym: "transmitting tract" RELATED [] is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0009074 ! style [Term] id: PO:0020103 name: flag leaf namespace: plant_anatomy def: "The last mature leaf before the inflorescence in a cereal crop plant." [GR:pj] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025). is_a: PO:0006340 ! adult leaf [Term] id: PO:0020104 name: leaf sheath namespace: plant_anatomy def: "Any tubular portion of the leaf surrounding the stem, as in the Poaceae." [GR:pj] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025034 ! leaf [Term] id: PO:0020105 name: ligule namespace: plant_anatomy def: "A membranous or hairy appendage on the adaxial/upper surface of a leaf, at the junction between sheath and blade, especially in grasses." [APWeb:Glossary] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0020106 name: auricle namespace: plant_anatomy def: "Outgrowth at the base of a leaf blade that may wrap around the stem." [GR:pj] xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0009025 ! vascular leaf [Term] id: PO:0020108 name: suspensor namespace: plant_anatomy def: "An embryonic plant structure at the base of a plant embryo that develops from an embryonic basal cell and connects an embryo proper to the wall of a megagametophyte." [PMID:12271036] comment: The suspensor often allows the embryo to penetrate deep into the endosperm. Across plant species, suspensors are morphologically diverse and may be single- or multicellular, undifferentiated or highly differentiated, and variously shaped. xref: OBO_SF_PO:3132565 is_a: PO:0025099 ! embryo plant structure relationship: develops_from PO:0002002 ! embryo basal cell relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0020109 name: embryo hypophysis namespace: plant_anatomy def: "A plant cell that is the uppermost cell of a suspensor and from which part of the root and root cap in a plant embryo of angiosperms are derived." [ISBN:0471245208] subset: Angiosperm synonym: "embryonic hypophysis" EXACT [] is_a: PO:0009002 ! plant cell is_a: PO:0025028 ! embryo plant cell relationship: part_of PO:0020108 ! suspensor [Term] id: PO:0020110 name: scutellum namespace: plant_anatomy def: "An embryonic plant structure that is a more or less shield-shaped and absorptive portion of a plant embryo of Poaceae." [APWeb:Glossary, ISBN:0471244554] comment: May be a modified cotyledon. synonym: "haustorial cotyledon" RELATED [] xref: OBO_SF_PO:3132566 is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo [Term] id: PO:0020121 name: lateral root namespace: plant_anatomy def: "A root that develops from a lateral root primordium located in the pericycle layer of a primary root." [ISBN:0122151704] is_a: PO:0009005 ! root relationship: develops_from PO:0000016 ! lateral root primordium [Term] id: PO:0020122 name: inflorescence axis namespace: plant_anatomy def: "A shoot axis that is part of an inflorescence." [POC:rw] subset: Angiosperm subset: TraitNet synonym: "first order inflorescence branch" RELATED [] synonym: "inflorescence rachis" RELATED [] is_a: PO:0025029 ! shoot axis relationship: part_of PO:0009049 ! inflorescence [Term] id: PO:0020123 name: root cap namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of the root tip and covers the root apical meristem." [ISBN:0716710072, POC:curators] comment: Often composed of living and dead parenchyma cells. Protects the root apical meristem. subset: reference synonym: "rootcap" EXACT [ISBN:0716710072] is_a: PO:0025095 ! root parenchyma relationship: part_of PO:0000025 ! root tip [Term] id: PO:0020124 name: root stele namespace: plant_anatomy alt_id: PO:0003012 def: "A stele that is part of a root." [POC:rw] comment: Includes the pericycle as the outermost layer of the stele. subset: Maize subset: reference subset: TraitNet synonym: "root vascular cylinder" RELATED [] is_a: PO:0025197 ! stele relationship: part_of PO:0009005 ! root [Term] id: PO:0020125 name: elongation zone namespace: plant_anatomy def: "The portion of the root that includes small, densely cytoplasmic cells that are dividing and expanding in size." [GR:pj] comment: This term was made obsolete because the definition was not correct. A new term, root elongation zone (PO:0025181), was created instead. subset: reference is_obsolete: true replaced_by: PO:0025181 [Term] id: PO:0020126 name: tassel namespace: plant_anatomy def: "The functionally-staminate flowering structure that terminates the stem of a Zea mays plant." [MaizeGDB:lv] comment: Branched inflorescence with a central axis and about 10-50 lateral branches. subset: Maize subset: reference is_a: PO:0009049 ! inflorescence [Term] id: PO:0020127 name: primary root namespace: plant_anatomy alt_id: PO:0020089 def: "A root that develops directly from an embryonic radicle." [ISBN:0122151704, POC:curators] comment: Often the central axis of a root system. subset: TraitNet synonym: "tap root" EXACT [] is_a: PO:0009005 ! root relationship: develops_from PO:0020031 ! radicle [Term] id: PO:0020128 name: leaf margin namespace: plant_anatomy def: "The margin of any flattened part of a leaf." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: TraitNet xref: OBO_SF_PO:2972280 is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0025034 ! leaf [Term] id: PO:0020130 name: central root cap namespace: plant_anatomy def: "A portion of root parenchyma tissue that is the central part of a root cap in which the cells are arranged in longitudinal files." [ISBN:0878938567, POC:curators] synonym: "columella cells" EXACT [] synonym: "columella rootcap" EXACT [ISBN:0716710072] is_a: PO:0025095 ! root parenchyma relationship: part_of PO:0020123 ! root cap [Term] id: PO:0020131 name: lateral root cap namespace: plant_anatomy def: "A portion of root parenchyma tissue that is part of a root cap and is parallel to the sides of a root axis." [ISBN:0878938567, POC:curators] comment: This is the general term for the lateral portion of any root cap and not the term for a root cap of lateral root (PO:0003018) or lateral root cap of lateral root (PO:0003020). synonym: "peripheral cells" RELATED [] is_a: PO:0025095 ! root parenchyma relationship: part_of PO:0020123 ! root cap [Term] id: PO:0020132 name: columella root cap cell namespace: plant_anatomy def: "Cell that constitutes the central part of the root cap, arranged in longitudinal files." [PMID:9384380, TAIR:ki] is_a: PO:0025030 ! ground tissue cell relationship: develops_from PO:0020133 ! columella root cap initial cell [Term] id: PO:0020133 name: columella root cap initial cell namespace: plant_anatomy def: "A root initial cell that produces columella cells in the root cap. In direct contact with quiescent center." [ISBN:0471245208, TAIR:ki] synonym: "columella root cap stem cell" EXACT [] synonym: "columella stem cell" EXACT [] is_a: PO:0000059 ! root initial cell [Term] id: PO:0020134 name: statolith namespace: plant_anatomy def: "OBSOLETE. Solid cell inclusion of starch containing plastids occurring in root cap cells." [GR:pj] comment: This is sub-cellular term is_obsolete: true [Term] id: PO:0020135 name: root differentiation zone namespace: plant_anatomy alt_id: PO:0003002 def: "A plant axis differentiation zone that is the part of a root and is located behind a root elongation zone." [POC:curators] comment: Most of the primary tissues of a root mature in the differentiation zone. This zone is where root hairs are produced. subset: reference synonym: "region of root maturation" EXACT [ISBN:0716710072] synonym: "root maturation zone" EXACT [] synonym: "root specialization zone" EXACT [] is_a: PO:0025119 ! plant axis differentiation zone relationship: part_of PO:0009005 ! root [Term] id: PO:0020136 name: Zea ear namespace: plant_anatomy def: "The distal part of a lateral (axillary) branch in Zea that bears the functionally-carpellate florets in a highly contracted inflorescence." [MaizeGDB:lv] subset: Maize subset: reference synonym: "cob" RELATED [] is_a: PO:0009049 ! inflorescence [Term] id: PO:0020137 name: leaf apex namespace: plant_anatomy def: "A phyllome apex that is part of a leaf." [POC:rw, UMSL:fz] comment: It is not precisely defined how far toward the base from the tip a leaf apex extends. For the apical most portion of a leaf, use the term leaf tip. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "phyllid apex" NARROW [] xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:3177673 is_a: PO:0025139 ! phyllome apex relationship: part_of PO:0025034 ! leaf [Term] id: PO:0020138 name: leaf vein namespace: plant_anatomy def: "A strand of vascular tissue in the leaf blade." [APWeb:Glossary] subset: TraitNet is_a: PO:0009015 ! portion of vascular tissue relationship: part_of PO:0000036 ! leaf vascular system [Term] id: PO:0020139 name: midvein namespace: plant_anatomy def: "The central, and usually the most prominent, vein of a leaf or leaf-like organ." [APWeb:Glossary] synonym: "mid rib" RELATED [] is_a: PO:0020138 ! leaf vein [Term] id: PO:0020140 name: secondary vein namespace: plant_anatomy def: "Second order veins in the leaf blade." [GR:pj] synonym: "veinlet" RELATED [] is_a: PO:0020138 ! leaf vein [Term] id: PO:0020141 name: stem node namespace: plant_anatomy def: "A shoot node that is part of a stem." [APWeb:Glossary] is_a: PO:0005004 ! shoot node relationship: part_of PO:0009047 ! stem [Term] id: PO:0020142 name: stem internode namespace: plant_anatomy def: "A shoot internode that is part of a stem." [POC:curators] comment: See node. is_a: PO:0005005 ! shoot internode relationship: part_of PO:0009047 ! stem [Term] id: PO:0020144 name: apical meristem namespace: plant_anatomy def: "A maximal portion of meristem tissue located at an apex of a shoot system or root system." [GR:pj, POC:curators] subset: TraitNet synonym: "primary meristem" RELATED [] is_a: PO:0009013 ! meristem [Term] id: PO:0020145 name: lateral meristem namespace: plant_anatomy def: "A meristem containing cells along the stem or root that first differentiate and function as members of a mature tissue system but then again take up meristematic activity." [APWeb:Glossary] subset: TraitNet synonym: "secondary meristem" RELATED [] is_a: PO:0009013 ! meristem [Term] id: PO:0020147 name: root apical meristem namespace: plant_anatomy def: "An apical meristem of the root system." [GR:pj, UMSL:fz] comment: In most cases it is involved in root elongation. subset: TraitNet synonym: "promeristem" RELATED [] is_a: PO:0006085 ! root meristem is_a: PO:0020144 ! apical meristem [Term] id: PO:0020148 name: shoot apical meristem namespace: plant_anatomy def: "A shoot meristem formed in the apex of the shoot, including meristems originating as axillary shoot meristems." [UMSL:fz] subset: TraitNet synonym: "apical meristem" RELATED [] synonym: "primary shoot meristem" RELATED [] is_a: PO:0006079 ! shoot meristem is_a: PO:0020144 ! apical meristem relationship: part_of PO:0000037 ! shoot apex [Term] id: PO:0020149 name: quiescent center namespace: plant_anatomy def: "A portion of meristem tissue that is part of a root apical meristem and consists of mitotically and metabolically inactive cells and is positioned behind the root protoderm." [ISBN:0122151704, POC:curators] comment: If a root cap is present, the quiescent center is behind the root cap. is_a: PO:0009013 ! meristem relationship: part_of PO:0020147 ! root apical meristem [Term] id: PO:0025001 name: cardinal organ part namespace: plant_anatomy def: "A plant structure that is a proper part of an organ and includes portions of tissues of at least two different types." [POC:curators] comment: Cardinal refers to the fact that these are biologically meaningful parts, not arbitrary. Examples include lobe (PO TBD), operculum (PO TBD), neck (PO TBD), petiole PO:0020038, leaflet PO:0020049. subset: Arabidopsis subset: TraitNet xref: OBO_SF_PO:2903994 xref: OBO_SF_PO:2945268 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0009002 ! plant cell relationship: part_of PO:0009008 ! plant organ created_by: Ramona creation_date: 2010-02-11T01:18:24Z [Term] id: PO:0025002 name: basal root namespace: plant_anatomy def: "A root that arises from a part of the hypocotyl." [POC:curators] subset: TraitNet synonym: "adventitious root" BROAD [] is_a: PO:0009005 ! root created_by: Ramona creation_date: 2010-09-16T03:03:49Z [Term] id: PO:0025003 name: tuber axillary shoot namespace: plant_anatomy def: "An axillary shoot that develops from a tuber axillary bud." [POC:curators] is_a: PO:0006343 ! axillary shoot system created_by: Ramona creation_date: 2010-09-16T03:17:06Z [Term] id: PO:0025004 name: plant axis namespace: plant_anatomy def: "An axial plant organ." [POC:curators] comment: Includes roots and shoots. subset: TraitNet is_a: PO:0009008 ! plant organ created_by: Ramona creation_date: 2010-07-01T03:44:41Z [Term] id: PO:0025005 name: organ margin namespace: plant_anatomy def: "The edge of an organ and the area immediately internally adjacent to it." [POC:curators "Ithaca meeting, Dec. 2009"] comment: Only flattened or laminar organs or organ parts will have a margin. subset: TraitNet xref: OBO_SF_PO:2903994 xref: OBO_SF_PO:2971884 xref: OBO_SF_PO:2971897 is_a: PO:0025001 ! cardinal organ part created_by: rwalls creation_date: 2010-03-12T10:33:57Z [Term] id: PO:0025006 name: gamete namespace: plant_anatomy def: "A plant cell that has half the chromosome complement of the sporophyte and is capable of fertilization to create a zygote." [POC:curators] xref: OBO_SF_PO:2941267 is_a: PO:0009002 ! plant cell created_by: cooperl creation_date: 2010-03-03T03:06:46Z [Term] id: PO:0025007 name: collective plant structure namespace: plant_anatomy def: "A plant structure that is a proper part of a plant and is composed of two or more organs and any associated portions of plant tissue." [POC:curators] comment: Organs can be of the same type or different types. Examples include: flower PO:0009046, perianth PO:0009058, inflorescence PO:0009049. See also collective organ part structure, for plant structures composed of parts of multiple organs, but no complete organs. subset: TraitNet synonym: "collective plant organ structure" EXACT [] xref: OBO_SF_PO:2954382 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0009002 ! plant cell disjoint_from: PO:0009007 ! portion of plant tissue relationship: has_part PO:0009008 ! plant organ created_by: Ramona creation_date: 2010-02-09T04:12:11Z [Term] id: PO:0025008 name: petal margin namespace: plant_anatomy def: "The margin of a petal." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009032 ! petal created_by: rwalls creation_date: 2010-03-12T10:49:36Z [Term] id: PO:0025009 name: leaf lamina margin namespace: plant_anatomy def: "The margin of a leaf lamina." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0020128 ! leaf margin relationship: part_of PO:0020039 ! leaf lamina created_by: Ramona creation_date: 2010-03-25T10:04:37Z [Term] id: PO:0025010 name: petiole margin namespace: plant_anatomy def: "The margin of a flattened petiole." [POC:curators] comment: Petiole margins may be found in flattened (laminar) petioles, but may also occur in laminar extensions of petioles that are rounded or c-shaped in cross section. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: Musa xref: CO_125:0000006 xref: CO_125:0000016 is_a: PO:0020128 ! leaf margin relationship: part_of PO:0025129 ! petiole lamina created_by: Ramona creation_date: 2010-03-25T10:04:37Z [Term] id: PO:0025011 name: bract margin namespace: plant_anatomy def: "The margin of a bract." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009055 ! bract created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025012 name: cotyledon margin namespace: plant_anatomy def: "The margin of a cotyledon." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0020030 ! cotyledon created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025013 name: prophyll margin namespace: plant_anatomy def: "The margin of a prophyll." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009042 ! prophyll created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025014 name: scale leaf margin namespace: plant_anatomy def: "The margin of a scale leaf." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0006003 ! scale leaf created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025015 name: tepal margin namespace: plant_anatomy def: "The margin of a tepal." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025016 name: sporophyll margin namespace: plant_anatomy def: "The margin of a sporophyll." [POC:curators] is_a: PO:0025018 ! phyllome margin relationship: part_of PO:0009026 ! sporophyll created_by: Ramona creation_date: 2010-03-25T10:15:35Z [Term] id: PO:0025017 name: spore namespace: plant_anatomy def: "A plant cell that arises through meiosis and develops into a gametophyte." [POC:curators] xref: OBO_SF_PO:2972117 is_a: PO:0009002 ! plant cell created_by: Ramona creation_date: 2010-04-02T09:53:48Z [Term] id: PO:0025018 name: phyllome margin namespace: plant_anatomy def: "The margin of a phyllome." [POC:curators] subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025005 ! organ margin created_by: Ramona creation_date: 2010-04-02T10:51:16Z [Term] id: PO:0025019 name: carpel margin namespace: plant_anatomy def: "The margin of a carpel." [POC:curators] comment: Only flattened carpels can have a margin. is_a: PO:0025016 ! sporophyll margin relationship: part_of PO:0009030 ! carpel created_by: Ramona creation_date: 2010-04-02T01:26:01Z [Term] id: PO:0025020 name: stamen margin namespace: plant_anatomy def: "The margin of a stamen." [POC:curators] comment: Only flattened stamens can have a margin. is_a: PO:0025016 ! sporophyll margin relationship: part_of PO:0009029 ! stamen created_by: Ramona creation_date: 2010-04-02T01:27:23Z [Term] id: PO:0025021 name: collective tepal structure namespace: plant_anatomy def: "A perianth consisting of two or more tepals." [POC:Curators] xref: OBO_SF_PO:2988258 is_a: PO:0009058 ! perianth created_by: cooperl creation_date: 2010-04-14T12:41:50Z [Term] id: PO:0025022 name: collective leaf structure namespace: plant_anatomy def: "A collective phyllome structure composed of two or more leaves." [POC:curators] comment: This term replaces the obsolete term leaf whorl (PO:0008034). If you are looking for annotations for PO:0008034, please use this term instead. synonym: "leaf whorl" NARROW [] synonym: "rosette" NARROW [] xref: OBO_SF_PO:2988258 is_a: PO:0025023 ! collective phyllome structure created_by: Ramona creation_date: 2010-04-21T12:29:35Z [Term] id: PO:0025023 name: collective phyllome structure namespace: plant_anatomy alt_id: PO:0008033 def: "A collective plant structure that consists of two or more phyllomes originating from the same node or from one or more adjacent nodes with compressed internodes." [POC:Curators] subset: TraitNet synonym: "floral whorl" NARROW [GO:0048438 "floral whorl development", GO:0048457 "floral whorl morphogenisis", GO:0048458 "floral whorl formation", GO:0048459 "floral whorl structural organization"] synonym: "phyllome whorl" RELATED [] synonym: "whorl" NARROW [] xref: OBO_SF_PO:2980171 xref: OBO_SF_PO:2993809 is_a: PO:0025007 ! collective plant structure created_by: cooperl creation_date: 2010-04-28T11:04:34Z [Term] id: PO:0025024 name: branch node namespace: plant_anatomy def: "A shoot node that is part of a branch." [POC:curators] is_a: PO:0005004 ! shoot node relationship: part_of PO:0025073 ! branch created_by: Ramona creation_date: 2010-07-16T09:59:08Z [Term] id: PO:0025025 name: root system namespace: plant_anatomy def: "A collective plant structure that produces root apical meristems and the plant structures that arise from them." [POC:curators] comment: Generally the below ground portion of a vascular plant. subset: TraitNet is_a: PO:0025007 ! collective plant structure disjoint_from: PO:0009006 ! shoot system created_by: Ramona creation_date: 2010-07-01T02:11:26Z [Term] id: PO:0025026 name: megagametophyte cell namespace: plant_anatomy def: "A plant cell that is part of an embryo sac." [POC:rw] synonym: "embryo sac cell" RELATED [] synonym: "megagametophytic cell" EXACT [] is_a: PO:0009002 ! plant cell created_by: Ramona creation_date: 2010-05-07T02:36:24Z [Term] id: PO:0025027 name: microgametophytic cell namespace: plant_anatomy def: "A plant cell that is part of a male gametophyte." [POC:rw] comment: This term was made obsolete because it is not appropriate for non-seed plants. is_obsolete: true created_by: Ramona creation_date: 2010-05-07T02:36:55Z [Term] id: PO:0025028 name: embryo plant cell namespace: plant_anatomy def: "A plant cell that is part of a plant embryo." [POC:curators] synonym: "embryonic plant cell" EXACT [] xref: OBO_SF_PO:3177665 is_a: PO:0009002 ! plant cell is_a: PO:0025099 ! embryo plant structure intersection_of: PO:0009002 ! plant cell intersection_of: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2010-05-07T02:41:17Z [Term] id: PO:0025029 name: shoot axis namespace: plant_anatomy def: "A plant axis that is part of a shoot system." [POC:curators] comment: Often bears leaves and branches. In vascular plants, has at least one node and one internode. subset: TraitNet synonym: "caullome" EXACT [] synonym: "shoot" RELATED [] is_a: PO:0025004 ! plant axis relationship: part_of PO:0009006 ! shoot system created_by: Ramona creation_date: 2010-07-01T03:46:35Z [Term] id: PO:0025030 name: ground tissue cell namespace: plant_anatomy def: "A plant cell that is part of a portion of ground tissue." [POC:curators] comment: Includes parenchyma, collenchyma and sclerenchyma cells. subset: TraitNet synonym: "fundamental tissue cell" EXACT [] xref: OBO_SF_PO:3274184 is_a: PO:0009002 ! plant cell relationship: part_of PO:0025059 ! portion of ground tissue created_by: Ramona creation_date: 2010-05-07T02:47:45Z [Term] id: PO:0025031 name: laticifer cell namespace: plant_anatomy def: "A ground tissue cell that contains latex." [POC:curators] is_a: PO:0025030 ! ground tissue cell created_by: Ramona creation_date: 2010-07-12T09:08:10Z [Term] id: PO:0025032 name: hydroid namespace: plant_anatomy def: "A plant cell that is dead at maturity, lacks specialized wall thickenings or lignin, and has tapered ends that are thin and partially hydrolyzed." [ISBN:0962073342, ISBN:376821110] comment: Hydroids are water and mineral conducting cells found in bryophytes in axes and leaves in the gametophytic phase and in the seta in the sporophytic phase. subset: Bryophytes synonym: "hydroid cell" EXACT [] is_a: PO:0009002 ! plant cell disjoint_from: PO:0000290 ! tracheary element relationship: part_of PO:0030047 ! hydrome created_by: Ramona creation_date: 2010-05-12T04:46:21Z [Term] id: PO:0025033 name: leptoid namespace: plant_anatomy def: "A plant that resembles in structure the sieve elements of vascular plants." [ISBN:376821110, ISBN:962073342] comment: A carbohydrate and amino acid conducting cell found in bryophytes in axes and leaves in the gametophytic phase and in the seta in the sporophytic phase. Leptoids have no nucleus at maturity. Carbohydrate and amino acid conducting cells in bryophytes range from conducting parenchyma cells that are indistinguishable from other parenchyma cells to 'leptoids sensu strictu' that are structurally comparable to sieve elements in vascular plants, as well as many intermediate forms. The term leptoid is used for cells that are distinguishable from other parenchyma cells, whether they be intermediate or leptoids sensu strictu. subset: Bryophytes synonym: "leptoid cell" EXACT [] is_a: PO:0009002 ! plant cell disjoint_from: PO:0000289 ! sieve tube member relationship: part_of PO:0030048 ! leptome created_by: Ramona creation_date: 2010-05-12T04:49:59Z [Term] id: PO:0025034 name: leaf namespace: plant_anatomy def: "A phyllome that is not associated with a reproductive structure." [POC:curators] subset: TraitNet xref: OBO_SF_PO:3167333 xref: OBO_SF_PO:3205370 is_a: PO:0006001 ! phyllome relationship: develops_from PO:0000017 ! leaf primordium created_by: Ramona creation_date: 2010-07-12T01:31:44Z [Term] id: PO:0025035 name: storage parenchyma namespace: plant_anatomy def: "A portion of parenchyma specialized for carbohydrate storage." [POC:curators] comment: This tissue could be found in any organ, but often occurs in fruits or tubers. New GO term carbohydrate storage has been requested. synonym: "flesh" EXACT [] synonym: "fleshy tissue" EXACT [] synonym: "portion of storage parenchyma" EXACT [] xref: CHEBI:23008 "carbohydrate" is_a: PO:0005421 ! parenchyma created_by: Ramona creation_date: 2010-05-25T04:30:20Z [Term] id: PO:0025036 name: tuber storage parenchyma namespace: plant_anatomy def: "A portion of storage parenchyma that is part of a tuber." [POC:curators] comment: This is the flesh of a tuber. See part_of children for individual components of tuber flesh. synonym: "tuber flesh" EXACT [] xref: OBO_SF_PO:3005637 is_a: PO:0025035 ! storage parenchyma relationship: part_of PO:0004543 ! tuber created_by: Ramona creation_date: 2010-05-25T04:33:26Z [Term] id: PO:0025037 name: fruit storage parenchyma namespace: plant_anatomy def: "A portion of storage parenchyma that is part of a fruit." [POC:curators] synonym: "fruit flesh" EXACT [] is_a: PO:0025035 ! storage parenchyma relationship: part_of PO:0009001 ! fruit created_by: Ramona creation_date: 2010-05-25T04:33:26Z [Term] id: PO:0025038 name: subterranean tuber storage parenchyma namespace: plant_anatomy def: "A portion of tuber storage parenchyma that is part of a subterranean tuber." [POC:curators] comment: This term is used to refer to potato tuber flesh. See part_of children for individual components of subterranean tuber flesh. subset: Potato synonym: "potato tuber flesh" NARROW [] xref: OBO_SF_PO:3005637 is_a: PO:0025036 ! tuber storage parenchyma relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-05-25T04:38:30Z [Term] id: PO:0025039 name: aerial tuber storage parenchyma namespace: plant_anatomy def: "A portion of tuber storage parenchyma that is part of an aerial tuber." [POC:curators] comment: See part_of children for individual components of aerial tuber flesh. xref: OBO_SF_PO:3005637 is_a: PO:0025036 ! tuber storage parenchyma relationship: part_of PO:0004548 ! aerial tuber created_by: Ramona creation_date: 2010-05-25T04:38:30Z [Term] id: PO:0025040 name: tuber axillary vegetative bud namespace: plant_anatomy def: "An axillary vegetative bud that is part of a tuber." [POC:curators] synonym: "tuber bud" EXACT [] synonym: "tuber eye" RELATED [] xref: OBO_SF_PO:3005636 is_a: PO:0004712 ! axillary vegetative bud relationship: part_of PO:0004543 ! tuber created_by: Ramona creation_date: 2010-05-26T08:09:37Z [Term] id: PO:0025041 name: aerial tuber axillary vegetative bud namespace: plant_anatomy def: "A tuber axillary vegetative bud that is part of an aerial tuber." [POC:curators] xref: OBO_SF_PO:3005636 is_a: PO:0025040 ! tuber axillary vegetative bud relationship: part_of PO:0004548 ! aerial tuber created_by: Ramona creation_date: 2010-05-26T08:18:09Z [Term] id: PO:0025042 name: subterranean tuber axillary vegetative bud namespace: plant_anatomy def: "A tuber axillary vegetative bud that is part of a subterranean tuber." [POC:curators] comment: A structure on the tuber surface that can sprout. In potatoes, axillary vegetative buds (eyes) can determine processing quality. Scale that the breeders use to rate the buds/sprouts of tubers: 1. none, 2. swollen eye, 3. sprout ca. 1/4", 4. sprout ca. 1/2", 5. sprout ca. 1", 6. sprout ca. 2", 7. sprout ca. 3", 8. new top growth, 9. chain tubers. subset: Potato synonym: "eye" BROAD [] synonym: "potato eye" NARROW [] synonym: "swollen eye" NARROW [] synonym: "tuber eye" BROAD [] xref: OBO_SF_PO:3005636 is_a: PO:0025040 ! tuber axillary vegetative bud relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-05-26T08:18:09Z [Term] id: PO:0025043 name: tuber periderm namespace: plant_anatomy def: "A portion of shoot periderm that is part of a tuber." [POC:curators] xref: OBO_SF_PO:3005635 is_a: PO:0005048 ! shoot axis periderm relationship: part_of PO:0004543 ! tuber created_by: Ramona creation_date: 2010-05-26T03:58:54Z [Term] id: PO:0025044 name: aerial tuber periderm namespace: plant_anatomy def: "A portion of tuber periderm that is part of an aerial tuber." [POC:curators] is_a: PO:0025043 ! tuber periderm created_by: Ramona creation_date: 2010-05-27T09:31:12Z [Term] id: PO:0025045 name: subterranean tuber periderm namespace: plant_anatomy def: "A portion of tuber periderm that is part of a subterranean tuber." [POC:curators] comment: The skin of young potatoes is epidermis while the skin of mature potatoes is periderm. subset: Potato synonym: "mature potato tuber skin" NARROW [ISSN:0022-0957] is_a: PO:0025043 ! tuber periderm relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-05-27T09:31:12Z [Term] id: PO:0025046 name: tuber epidermis namespace: plant_anatomy def: "A portion of shoot axis epidermis that is part of a tuber." [POC:curators] xref: OBO_SF_PO:3005635 is_a: PO:0000112 ! shoot axis epidermis relationship: part_of PO:0004543 ! tuber created_by: Ramona creation_date: 2010-05-27T09:37:30Z [Term] id: PO:0025047 name: aerial tuber epidermis namespace: plant_anatomy def: "A portion of tuber epidermis that is part of an aerial tuber." [POC:curators] is_a: PO:0025046 ! tuber epidermis relationship: part_of PO:0004548 ! aerial tuber created_by: Ramona creation_date: 2010-05-27T09:55:39Z [Term] id: PO:0025048 name: subterranean tuber epidermis namespace: plant_anatomy def: "A tuber epidermis that is part of a subterranean tuber." [POC:curators] comment: The skin of young potatoes is epidermis while the skin of mature potatoes is periderm. synonym: "young potato tuber skin" NARROW [] is_a: PO:0025046 ! tuber epidermis relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-05-27T09:55:39Z [Term] id: PO:0025049 name: subterranean tuber interfascicular region namespace: plant_anatomy def: "A tuber interfascicular region that is part of a subterranean tuber storage parenchyma." [ISSN:0003-0589 "Reeve et al. 1969", POC:curators] comment: In potatoes, the interfascicular region extends to the subterranean tuber axillary vegetative buds (eyes). subset: Potato is_a: PO:0025050 ! tuber interfascicular region relationship: part_of PO:0025038 ! subterranean tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T01:41:11Z [Term] id: PO:0025050 name: tuber interfascicular region namespace: plant_anatomy def: "An interfascicular region that is part of a tuber storage parenchyma." [POC:curators] synonym: "tuber flesh" BROAD [] xref: OBO_SF_PO:3011081 is_a: PO:0006202 ! interfascicular region relationship: part_of PO:0025036 ! tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T03:23:27Z [Term] id: PO:0025051 name: aerial tuber interfascicular region namespace: plant_anatomy def: "A tuber interfascicular region that is part of an aerial tuber storage parenchyma." [POC:curators] is_a: PO:0025050 ! tuber interfascicular region relationship: part_of PO:0025039 ! aerial tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T03:36:07Z [Term] id: PO:0025052 name: tuber pith namespace: plant_anatomy def: "A portion of pith that is part of a tuber storage parenchyma." [POC:curators] synonym: "tuber flesh" BROAD [] xref: OBO_SF_PO:3011076 is_a: PO:0005041 ! shoot axis pith relationship: part_of PO:0025036 ! tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T04:04:39Z [Term] id: PO:0025053 name: subterranean tuber pith namespace: plant_anatomy def: "A portion of tuber pith that is part of a subterranean tuber storage parenchyma." [ISSN:0003-0589 "Reeve et al. 1969", POC:curators] comment: In potatoes, this is part of the flesh. subset: Potato synonym: "water core" NARROW [ISSN:0003-0589 "Reeve et al. 1969"] is_a: PO:0025052 ! tuber pith relationship: part_of PO:0025038 ! subterranean tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T04:06:52Z [Term] id: PO:0025054 name: aerial tuber pith namespace: plant_anatomy def: "A portion of tuber pith that is part of an aerial tuber storage parenchyma." [POC:curators] is_a: PO:0025052 ! tuber pith relationship: part_of PO:0025039 ! aerial tuber storage parenchyma created_by: Ramona creation_date: 2010-06-01T04:06:58Z [Term] id: PO:0025055 name: tuber cortex namespace: plant_anatomy def: "A portion of stem cortex that is part of a tuber storage parenchyma." [POC:curators] xref: OBO_SF_PO:3011079 is_a: PO:0000223 ! shoot axis cortex relationship: part_of PO:0025036 ! tuber storage parenchyma created_by: rwalls creation_date: 2010-06-02T02:51:28Z [Term] id: PO:0025056 name: aerial tuber cortex namespace: plant_anatomy def: "A portion of tuber cortex that is part of an aerial tuber storage parenchyma." [POC:curators] is_a: PO:0025055 ! tuber cortex intersection_of: PO:0025055 ! tuber cortex intersection_of: part_of PO:0025039 ! aerial tuber storage parenchyma relationship: part_of PO:0025039 ! aerial tuber storage parenchyma created_by: Ramona creation_date: 2010-06-03T08:05:23Z [Term] id: PO:0025057 name: subterranean tuber cortex namespace: plant_anatomy def: "A portion of tuber cortex that is part of a subterranean tuber storage parenchyma." [ISSN:0003-0589 "Reeve et al. 1969", POC:curators] synonym: "Outer storage tissue" EXACT [ISSN:0003-0589 "Reeve et al. 1969"] is_a: PO:0025055 ! tuber cortex intersection_of: PO:0025055 ! tuber cortex intersection_of: part_of PO:0025038 ! subterranean tuber storage parenchyma relationship: part_of PO:0025038 ! subterranean tuber storage parenchyma created_by: Ramona creation_date: 2010-06-03T08:05:23Z [Term] id: PO:0025058 name: perimedullary zone namespace: plant_anatomy def: "A portion of parenchyma that is the outer layer of a portion of pith." [ISBN:0471244554] comment: The term perimedullary zone is only used when the outer layer of the pith is distinct from the inner layer. xref: OBO_SF_PO:3011661 is_a: PO:0005421 ! parenchyma relationship: part_of PO:0006109 ! pith created_by: Ramona creation_date: 2010-06-03T12:52:12Z [Term] id: PO:0025059 name: portion of ground tissue namespace: plant_anatomy def: "Any portion of plant tissue other than epidermis or vascular tissue." [ISBN:0-7167-1007-2, ISBN:0471244554] comment: Develops from the ground meristem (eg, meristem L2 and meristem L3). subset: TraitNet synonym: "fundamental tissue" EXACT [ISBN:0471244554 "Esau Plant Anatomy"] xref: OBO_SF_PO:3007983 is_a: PO:0009007 ! portion of plant tissue created_by: cooperl creation_date: 2009-12-17T03:06:13Z [Term] id: PO:0025060 name: lamina namespace: plant_anatomy def: "A regional part of an anatomical structure that is enlarged through lateral growth." [POCXX:curaors] subset: TraitNet xref: OBO_SF_PO:2971884 is_a: PO:0025001 ! cardinal organ part created_by: cooperl creation_date: 2009-12-18T11:23:59Z [Term] id: PO:0025061 name: tuber perimedullary zone namespace: plant_anatomy def: "A perimedullary zone that is part of a tuber pith." [POC:curators] synonym: "tuber flesh" BROAD [] is_a: PO:0025064 ! shoot axis perimedullary zone relationship: part_of PO:0025052 ! tuber pith created_by: rwalls creation_date: 2010-06-04T12:58:17Z [Term] id: PO:0025062 name: aerial tuber perimedullary zone namespace: plant_anatomy def: "A tuber perimedullary zone that is part of an aerial tuber pith." [POC:curators] is_a: PO:0025061 ! tuber perimedullary zone relationship: part_of PO:0025054 ! aerial tuber pith created_by: rwalls creation_date: 2010-06-04T01:00:13Z [Term] id: PO:0025063 name: subterranean tuber perimedullary zone namespace: plant_anatomy def: "A tuber perimedullary zone that is part of a subterranean tuber pith." [ISSN:0003-0589 "Reeve et al. 1969", POC:curators] subset: Potato is_a: PO:0025061 ! tuber perimedullary zone relationship: part_of PO:0025053 ! subterranean tuber pith created_by: rwalls creation_date: 2010-06-04T01:00:13Z [Term] id: PO:0025064 name: shoot axis perimedullary zone namespace: plant_anatomy def: "A perimedullary zone that is part of a shoot axis pith." [POC:curators] comment: Can occur in a stem or branch. synonym: "branch perimedullary zone" NARROW [] synonym: "stem perimedullary zone" NARROW [] is_a: PO:0025058 ! perimedullary zone relationship: part_of PO:0005041 ! shoot axis pith created_by: Ramona creation_date: 2010-06-04T05:05:16Z [Term] id: PO:0025065 name: root perimedullary zone namespace: plant_anatomy def: "A perimedullary zone that is part of a root pith." [POC:curators] is_a: PO:0025058 ! perimedullary zone relationship: part_of PO:0005040 ! root pith created_by: Ramona creation_date: 2010-06-04T05:05:36Z [Term] id: PO:0025066 name: stalk namespace: plant_anatomy def: "A cardinal organ part that is elongated and sub-cylindrical to cylindrical and supports another cardinal organ part." [POC:curators] comment: Some stalks may be ridged or grooved. subset: TraitNet xref: OBO_SF_PO:2903994 xref: OBO_SF_PO:2972224 xref: PATO:0001873 "cylindrical" xref: PATO:0002226 "subscylindrical" is_a: PO:0025001 ! cardinal organ part created_by: cooperl creation_date: 2009-12-18T10:09:17Z [Term] id: PO:0025067 name: seed storage parenchyma namespace: plant_anatomy def: "A portion of storage parenchyma that is part of a seed." [POC:curators] xref: OBO_SF_PO:3016492 is_a: PO:0025035 ! storage parenchyma relationship: part_of PO:0009010 ! seed created_by: Ramona creation_date: 2010-06-15T11:03:02Z [Term] id: PO:0025068 name: tuber axillary bud meristem namespace: plant_anatomy def: "An axillary bud meristem that is part of a tuber." [POC:curators] comment: As the bud grows, the meristem switches from being an axillary meristem to being a shoot apical meristem. xref: OBO_SF_PO:3016498 is_a: PO:0000232 ! axillary bud meristem relationship: part_of PO:0004543 ! tuber created_by: Ramona creation_date: 2010-06-15T12:59:57Z [Term] id: PO:0025069 name: aerial tuber axillary bud meristem namespace: plant_anatomy def: "A tuber axillary bud meristem that is part of an aerial tuber." [POC:curators] is_a: PO:0025068 ! tuber axillary bud meristem relationship: part_of PO:0004548 ! aerial tuber created_by: Ramona creation_date: 2010-06-15T01:03:59Z [Term] id: PO:0025070 name: subterranean tuber axillary bud meristem namespace: plant_anatomy def: "A tuber axillary bud meristem that is part of a subterranean tuber." [POC:curators] is_a: PO:0025068 ! tuber axillary bud meristem relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-06-15T01:03:59Z [Term] id: PO:0025071 name: terminal reproductive bud namespace: plant_anatomy def: "A terminal bud that develops into a reproductive structure." [POC:curators] xref: OBO_SF_PO:3020771 is_a: PO:0004713 ! terminal bud is_a: PO:0025084 ! reproductive bud created_by: cooperl creation_date: 2010-06-24T01:09:49Z [Term] id: PO:0025072 name: axillary reproductive bud namespace: plant_anatomy def: "An axillary bud that develops into a reproductive structure." [POC:curators] xref: OBO_SF_PO:3020771 is_a: PO:0004709 ! axillary bud is_a: PO:0025084 ! reproductive bud created_by: cooperl creation_date: 2010-06-24T01:29:20Z [Term] id: PO:0025073 name: branch namespace: plant_anatomy def: "A shoot axis that develops from an axillary meristem or from equal divisions of the shoot apical meristem." [POC:curators] comment: Branches arise from axillary meristems in vascular plants and from divisions of the shoot apical meristem in non-vascular plants. subset: TraitNet synonym: "higher order axis" NARROW [] synonym: "secondary axis" NARROW [] synonym: "tertiary axis" NARROW [] synonym: "twig" NARROW [] is_a: PO:0025029 ! shoot axis created_by: Ramona creation_date: 2010-07-01T04:21:46Z [Term] id: PO:0025074 name: embryo sac namespace: plant_anatomy def: "A megagametophyte that is located in an ovule in an ovary." [POC:curators] comment: Produces an embryo sac egg cell. subset: Angiosperm is_a: PO:0025279 ! megagametophyte relationship: develops_from PO:0020019 ! megaspore created_by: Ramona creation_date: 2010-07-01T02:50:36Z [Term] id: PO:0025075 name: non-vascular leaf namespace: plant_anatomy def: "A leaf in a non-vascular plant." [POC:curators] comment: Include moss and liverwort leaves. Occurs in the gametophytic phase of a plant life cycle. subset: Bryophytes subset: TraitNet synonym: "gametophyll" EXACT [] synonym: "gametophyte leaf" EXACT [] synonym: "gametophytic leaf" EXACT [] synonym: "non-vascular leaflet" RELATED [] synonym: "phyllid" EXACT [] synonym: "phyllidium" EXACT [] is_a: PO:0025034 ! leaf relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2010-07-12T01:31:59Z [Term] id: PO:0025076 name: axillary strobilus bud namespace: plant_anatomy def: "An axillary reproductive bud that develops into a strobilus." [POC:curators] is_a: PO:0025072 ! axillary reproductive bud is_a: PO:0025085 ! strobilus bud created_by: Ramona creation_date: 2010-07-12T02:30:24Z [Term] id: PO:0025077 name: terminal strobilus bud namespace: plant_anatomy def: "A terminal reproductive bud that develops into a strobilus." [POC:curators] is_a: PO:0025071 ! terminal reproductive bud is_a: PO:0025085 ! strobilus bud created_by: Ramona creation_date: 2010-07-12T02:31:42Z [Term] id: PO:0025078 name: placenta namespace: plant_anatomy def: "A portion of plant tissue to which ovules or seeds are attached." [ISBN:0-7167-1007-2] synonym: "portion of placenta tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2010-07-13T04:36:23Z [Term] id: PO:0025079 name: aerial tuber axillary shoot namespace: plant_anatomy def: "An axillary shoot that develops from an aerial tuber axillary bud." [POC:curators] is_a: PO:0025003 ! tuber axillary shoot relationship: part_of PO:0004548 ! aerial tuber created_by: Ramona creation_date: 2010-09-16T03:18:48Z [Term] id: PO:0025080 name: branch internode namespace: plant_anatomy def: "A shoot internode that is part of a branch." [POC:curators] is_a: PO:0005005 ! shoot internode relationship: part_of PO:0025073 ! branch created_by: Ramona creation_date: 2010-07-16T10:12:21Z [Term] id: PO:0025081 name: subterranean tuber axillary shoot namespace: plant_anatomy def: "An axillary shoot that develops from a subterranean tuber axillary bud." [POC:curators] comment: See also subterranean tuber axillary bud (PO:0025042). subset: Potato synonym: "tuber sprout" EXACT [] is_a: PO:0025003 ! tuber axillary shoot relationship: part_of PO:0004547 ! subterranean tuber created_by: Ramona creation_date: 2010-09-16T03:18:48Z [Term] id: PO:0025082 name: reproductive shoot system namespace: plant_anatomy def: "A shoot system in the sporophytic phase that has as part at least one sporangium." [POC:curators] subset: TraitNet is_a: PO:0009006 ! shoot system created_by: Ramona creation_date: 2010-09-17T09:49:10Z [Term] id: PO:0025083 name: strobilus namespace: plant_anatomy def: "A reproductive shoot system consisting of a number of modified leaves (sporophylls) or ovule-bearing scales grouped terminally on a stem." [ISBN:0716710072, POC:curators] subset: TraitNet synonym: "cone" RELATED [] is_a: PO:0025082 ! reproductive shoot system created_by: Ramona creation_date: 2010-09-17T09:51:22Z [Term] id: PO:0025084 name: reproductive bud namespace: plant_anatomy def: "A bud that develops into a reproductive shoot system." [POC:curators] subset: TraitNet is_a: PO:0000055 ! bud is_a: PO:0025082 ! reproductive shoot system created_by: Ramona creation_date: 2010-09-17T01:52:05Z [Term] id: PO:0025085 name: strobilus bud namespace: plant_anatomy def: "A bud that develops into a strobilus." [POC:curators] is_a: PO:0025084 ! reproductive bud created_by: Ramona creation_date: 2010-09-17T01:54:02Z [Term] id: PO:0025086 name: Poaceae gynoecium ridge namespace: plant_anatomy def: "A gynoecium ridge that is a Poaceae gynoecium in the early stages of development and is characterized as a ridge on the abaxial surface of the Poaceae floret meristem." [PMID:10077498] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. subset: Maize subset: Poaceae synonym: "Poaceae gynoecial ridge" EXACT [] synonym: "Poaceae stylar ridge" EXACT [] is_a: PO:0006384 ! Poaceae gynoecium is_a: PO:0025088 ! gynoecium ridge created_by: Ramona creation_date: 2010-10-25T02:21:15Z [Term] id: PO:0025087 name: Zea gynoecium ridge namespace: plant_anatomy def: "A Poaceae gynoecium ridge that is a gynoecium of an ear floret in the early stages of development and is characterized as a ridge on the abaxial surface of the ear floret." [POC:curators] comment: This term has multiple inheritance because describes an entity at a certain stage in its\ndevelopment. synonym: "Zea gynoecial ridge" EXACT [] synonym: "Zea stylar ridge" EXACT [ISBN-13:978-0387947358 "Chang and Pareddy chapter"] is_a: PO:0006365 ! gynoecium of ear floret is_a: PO:0025086 ! Poaceae gynoecium ridge created_by: Ramona creation_date: 2010-10-25T02:24:40Z [Term] id: PO:0025088 name: gynoecium ridge namespace: plant_anatomy def: "A gynoecium in the early stages of development, characterized as a ridge on the abaxial surface of the floral meristem that develops from a gynoecium primordium." [POC:curators] synonym: "gynoecial ridge" EXACT [] synonym: "stylar ridge" EXACT [] is_a: PO:0009062 ! gynoecium created_by: Ramona creation_date: 2010-10-27T09:19:35Z [Term] id: PO:0025092 name: dehiscence zone namespace: plant_anatomy def: "A portion of plant tissue that is part of a plant structure and consists of a narrow band of cells that undergoes dehiscence upon maturation of the structure." [POC:curators] xref: GO:0009900 "dehiscence" is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2010-10-27T11:07:17Z [Term] id: PO:0025093 name: spore capsule annulus namespace: plant_anatomy def: "A dehiscence zone that is part of a spore capsule." [POC:curators] comment: Found in bryophytes. The capsule annulus is located at the base of an operculum. Upon capsule maturation, cell separation in the annulus allows the operculum to separate from the capsule, aiding in spore dispersal. subset: Bryophytes synonym: "capsule dehiscence zone" EXACT [] is_a: PO:0025092 ! dehiscence zone relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2010-10-27T11:16:33Z [Term] id: PO:0025094 name: sporangium namespace: plant_anatomy alt_id: PO:0025232 def: "A plant organ in which spores are produced." [ISBN:0716710072, POC:curators] comment: In bryophytes, particularly in mosses, a sporangium is referred to as a capsule. In seed plants, a sporangium is located in a sporophyll. In pteridophytes, a sporangium is located on the surface of a sporophyll or fertile leaf or borne on a sporangiophore. May be unicellular in some algae. subset: Potato subset: TraitNet synonym: "moss capsule" EXACT [] synonym: "sporangia" EXACT Plural [] synonym: "spore capsule" EXACT [] xref: OBO_SF_PO:3132600 xref: OBO_SF_PO:3140824 is_a: PO:0009008 ! plant organ created_by: Ramona creation_date: 2010-10-27T11:28:21Z [Term] id: PO:0025095 name: root parenchyma namespace: plant_anatomy def: "A portion of parenchyma tissue that is part of a root." [POC:curators] is_a: PO:0005421 ! parenchyma relationship: part_of PO:0009005 ! root created_by: Ramona creation_date: 2010-10-28T05:14:26Z [Term] id: PO:0025096 name: carpel epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a carpel." [POC:rw] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009030 ! carpel relationship: part_of PO:0009030 ! carpel created_by: Ramona creation_date: 2010-12-17T12:36:46Z [Term] id: PO:0025097 name: stamen epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a stamen." [POC:rw] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009029 ! stamen relationship: part_of PO:0009029 ! stamen created_by: Ramona creation_date: 2010-12-17T12:36:46Z [Term] id: PO:0025098 name: bract trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a bract epidermis." [POC:rw] is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0025158 ! bract epidermis created_by: Ramona creation_date: 2010-12-17T02:04:06Z [Term] id: PO:0025099 name: embryo plant structure namespace: plant_anatomy def: "A plant structure that is part of an embryo." [POC:curators] comment: Includes plant structures that only occur in embryos (such as suspensor) as well as plant structures that are part of an embryo when a plant is in the embryonic phase (such as embryonic radicle). synonym: "embryonic plant structure" EXACT [] xref: OBO_SF_PO:3132547 xref: OBO_SF_PO:3293758 is_a: PO:0009011 ! plant structure intersection_of: PO:0009011 ! plant structure intersection_of: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2010-11-05T01:36:24Z [Term] id: PO:0025100 name: shoot internode elongation zone namespace: plant_anatomy def: "A plant axis elongation zone that is part of a shoot axis internode." [POC:rw] is_a: PO:0025180 ! plant axis elongation zone relationship: part_of PO:0005005 ! shoot internode created_by: Ramona creation_date: 2011-01-03T11:39:43Z [Term] id: PO:0025101 name: branch internode elongation zone namespace: plant_anatomy def: "A shoot axis internode elongation zone that is part of a branch internode." [POC:rw] is_a: PO:0025100 ! shoot internode elongation zone relationship: part_of PO:0025080 ! branch internode created_by: Ramona creation_date: 2011-01-03T11:43:48Z [Term] id: PO:0025102 name: shoot internode differentiation zone namespace: plant_anatomy def: "A plant axis differentiation zone that is part of a shoot axis." [POC:rw] is_a: PO:0025119 ! plant axis differentiation zone relationship: part_of PO:0005005 ! shoot internode created_by: Ramona creation_date: 2011-01-03T12:05:20Z [Term] id: PO:0025103 name: branch internode differentiation zone namespace: plant_anatomy def: "A shoot internode differentiation zone that is part of a branch internode." [POC:rw] is_a: PO:0025102 ! shoot internode differentiation zone relationship: part_of PO:0025080 ! branch internode created_by: Ramona creation_date: 2011-01-03T12:06:50Z [Term] id: PO:0025104 name: first order inflorescence axis namespace: plant_anatomy def: "An inflorescence axis that is the primary or main axis of an inflorescence." [POC:rw] comment: A first order inflorescence axis consists of either a peduncle alone or a peduncle plus its continuation, depending on the form of the inflorescence. subset: Angiosperm synonym: "inflorescence rachis" EXACT [] synonym: "primary inflorescence axis" EXACT [] is_a: PO:0020122 ! inflorescence axis relationship: has_part PO:0009053 ! peduncle created_by: Ramona creation_date: 2011-01-05T08:41:49Z [Term] id: PO:0025105 name: forth order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a third order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:56:27Z [Term] id: PO:0025106 name: fifth order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a forth order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025107 name: sixth order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a fifth order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025108 name: seventh order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a sixth order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025109 name: eighth order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a seventh order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025110 name: ninth order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from an eighth order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025111 name: tenth or higher order inflorescence axis namespace: plant_anatomy def: "An inflorescence branch arising from a ninth or higher order inflorescence axis." [POC:rw] is_a: PO:0009081 ! inflorescence branch created_by: Ramona creation_date: 2011-01-05T08:57:49Z [Term] id: PO:0025112 name: second order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a first order infructescence axis." [POC:rw] synonym: "primary infructescence branch" EXACT [] xref: OBO_SF_PO:3150504 is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025113 name: third order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a second order infructescence axis." [POC:rw] synonym: "secondary infructescence branch" EXACT [] xref: OBO_SF_PO:3150504 is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025114 name: forth order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a third order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025115 name: fifth order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a forth order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025116 name: sixth order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a fifth order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025117 name: plant anatomical space namespace: plant_anatomy def: "An anatomical space that is part of a plant." [CARO:0000005 "anatomical space", POC:curators] comment: CARO:0000005 anatomical space is defined as: Non-material anatomical entity of three dimensions, that is generated by morphogenetic or other physiologic processes; is surrounded by one or more anatomical structures; contains one or more organism substances or anatomical structures. is_a: PO:0025131 ! plant anatomical entity created_by: Ramona creation_date: 2010-11-10T11:57:16Z [Term] id: PO:0025118 name: anther pore namespace: plant_anatomy def: "A plant anatomical space that is a pore at the apex of an anther." [POC:rw] comment: Pollen may be released through the anther pore. is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0009066 ! anther created_by: Ramona creation_date: 2010-12-02T07:41:14Z [Term] id: PO:0025119 name: plant axis differentiation zone namespace: plant_anatomy def: "A cardinal organ part that is part of a plant axis and is located behind the elongation zone and contains cells that are differentiating into their final form and function." [POC:curators] comment: Primary, not secondary, tissue differentiation occurs in a differentiation zone. is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025004 ! plant axis created_by: Ramona creation_date: 2010-12-02T09:04:09Z [Term] id: PO:0025120 name: antheridium sperm cell namespace: plant_anatomy def: "A plant sperm cell that is produced by and located in an antheridium." [POC:curators] comment: Antheridial sperm cells are motile and lack a plasma membrane. subset: Bryophytes subset: Pteridophytes synonym: "antheridial sperm cell" EXACT [] synonym: "spermatazoid" EXACT [] is_a: PO:0000084 ! plant sperm cell relationship: part_of PO:0025125 ! antheridium created_by: Ramona creation_date: 2010-11-15T08:05:46Z [Term] id: PO:0025121 name: pollen sperm cell namespace: plant_anatomy def: "A plant sperm cell that is produced by and located in a pollen grain." [ISSN:1040-2519 "Russell, 1991 Annual Review of Plant Physiology and Plant Molecular Biology, 42, 189-204", POC:curators] comment: Pollen sperm cells are structurally simple, usually non-motile cells that may contain a normal complement of cellular organelles, including heritable cytoplasmic organelles such as mitochondria and, in some plants, plastids, but lack a cell wall. In seed plants, pollen sperm cells are usually two in number. In Angiosperms, during double fertilization, one fuses with the egg cell to produce a zygote while another fuses with the two polar nuclei of the central cell to give rise to endosperm. subset: Angiosperm subset: Gymnosperms is_a: PO:0000084 ! plant sperm cell relationship: part_of PO:0025281 ! pollen created_by: Ramona creation_date: 2010-11-15T08:05:46Z [Term] id: PO:0025122 name: archegonium egg cell namespace: plant_anatomy def: "A plant egg cell that is produced by and located in an archegonium." [POC:curators] subset: Bryophytes subset: Gymnosperms subset: Pteridophytes synonym: "archegonial egg call" EXACT [] is_a: PO:0020094 ! plant egg cell relationship: part_of PO:0025126 ! archegonium created_by: Ramona creation_date: 2010-11-15T08:14:32Z [Term] id: PO:0025123 name: embryo sac egg cell namespace: plant_anatomy def: "A plant egg cell that is produced by and located in an embryo sac." [POC:curators] subset: Angiosperm is_a: PO:0020094 ! plant egg cell relationship: part_of PO:0020096 ! egg apparatus created_by: Ramona creation_date: 2010-11-15T08:14:32Z [Term] id: PO:0025124 name: plant gametangium namespace: plant_anatomy def: "A plant organ that produces one or more gametes that are located in it and is part of a whole plant in the gametophytic phase." [POC:curators] subset: Bryophytes subset: Gymnosperms subset: Pteridophytes is_a: PO:0009008 ! plant organ created_by: Ramona creation_date: 2010-11-15T08:57:32Z [Term] id: PO:0025125 name: antheridium namespace: plant_anatomy def: "A plant gametangium that produces antheridium sperm cells that are located in it." [POC:curators] comment: An antheridium has a sterile jacket layer that does not produce sperm cells. subset: Bryophytes subset: Pteridophytes is_a: PO:0025124 ! plant gametangium created_by: Ramona creation_date: 2010-11-15T08:58:31Z [Term] id: PO:0025126 name: archegonium namespace: plant_anatomy def: "A plant gametangium that produces an archegonium egg cell that is located in it." [POC:curators] subset: Bryophytes subset: Gymnosperms subset: Pteridophytes synonym: "archegonia" EXACT Plural [] is_a: PO:0025124 ! plant gametangium created_by: Ramona creation_date: 2010-11-15T08:58:31Z [Term] id: PO:0025127 name: primordium namespace: plant_anatomy def: "A portion of plant tissue that differentiates and develops from meristem tissue into a new plant structure." [POC:curators] comment: The primordium is the first distinct form in the development of a plant structure. synonym: "portion of primordial tissue" EXACT [] synonym: "portion of primordium tissue" EXACT [] is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2010-11-15T09:10:22Z [Term] id: PO:0025128 name: phyllome primordium namespace: plant_anatomy def: "A primordium that will develop into a phyllome." [POC:rw] is_a: PO:0025127 ! primordium created_by: Ramona creation_date: 2010-11-15T09:27:11Z [Term] id: PO:0025129 name: petiole lamina namespace: plant_anatomy def: "A lamina that is part of a petiole." [POC:curators] comment: The entire petiole may be laminar, or the petiole may be more or less rounded in cross section with laminar extensions. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: Musa synonym: "petiole wing" NARROW [CO_125:0000005] is_a: PO:0020039 ! leaf lamina relationship: part_of PO:0020038 ! petiole created_by: Ramona creation_date: 2010-11-15T10:28:38Z [Term] id: PO:0025130 name: cigar leaf namespace: plant_anatomy def: "A leaf near the apex of a stem that is still rolled into a cylinder." [POC:curators] comment: Describes the phenotype of a vascular leaf during a leaf development phase in Musa and other monocots. subset: Musa xref: CO_125:0000008 is_a: PO:0009025 ! vascular leaf created_by: Ramona creation_date: 2010-11-15T11:29:28Z [Term] id: PO:0025131 name: plant anatomical entity namespace: plant_anatomy def: "An anatomical entity that is or was part of a plant." [CARO:0000000 "anatomical entity", POC:curators] comment: Includes both material entities such as plant structures and immaterial entities such as plant anatomical spaces. CARO:0000000 anatomical entity is defined as: Biological entity that is either an individual member of a biological species or constitutes the structural organization of an individual member of a biological species. xref: OBO_SF_PO:3115810 created_by: Ramona creation_date: 2010-11-15T11:41:38Z [Term] id: PO:0025132 name: canal namespace: plant_anatomy def: "A plant anatomical space that is either a groove on the surface or a tube in the interior of a plant structure." [POC:curators] comment: May be cylindrical (PATO:0001203) in shape, with a circular, D-shaped or other irregularly-shaped cross-section. is_a: PO:0025117 ! plant anatomical space created_by: Ramona creation_date: 2010-11-15T11:47:42Z [Term] id: PO:0025133 name: petiole canal namespace: plant_anatomy def: "A canal that is part of a petiole." [POC:curators] comment: May occur on the surface or be internal. subset: Musa is_a: PO:0025132 ! canal relationship: part_of PO:0020038 ! petiole created_by: Ramona creation_date: 2010-11-15T11:54:00Z [Term] id: PO:0025134 name: inflorescence branch crown namespace: plant_anatomy def: "A shoot system that forms the basal part of an inflorescence to which the pedicels are attached and in which the internodes do not elongate, giving the appearance of a ridge of raised tissue." [POC:curators] subset: Musa synonym: "banana crown" NARROW [] synonym: "Musa crown" NARROW [CO_125:0000023] xref: OBO_SF_PO:3147067 is_a: PO:0009006 ! shoot system relationship: part_of PO:0009049 ! inflorescence created_by: Ramona creation_date: 2010-11-15T12:54:56Z [Term] id: PO:0025135 name: cigar leaf lamina abaxial epidermis namespace: plant_anatomy def: "A portion of leaf lamina abaxial epidermis that covers the abaxial surface of a cigar leaf." [CGP:curators, POC:rw] synonym: "cigar leaf dorsal surface" EXACT [CO_125:0000017] is_a: PO:0000049 ! leaf lamina abaxial epidermis relationship: part_of PO:0025130 ! cigar leaf created_by: Ramona creation_date: 2010-11-15T12:05:45Z [Term] id: PO:0025136 name: free tepal namespace: plant_anatomy def: "A tepal that is separate from all other tepals." [POC:phenotype] comment: This is a phenotype that is a cross-product of PO:0025136 (tepal) and PATO:0001505 (separated from). subset: Musa xref: CO_125:0000020 is_a: PO:0009033 ! tepal disjoint_from: PO:0025137 ! fused tepal created_by: Ramona creation_date: 2010-11-15T01:06:51Z [Term] id: PO:0025137 name: fused tepal namespace: plant_anatomy def: "A tepal that is fused to another tepal." [POC:phenotype] comment: May be fused to two tepals (one on either side). This is a phenotype that is a cross-product of PO:0025136 (tepal) and PATO:0000642 (fused with). subset: Musa is_a: PO:0009033 ! tepal disjoint_from: PO:0025136 ! free tepal relationship: part_of PO:0025138 ! fused collective tepal structure created_by: Ramona creation_date: 2010-11-15T01:12:18Z [Term] id: PO:0025138 name: fused collective tepal structure namespace: plant_anatomy def: "A collective tepal structure that has as parts at least two fused tepals." [POC:phenotype] comment: This is a phenotype that is a cross-product of PO:0025021 (collective tepal structure) and PATO:0000642 (fused with). In Musa, there are there are 5 fused tepals which form 3 major lobes and 2 minor lobes. subset: Musa synonym: "compound tepal" RELATED [CO_125:0000021] synonym: "syntepalous perianth" EXACT [] is_a: PO:0025021 ! collective tepal structure created_by: Ramona creation_date: 2010-11-15T01:18:23Z [Term] id: PO:0025139 name: phyllome apex namespace: plant_anatomy def: "The apical portion of a phyllome." [POC:rw] comment: It is not precisely defined how far toward the base from the tip a phyllome apex extends. For the apical most portion of a phyllome, use the term phyllome tip. is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0006001 ! phyllome created_by: Ramona creation_date: 2010-11-15T01:25:20Z [Term] id: PO:0025140 name: phyllome base namespace: plant_anatomy def: "The basal part of a phyllome, where it attaches to a shoot axis." [POC:rw] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0006001 ! phyllome created_by: Ramona creation_date: 2010-11-15T01:25:26Z [Term] id: PO:0025141 name: phyllome tip namespace: plant_anatomy def: "The apical most portion of a phyllome apex." [POC:rw] comment: This term is to be used for only the apical most portion of a phyllome. For a larger area, use the term phyllome apex. Use this term when describing the shape of a phyllome tip. is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025139 ! phyllome apex created_by: Ramona creation_date: 2010-11-15T01:34:53Z [Term] id: PO:0025142 name: leaf tip namespace: plant_anatomy def: "A phyllome tip that is part of a leaf apex." [POC:rw] comment: This term is to be used for only the apical most portion of a leaf. For a larger area, use the term leaf apex. Use this term when describing the shape of a leaf tip. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:3298269 is_a: PO:0025141 ! phyllome tip relationship: part_of PO:0020137 ! leaf apex created_by: Ramona creation_date: 2010-11-15T01:36:13Z [Term] id: PO:0025143 name: tepal apex namespace: plant_anatomy def: "A phyllome apex that is part of a tepal." [POC:rw] comment: It is not precisely defined how far toward the base from the tip a tepal apex extends. For the apical most portion of a tepal, use the term tepal tip. subset: Musa synonym: "compound tepal lobe" NARROW [CO_125:0000031] synonym: "free tepal apex" NARROW [CO_125:0000025] is_a: PO:0025139 ! phyllome apex relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-11-15T01:42:08Z [Term] id: PO:0025144 name: petal apex namespace: plant_anatomy def: "A phyllome apex that is part of a petal." [POC:rw] comment: It is not precisely defined how far toward the base from the tip a petal apex extends. For the apical most portion of a petal, use the term petal tip. is_a: PO:0025139 ! phyllome apex relationship: part_of PO:0009032 ! petal created_by: Ramona creation_date: 2010-11-15T01:43:22Z [Term] id: PO:0025145 name: sepal apex namespace: plant_anatomy def: "A phyllome apex that is part of a sepal." [POC:rw] comment: It is not precisely defined how far toward the base from the tip a sepal apex extends. For the apical most portion of a sepal, use the term sepal tip. is_a: PO:0025139 ! phyllome apex relationship: part_of PO:0009031 ! sepal created_by: Ramona creation_date: 2010-11-15T01:43:23Z [Term] id: PO:0025146 name: petal base namespace: plant_anatomy def: "A phyllome base that is part of a petal." [POC:rw] is_a: PO:0025140 ! phyllome base relationship: part_of PO:0009032 ! petal created_by: Ramona creation_date: 2010-11-15T01:47:57Z [Term] id: PO:0025147 name: sepal base namespace: plant_anatomy def: "A phyllome base that is part of a sepal." [POC:rw] is_a: PO:0025140 ! phyllome base relationship: part_of PO:0009031 ! sepal created_by: Ramona creation_date: 2010-11-15T01:47:58Z [Term] id: PO:0025148 name: tepal base namespace: plant_anatomy def: "A phyllome base that is part of a tepal." [POC:rw] is_a: PO:0025140 ! phyllome base relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-11-15T01:47:58Z [Term] id: PO:0025149 name: petal tip namespace: plant_anatomy def: "A phyllome tip that is part of a petal apex." [POC:rw] comment: This term is to be used for only the apical most portion of a petal. For a larger area, use the term petal apex. Use this term when describing the shape of a petal tip. is_a: PO:0025141 ! phyllome tip relationship: part_of PO:0025144 ! petal apex created_by: Ramona creation_date: 2010-11-15T01:49:36Z [Term] id: PO:0025150 name: sepal tip namespace: plant_anatomy def: "A phyllome tip that is part of a sepal apex." [POC:rw] comment: This term is to be used for only the apical most portion of a sepal. For a larger area, use the term sepal apex. Use this term when describing the shape of a sepal tip. is_a: PO:0025141 ! phyllome tip relationship: part_of PO:0025145 ! sepal apex created_by: Ramona creation_date: 2010-11-15T01:49:36Z [Term] id: PO:0025151 name: tepal tip namespace: plant_anatomy def: "A phyllome tip that is part of a tepal apex." [POC:rw] comment: This term is to be used for only the apical most portion of a tepal. For a larger area, use the term tepal apex. Use this term when describing the shape of a tepal tip. is_a: PO:0025141 ! phyllome tip relationship: part_of PO:0025143 ! tepal apex created_by: Ramona creation_date: 2010-11-15T01:49:37Z [Term] id: PO:0025152 name: peduncle epidermis namespace: plant_anatomy def: "A portion of branch epidermis that is part of a peduncle." [POC:curators] subset: Musa synonym: "peduncle surface" RELATED [CO_125:0000036] is_a: PO:0025179 ! branch epidermis relationship: part_of PO:0009053 ! peduncle created_by: Ramona creation_date: 2010-11-15T02:08:11Z [Term] id: PO:0025153 name: peduncle trichome namespace: plant_anatomy def: "A shoot axis trichome that is part of a peduncle epidermis." [POC:rw] subset: Musa synonym: "peduncle hair" EXACT [CO_125:0000051] is_a: PO:0005003 ! shoot axis trichome relationship: part_of PO:0025152 ! peduncle epidermis created_by: Ramona creation_date: 2010-11-15T02:14:05Z [Term] id: PO:0025154 name: bract apex namespace: plant_anatomy def: "A phyllome apex that is part of a bract." [POC:rw] comment: It is not precisely defined how far toward the base from the tip a bract apex extends. For the apical most portion of a bract, use the term bract tip. subset: Musa xref: CO_125:0000053 is_a: PO:0025139 ! phyllome apex relationship: part_of PO:0009055 ! bract created_by: Ramona creation_date: 2010-11-15T02:21:05Z [Term] id: PO:0025155 name: bract base namespace: plant_anatomy def: "A phyllome base that is part of a bract." [POC:rw] subset: Musa xref: CO_125:0000056 is_a: PO:0025140 ! phyllome base relationship: part_of PO:0009055 ! bract created_by: Ramona creation_date: 2010-11-15T02:22:45Z [Term] id: PO:0025156 name: bract tip namespace: plant_anatomy def: "A phyllome tip that is part of a bract apex." [POC:rw] comment: This term is to be used for only the apical most portion of a bract. For a larger area, use the term bract apex. Use this term when describing the shape of a bract tip. is_a: PO:0025141 ! phyllome tip created_by: Ramona creation_date: 2010-11-15T02:23:56Z [Term] id: PO:0025157 name: phyllome epidermis namespace: plant_anatomy def: "A portion of shoot epidermis that is part of a phyllome." [POC:curators] is_a: PO:0006035 ! shoot epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0006001 ! phyllome relationship: part_of PO:0006001 ! phyllome created_by: Ramona creation_date: 2010-11-15T02:32:53Z [Term] id: PO:0025158 name: bract epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a bract." [POC:rw] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009055 ! bract relationship: part_of PO:0009055 ! bract created_by: Ramona creation_date: 2010-11-15T02:34:14Z [Term] id: PO:0025159 name: bract abaxial epidermis namespace: plant_anatomy def: "A portion of bract epidermis that covers the abaxial/lower surface of a bract." [POC:rw] subset: Musa synonym: "bract external face" EXACT [CO_125:0000054] is_a: PO:0025158 ! bract epidermis created_by: Ramona creation_date: 2010-11-15T02:35:37Z [Term] id: PO:0025160 name: bract adaxial epidermis namespace: plant_anatomy def: "A portion of bract epidermis that covers the adaxial/upper surface of a bract." [POC:rw] subset: Musa synonym: "bract internal face" EXACT [CO_125:0000055] is_a: PO:0025158 ! bract epidermis created_by: Ramona creation_date: 2010-11-15T02:35:37Z [Term] id: PO:0025161 name: portion of plant substance namespace: plant_anatomy def: "A portion of organism substance that is or was part of a plant." [CARO:0000004 "portion of organism substance", POC:curators] comment: Can include substances like latex, xylem sap, phloem sap, resin, mucilage, oil, cuticle, cutin, sporopollenin. CARO:0000004 portion of organism substance is defined as: Material anatomical entity in a gaseous, liquid, semisolid or solid state; produced by anatomical structures or derived from inhaled and ingested substances that have been modified by anatomical structures as they pass through the body. For plants, the word "body" refers to a whole plant or part thereof. is_a: PO:0025131 ! plant anatomical entity created_by: Ramona creation_date: 2010-11-18T07:32:44Z [Term] id: PO:0025162 name: multicellular trichome namespace: plant_anatomy def: "A portion of plant tissue that forms a non-sclerified outgrowth from the epidermis." [POC:curators] comment: Can vary in size and complexity. May contain a secretory gland. synonym: "non-glandular multicelluar trichome" NARROW [] synonym: "non-secretory multicellular trichome" NARROW [] is_a: PO:0000282 ! trichome is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0004013 ! epidermal cell created_by: Ramona creation_date: 2010-11-18T07:46:34Z [Term] id: PO:0025163 name: multicellular trichome branch cell namespace: plant_anatomy def: "A trichome cell that forms a branch of a multicellular trichome." [POC:curators] comment: For branches of a unicellular trichome, see unicellular trichome branch (GO:0090405) in GO. is_a: PO:0008030 ! trichome cell relationship: part_of PO:0025162 ! multicellular trichome created_by: Ramona creation_date: 2010-11-18T08:01:29Z [Term] id: PO:0025164 name: root epidermal cell namespace: plant_anatomy def: "An epidermal cell that is part of a root epidermis." [POC:curators] is_a: PO:0004013 ! epidermal cell relationship: part_of PO:0006036 ! root epidermis created_by: Ramona creation_date: 2010-11-18T10:29:44Z [Term] id: PO:0025165 name: shoot epidermal cell namespace: plant_anatomy def: "An epidermal cell that is part of a shoot epidermis." [POC:curators] is_a: PO:0004013 ! epidermal cell relationship: part_of PO:0006035 ! shoot epidermis created_by: Ramona creation_date: 2010-11-18T10:29:44Z [Term] id: PO:0025166 name: papilla cell namespace: plant_anatomy def: "An epidermal pavement cell with a short protuberance." [POC:curators] comment: See plant cell papilla (GO:0090395) for the subcellular component papilla. xref: OBO_SF_PO:3115430 is_a: PO:0000332 ! epidermal pavement cell created_by: Ramona creation_date: 2010-11-18T05:25:37Z [Term] id: PO:0025167 name: leaf papilla cell namespace: plant_anatomy def: "A papilla cell that is part of a leaf epidermis." [POC:curators] comment: See leaf papilla (GO:0090396) for the subcellular component leaf papilla. If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:3115430 is_a: PO:0025166 ! papilla cell relationship: part_of PO:0006016 ! leaf epidermis created_by: Ramona creation_date: 2010-11-18T05:37:23Z [Term] id: PO:0025168 name: stigma papilla cell namespace: plant_anatomy def: "A papilla cell that is part of a stigma epidermis." [POC:curators] comment: See stigma papilla (GO:0090397) for the subcellular component stigma papilla. xref: OBO_SF_PO:3115430 is_a: PO:0025166 ! papilla cell relationship: part_of PO:0006061 ! stigma epidermis created_by: Ramona creation_date: 2010-11-18T05:37:23Z [Term] id: PO:0025169 name: prickle namespace: plant_anatomy def: "A portion of epidermis that is a sclerified outgrowth." [POC:curators] comment: Often found on stems and leaves. xref: OBO_SF_PO:3115540 is_a: PO:0005679 ! epidermis created_by: Ramona creation_date: 2010-11-18T07:47:30Z [Term] id: PO:0025170 name: root prickle namespace: plant_anatomy def: "A prickle that is part of a root." [POC:curators] xref: OBO_SF_PO:3115540 is_a: PO:0025169 ! prickle relationship: part_of PO:0009005 ! root created_by: Ramona creation_date: 2010-11-18T07:47:30Z [Term] id: PO:0025171 name: shoot axis prickle namespace: plant_anatomy def: "A prickle that is part of a shoot axis." [POC:curators] xref: OBO_SF_PO:3115540 is_a: PO:0025169 ! prickle relationship: part_of PO:0025029 ! shoot axis created_by: Ramona creation_date: 2010-11-18T07:47:30Z [Term] id: PO:0025172 name: thorn namespace: plant_anatomy def: "A branch that is a sclerified, pointed outgrowth." [POC:curators] comment: A thorn is a short, pointed (PATO:0002258) woody structure, may be branched. xref: OBO_SF_PO:3115545 is_a: PO:0025073 ! branch created_by: Ramona creation_date: 2010-11-18T08:07:48Z [Term] id: PO:0025173 name: leaf spine namespace: plant_anatomy def: "A leaf that is a sclerified and pointed and lacks a lamina." [POC:curators] comment: See also stipule spine (PO:0025174). xref: PATO:0002258 "pointed" is_a: PO:0009025 ! vascular leaf created_by: Ramona creation_date: 2010-11-18T08:10:24Z [Term] id: PO:0025174 name: stipule spine namespace: plant_anatomy def: "A stipule that is sclerified and pointed." [PATO:0002258 "pointed", POC:curators] comment: See also leaf spine (PO:0025173). xref: OBO_SF_PO:3115550 is_a: PO:0020041 ! stipule created_by: Ramona creation_date: 2010-11-18T08:14:18Z [Term] id: PO:0025175 name: leaf prickle namespace: plant_anatomy def: "A prickle that is part of a leaf." [POC:curators] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:3115540 is_a: PO:0006016 ! leaf epidermis is_a: PO:0025169 ! prickle relationship: part_of PO:0025034 ! leaf created_by: Ramona creation_date: 2010-11-22T09:35:01Z [Term] id: PO:0025176 name: stem trichome namespace: plant_anatomy def: "A shoot axis trichome that is part of a stem epidermis." [POC:rw] synonym: "stem hair" EXACT [] is_a: PO:0005003 ! shoot axis trichome relationship: part_of PO:0025178 ! stem epidermis created_by: Ramona creation_date: 2010-11-22T09:54:46Z [Term] id: PO:0025177 name: branch trichome namespace: plant_anatomy def: "A shoot axis trichome that is part of a branch epidermis." [POC:rw] synonym: "branch hair" EXACT [] is_a: PO:0005003 ! shoot axis trichome relationship: part_of PO:0025179 ! branch epidermis created_by: Ramona creation_date: 2010-11-22T09:54:46Z [Term] id: PO:0025178 name: stem epidermis namespace: plant_anatomy def: "A portion of shoot axis epidermis that is part of a stem." [POC:rw] is_a: PO:0000112 ! shoot axis epidermis relationship: part_of PO:0009047 ! stem created_by: Ramona creation_date: 2010-11-22T09:56:21Z [Term] id: PO:0025179 name: branch epidermis namespace: plant_anatomy def: "A portion of shoot axis epidermis that is part of a branch." [POC:rw] is_a: PO:0000112 ! shoot axis epidermis relationship: part_of PO:0025073 ! branch created_by: Ramona creation_date: 2010-11-22T09:58:06Z [Term] id: PO:0025180 name: plant axis elongation zone namespace: plant_anatomy def: "A cardinal organ part that is part of a plant axis that is located directly behind an apical meristem, in which the cells are undergoing longitudinal expansion." [POC:curators] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025004 ! plant axis created_by: Ramona creation_date: 2010-12-03T08:50:10Z [Term] id: PO:0025181 name: root elongation zone namespace: plant_anatomy def: "A plant axis elongation zone that is part of a root tip and located directly behind the root apical meristem." [POC:curators] comment: The root elongation zone is only a few millimeters in length and is the only portion of the root in which cell elongation generally occurs. Root hairs are not yet produced in this region. Primary root tissues begin to differentiate in the root elongation zone. This term replaces elongation zone (PO:0020125). is_a: PO:0025180 ! plant axis elongation zone relationship: part_of PO:0000025 ! root tip created_by: Ramona creation_date: 2010-12-03T08:54:52Z [Term] id: PO:0025182 name: sepal trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a sepal epidermis." [POC:rw] xref: OBO_SF_PO:3112828 is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0006040 ! sepal epidermis created_by: Ramona creation_date: 2010-12-06T01:11:21Z [Term] id: PO:0025183 name: leaf stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a leaf." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "leaf epidermal stomatal complex" EXACT [] synonym: "leaf epidermis stomatal complex" EXACT [] is_a: PO:0006016 ! leaf epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0025034 ! leaf created_by: Ramona creation_date: 2010-12-09T11:47:55Z [Term] id: PO:0025184 name: tepal epidermis namespace: plant_anatomy def: "A portion of phyllome epidermis that is part of a tepal." [POC:rw] is_a: PO:0025157 ! phyllome epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0009033 ! tepal relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-12-06T01:15:36Z [Term] id: PO:0025185 name: leaf lamina stomatal complex namespace: plant_anatomy def: "A leaf stomatal complex that is part of a leaf lamina." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "leaf lamina epidermal stomatal complex" EXACT [] synonym: "leaf lamina epidermis stomatal complex" EXACT [] is_a: PO:0000047 ! leaf lamina epidermis is_a: PO:0025183 ! leaf stomatal complex relationship: part_of PO:0020039 ! leaf lamina created_by: Ramona creation_date: 2010-12-09T11:49:35Z [Term] id: PO:0025186 name: phyllome trichome namespace: plant_anatomy def: "A trichome that is part of a phyllome epidermis." [POC:rw] is_a: PO:0000282 ! trichome created_by: Ramona creation_date: 2010-12-06T01:17:31Z [Term] id: PO:0025187 name: petal trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a petal epidermis." [POC:rw] is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0006041 ! petal epidermis created_by: Ramona creation_date: 2010-12-06T01:18:53Z [Term] id: PO:0025188 name: tepal trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a tepal epidermis." [POC:rw] is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0025184 ! tepal epidermis created_by: Ramona creation_date: 2010-12-06T01:18:53Z [Term] id: PO:0025189 name: petiole stomatal complex namespace: plant_anatomy def: "A leaf stomatal complex that is part of a petiole." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "petiole epidermal stomatal complex" EXACT [] synonym: "petiole epidermis stomatal complex" EXACT [] is_a: PO:0000051 ! petiole epidermis is_a: PO:0025183 ! leaf stomatal complex relationship: part_of PO:0020038 ! petiole created_by: Ramona creation_date: 2010-12-09T11:49:35Z [Term] id: PO:0025190 name: leaf abaxial stomatal complex namespace: plant_anatomy def: "A leaf stomatal complex that is part of a leaf abaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "leaf abaxial epidermal stomatal complex" EXACT [] synonym: "leaf abaxial epidermis stomatal complex" EXACT [] is_a: PO:0025183 ! leaf stomatal complex relationship: part_of PO:0006019 ! leaf abaxial epidermis created_by: Ramona creation_date: 2010-12-17T03:01:55Z [Term] id: PO:0025191 name: leaf adaxial stomatal complex namespace: plant_anatomy def: "A leaf stomatal complex that is part of a leaf adaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. synonym: "leaf adaxial epidermal stomatal complex" EXACT [] synonym: "leaf adaxial epidermis stomatal complex" EXACT [] is_a: PO:0025183 ! leaf stomatal complex relationship: part_of PO:0006018 ! leaf adaxial epidermis created_by: Ramona creation_date: 2010-12-17T03:01:55Z [Term] id: PO:0025192 name: tepal abaxial epidermis namespace: plant_anatomy def: "A portion of tepal epidermis that covers the abaxial/lower surface of a tepal." [POC:rw] is_a: PO:0025184 ! tepal epidermis created_by: Ramona creation_date: 2010-12-20T07:49:04Z [Term] id: PO:0025193 name: tepal adaxial epidermis namespace: plant_anatomy def: "A portion of tepal epidermis that covers the adaxial/upper surface of a tepal." [POC:rw] is_a: PO:0025184 ! tepal epidermis created_by: Ramona creation_date: 2010-12-20T07:49:04Z [Term] id: PO:0025194 name: root nodule meristem namespace: plant_anatomy def: "A root meristem that gives rise to a root nodule." [PMID:1809347, POC:rw] xref: PMID:1809347 is_a: PO:0006085 ! root meristem created_by: Ramona creation_date: 2010-12-09T01:39:55Z [Term] id: PO:0025195 name: pollen tube cell namespace: plant_anatomy def: "A plant cell that develops from a vegetative cell and forms a tubular extension of the pollen grain." [POC:rw] comment: Carries the male gametes to into or near the ovule. May be branched in gymnosperms. See GO for pollen tube (GO:0090406) or pollen tube tip (GO:0090404). xref: OBO_SF_PO:3093226 is_a: PO:0009002 ! plant cell relationship: develops_from PO:0020099 ! vegetative cell created_by: Ramona creation_date: 2010-12-09T02:11:17Z [Term] id: PO:0025196 name: basal endosperm transfer layer namespace: plant_anatomy def: "A portion of plant tissue that is part of an endosperm and is composed of basal endosperm transfer cells." [POC:rw] comment: Involved in transferring nutrients to an embryo. xref: OBO_SF_PO:3132534 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0009089 ! endosperm created_by: Ramona creation_date: 2010-12-09T02:23:04Z [Term] id: PO:0025197 name: stele namespace: plant_anatomy def: "A cardinal organ part that is the central column of a plant axis that consists of the primary vascular tissue and associated ground tissue." [POC:curators] comment: If a pith is present, it is part of the stele, otherwise the stele only includes the primary vascular tissue and the ground tissue that surrounds it. xref: OBO_SF_PO:3080915 is_a: PO:0025001 ! cardinal organ part created_by: Ramona creation_date: 2010-12-09T03:56:19Z [Term] id: PO:0025198 name: shoot axis stele namespace: plant_anatomy def: "A stele that is part of a shoot axis." [POC:rw] is_a: PO:0025197 ! stele relationship: part_of PO:0025029 ! shoot axis created_by: Ramona creation_date: 2010-12-09T03:58:34Z [Term] id: PO:0025199 name: branch stele namespace: plant_anatomy def: "A shoot axis stele that is part of a branch." [POC:rw] is_a: PO:0025198 ! shoot axis stele relationship: part_of PO:0025073 ! branch created_by: Ramona creation_date: 2010-12-09T03:59:35Z [Term] id: PO:0025200 name: stem stele namespace: plant_anatomy def: "A shoot axis stele that is part of a stem." [POC:rw] is_a: PO:0025198 ! shoot axis stele relationship: part_of PO:0009047 ! stem created_by: Ramona creation_date: 2010-12-09T03:59:35Z [Term] id: PO:0025201 name: megasporangium namespace: plant_anatomy def: "A sporangium in which megaspores are produced." [ISBN:0716710072] xref: OBO_SF_PO:3132602 is_a: PO:0025094 ! sporangium created_by: Ramona creation_date: 2010-12-09T04:05:41Z [Term] id: PO:0025202 name: microsporangium namespace: plant_anatomy def: "A sporangium in which microspores are produced." [ISBN:0716710072] xref: OBO_SF_PO:3132609 is_a: PO:0025094 ! sporangium created_by: Ramona creation_date: 2010-12-09T04:05:41Z [Term] id: PO:0025203 name: pericarp vascular bundle namespace: plant_anatomy def: "A vascular bundle that is part of a pericarp." [POC:rw] is_a: PO:0005020 ! vascular bundle relationship: part_of PO:0009084 ! pericarp created_by: Ramona creation_date: 2010-12-17T08:16:40Z [Term] id: PO:0025204 name: rhizome internode namespace: plant_anatomy def: "A shoot axis internode that is part of a rhizome." [POC:rw] xref: OBO_SF_PO:1766539 is_a: PO:0005005 ! shoot internode relationship: part_of PO:0004542 ! rhizome created_by: Ramona creation_date: 2010-12-17T09:22:47Z [Term] id: PO:0025205 name: shoot system vascular system namespace: plant_anatomy def: "A vascular system that is part of a shoot system." [POC:rw] xref: OBO_SF_PO:2285839 is_a: PO:0000034 ! vascular system relationship: part_of PO:0009006 ! shoot system created_by: Ramona creation_date: 2010-12-17T09:34:58Z [Term] id: PO:0025206 name: phyllome vascular system namespace: plant_anatomy def: "A vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a phyllome." [POC:rw] is_a: PO:0000034 ! vascular system relationship: part_of PO:0006001 ! phyllome relationship: part_of PO:0025205 ! shoot system vascular system created_by: Ramona creation_date: 2010-12-17T10:11:07Z [Term] id: PO:0025207 name: tepal vascular system namespace: plant_anatomy def: "A phyllome vascular system that includes the totality of the portions of vascular tissue in their specific arrangement in a tepal." [POC:rw] is_a: PO:0025206 ! phyllome vascular system relationship: part_of PO:0005017 ! flower vascular system relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-12-17T10:28:52Z [Term] id: PO:0025208 name: carpel trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a bract epidermis." [POC:rw] is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0025096 ! carpel epidermis created_by: Ramona creation_date: 2010-12-17T02:04:36Z [Term] id: PO:0025209 name: stamen trichome namespace: plant_anatomy def: "A phyllome trichome that is part of a stamen epidermis." [POC:rw] is_a: PO:0025186 ! phyllome trichome relationship: part_of PO:0025097 ! stamen epidermis created_by: Ramona creation_date: 2010-12-17T02:04:36Z [Term] id: PO:0025210 name: leaf abaxial trichome namespace: plant_anatomy def: "A leaf trichome that is part of a leaf abaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006504 ! leaf trichome relationship: part_of PO:0006019 ! leaf abaxial epidermis created_by: Ramona creation_date: 2010-12-17T02:08:36Z [Term] id: PO:0025211 name: leaf adaxial trichome namespace: plant_anatomy def: "A leaf trichome that is part of a leaf adaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006504 ! leaf trichome relationship: part_of PO:0006018 ! leaf adaxial epidermis created_by: Ramona creation_date: 2010-12-17T02:08:37Z [Term] id: PO:0025212 name: leaf pavement cell namespace: plant_anatomy def: "An epidermal pavement cell that is part of a leaf epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. xref: OBO_SF_PO:3139280 is_a: PO:0000332 ! epidermal pavement cell relationship: part_of PO:0006016 ! leaf epidermis created_by: Ramona creation_date: 2010-12-17T02:47:25Z [Term] id: PO:0025213 name: leaf abaxial pavement cell namespace: plant_anatomy def: "A leaf pavement cell that is part of a leaf abaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025212 ! leaf pavement cell relationship: part_of PO:0006019 ! leaf abaxial epidermis created_by: Ramona creation_date: 2010-12-17T02:52:02Z [Term] id: PO:0025214 name: leaf adaxial pavement cell namespace: plant_anatomy def: "A leaf pavement cell that is part of a leaf adaxial epidermis." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025212 ! leaf pavement cell relationship: part_of PO:0006018 ! leaf adaxial epidermis created_by: Ramona creation_date: 2010-12-17T02:52:02Z [Term] id: PO:0025215 name: phyllome stomatal complex namespace: plant_anatomy def: "A stomatal complex that is part of a phyllome." [POC:rw] synonym: "phyllome epidermal stomatal complex" EXACT [] synonym: "phyllome epidermis stomatal complex" EXACT [] is_a: PO:0002000 ! stomatal complex is_a: PO:0025157 ! phyllome epidermis relationship: part_of PO:0006001 ! phyllome created_by: Ramona creation_date: 2010-12-20T08:23:11Z [Term] id: PO:0025216 name: bract stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a bract." [POC:rw] synonym: "bract epidermal stomatal complex" EXACT [] synonym: "bract epidermis stomatal complex" EXACT [] is_a: PO:0025158 ! bract epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009055 ! bract created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025217 name: carpel stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a carpel." [POC:rw] synonym: "carpel epidermal stomatal complex" EXACT [] synonym: "carpel epidermis stomatal complex" EXACT [] is_a: PO:0025096 ! carpel epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009030 ! carpel created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025218 name: petal stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a petal." [POC:rw] synonym: "petal epidermal stomatal complex" EXACT [] synonym: "petal epidermis stomatal complex" EXACT [] is_a: PO:0006041 ! petal epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009032 ! petal created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025219 name: sepal stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a sepal." [POC:rw] synonym: "sepal epidermal stomatal complex" EXACT [] synonym: "sepal epidermis stomatal complex" EXACT [] is_a: PO:0006040 ! sepal epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009031 ! sepal created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025220 name: stamen stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a stamen." [POC:rw] synonym: "stamen epidermal stomatal complex" EXACT [] synonym: "stamen epidermis stomatal complex" EXACT [] is_a: PO:0025097 ! stamen epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009029 ! stamen created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025221 name: tepal stomatal complex namespace: plant_anatomy def: "A phyllome stomatal complex that is part of a tepal." [POC:rw] synonym: "tepal epidermal stomatal complex" EXACT [] synonym: "tepal epidermis stomatal complex" EXACT [] is_a: PO:0025184 ! tepal epidermis is_a: PO:0025215 ! phyllome stomatal complex relationship: part_of PO:0009033 ! tepal created_by: Ramona creation_date: 2010-12-20T08:27:52Z [Term] id: PO:0025222 name: reproductive shoot apex namespace: plant_anatomy def: "A shoot apex that has as part a reproductive shoot apical meristem." [POC:rw] is_a: PO:0000037 ! shoot apex created_by: Ramona creation_date: 2010-12-20T08:47:03Z [Term] id: PO:0025223 name: vegetative shoot apex namespace: plant_anatomy def: "A shoot apex that has as part a vegetative shoot apical meristem." [POC:rw] is_a: PO:0000037 ! shoot apex created_by: Ramona creation_date: 2010-12-20T08:47:03Z [Term] id: PO:0025224 name: axil namespace: plant_anatomy def: "A plant anatomical space that is the space between a shoot axis and a leaf, bract, or branch that branches from the shoot axis." [POC:curators] is_a: PO:0025117 ! plant anatomical space created_by: Ramona creation_date: 2010-12-20T08:59:45Z [Term] id: PO:0025225 name: bract axil namespace: plant_anatomy def: "An axil that is the space between a shoot axis and a bract that branches from the shoot axis." [POC:rw] is_a: PO:0025224 ! axil created_by: Ramona creation_date: 2010-12-20T09:03:32Z [Term] id: PO:0025226 name: branch axil namespace: plant_anatomy def: "An axil that is the space between a shoot axis and a branch that branches from the shoot axis." [POC:rw] is_a: PO:0025224 ! axil created_by: Ramona creation_date: 2010-12-20T09:03:32Z [Term] id: PO:0025227 name: tetrad of megaspores namespace: plant_anatomy def: "A portion of plant tissue consisting of four megaspores that remained joined together shortly after meiosis. One cell will give rise to a female gametophyte." [POC:rw] comment: Usually only one of the four megaspores develops and the other three die. is_a: PO:0009007 ! portion of plant tissue relationship: develops_from PO:0000431 ! megasporocyte relationship: has_part PO:0020019 ! megaspore created_by: Ramona creation_date: 2010-12-20T09:08:29Z [Term] id: PO:0025228 name: valve namespace: plant_anatomy def: "A cardinal organ part that is a part of a plant structure that splits apart when the structure dehisces." [POC:rw] xref: OBO_SF_PO:3132512 is_a: PO:0025001 ! cardinal organ part created_by: Ramona creation_date: 2010-12-20T09:21:21Z [Term] id: PO:0025229 name: spore capsule valve namespace: plant_anatomy def: "A valve that is a part of a spore capsule that splits apart when the spore capsule dehisces." [POC:rw] comment: Found in bryophytes. A spore capsule may dehisce ongitudinally, forming evenely sized valves, or it may dehisce at the capsule annulus, forming the operculum, which is a specialized type of valve. xref: OBO_SF_PO:3132512 is_a: PO:0025228 ! valve relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2010-12-20T09:25:07Z [Term] id: PO:0025230 name: columella namespace: plant_anatomy def: "A portion of plant tissue that forms the central axis of a plant structure such as a fruit or moss capsule." [POC:curators] synonym: "portion of columella tissue" EXACT [] xref: OBO_SF_PO:3132522 is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2010-12-20T09:32:11Z [Term] id: PO:0025231 name: spore capsule columella namespace: plant_anatomy def: "A columella that forms the central axis of a spore capsule." [POC:rw] comment: Found in bryophytes. xref: OBO_SF_PO:3132522 is_a: PO:0025230 ! columella relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2010-12-20T09:34:34Z [Term] id: PO:0025233 name: portion of embryo plant tissue namespace: plant_anatomy def: "A portion of plant tissue that is part of a plant embryo." [POC:curators] comment: This class is for tissues that only occur as part of an embryo. synonym: "portion of embryonic plant tissue" EXACT [] xref: OBO_SF_PO:3293751 is_a: PO:0009007 ! portion of plant tissue is_a: PO:0025099 ! embryo plant structure intersection_of: PO:0009007 ! portion of plant tissue intersection_of: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2010-12-20T12:27:10Z [Term] id: PO:0025234 name: phyllome stomatal pore namespace: plant_anatomy def: "A stomatal pore that is part of a phyllome stomatal complex." [POC:curators] is_a: PO:0008032 ! stomatal pore relationship: part_of PO:0025215 ! phyllome stomatal complex created_by: Ramona creation_date: 2010-12-29T01:33:50Z [Term] id: PO:0025235 name: leaf stomatal pore namespace: plant_anatomy def: "A phyllome stomatal pore that is part of a leaf stomatal complex." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025234 ! phyllome stomatal pore relationship: part_of PO:0025183 ! leaf stomatal complex created_by: Ramona creation_date: 2010-12-29T01:38:03Z [Term] id: PO:0025236 name: phyllome guard cell namespace: plant_anatomy def: "A guard cell that is part of a phyllome stomatal complex." [POC:curators] is_a: PO:0000293 ! guard cell relationship: part_of PO:0025215 ! phyllome stomatal complex created_by: Ramona creation_date: 2010-12-29T01:40:14Z [Term] id: PO:0025237 name: leaf guard cell namespace: plant_anatomy def: "A phyllome guard cell that is part of a leaf stomatal complex." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025236 ! phyllome guard cell relationship: part_of PO:0025183 ! leaf stomatal complex created_by: Ramona creation_date: 2010-12-29T01:44:27Z [Term] id: PO:0025238 name: abaxial petiole canal namespace: plant_anatomy def: "A petiole canal on the abaxial surface of a petiole." [POC:rw] is_a: PO:0025133 ! petiole canal created_by: Ramona creation_date: 2010-12-30T02:09:39Z [Term] id: PO:0025239 name: adaxial petiole canal namespace: plant_anatomy def: "A petiole canal on the adaxial surface of a petiole." [POC:rw] xref: CO_125:0000012 is_a: PO:0025133 ! petiole canal created_by: Ramona creation_date: 2010-12-30T02:09:39Z [Term] id: PO:0025240 name: second order inflorescence namespace: plant_anatomy def: "A reproductive shoot system that is part of an inflorescence and has as parts a second order inflorescence branch and any shoot axes and flowers that arise from that branch." [POC:rw] comment: This a sub-inflorescence that arises from the main inflorescence axis. subset: Angiosperm synonym: "secondary inflorescence" EXACT [] is_a: PO:0025082 ! reproductive shoot system relationship: has_part PO:0006321 ! second order inflorescence axis relationship: has_part PO:0009046 ! flower relationship: part_of PO:0009049 ! inflorescence created_by: Ramona creation_date: 2010-12-30T03:31:29Z [Term] id: PO:0025241 name: second order infructescence namespace: plant_anatomy def: "A reproductive shoot system that is part of an infructescence and has as parts a second order infructescence axis and any infructescence axes and fruits that arise from it." [POC:rw] subset: Angiosperm subset: Musa synonym: "hand of bananas" NARROW [] synonym: "hand of fruit" EXACT [CO_125:.0000037] synonym: "secondary infructescence" EXACT [] xref: OBO_SF_PO:3147085 is_a: PO:0025082 ! reproductive shoot system relationship: has_part PO:0009001 ! fruit relationship: has_part PO:0025112 ! second order infructescence axis relationship: part_of PO:0006342 ! infructescence created_by: Ramona creation_date: 2010-12-30T03:31:29Z [Term] id: PO:0025242 name: infructescence axis namespace: plant_anatomy def: "A shoot axis that is part of an infructescence." [POC:rw] is_a: PO:0025029 ! shoot axis relationship: develops_from PO:0020122 ! inflorescence axis relationship: part_of PO:0006342 ! infructescence created_by: Ramona creation_date: 2010-12-30T03:34:07Z [Term] id: PO:0025243 name: infructescence branch namespace: plant_anatomy def: "An infructescence axis that is a branch from a primary or higher order infructescence axis." [POC:rw] xref: OBO_SF_PO:3150504 xref: OBO_SF_PO:3151857 is_a: PO:0025242 ! infructescence axis created_by: Ramona creation_date: 2010-12-30T03:37:08Z [Term] id: PO:0025244 name: first order infructescence axis namespace: plant_anatomy def: "An infructescence axis that is the primary or main axis of an infructescence." [POC:rw] synonym: "infructescence rachis" EXACT [] is_a: PO:0025242 ! infructescence axis created_by: Ramona creation_date: 2010-12-30T03:38:25Z [Term] id: PO:0025245 name: persistent sepal namespace: plant_anatomy def: "A phyllome that develops from a sepal and remains attached to a fruit at maturity." [POC:rw] comment: May be alive or dead at maturity. subset: Musa synonym: "flower relic" BROAD [CO_125:0000045] xref: OBO_SF_PO:3147085 is_a: PO:0006001 ! phyllome relationship: develops_from PO:0009031 ! sepal created_by: Ramona creation_date: 2010-12-30T03:47:08Z [Term] id: PO:0025246 name: persistent tepal namespace: plant_anatomy def: "A phyllome that develops from a tepal and remains attached to a fruit at maturity." [POC:rw] comment: May be alive or dead at maturity. subset: Musa synonym: "flower relic" BROAD [CO_125:0000045] xref: OBO_SF_PO:3147085 is_a: PO:0006001 ! phyllome relationship: develops_from PO:0009033 ! tepal created_by: Ramona creation_date: 2010-12-30T03:47:08Z [Term] id: PO:0025247 name: persistent stamen namespace: plant_anatomy def: "A phyllome that develops from a stamen and remains attached to a fruit at maturity." [POC:rw] comment: May be alive or dead at maturity. subset: Musa synonym: "flower relic" BROAD [CO_125:0000045] xref: OBO_SF_PO:3147085 is_a: PO:0006001 ! phyllome relationship: develops_from PO:0009029 ! stamen created_by: Ramona creation_date: 2010-12-30T03:47:08Z [Term] id: PO:0025248 name: pseudostem namespace: plant_anatomy def: "A collective organ part structure that forms a cylindrical false stem composed concentric leaf sheaths." [POC:rw] comment: The peduncle later grows up through the psuedostem. Common in Musa species and some other monocots. subset: Musa xref: CO_125:0000046 xref: OBO_SF_PO:3147109 is_a: PO:0025269 ! collective organ part structure created_by: Ramona creation_date: 2010-12-30T03:53:09Z [Term] id: PO:0025249 name: leaf sheath epidermis namespace: plant_anatomy def: "A portion of leaf epidermis that is part of a leaf sheath." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0006016 ! leaf epidermis intersection_of: PO:0005679 ! epidermis intersection_of: part_of PO:0020104 ! leaf sheath relationship: part_of PO:0020104 ! leaf sheath created_by: Ramona creation_date: 2010-12-30T03:58:22Z [Term] id: PO:0025250 name: leaf sheath abaxial epidermis namespace: plant_anatomy def: "A portion of leaf sheath epidermis that covers the abaxial/lower surface of a leaf sheath." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. subset: Musa synonym: "pseudostem underlayers" NARROW [CO_125:0000047] xref: OBO_SF_PO:3147109 is_a: PO:0025249 ! leaf sheath epidermis created_by: Ramona creation_date: 2010-12-30T04:02:50Z [Term] id: PO:0025251 name: leaf sheath adaxial epidermis namespace: plant_anatomy def: "A portion of leaf sheath epidermis that covers the adaxial/upper surface of a leaf sheath." [POC:rw] comment: If you are annotating to this term, please add an additional annotation to vascular leaf (PO:0009025) or non-vascular leaf (PO:0025075), depending on the species. All annotations for angiosperms, gymnosperms, and pteridophytes should go to vascular leaf and all annotations for bryophytes should go to non-vascular leaf. is_a: PO:0025249 ! leaf sheath epidermis created_by: Ramona creation_date: 2010-12-30T04:02:50Z [Term] id: PO:0025252 name: seventh order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a sixth order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025253 name: eighth order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a seventh order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025254 name: ninth order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from an eight order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025255 name: tenth or higher order infructescence axis namespace: plant_anatomy def: "An infructescence branch arising from a ninth or higher order infructescence axis." [POC:rw] is_a: PO:0025243 ! infructescence branch created_by: Ramona creation_date: 2011-01-05T09:16:29Z [Term] id: PO:0025256 name: lateral root elongation zone namespace: plant_anatomy def: "A root elongation zone that is part of a lateral root tip." [POC:rw] is_a: PO:0025181 ! root elongation zone relationship: part_of PO:0000027 ! lateral root tip created_by: Ramona creation_date: 2011-01-05T12:05:43Z [Term] id: PO:0025257 name: primary root elongation zone namespace: plant_anatomy def: "A root elongation zone that is part of a primary root tip." [POC:rw] is_a: PO:0025181 ! root elongation zone relationship: part_of PO:0000026 ! primary root tip created_by: Ramona creation_date: 2011-01-05T12:05:43Z [Term] id: PO:0025258 name: procambial cell namespace: plant_anatomy def: "A meristematic cell that is part of a portion of procambium." [POC:rw] synonym: "procambium cell" EXACT [] is_a: PO:0004010 ! meristematic cell relationship: part_of PO:0025275 ! procambium created_by: Ramona creation_date: 2011-02-02T09:46:46Z [Term] id: PO:0025259 name: leaf procambium namespace: plant_anatomy def: "A portion of shoot procambium tissue that is part of a leaf." [POC:rw] is_a: PO:0025276 ! shoot procambium created_by: Ramona creation_date: 2011-02-02T11:16:33Z [Term] id: PO:0025260 name: shoot axis procambium namespace: plant_anatomy def: "A portion of shoot procambium that is part of a shoot apical meristem and gives rise to the primary vascular tissue of a shoot axis." [POC:rw] xref: OBO_SF_PO:3184921 is_a: PO:0025276 ! shoot procambium relationship: part_of PO:0020148 ! shoot apical meristem created_by: Ramona creation_date: 2011-02-02T11:16:33Z [Term] id: PO:0025261 name: pericycle cell namespace: plant_anatomy def: "A ground tissue cell that is part of a portion of pericycle." [POC:rw] xref: OBO_SF_PO:3124791 is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0006203 ! pericycle created_by: Ramona creation_date: 2011-02-02T11:52:49Z [Term] id: PO:0025262 name: ovary septum namespace: plant_anatomy def: "A septum that divides a multilocular ovary." [POC:curators] comment: Found in species with syncarpous gynoecia (fused carpels). An ovary septum is derived from the fused walls of two adjacent carpels, while a replum (PO:0005016) develops from early contact of placental tissue from opposite sides of the ovary. Annotations for Arabidopsis should go under replum, not under ovary septum. synonym: "carpel synonym" RELATED [] xref: OBO_SF_PO:3177333 is_a: PO:0000030 ! septum relationship: develops_from PO:0005022 ! ovary wall relationship: part_of PO:0009062 ! gynoecium created_by: Ramona creation_date: 2011-02-09T10:31:04Z [Term] id: PO:0025263 name: locule namespace: plant_anatomy def: "A plant anatomical space that is a cavity a reproductive structure." [POC:curators] comment: May be a cavity in a sporophyll, within several fused sporophylls, or within a sporangium. In many instances, the locules are filled with seeds or other plant structures. synonym: "loculus" EXACT [] xref: OBO_SF_PO:3040048 xref: OBO_SF_PO:3166008 is_a: PO:0025117 ! plant anatomical space created_by: Ramona creation_date: 2011-02-09T10:43:49Z [Term] id: PO:0025264 name: anther locule namespace: plant_anatomy def: "A sporangium locule that is part of an anther and is a cavity within a single pollen sac or two or more fused pollen sacs." [POC:curators] synonym: "pollen sac locule" EXACT [] synonym: "sporophyll locule" BROAD [] is_a: PO:0025265 ! sporangium locule relationship: part_of PO:0009066 ! anther created_by: Ramona creation_date: 2011-02-09T01:37:34Z [Term] id: PO:0025265 name: sporangium locule namespace: plant_anatomy alt_id: PO:0025271 def: "A locule that is a cavity in a sporangium or several fused sporangia." [POC:curators] comment: May be filled with spores. synonym: "spore capsule locule" EXACT [] is_a: PO:0025263 ! locule relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-02-09T10:44:53Z [Term] id: PO:0025266 name: ovary locule namespace: plant_anatomy def: "A locule that is a cavity in an ovary." [POC:curators] comment: Generally contains at least one ovule. An ovary locule may be part of a single carpel, in the case of unicarpellate flowers. An ovary that is part of a syncarpous gynoecium may have multiple locules, or the anatomical spaces of multiple carpels may be fused to form a single locule. synonym: "sporophyll locule" BROAD [] xref: OBO_SF_PO:3166008 is_a: PO:0025263 ! locule relationship: part_of PO:0009072 ! ovary created_by: Ramona creation_date: 2011-02-09T01:39:52Z [Term] id: PO:0025267 name: fruit replum namespace: plant_anatomy def: "A portion of fruit placenta tissue that divides a fruit into two or more chambers and develops from a replum." [POC:rw] comment: A fruit replum develops from the ovary replum and has no suture line in its center, while a fruit septum (PO:0025262) develops from an ovary septum via the fusion of two adjacent ovary walls. Common in Brassicaceae. Annotations for Arabidopsis fruit should go here, and not under fruit septum. subset: Arabidopsis xref: OBO_SF_PO:3177363 is_a: PO:0004535 ! fruit placenta relationship: develops_from PO:0025272 ! ovary replum created_by: Ramona creation_date: 2011-02-09T02:16:55Z [Term] id: PO:0025268 name: fruit septum namespace: plant_anatomy def: "A septum that divides a cavity or mass of tissue in a fruit and develops from an ovary septum." [POC:rw] comment: Annotations for Arabidopsis should go under fruit replum (PO:0025267), not under fruit septum. The partition between two sections of an orange is a fruit septum. xref: OBO_SF_PO:3177333 is_a: PO:0000030 ! septum relationship: develops_from PO:0025262 ! ovary septum relationship: part_of PO:0009001 ! fruit created_by: Ramona creation_date: 2011-02-09T02:30:21Z [Term] id: PO:0025269 name: collective organ part structure namespace: plant_anatomy def: "A plant structure composed of two or more cardinal organ parts from adjacent organs and any associated portions of plant tissue." [POC:curators] comment: A collective organ part structure is composed of parts of multiple organs, but no complete organs. The organ parts are often of the same type (e.g., petioles, carpel walls), but may be of different types. Includes plant structures like a septum that consists of the walls of two fused carpels or a pseudostem that consist of multiple, overlapping leaf sheaths. Unlike a collective plant structure, a collective organ part structure does not contain any complete organs. xref: OBO_SF_PO:3175301 is_a: PO:0009011 ! plant structure disjoint_from: PO:0000003 ! whole plant disjoint_from: PO:0000034 ! vascular system disjoint_from: PO:0009002 ! plant cell disjoint_from: PO:0009007 ! portion of plant tissue relationship: has_part PO:0025001 ! cardinal organ part created_by: Ramona creation_date: 2011-02-09T02:57:59Z [Term] id: PO:0025270 name: fruit locule namespace: plant_anatomy def: "A locule that is a cavity in a fruit and develops from an ovary locule." [POC:curators] xref: OBO_SF_PO:3166008 is_a: PO:0025263 ! locule relationship: develops_from PO:0025266 ! ovary locule relationship: part_of PO:0009001 ! fruit created_by: Ramona creation_date: 2011-02-17T07:17:12Z [Term] id: PO:0025272 name: ovary replum namespace: plant_anatomy def: "A portion of ovary placenta tissue that divides an ovary into two or more chambers and develops from contact of the placental tissue from opposite sides of the ovary early in gynoecium development." [ISBN:0387940898, POC:curators] comment: An ovary replum develops along with the ovary and has no suture line in its center, while a true ovary septum (PO:0025262) is derived from the fusion two adjacent ovary walls. Common in Brassicaceae. Annotations for Arabidopsis should go here, and not under ovary septum. subset: Arabidopsis synonym: "false ovary septum" EXACT [] synonym: "placental septum" EXACT [] xref: OBO_SF_PO:3177363 is_a: PO:0020001 ! ovary placenta created_by: Ramona creation_date: 2011-02-17T08:29:21Z [Term] id: PO:0025273 name: stem procambium namespace: plant_anatomy def: "A portion of shoot axis procambium gives rise to the primary vascular tissue of a stem." [POC:rw] xref: OBO_SF_PO:3184921 is_a: PO:0025260 ! shoot axis procambium created_by: Ramona creation_date: 2011-02-17T09:48:05Z [Term] id: PO:0025274 name: branch procambium namespace: plant_anatomy def: "A portion of shoot axis procambium gives rise to the primary vascular tissue of a branch." [POC:rw] xref: OBO_SF_PO:3184921 is_a: PO:0025260 ! shoot axis procambium created_by: Ramona creation_date: 2011-02-17T09:48:05Z [Term] id: PO:0025275 name: procambium namespace: plant_anatomy def: "A portion of meristem tissue that undergoes differentiation to form the primary vascular tissue." [ISBN:0471244554] comment: May occur in an apical meristem or in a developing phyllome. Gives rise to the primary xylem and primary phloem. This term replaces PO:0006074. xref: OBO_SF_PO:3184905 is_a: PO:0009013 ! meristem created_by: Ramona creation_date: 2011-02-24T01:10:38Z [Term] id: PO:0025276 name: shoot procambium namespace: plant_anatomy def: "A portion of procambium tissue that is part of a shoot system." [POC:rw] xref: OBO_SF_PO:3184921 is_a: PO:0025275 ! procambium relationship: part_of PO:0009006 ! shoot system created_by: Ramona creation_date: 2011-02-25T08:50:03Z [Term] id: PO:0025277 name: pollen sac namespace: plant_anatomy def: "A microsporangium that is located in a sporophyll and where the pollen grains developed and are located after they develop." [POC:curators] comment: A pollen sac is a microsporangium in seed plants. In angiosperms, a single, unfused pollen sac may contain an anther locule or several pollen sacs may fuse so they contain a single anther locule. subset: reference subset: TraitNet synonym: "anther lobe" NARROW [] xref: OBO_SF_PO:3132610 xref: OBO_SF_PO:3195056 is_a: PO:0025202 ! microsporangium relationship: part_of PO:0009028 ! microsporophyll created_by: Ramona creation_date: 2011-02-25T09:17:11Z [Term] id: PO:0025278 name: rhizome scale leaf namespace: plant_anatomy def: "A scale leaf that grows from a rhizome." [POC:rw] is_a: PO:0006003 ! scale leaf created_by: Ramona creation_date: 2011-02-25T09:59:47Z [Term] id: PO:0025279 name: megagametophyte namespace: plant_anatomy def: "A whole plant in the gametophytic phase that produces only egg cells." [POC:curators] comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, Gnetum, and Weltwischia, the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac. synonym: "female gametophyte" EXACT [] xref: OBO_SF_PO:3257959 is_a: PO:0000003 ! whole plant created_by: Ramona creation_date: 2011-03-23T11:32:19Z [Term] id: PO:0025280 name: microgametophyte namespace: plant_anatomy def: "A whole plant in the gametophytic phase that produces only sperm cells." [POC:curators] comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In seed plants the male gametophyte is reduced to a pollen grain. synonym: "male gametophyte" EXACT [] xref: OBO_SF_PO:3257959 is_a: PO:0000003 ! whole plant created_by: Ramona creation_date: 2011-03-23T11:32:19Z [Term] id: PO:0025281 name: pollen namespace: plant_anatomy def: "A microgametophyte that is located in a pollen sac." [POC:curators] comment: Produces pollen sperm cells. subset: Angiosperm subset: Gymnosperms synonym: "pollen grain" EXACT [] xref: OBO_SF_PO:3257963 is_a: PO:0025280 ! microgametophyte created_by: Ramona creation_date: 2011-03-31T07:05:48Z [Term] id: PO:0025282 name: archegonium megagametophyte namespace: plant_anatomy def: "A megagametophyte that has as parts one or more archegonia." [POC:curators] comment: Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. subset: Bryophytes subset: Pteridophytes synonym: "archegonial megagametophyte" EXACT [] is_a: PO:0025279 ! megagametophyte relationship: has_part PO:0025126 ! archegonium created_by: Ramona creation_date: 2011-03-31T07:08:48Z [Term] id: PO:0025283 name: antheridium microgametophyte namespace: plant_anatomy def: "A microgametophyte that has as parts one or more antheridia." [POC:curators] comment: Microgametophytes in bryophytes only produce sperm cells, but do not develop from microspores, because there is no heterospory in bryophytes. In some pteridophytes, microgametophytes develop from microspores. subset: Bryophytes subset: Pteridophytes synonym: "antheridial microgametophyte" EXACT [] is_a: PO:0025280 ! microgametophyte relationship: has_part PO:0025125 ! antheridium created_by: Ramona creation_date: 2011-03-31T07:12:52Z [Term] id: PO:0025284 name: embryo apical cell namespace: plant_anatomy def: "A meristematic apical cell that is part of a plant embryo and is the uppermost cell formed after the first division of a zygote." [ISBN:0471245208, ISBN:9780070588493] synonym: "embryonic meristematic apical cell" EXACT [] is_a: PO:0025028 ! embryo plant cell is_a: PO:0030007 ! meristematic apical cell is_a: PO:0030015 ! sporophyte meristematic apical cell relationship: develops_from PO:0000423 ! zygote relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-12T09:05:04Z [Term] id: PO:0025285 name: callus parenchyma cell namespace: plant_anatomy def: "A parenchyma cell that is part of a plant callus." [POC:curators] is_a: PO:0000074 ! parenchyma cell relationship: part_of PO:0005052 ! plant callus created_by: Ramona creation_date: 2011-04-20T02:00:16Z [Term] id: PO:0025286 name: embryo coleoptile namespace: plant_anatomy def: "A coleoptile that is part of a plant embryo." [POC:curators] synonym: "embryonic coleoptile" EXACT [] xref: OBO_SF_PO:3192359 is_a: PO:0020033 ! coleoptile is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-20T02:20:11Z [Term] id: PO:0025287 name: seedling coleoptile namespace: plant_anatomy def: "A coleoptile that develops from an embryonic coleoptile." [POC:curators] comment: A seedling coleoptile is an elongation of an embryonic coleoptile and is part of a whole plant in the seedling phase. xref: OBO_SF_PO:3192359 is_a: PO:0020033 ! coleoptile relationship: develops_from PO:0025286 ! embryo coleoptile created_by: Ramona creation_date: 2011-04-20T02:20:12Z [Term] id: PO:0025288 name: embryo coleorhiza namespace: plant_anatomy def: "A coleorhiza that is part of a plant embryo." [POC:curators] synonym: "embryonic coleorhiza" EXACT [] xref: OBO_SF_PO:3293771 is_a: PO:0020034 ! coleorhiza is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-20T02:34:16Z [Term] id: PO:0025289 name: seedling coleorhiza namespace: plant_anatomy def: "A coleorhiza that develops from an embryonic coleorhiza." [POC:curators] comment: Part of a whole plant in the seedling phase. xref: OBO_SF_PO:3293771 is_a: PO:0020034 ! coleorhiza relationship: develops_from PO:0025288 ! embryo coleorhiza created_by: Ramona creation_date: 2011-04-20T02:34:17Z [Term] id: PO:0025290 name: embryo hypocotyl namespace: plant_anatomy def: "A hypocotyl that is part of a plant embryo." [POC:curators] synonym: "embryonic hypocotyl" EXACT [] xref: OBO_SF_PO:3293772 is_a: PO:0020100 ! hypocotyl is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-20T02:39:46Z [Term] id: PO:0025291 name: seedling hypocotyl namespace: plant_anatomy def: "A hypocotyl that develops from an embryonic hypocotyl." [POC:curators] comment: Part of a whole plant in the seedling phase. This term should only be used for seed plants. xref: OBO_SF_PO:3293772 is_a: PO:0020100 ! hypocotyl relationship: develops_from PO:0025290 ! embryo hypocotyl created_by: Ramona creation_date: 2011-04-20T02:39:56Z [Term] id: PO:0025292 name: embryo epicotyl namespace: plant_anatomy def: "An epicotyl that is part of a plant embryo." [POC:curators] synonym: "embryonic epicotyl" EXACT [] xref: OBO_SF_PO:3293774 is_a: PO:0020035 ! epicotyl is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-25T10:13:08Z [Term] id: PO:0025293 name: seedling epicotyl namespace: plant_anatomy def: "A epicotyl that develops from an embryonic epicotyl." [POC:curators] comment: Part of a whole plant in the seedling phase. xref: OBO_SF_PO:3293774 is_a: PO:0020035 ! epicotyl relationship: develops_from PO:0025292 ! embryo epicotyl created_by: Ramona creation_date: 2011-04-25T10:13:08Z [Term] id: PO:0025294 name: embryo mesocotyl namespace: plant_anatomy def: "A mesocotyl that is part of a plant embryo." [POC:curators] synonym: "embryonic mesocotyl" EXACT [] xref: OBO_SF_PO:3293779 is_a: PO:0020037 ! mesocotyl is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-25T10:21:58Z [Term] id: PO:0025295 name: seedling mesocotyl namespace: plant_anatomy def: "A mesocotyl that develops from an embryonic mesocotyl." [POC:curators] comment: A seedling mesocotyl is an elongation of and embryonic mesocotyl that is part of a whole plant in the seedling phase. xref: OBO_SF_PO:3293779 is_a: PO:0020037 ! mesocotyl relationship: develops_from PO:0025294 ! embryo mesocotyl created_by: Ramona creation_date: 2011-04-25T10:21:58Z [Term] id: PO:0025296 name: embryo radicle namespace: plant_anatomy def: "A radicle that is part of a plant embryo." [POC:curators] subset: Citrus synonym: "embryonic radicle" EXACT [] xref: OBO_SF_PO:3293781 is_a: PO:0020031 ! radicle is_a: PO:0025099 ! embryo plant structure relationship: part_of PO:0009009 ! plant embryo created_by: Ramona creation_date: 2011-04-25T10:41:14Z [Term] id: PO:0025297 name: seedling radicle namespace: plant_anatomy def: "A radicle that develops from an embryonic radicle." [POC:curators] comment: Part of a whole plant in the seedling phase. xref: OBO_SF_PO:3293781 is_a: PO:0020031 ! radicle relationship: develops_from PO:0025296 ! embryo radicle created_by: Ramona creation_date: 2011-04-25T10:41:48Z [Term] id: PO:0025298 name: fruit operculum namespace: plant_anatomy def: "A collective organ part structure that is the apical part of a circumsessile capsular fruit that separates from the rest of the capsule during dehiscence." [POC:curators] comment: Develops from the apical portion of a gynoecium. Found in Eucalyptus and other Myrtaceae. is_a: PO:0025269 ! collective organ part structure disjoint_from: PO:0030044 ! spore capsule operculum relationship: part_of PO:0009001 ! fruit created_by: Ramona creation_date: 2011-04-26T08:42:24Z [Term] id: PO:0025299 name: calyptra perianth namespace: plant_anatomy def: "A perianth that is composed of fused perianth parts and located on top of a gynoecium that contains an inferior ovary." [POC:curators] comment: May be composed of fused petals, sepals or tepals, but is generally formed from fused petals in Eucalyptus and other Myrtaceae. Sometimes erroneously referred to as part of a fruit. Not the same structure as a spore capsule calyptra. synonym: "angiosperm calyptra" EXACT [] synonym: "floral calyptra" EXACT [] synonym: "floral operculum" RELATED [] xref: OBO_SF_PO:3241802 is_a: PO:0009058 ! perianth disjoint_from: PO:0030037 ! spore capsule calyptra created_by: Ramona creation_date: 2011-04-26T08:45:55Z [Term] id: PO:0025300 name: embryo hypocotyl-root junction namespace: plant_anatomy def: "A hypocotyl-root junction that is part of an embryo axis." [POC:rw] synonym: "embryonic hypocotyl-root junction" EXACT [] is_a: PO:0004724 ! hypocotyl-root junction relationship: part_of PO:0019018 ! embryo axis created_by: Ramona creation_date: 2011-04-27T08:20:22Z [Term] id: PO:0025301 name: seedling hypocotyl-root junction namespace: plant_anatomy def: "A hypocotyl-root junction that develops from an embryonic hypocotyl-root junction." [POC:curators] comment: Part of a whole plant in the seedling phase. is_a: PO:0004724 ! hypocotyl-root junction relationship: develops_from PO:0025300 ! embryo hypocotyl-root junction created_by: Ramona creation_date: 2011-04-27T08:20:22Z [Term] id: PO:0025302 name: somatic plant embryo namespace: plant_anatomy def: "A plant embryo that arises from previously differentiated somatic cells, rather than from fused gametes, i.e. the zygote." [POC:Curators] comment: Somatic plant embryos may arise where embryos normally would not arise as a product of apomixis. They may occur on the edges of leaves on some species of Kalanchoe or some ferns. synonym: "apomictic plant embryo" EXACT [] xref: OBO_SF_PO:3293415 is_a: PO:0009009 ! plant embryo created_by: cooperl creation_date: 2011-04-27T11:46:50Z [Term] id: PO:0025303 name: zygotic plant embryo namespace: plant_anatomy def: "A plant embryo that forms as a result of the fusion of gametes." [POC:curators] synonym: "zygotic embryo" EXACT [] is_a: PO:0009009 ! plant embryo created_by: cooperl creation_date: 2011-04-27T05:19:46Z [Term] id: PO:0025304 name: cultured zygote-derived plant embryo namespace: plant_anatomy def: "A zygotic plant embryo that is grown or maintained in vitro." [POC:curators] synonym: "cultured zygotic embryo" EXACT [] is_a: PO:0000010 ! cultured plant embryo is_a: PO:0025303 ! zygotic plant embryo created_by: cooperl creation_date: 2011-04-27T05:25:34Z [Term] id: PO:0025305 name: microspore-derived cultured plant embryo namespace: plant_anatomy def: "A cultured somatic plant embryo that develops from isolated microspores." [POC:curators] synonym: "microspore-derived haploid embryo" EXACT [] is_a: PO:0000011 ! cultured somatic plant embryo created_by: cooperl creation_date: 2011-04-27T05:33:40Z [Term] id: PO:0025306 name: sporangium wall namespace: plant_anatomy def: "A cardinal organ part that is composed of the outer layers of a sporangium and bounds the archesporium or spores." [ISBN:9780070588493] comment: May have multiple layers such as exothecium, endothecium and tapetum. Early in development, the sporangium wall bounds the archesporium. Later, after spores develop from the archesporium, it bounds the spore or spores. synonym: "sporangium jacket layer" EXACT [] synonym: "sporangium jacket layers" EXACT [] is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-05-02T09:14:26Z [Term] id: PO:0025307 name: microsporangium wall namespace: plant_anatomy is_a: PO:0025306 ! sporangium wall relationship: part_of PO:0025202 ! microsporangium created_by: Ramona creation_date: 2011-05-03T09:42:36Z [Term] id: PO:0025308 name: megasporangium wall namespace: plant_anatomy is_a: PO:0025306 ! sporangium wall relationship: part_of PO:0025201 ! megasporangium created_by: Ramona creation_date: 2011-05-03T09:42:36Z [Term] id: PO:0025309 name: microsporangium endothecium namespace: plant_anatomy def: "An endothecium that is part of a microsporangium wall." [POC:curators] xref: OBO_SF_PO:3298006 is_a: PO:0030049 ! sporangium wall endothecium relationship: part_of PO:0025307 ! microsporangium wall created_by: Ramona creation_date: 2011-05-03T11:13:31Z [Term] id: PO:0025310 name: megasporangium endothecium namespace: plant_anatomy def: "An endothecium that is part of a megasporangium wall." [POC:curators] xref: OBO_SF_PO:3298006 is_a: PO:0030049 ! sporangium wall endothecium relationship: part_of PO:0025308 ! megasporangium wall created_by: Ramona creation_date: 2011-05-03T11:13:31Z [Term] id: PO:0025311 name: microsporangium exothecium namespace: plant_anatomy def: "An exothecium that is part of a microsporangium wall." [POC:curators] synonym: "microsporangial exothecium" EXACT [] synonym: "microsporangium epidermis" EXACT [] xref: OBO_SF_PO:3297999 is_a: PO:0030073 ! exothecium relationship: part_of PO:0025307 ! microsporangium wall created_by: Ramona creation_date: 2011-05-03T11:19:36Z [Term] id: PO:0025312 name: megasporangium exothecium namespace: plant_anatomy def: "An exothecium that is part of a megasporangium wall." [POC:curators] synonym: "megapsorangial exothecium" EXACT [] synonym: "megasporangium epidermis" EXACT [] xref: OBO_SF_PO:3297999 is_a: PO:0030073 ! exothecium relationship: part_of PO:0025308 ! megasporangium wall created_by: Ramona creation_date: 2011-05-03T11:19:36Z [Term] id: PO:0025313 name: tapetum namespace: plant_anatomy def: "A portion of ground tissue that is the inner-most layer of a sporangium wall." [ISBN:0471244554, ISBN:9780003686647, ISBN:9780070588493] comment: May function in providing nutrition to developing sporocytes or pollen. May have one or more layers of cells. May break down as spores mature. A tapetum does not develop in some plants, such as Psilotum. In angiosperms, the tapetum develops from one of the parietal layers. In non-seed plants, the tapetum may develop from the outer cells of archesporium or from the inner-most layer of the sporangium wall. xref: OBO_SF_PO:3298006 is_a: PO:0025059 ! portion of ground tissue relationship: part_of PO:0025306 ! sporangium wall created_by: Ramona creation_date: 2011-05-03T11:59:24Z [Term] id: PO:0025314 name: microsporangium tapetum namespace: plant_anatomy def: "An tapetum that is part of a microsporangium wall." [POC:curators] xref: OBO_SF_PO:3298006 is_a: PO:0025313 ! tapetum relationship: part_of PO:0025307 ! microsporangium wall created_by: Ramona creation_date: 2011-05-03T12:03:42Z [Term] id: PO:0025315 name: megasporangium tapetum namespace: plant_anatomy def: "An tapetum that is part of a megasporangium wall." [POC:curators] xref: OBO_SF_PO:3298006 is_a: PO:0025313 ! tapetum relationship: part_of PO:0025308 ! megasporangium wall created_by: Ramona creation_date: 2011-05-03T12:03:42Z [Term] id: PO:0025316 name: axillary hair namespace: plant_anatomy def: "A multicellular trichome that has as parts a long terminal cell atop a basal stalk and grows in a leaf axil." [ISBN:9780473067304, POC:curators] comment: Found in monocots and mosses. The basal stalk may contain one or more cells. xref: OBO_SF_PO:3293292 is_a: PO:0025162 ! multicellular trichome created_by: Ramona creation_date: 2011-05-04T11:08:44Z [Term] id: PO:0025317 name: axillary hair terminal cell namespace: plant_anatomy def: "A trichome cell that is the long terminal cell of an axillary hair." [ISBN:9780473067304] xref: OBO_SF_PO:3293292 is_a: PO:0008030 ! trichome cell relationship: part_of PO:0025316 ! axillary hair created_by: Ramona creation_date: 2011-05-04T11:15:11Z [Term] id: PO:0025318 name: axillary hair base namespace: plant_anatomy def: "A portion of plant tissue that is the basal part of an axillary hair, below the axillary hair terminal cell." [ISBN:9780473067304] comment: Consists of two or more cells. xref: OBO_SF_PO:3293292 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0025316 ! axillary hair created_by: Ramona creation_date: 2011-05-04T11:18:18Z [Term] id: PO:0025319 name: axillary hair basal cell namespace: plant_anatomy def: "A trichome cell that is part of an axillary hair base." [ISBN:9780473067304] synonym: "axillary hair base cell" EXACT [] xref: OB_SF_PO:3293292 is_a: PO:0008030 ! trichome cell relationship: part_of PO:0025318 ! axillary hair base created_by: Ramona creation_date: 2011-05-04T11:20:33Z [Term] id: PO:0025320 name: cotyledonary node rhizoid namespace: plant_anatomy def: "An epidermal rhizoid that grows form a cotyledonary node." [ISBN:3540640606, PMID:17933843] comment: Found in some monocots. synonym: "collar rhizoid" EXACT [] synonym: "wurtzelhalsrhizoid" EXACT [] is_a: PO:0030071 ! epidermal rhizoid created_by: Ramona creation_date: 2011-05-09T01:26:21Z [Term] id: PO:0025321 name: cotyledonary node namespace: plant_anatomy def: "A stem node from which one or more cotyledons grow." [POC:rw] is_a: PO:0020141 ! stem node created_by: Ramona creation_date: 2011-05-09T01:27:53Z [Term] id: PO:0025322 name: hydathode pore namespace: plant_anatomy def: "A plant anatomical space that is an opening in a hydathode." [PMID:18450784, POC:curators] comment: Similar to a stomatal pore, but lacks the ability to open and close. Involved in the release water or xylem sap through guttation or secretion. xref: OBO_SF_PO:3289531 is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0005660 ! hydathode created_by: Ramona creation_date: 2011-05-11T01:48:37Z [Term] id: PO:0030001 name: chloronema cell namespace: plant_anatomy def: "A chlorenchyma cell that is part of a chloronema and has cross walls of adjacent cells that are perpendicular to the protonema axis." [POC:rw] comment: A chloronema cell contains many well-developed chloroplasts. subset: Bryophytes xref: OBO_SF_PO:3199622 is_a: PO:0000076 ! chlorenchyma cell relationship: part_of PO:0030004 ! chloronema created_by: Ramona creation_date: 2011-03-10T10:51:12Z [Term] id: PO:0030002 name: caulonema cell namespace: plant_anatomy def: "A chlorenchyma cell that is part of a caulonema and has cross walls of adjacent cells that are oblique to the protonema axis." [POC:rw] comment: A caulonema cell contains fewer, less well-developed chloroplasts than a chloronema cell. subset: Bryophytes xref: OBO_SF_PO:3199622 is_a: PO:0000076 ! chlorenchyma cell relationship: part_of PO:0030005 ! caulonema created_by: Ramona creation_date: 2011-03-10T10:51:12Z [Term] id: PO:0030003 name: protonema namespace: plant_anatomy def: "A portion of chlorenchyma tissue that develops directly from a spore and grows by division of an apical cell to form filaments that are one cell wide and dicotomously branching." [POC:rw] comment: The protonema is the first structure that develops in the gametophytic phase of mosses, some other bryophytes, and leptosporangiate ferns. The term protonema is also used to refer to the phase of development in which protonemal tissue is produced (see PO:0030006 protonema phase). In some species of moss, the protonema is perennial. A protonema may develop from sporophytic tissue during apospory. subset: Bryophytes subset: Pteridophytes synonym: "portion of protonema tissue" EXACT [] synonym: "protonemata" EXACT Plural [] xref: OBO_SF_PO:3199622 is_a: PO:0005426 ! chlorenchyma created_by: Ramona creation_date: 2011-03-10T11:00:03Z [Term] id: PO:0030004 name: chloronema namespace: plant_anatomy def: "A portion of protonema tissue that consists of only chloronema cells." [POC:rw] comment: Generally, the development of chloronema precedes the development of caulonema. Only the caulonema, and not the chloronema, initiates gametophore buds. subset: Bryophytes synonym: "chloronemata" EXACT Plural [] synonym: "portion of chloronema tissue" EXACT [] xref: OBO_SF_PO:3199622 is_a: PO:0030003 ! protonema created_by: Ramona creation_date: 2011-03-10T11:00:03Z [Term] id: PO:0030005 name: caulonema namespace: plant_anatomy def: "A portion of protonema tissue that consists of only caulonema cells." [POC:rw] comment: Generally, the development of caulonema follows the development\nof chloronema. Only the caulonema, and not the chloronema, initiates gametophore buds. subset: Bryophytes synonym: "caulonemata" EXACT Plural [] synonym: "portion of caulonema tissue" EXACT [] xref: OBO_SF_PO:3199622 is_a: PO:0030003 ! protonema created_by: Ramona creation_date: 2011-03-10T11:00:03Z [Term] id: PO:0030007 name: meristematic apical cell namespace: plant_anatomy def: "A single meristematic cell at the tip of a plant structure where apical growth occurs." [ISBN:0962073342, ISBN:9780473067304] comment: Apical cells occur only at the tip of a shoot axis apex, leaf apex, root apex, thallus apex, or protonema in bryophytes and some pteridophytes. Apical growth results from division of a single meristematic cell located at the tip of an apical meristem or plant organ, rather than from a population of meristematic cells located at the tip of an apical meristem. The apical cell may be tetrahedral shaped, with three (in shoots) or four (in roots) cutting faces, or wedge-shaped (lenticular) with two cutting faces (in non-vascular leaves or thalli). An apical cell may be established upon germination of a spore or upon the first cell division of an embryo, or later. subset: Bryophytes subset: Pteridophytes synonym: "apical cell" EXACT [] synonym: "apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0004010 ! meristematic cell created_by: Ramona creation_date: 2011-03-25T09:35:20Z [Term] id: PO:0030008 name: root meristematic apical cell namespace: plant_anatomy def: "A sporophyte meristematic apical cell that is part of a root tip." [ISBN:B0007J6EN6 "Parihar, 1959. An Introduction to Embryophyta: Vol. II. Pteridophytes.", POC:curators] comment: Occurs in the sporophytic phase of pteridophytes. subset: Pteridophytes synonym: "root apical cell" EXACT [] synonym: "root apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030015 ! sporophyte meristematic apical cell relationship: part_of PO:0000025 ! root tip created_by: Ramona creation_date: 2011-03-25T09:39:59Z [Term] id: PO:0030009 name: shoot meristematic apical cell namespace: plant_anatomy def: "A meristematic apical cell that is part of a shoot system." [ISBN:0962073342, ISBN:9780473067304] comment: May occur in shoot axes or leaves of bryophytes or ferns. subset: Bryophytes subset: Pteridophytes synonym: "shoot apical cell" EXACT [] synonym: "shoot apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030007 ! meristematic apical cell relationship: part_of PO:0009006 ! shoot system created_by: Ramona creation_date: 2011-03-25T09:39:59Z [Term] id: PO:0030010 name: shoot axis meristematic apical cell namespace: plant_anatomy def: "A shoot meristematic apical cell that is part of a shoot apex." [ISBN:0962073342, ISBN:9780473067304] comment: Divides to produces leaf initial cells (if leaves are present) and other stem or branch tissues. subset: Bryophytes subset: Pteridophytes synonym: "shoot axis apical cell" EXACT [] synonym: "shoot axis apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030009 ! shoot meristematic apical cell relationship: part_of PO:0000037 ! shoot apex created_by: Ramona creation_date: 2011-03-25T09:42:10Z [Term] id: PO:0030011 name: leaf meristematic apical cell namespace: plant_anatomy def: "A shoot meristematic apical cell that is part of a leaf apex." [ISBN:0962073342, POC:curators] comment: Occurs in the non-vascular leaves of bryophytes and the vascular leaves of some ferns. Only in plants where leaf growth is apical. subset: Bryophytes subset: Pteridophytes synonym: "leaf apical cell" EXACT [] synonym: "leaf apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030009 ! shoot meristematic apical cell relationship: part_of PO:0020137 ! leaf apex created_by: Ramona creation_date: 2011-03-25T09:43:12Z [Term] id: PO:0030012 name: vascular leaf meristematic apical cell namespace: plant_anatomy def: "A leaf meristematic apical cell that is part of the leaf apex of a vascular leaf." [ISBN:B0007J6EN6 "Parihar, 1959. An Introduction to Embryophyta: Vol. II. Pteridophytes.", POC:curators] comment: Occurs in vascular leaves of some ferns in their sporophytic phase. subset: Pteridophytes synonym: "vascular leaf apical cell" EXACT [] synonym: "vascular leaf apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030011 ! leaf meristematic apical cell is_a: PO:0030015 ! sporophyte meristematic apical cell relationship: part_of PO:0009025 ! vascular leaf created_by: Ramona creation_date: 2011-03-25T09:44:45Z [Term] id: PO:0030013 name: non-vascular leaf meristematic apical cell namespace: plant_anatomy def: "A leaf meristematic apical cell that is part of a leaf apex of a non-vascular leaf." [ISBN:0962073342, PMID:19303301] comment: Occurs in the non-vascular leaves of bryophytes, which grow by division of a single, wedge-shaped apical cell with two cutting faces. subset: Bryophytes synonym: "non-vascular leaf apical cell" EXACT [] synonym: "non-vascular leaf apical initial" EXACT [] synonym: "phyllid apical cell" EXACT [] synonym: "phyllid apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030011 ! leaf meristematic apical cell is_a: PO:0030019 ! gametophore meristematic apical cell relationship: develops_from PO:0030087 ! non-vascular leaf initial relationship: part_of PO:0025075 ! non-vascular leaf created_by: Ramona creation_date: 2011-03-25T09:44:45Z [Term] id: PO:0030014 name: gametophyte meristematic apical cell namespace: plant_anatomy def: "An apical cell that is part of a whole plant in the gametophytic phase." [POC:curators] comment: Occurs bryophytes and pteridophytes. subset: Bryophytes subset: Pteridophytes synonym: "gametophyte apical cell" EXACT [] synonym: "gametophyte apical initial" EXACT [] synonym: "gametophytic meristematic apical cell" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030007 ! meristematic apical cell created_by: Ramona creation_date: 2011-03-25T10:00:48Z [Term] id: PO:0030015 name: sporophyte meristematic apical cell namespace: plant_anatomy def: "A meristematic apical cell that is part of a whole plant in the sporophytic phase." [POC:curators] comment: Occurs in pteridophytes and the sporophyte of bryophytes. subset: Bryophytes subset: Pteridophytes synonym: "sporophyte apical cell" RELATED [] synonym: "sporophyte apical initial" RELATED [] synonym: "sporophytic meristematic apical cell" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030007 ! meristematic apical cell created_by: Ramona creation_date: 2011-03-25T10:00:48Z [Term] id: PO:0030016 name: seta meristematic apical cell namespace: plant_anatomy def: "A shoot axis meristematic apical cell at the tip of a seta." [ISBN:0962073342, POC:curators] comment: Ceases being an apical cell when the sporangium begins to develop. subset: Bryophytes synonym: "seta apical cell" EXACT [] synonym: "seta apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030010 ! shoot axis meristematic apical cell is_a: PO:0030015 ! sporophyte meristematic apical cell relationship: part_of PO:0030032 ! seta created_by: Ramona creation_date: 2011-04-26T07:56:36Z [Term] id: PO:0030017 name: spore capsule mouth namespace: plant_anatomy def: "A plant anatomical space that is the opening on the apical end of a spore capsule." [POC:curators] comment: May be covered by a peristome. subset: Bryophytes synonym: "sporangium mouth" EXACT [] xref: OBO_SF_PO:3241816 is_a: PO:0025117 ! plant anatomical space relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-26T09:01:06Z [Term] id: PO:0030018 name: gametophore namespace: plant_anatomy def: "A shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase." [ISBN:0962073342] comment: A gametophore is the leafy part of the gametophyte of mosses and leafy liverworts, excluding the protonema. Develop from buds that form on the protonema. Antheridia and archegonia arise on the gametophore. subset: Bryophytes xref: OBO_SF_PO:3185093 is_a: PO:0009006 ! shoot system relationship: develops_from PO:0030026 ! gametophore bud created_by: Ramona creation_date: 2011-03-25T10:28:20Z [Term] id: PO:0030019 name: gametophore meristematic apical cell namespace: plant_anatomy def: "A shoot meristematic apical cell that is part of a gametophore." [ISBN:0962073342, POC:curators] comment: Occurs in the non-vascular shoot system of the gametophyte of mosses and leafy liverworts. subset: Bryophytes synonym: "gametophore apical cell" EXACT [] synonym: "gametophore apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030009 ! shoot meristematic apical cell is_a: PO:0030014 ! gametophyte meristematic apical cell intersection_of: PO:0030009 ! shoot meristematic apical cell intersection_of: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-03-25T10:45:12Z [Term] id: PO:0030020 name: gametophore axis namespace: plant_anatomy def: "A shoot axis that is part of a gametophore." [ISBN:0962073342, POC:curators] comment: Found in mosses and leafy liverworts. A stem or branch of the leafy part of a bryophyte. subset: Bryophytes synonym: "caulid" EXACT [] synonym: "cauloid" EXACT [] synonym: "non-vascular shoot axis" EXACT [] xref: OBO_SF_PO:3185162 is_a: PO:0025029 ! shoot axis intersection_of: PO:0025029 ! shoot axis intersection_of: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-03-25T10:57:31Z [Term] id: PO:0030021 name: gametophore branch namespace: plant_anatomy def: "A branch that is part of a gametophore." [POC:rw] comment: A branch of the leafy part of a bryophyte shoot system. subset: Bryophytes synonym: "caulid branch" EXACT [] synonym: "cauloid branch" EXACT [] synonym: "non-vascular branch" EXACT [] xref: OBO_SF_PO:3185162 is_a: PO:0025073 ! branch is_a: PO:0030020 ! gametophore axis relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-03-25T11:13:48Z [Term] id: PO:0030022 name: gametophore stem namespace: plant_anatomy def: "A stem that is part of a gametophore." [POC:rw] comment: A stem (the primary axis) of the leafy part of a bryophyte shoot system. subset: Bryophytes synonym: "caulid stem" EXACT [] synonym: "cauloid stem" EXACT [] synonym: "non-vascular stem" EXACT [] xref: OBO_SF_PO:3185162 is_a: PO:0009047 ! stem is_a: PO:0030020 ! gametophore axis relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-03-25T11:17:24Z [Term] id: PO:0030023 name: gametophore axis meristematic apical cell namespace: plant_anatomy def: "A shoot axis meristematic apical cell at the tip of a gametophore axis." [ISBN:0962073342, ISBN:9780473067304] comment: Occurs at the tips of the stems and branches of bryophytes. subset: Bryophytes synonym: "cauloid apical cell" EXACT [] synonym: "gametophore axis apical cell" EXACT [] synonym: "gametophore axis apical initial" EXACT [] synonym: "non-vascular shoot axis apical cell" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030010 ! shoot axis meristematic apical cell is_a: PO:0030019 ! gametophore meristematic apical cell relationship: part_of PO:0030020 ! gametophore axis created_by: Ramona creation_date: 2011-03-25T11:41:09Z [Term] id: PO:0030024 name: vascular shoot axis meristematic apical cell namespace: plant_anatomy def: "A shoot axis meristematic apical cell at the tip of a shoot apex in a shoot system that has as part vascular tissue." [ISBN:B0007J6EN6 "Parihar, 1959. An Introduction to Embryophyta: Vol. II. Pteridophytes.", POC:curators] comment: Occurs in some ferns in their sporophytic phase. subset: Pteridophytes synonym: "fern shoot axis apical cell" EXACT [] synonym: "vascular shoot axis apical cell" EXACT [] synonym: "vascular shoot axis apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030010 ! shoot axis meristematic apical cell is_a: PO:0030015 ! sporophyte meristematic apical cell created_by: Ramona creation_date: 2011-03-25T11:46:56Z [Term] id: PO:0030025 name: thallus meristematic apical cell namespace: plant_anatomy def: "A gametophyte apical cell that is part of a thallus." [ISBN:0962073342] subset: Bryophytes subset: Pteridophytes synonym: "thallus apical cell" EXACT [] synonym: "thallus apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030014 ! gametophyte meristematic apical cell relationship: part_of PO:0030027 ! thallus created_by: Ramona creation_date: 2011-03-25T12:09:10Z [Term] id: PO:0030026 name: gametophore bud namespace: plant_anatomy def: "A vegetative bud that develops into a gametophore." [ISBN:9780473067304] comment: Occurs in mosses and leafy liverworts. Develops from a caulonema cell in mosses. subset: Bryophytes synonym: "brown bud" EXACT [] xref: OBO_SF_PO:3185097 is_a: PO:0000058 ! vegetative bud relationship: develops_from PO:0030083 ! gametophore bud initial relationship: has_part PO:0030019 ! gametophore meristematic apical cell created_by: Ramona creation_date: 2011-04-12T08:22:35Z [Term] id: PO:0030027 name: thallus namespace: plant_anatomy def: "A whole plant in the gametophytic phase that has a flat growth form and no distinct organs." [ISBN:B0007J6EN6 "N.S. Parihar 1967. Pteridophytes, 2nd Edition"] comment: A thallus is a gametophyte of liverworts and pteridophytes and develops from a short-lived protonema. Roughly two dimensional growth results from division of a single apical cell. Thalli may be ribbon or heart shaped or almost filamentous. Although there are no distinct organs, there may be tissue differentiation and dichotomous branching. subset: Bryophytes subset: Pteridophytes synonym: "prothallium" BROAD [] synonym: "thalli" EXACT Plural [] xref: OBO_SF_PO:3257063 is_a: PO:0000003 ! whole plant created_by: Ramona creation_date: 2011-04-12T08:35:16Z [Term] id: PO:0030028 name: perigonial bract namespace: plant_anatomy def: "A bract that subtends an antheridium." [ISBN:9780473067304] comment: When an antheridium occurs on a specialized lateral branch of the gametophore, all of the phyllomes on that branch are usually perigonial bracts. If an antheridium occurs on a main axis of the gametophore, usually only the terminal phyllomes are perigonial bracts. subset: Bryophytes synonym: "perigonium bract" EXACT [] xref: OBO_SF_PO:3185168 is_a: PO:0009055 ! bract relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-04-12T09:56:04Z [Term] id: PO:0030029 name: sporophyte foot namespace: plant_anatomy def: "A plant organ that is the base of a whole plant in the sporophytic phase and attaches it to the gametophore." [ISBN:0029496608, ISBN:0962073342] comment: Found in bryophytes and some pteridophytes. In mosses, the foot is located below the seta. In ferns, the foot is formed from the upper hypobasal quandrant of the embryo. The sporophyte foot serves for both attachment and absorption. The outer portion of the foot is composed of absorptive transfer cells. subset: Bryophytes subset: Citrus subset: Pteridophytes xref: OBO_SF_PO:3234965 is_a: PO:0009008 ! plant organ relationship: has_part PO:0000078 ! transfer cell created_by: Ramona creation_date: 2011-04-12T10:01:12Z [Term] id: PO:0030030 name: perichaetal bract namespace: plant_anatomy def: "A bract that subtends an archegonium." [ISBN:0962073342] comment: When an archegonium occurs on a specialized lateral branch of the gametophore, all of the phyllomes on that branch are usually perichaetal bracts. If an archegonium occurs on a main axis of the gametophore, only the terminal phyllomes are usually perichaetal bracts. The two or three terminal-most perichaetal bracts may fuse to form a gametophytic perianth. subset: Bryophytes synonym: "perichaetum bract" EXACT [] xref: OBO_SF_PO:3185168 is_a: PO:0009055 ! bract relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-04-12T10:07:51Z [Term] id: PO:0030031 name: gametophyte perianth namespace: plant_anatomy def: "A collective phyllome structure that consists of two or more of the most distal perichaetal bracts on a gametophore axis and surround a capsule." [ISBN:0962073342] comment: The perichaetal bracts may fuse laterally in the gametophytic perianth. The gametophytic perianth is not the same structure as a perianth (PO:0009058) in angiosperms. subset: Bryophytes subset: Citrus subset: Pteridophytes synonym: "gametophytic perianth" EXACT [] is_a: PO:0025023 ! collective phyllome structure disjoint_from: PO:0009058 ! perianth relationship: has_part PO:0030030 ! perichaetal bract relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-04-12T10:16:51Z [Term] id: PO:0030032 name: seta namespace: plant_anatomy def: "A plant axis that holds up a spore capsule." [ISBN:0962073342, POC:curators] comment: Found in some bryophytes, especially mosses. subset: Bryophytes synonym: "setae" EXACT Plural [] xref: OBO_SF_PO:3185175 is_a: PO:0025004 ! plant axis created_by: Ramona creation_date: 2011-04-12T10:25:45Z [Term] id: PO:0030033 name: antheridiophore namespace: plant_anatomy def: "A plant axis that bears two or more antheridia on an antheridial head." [ISBN:0962073342] comment: Found in Marchantiales. subset: Bryophytes xref: OBO_SF_PO:3272612 is_a: PO:0025004 ! plant axis created_by: Ramona creation_date: 2011-04-12T10:29:01Z [Term] id: PO:0030034 name: archegoniophore namespace: plant_anatomy def: "A plant axis that bears two or more archegonia on an archegonial head." [ISBN:0962073342] comment: Found in Marchantiales. subset: Bryophytes xref: OB_SF_PO:3272612 is_a: PO:0025004 ! plant axis created_by: Ramona creation_date: 2011-04-12T10:29:01Z [Term] id: PO:0030035 name: antheridium stalk namespace: plant_anatomy def: "A stalk that is the basal part of an antheridium." [ISBN:9780070588493] comment: Raises the antheridium above the rest of the gametophyte. subset: Bryophytes subset: Pteridophytes synonym: "antheridial stalk" EXACT [] xref: OBO_SF_PO:3272612 is_a: PO:0025066 ! stalk relationship: part_of PO:0025125 ! antheridium created_by: Ramona creation_date: 2011-04-12T10:39:46Z [Term] id: PO:0030036 name: archegonium stalk namespace: plant_anatomy def: "A stalk that the basal part of an archegonium." [ISBN:9780070588493] comment: Raises the venter above the rest of the gametophyte. subset: Bryophytes subset: Pteridophytes synonym: "archegonial stalk" EXACT [] xref: OBO_SF_PO:3272612 is_a: PO:0025066 ! stalk relationship: part_of PO:0025126 ! archegonium created_by: Ramona creation_date: 2011-04-12T10:39:46Z [Term] id: PO:0030037 name: spore capsule calyptra namespace: plant_anatomy def: "A cardinal organ part that develops from the wall of an archegonium and surrounds a sporangium." [ISBN:0962073342, ISBN:9780473067304] comment: Found in bryophytes. The calyptra is a membranous or hairy cap or hood composed of gametophytic tissue that protects the embryonic sporophyte within the archegonium. In some species, the calyptra may persist after the sporophyte develops and gets carried upward as the seta elongates. subset: Bryophytes xref: OBO_SF_PO:3234979 is_a: PO:0025001 ! cardinal organ part disjoint_from: PO:0025299 ! calyptra perianth relationship: develops_from PO:0025126 ! archegonium created_by: Ramona creation_date: 2011-04-12T10:53:45Z [Term] id: PO:0030038 name: venter namespace: plant_anatomy def: "A cardinal organ part that is the enlarged basal part of an archegonium and has an archegonium egg cell located in it." [ISBN:0962073342] subset: Bryophytes subset: Gymnosperms subset: Pteridophytes xref: OBO_SF_PO:3234981 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025126 ! archegonium created_by: Ramona creation_date: 2011-04-12T11:00:43Z [Term] id: PO:0030039 name: archegonium neck namespace: plant_anatomy def: "A cardinal organ part that is the elongated apical part of an archegonium." [ISBN:0962073342, ISBN:9780070588493] comment: Early in development, the neck is occluded by a single row of neck canal cells. At maturity, the neck canal cells disintegrate, creating a canal for the sperm to enter the archegonium. subset: Bryophytes subset: Pteridophytes synonym: "archegonial neck" RELATED [] xref: OBO_SF_PO:3234985 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025126 ! archegonium created_by: Ramona creation_date: 2011-04-12T11:04:46Z [Term] id: PO:0030040 name: sporangium base namespace: plant_anatomy def: "A cardinal organ part that is the basal (distal) part of a sporangium." [ISBN:9780473067304] comment: Term used for bryophytes and pteridophytes. The sporangium base is the sterile part of the sporangium below the sporangium theca. If swollen and distinct from the rest of the sporangium, it is called an apophysis or hypophysis. subset: Bryophytes subset: Pteridophytes synonym: "apophysis" NARROW [ISBN:0962073342] synonym: "hypophysis" NARROW [ISBN:0962073342] synonym: "sporangium neck" EXACT [] xref: OBO_SF_PO:3241725 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-12T11:57:20Z [Term] id: PO:0030041 name: sporangium theca namespace: plant_anatomy def: "A cardinal organ part that is the main body of a sporangium and has spores located in it." [ISBN:9780473067304] comment: Term used for bryophytes and pteridophytes. subset: Bryophytes subset: Citrus subset: Pteridophytes synonym: "sporangium urn" EXACT [] xref: OBO_SF_PO:3241737 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-12T12:04:42Z [Term] id: PO:0030042 name: peristome namespace: plant_anatomy def: "A single or double circle of peristome teeth inside a sporangium mouth." [ISBN:9780473067304] comment: The peristome is located under the operculum, if an operculum is present. Upon maturity of a capsule, the teeth of the peristome open to release the spores. subset: Bryophytes xref: OBO_SF_PO:3241747 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-12T12:47:52Z [Term] id: PO:0030043 name: peristome tooth namespace: plant_anatomy def: "A cardinal organ part that is a single lobe of a peristome." [ISBN:9780473067304] comment: Generally triangular. Peristome teeth may be simple or compound, and may be attached by their tips to the epiphragm. subset: Bryophytes xref: OBO_SF_PO:3241747 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0030042 ! peristome created_by: Ramona creation_date: 2011-04-12T12:50:17Z [Term] id: PO:0030044 name: spore capsule operculum namespace: plant_anatomy def: "A cardinal organ part that is the apical part of a spore capsule that separates from the rest of the capsule during dehiscence." [ISBN:0962073342, ISBN:9780473067304] comment: Found in mosses. May remain partly attached to the rest of the capsule. subset: Bryophytes synonym: "sporangium lid" EXACT [] synonym: "spore capsule lid" EXACT [] xref: OBO_SF_PO:3241767 is_a: PO:0025001 ! cardinal organ part disjoint_from: PO:0025298 ! fruit operculum relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-12T12:53:17Z [Term] id: PO:0030045 name: stereid namespace: plant_anatomy def: "A ground tissue cell with thickened cell walls." [ISBN:0962073342, ISBN:376821110] comment: Found only in bryophytes in gametophore axes, setae, or leaves. Functions in support rather than conduction. May or may not retain a living protoplast at maturity. subset: Bryophytes synonym: "stereid cell" EXACT [] xref: OBO_SF_PO:3293311 is_a: PO:0025030 ! ground tissue cell relationship: part_of PO:0030050 ! stereome created_by: Ramona creation_date: 2011-04-25T11:33:34Z [Term] id: PO:0030046 name: protonema meristematic apical cell namespace: plant_anatomy def: "A gametophyte meristematic apical cell that is part of a protonema." [POC:curators] subset: Bryophytes subset: Pteridophytes synonym: "protonema apical cell" EXACT [] synonym: "protonema apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030014 ! gametophyte meristematic apical cell relationship: part_of PO:0030003 ! protonema created_by: Ramona creation_date: 2011-05-11T11:04:52Z [Term] id: PO:0030047 name: hydrome namespace: plant_anatomy def: "A portion of plant tissue that has as parts hydroid cells and cells of no other types." [ISBN:376821110] comment: A hydrome is composed of only hydroids. Found in bryophytes, in the center of a non-vascular shoot axis such as a gametophore or seta. Often surrounded by leptome. May function in water conduction and may provide support. subset: Bryophytes synonym: "hydrom" EXACT [] synonym: "leptoxylem" EXACT [] xref: OBO_SF_PO:3295055 is_a: PO:0009007 ! portion of plant tissue disjoint_from: PO:0005352 ! xylem created_by: Ramona creation_date: 2011-04-18T09:34:43Z [Term] id: PO:0030048 name: leptome namespace: plant_anatomy def: "A portion of plant tissue that has as parts leptoid cells and cells of no other types." [ISBN:376821110] comment: A leptome is composed of only leptoids. Found in bryophytes, in non-vascular shoot axes such as a gametophore axis or seta, or in the midrib of a non-vascular leaf. Often surrounding a central hydrome. May function in the conduction of organic substances, similar to phloem in vascular plants. subset: Bryophytes synonym: "leptom" EXACT [] synonym: "leptophloem" EXACT [] xref: OBO_SF_PO:3295055 is_a: PO:0009007 ! portion of plant tissue disjoint_from: PO:0005417 ! phloem created_by: Ramona creation_date: 2011-04-18T09:34:43Z [Term] id: PO:0030049 name: sporangium wall endothecium namespace: plant_anatomy def: "A portion of ground tissue that is the sub-epidermal layer of a sporangium wall." [ISBN:0471244554, ISBN:9780003686647] comment: Term used for vascular plants to describe the outermost layer of a sporangium wall that is internal to the exothecium. synonym: "endothecium of sporangium wall" EXACT [] xref: OBO_SF_PO:3298004 is_a: PO:0025059 ! portion of ground tissue disjoint_from: PO:0030085 ! protosporangium endothecium relationship: adjacent_to PO:0030073 ! exothecium relationship: part_of PO:0025306 ! sporangium wall created_by: Ramona creation_date: 2011-05-02T09:46:49Z [Term] id: PO:0030050 name: stereome namespace: plant_anatomy def: "A portion of ground tissue that has as parts stereid cells and no other cell types." [ISBN:376821110] comment: A stereome is composed of only stereids. Found only in bryophytes in gametophore axes or non-vascular leaves. May function in support. subset: Bryophytes xref: OBO_SF_PO:3295055 is_a: PO:0025059 ! portion of ground tissue created_by: Ramona creation_date: 2011-04-25T11:39:57Z [Term] id: PO:0030051 name: central strand namespace: plant_anatomy def: "A portion of plant tissue that is an axial strand in the center of a gametophore axis or seta and has as part a hydrome or a leptome." [ISBN:0029496608, ISBN:0962073342] comment: Often contains both hydrome and leptome. Found in bryophytes. The term central strand is sometimes used to describe a protostele in vascular plants, but this ontology class should only be used for non-vascular plants. Analogous to a vein or vascular bundle in vascular plants. subset: Bryophytes synonym: "conducting cylinder" EXACT [ISBN:376821110] synonym: "conducting strand" EXACT [ISBN:376821110] xref: OBO_SF_PO:3295058 is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2011-04-25T01:04:07Z [Term] id: PO:0030052 name: antheridium jacket layer cell namespace: plant_anatomy def: "A plant cell that is part of an antheridium jacket layer." [ISBN:9780473067304] subset: Bryophytes subset: Pteridophytes synonym: "antheridium wall cell" EXACT [] synonym: "sterile jacket cell" EXACT [] xref: OBO_SF_PO:3293290 is_a: PO:0009002 ! plant cell relationship: part_of PO:0030053 ! antheridium jacket layer created_by: Ramona creation_date: 2011-04-29T08:13:39Z [Term] id: PO:0030053 name: antheridium jacket layer namespace: plant_anatomy def: "A portion of plant tissue that is a single layer of cells on the outside of an antheridium." [ISBN:9780473067304] comment: Cells in the antheridium jacket layer surround the inner spermatogenous cells and do not give rise to sperm cells. subset: Bryophytes subset: Pteridophytes synonym: "antheridial jacket layer" EXACT [] synonym: "antheridium wall" EXACT [] synonym: "sterile jacket layer" EXACT [] xref: OBO_SF_PO:3293931 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0025125 ! antheridium created_by: Ramona creation_date: 2011-04-29T08:16:07Z [Term] id: PO:0030054 name: epiphragm namespace: plant_anatomy def: "A portion of parenchyma tissue that forms a circular membrane extending from a spore capsule columella and attached to the ends of the peristome teeth that covers a spore capsule mouth." [ISBN:0962073342] comment: Present in some moss species of the family Polytrichaceae. subset: Arabidopsis subset: Bryophytes synonym: "epiphram" EXACT [] synonym: "tympanum" EXACT [] xref: OBO_SF_PO:3241820 is_a: PO:0005421 ! parenchyma relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-26T09:03:44Z [Term] id: PO:0030055 name: pseudopodium namespace: plant_anatomy def: "A gametophore axis that is a leafless extension of a gametophore stem or branch on which a sporophyte is borne." [ISBN:0029496608, ISBN:0962073342] comment: Raises the sporophyte above the perichaetial bracts. Found in Sphagnum and Andreaea. subset: Bryophytes synonym: "pseudopodia" EXACT Plural [] xref: OBO_SF_PO:3241827 is_a: PO:0030020 ! gametophore axis created_by: Ramona creation_date: 2011-04-26T09:08:14Z [Term] id: PO:0030056 name: archesporial cell namespace: plant_anatomy def: "A plant cell that divides to gives rise to a sporocyte and is part of a sporangium." [ISBN:9780070588493] comment: May also give rise to sterile cells such as elators (in liverworts) or tapetal cells. In most species outside seed plants, multiple archesporial cells are part of an archesporium or sporogenous tissue. synonym: "archesporial initial" EXACT [] synonym: "sporogenous cell" EXACT [] xref: OBO_SF_PO:3293208 is_a: PO:0009002 ! plant cell relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-04-28T08:31:02Z [Term] id: PO:0030057 name: alar cell namespace: plant_anatomy def: "A plant cell located at the base of a non-vascular leaf adjacent to where the leaf attaches to the stem." [ISBN:0029496608, ISBN:0962073342, ISBN:9780473067304] comment: Found in mosses. Alar cells occur in an area at the base of a leaf that may be triangular, ovate or rectangular and is sometimes called the alar region. They are different in size, shape, color, thickness, or ornamentation from other cells in the leaf. subset: Bryophytes xref: OBO_SF_PO:3293209 is_a: PO:0009002 ! plant cell relationship: part_of PO:0020040 ! leaf base relationship: part_of PO:0025075 ! non-vascular leaf created_by: Ramona creation_date: 2011-04-28T08:50:00Z [Term] id: PO:0030058 name: brachycyte namespace: plant_anatomy def: "A plant cell that develops from a cell in a protonema and has a thick cell wall." [ISBN:0962073342, ISBN:9781405181891] comment: Found in mosses. A brachycyte is a drought tolerant cell that can act as a gemma and may give rise to a new plant. Cells of a protonema may develop into brachycytes under stress. May form a chain or be separated by tmema cells. subset: Bryophytes synonym: "brood cell" EXACT [ISBN:0962073342] xref: OBO_SF_PO:3293213 is_a: PO:0009002 ! plant cell created_by: Ramona creation_date: 2011-04-28T09:14:10Z [Term] id: PO:0030059 name: tmema cell namespace: plant_anatomy def: "A plant cell at the base of a gemma or adjacent to a brachycyte that breaks down to allow abscission of the gemma or brachycyte." [ISBN:0962073342] comment: May be a single cell adjacent to a brachycyte or part of a portion of tmema tissue. subset: Bryophytes synonym: "brachytmema cell" NARROW [] synonym: "dlichotmema cell" NARROW [] xref: OBO_SF_PO:3293289 is_a: PO:0009002 ! plant cell created_by: Ramona creation_date: 2011-04-28T09:24:40Z [Term] id: PO:0030060 name: gametophore axillary hair namespace: plant_anatomy def: "An axillary hair that grows in a leaf axil of a non-vascular leaf." [ISBN:0962073342, ISBN:9780473067304, POC:curators "Lars Hedenas The Bryologist 100(1): pp. 65-88"] comment: Found in pleurocarpous mosses. Form in the axils of leaf primordia and may disappear when the gametophore is mature. subset: Bryophytes synonym: "club hair" EXACT [ISBN:0962073342] xref: OBO_SF_PO:3293292 is_a: PO:0025316 ! axillary hair relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-04-29T08:21:18Z [Term] id: PO:0030061 name: tmema namespace: plant_anatomy def: "A portion of plant tissue that has as parts tmema cells." [ISBN:0962073342, ISBN:9780473067304] comment: Found in bryophytes at the base of a gemma. Participates in abscission of the gemma. subset: Bryophytes xref: OBO_SF_PO:3293289 is_a: PO:0009007 ! portion of plant tissue relationship: has_part PO:0030059 ! tmema cell created_by: Ramona creation_date: 2011-04-29T08:30:03Z [Term] id: PO:0030062 name: gametophore axillary hair terminal cell namespace: plant_anatomy def: "An axillary hair terminal cell that is the long terminal cell of a gametophore axillary hair." [ISBN:9780473067304, POC:curators "Lars Hedenas, The Bryologist 100(1): pp. 65-88"] subset: Bryophytes xref: OBO_SF_PO:3293292 is_a: PO:0025317 ! axillary hair terminal cell relationship: part_of PO:0030060 ! gametophore axillary hair created_by: Ramona creation_date: 2011-04-29T08:39:12Z [Term] id: PO:0030063 name: gametophore axillary hair base namespace: plant_anatomy def: "A axillary hair base that is the basal part of a gametophore axillary hair, below the gametophore axillary hair terminal cell." [ISBN:9780473067304, POC:curators "Lars Hedenas The Bryologist 100(1): pp. 65-88"] comment: Consists of two to a dozen cells. subset: Bryophytes xref: OBO_SF_PO:3293292 is_a: PO:0025318 ! axillary hair base relationship: part_of PO:0030060 ! gametophore axillary hair created_by: Ramona creation_date: 2011-04-29T09:01:40Z [Term] id: PO:0030064 name: gametophore axillary hair basal cell namespace: plant_anatomy def: "An axillary hair basal cell that is part of a gametophore axillary hair base." [ISBN:9780473067304, POC:curators "Lars Hedenas The Bryologist 100(1): pp. 65-88"] subset: Bryophytes synonym: "gametophore axillary hair base cell" EXACT [] xref: OBO_SF_PO:3293292 is_a: PO:0025319 ! axillary hair basal cell relationship: part_of PO:0030063 ! gametophore axillary hair base created_by: Ramona creation_date: 2011-04-29T09:03:51Z [Term] id: PO:0030065 name: archegonium neck canal cell namespace: plant_anatomy def: "A plant cell that is one of the axial row of cells in an immature archegonium neck." [ISBN:0962073342] comment: As the archegonium matures, the archegonium neck canal cells disintegrate to form the archegonium neck canal. synonym: "archegonial neck canal cell" EXACT [] xref: OBO_SF_PO:3234985 is_a: PO:0009002 ! plant cell relationship: part_of PO:0030039 ! archegonium neck created_by: Ramona creation_date: 2011-04-29T09:13:40Z [Term] id: PO:0030066 name: archegonium neck canal namespace: plant_anatomy def: "A canal in the center of an archegonium neck." [ISBN:0962073342] comment: Forms after the archegonium neck canal cells disintegrate. subset: Bryophytes subset: Pteridophytes synonym: "archegonial neck canal" EXACT [] xref: OBO_SF_PO:3234985 is_a: PO:0025132 ! canal relationship: part_of PO:0030039 ! archegonium neck created_by: Ramona creation_date: 2011-04-29T09:21:53Z [Term] id: PO:0030067 name: protonema side branch initial namespace: plant_anatomy def: "An protonema sub-apical initial that gives rise to a branch of a protonema." [ISBN:9781405181891] comment: May give rise to a chloronema, caulonema, protonema rhizoid, tmema cell, or brachycyte. subset: Bryophytes synonym: "protonema side branch initial cell" EXACT [] synonym: "protonemal side branch initial cell" EXACT [] xref: OBO_SF_PO:3293297 xref: OBO_SF_PO:3293302 is_a: PO:0030086 ! protonema sub-apical initial relationship: part_of PO:0030003 ! protonema created_by: Ramona creation_date: 2011-04-29T09:25:26Z [Term] id: PO:0030068 name: epidermal rhizoid initial namespace: plant_anatomy def: "An epidermal initial that gives rise to an epidermal rhizoid." [PMID:12917289] comment: Part of the epidermis of a thallus or gametophore of a bryophyte or pteridophyte in the gametophytic phase or the stem of a monocot in the sporophytic phase. synonym: "epidermal rhizoid initial cell" EXACT [] xref: OBO_SF_PO:3293302 is_a: PO:0000349 ! epidermal initial created_by: Ramona creation_date: 2011-04-29T09:33:11Z [Term] id: PO:0030069 name: paraphyllium namespace: plant_anatomy def: "A portion of epidermal tissue that is an outgrowth from the epidermis between the leaves of a gametophore axis." [ISBN:0962073342] comment: Paraphyllia are much smaller than leaves and may be filamentous, scale-like, or leaf-like. Found in pleurocarpous mosses and a few leafy liverworts. subset: Bryophytes synonym: "paraphyllia" EXACT Plural [] xref: OBO_SF_PO:3293886 is_a: PO:0005679 ! epidermis relationship: part_of PO:0030020 ! gametophore axis created_by: Ramona creation_date: 2011-04-29T01:01:17Z [Term] id: PO:0030070 name: paraphysis namespace: plant_anatomy def: "A slender, usually uniseriate multicellular trichome that grows intermixed with the gametangia." [ISBN:0029496608] comment: Found in bryophytes and pteridophytes, especially in mosses. subset: Bryophytes subset: Pteridophytes synonym: "paraphyses" EXACT Plural [] xref: OB_SF_PO:3293891 is_a: PO:0025162 ! multicellular trichome created_by: Ramona creation_date: 2011-04-29T01:05:26Z [Term] id: PO:0030071 name: epidermal rhizoid namespace: plant_anatomy def: "A rhizoid that develops from an epidermal rhizoid initial." [ISBN:12917289] comment: Found in bryophytes and pteridophytes growing from the epidermis of a gametophore or the lower surface of a thallus and in some monocots growing from the stem at the cotyledonary node. May be considered a type of trichome. xref: OBO_SF_PO:3293893 is_a: PO:0030078 ! rhizoid relationship: develops_from PO:0030068 ! epidermal rhizoid initial created_by: Ramona creation_date: 2011-04-29T01:15:05Z [Term] id: PO:0030072 name: costa namespace: plant_anatomy def: "A portion of plant tissue that is a single or double strand in the center of a non-vascular leaf and has as part hydrome or leptome." [ISBN:376821110] comment: Found in bryophytes. Often contains both hydrome and leptome. Functions in support and conduction in a phyllid. The term costa is sometimes used for the midrib of monocot leaves, but this ontology class should only be used for non-vascular leaves. subset: Bryophytes synonym: "non-vascular leaf midrib" EXACT [] synonym: "non-vascular leaf midvein" RELATED [] synonym: "non-vascular leaflet midrib" RELATED [] synonym: "phyllid costa" EXACT [] synonym: "phyllid midrib" EXACT [] synonym: "phyllid midvein" RELATED [] xref: OBO_SF_PO:3295062 is_a: PO:0009007 ! portion of plant tissue relationship: part_of PO:0025075 ! non-vascular leaf created_by: Ramona creation_date: 2011-04-29T02:30:17Z [Term] id: PO:0030073 name: exothecium namespace: plant_anatomy def: "A portion of epidermis that is the outermost layer of a sporangium wall." [ISBN:0962073342, ISBN:9780003686647] comment: Develops from the outermost layer of an amphithecium in bryophytes. synonym: "epithecium" EXACT [] synonym: "sporangium epidermis" EXACT [] synonym: "sporangium wall exothecium" EXACT [] xref: OBO_SF_PO:3241820 xref: OBO_SF_PO:3297999 is_a: PO:0005679 ! epidermis relationship: part_of PO:0025306 ! sporangium wall created_by: Ramona creation_date: 2011-05-02T09:46:49Z [Term] id: PO:0030074 name: archesporium namespace: plant_anatomy def: "A portion of plant tissue that is the internal part of a sporangium, bounded by the sporangium wall, and has as parts archesporial cells." [ISBN:8122407927, ISBN:9780003686647] comment: Gives rise to sporocytes and may give rise to other sterile cells such as elators. subset: Bryophytes subset: Gymnosperms subset: Pteridophytes synonym: "sporogenous tissue" EXACT [] xref: OBO_SF_PO:3296935 is_a: PO:0009007 ! portion of plant tissue relationship: has_part PO:0030056 ! archesporial cell relationship: part_of PO:0025094 ! sporangium created_by: Ramona creation_date: 2011-05-02T12:05:51Z [Term] id: PO:0030075 name: antheridium head namespace: plant_anatomy def: "A disk-shaped cardinal organ part that is the apical portion of an antheridiophore and bears antheridia." [ISBN:0962073342] comment: Found in Marchantiales. subset: Bryophytes subset: Poaceae synonym: "antheridial head" EXACT [] xref: OB_SF_PO:3272612 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0030033 ! antheridiophore created_by: Ramona creation_date: 2011-05-04T07:26:51Z [Term] id: PO:0030076 name: archegonium head namespace: plant_anatomy def: "An umbrella-shaped cardinal organ part that is the apical portion of an archegoniophore and bears archegonia." [ISBN:0962073342] comment: Found in Marchantiales. subset: Bryophytes subset: Poaceae synonym: "archegonial head" EXACT [] xref: OB_SF_PO:3272612 is_a: PO:0025001 ! cardinal organ part relationship: part_of PO:0030034 ! archegoniophore created_by: Ramona creation_date: 2011-05-04T07:26:51Z [Term] id: PO:0030077 name: protonemal side branch rhizoid initial namespace: plant_anatomy def: "A protonema side branch initial that gives rise to a protonemal rhizoid." [POC:curators] subset: Bryophytes synonym: "protonema side branch rhizoid initial cell" EXACT [] synonym: "protonemal side branch rhizoid initial cell" EXACT [] xref: OBO_PO_SF:3293297 xref: OBO_SF_PO:3293302 is_a: PO:0030067 ! protonema side branch initial created_by: Ramona creation_date: 2011-05-04T02:38:25Z [Term] id: PO:0030078 name: rhizoid namespace: plant_anatomy def: "A plant structure that is a uniseriate filament with positive geotropism that grows from an epidermis or protonema." [ISBN:0962073342, ISBN:unknown "Parihar 1959. An Introduction to Embryophyta: Vol. II. Pteridophytes."] comment: May be unicellular or multicellular. Serves to anchor the plant to the substrate, and may function in nutrient and water uptake. Usually lacks chlorophyll. Includes epidermal rhizoids that grow from the epidermis of bryophytes and pteridophytes in the gametophytic phase or from the stems of some monocots, protonemal rhizoids that branch from a protonema, and rhizoids that develop from a basal cell of a gametophore bud. xref: OBO_SF_PO:3293893 is_a: PO:0009011 ! plant structure created_by: Ramona creation_date: 2011-05-04T03:03:32Z [Term] id: PO:0030079 name: protonemal rhizoid namespace: plant_anatomy def: "A rhizoid that is part of a protonema and develops from a protonemal side branch rhizoid initial." [ISBN:0962073342] subset: Bryophytes xref: OBO_SF_PO:3293893 is_a: PO:0030078 ! rhizoid relationship: develops_from PO:0030077 ! protonemal side branch rhizoid initial created_by: Ramona creation_date: 2011-05-04T03:13:26Z [Term] id: PO:0030080 name: rhizoid meristematic apical cell namespace: plant_anatomy def: "A gametophyte meristematic apical cell that is part of a rhizoid." [POC:curators] subset: Bryophytes synonym: "rhizoid apical cell" EXACT [] synonym: "rhizoid apical initial" EXACT [] xref: OBO_SF_PO:3234956 is_a: PO:0030014 ! gametophyte meristematic apical cell relationship: part_of PO:0030078 ! rhizoid created_by: Ramona creation_date: 2011-05-17T09:04:15Z [Term] id: PO:0030081 name: caulonema meristematic apical cell namespace: plant_anatomy def: "A protonema meristematic apical cell that is part of a caulonema." [POC:curators] subset: Bryophytes synonym: "caulonema apical cell" EXACT [] synonym: "caulonema apical initial" EXACT [] is_a: PO:0030046 ! protonema meristematic apical cell created_by: Ramona creation_date: 2011-05-17T09:06:26Z [Term] id: PO:0030082 name: chloronema meristematic apical cell namespace: plant_anatomy def: "A protonema meristematic apical cell that is part of a chloronema." [POC:curators] subset: Bryophytes synonym: "chloronema apical cell" EXACT [] synonym: "chloronema apical initial" EXACT [] xref: OBOS_SF_PO:3234956 is_a: PO:0030046 ! protonema meristematic apical cell created_by: Ramona creation_date: 2011-05-17T09:06:26Z [Term] id: PO:0030083 name: gametophore bud initial namespace: plant_anatomy def: "A protonema sub-apical initial hat gives rise to a gametophore bud." [POC:curators] comment: In Physcomitrella patens, a gametophore bud initial typically is\nmore bulbous than a protonema side branch initial, and its plane of first\ncell division is oblique, rather than perpendicular, to the plane of growth. subset: Bryophytes synonym: "gametophore bud initial cell" EXACT [] xref: OBO_SF_PO:3293297 is_a: PO:0030086 ! protonema sub-apical initial created_by: Ramona creation_date: 2011-05-17T09:10:08Z [Term] id: PO:0030084 name: amphithecium namespace: plant_anatomy def: "A portion of plant tissue that is the outer layer or layers of a sporangium early in sporangium development." [ISBN:0962073342] comment: Term used for bryophytes. May have one or more layers. An amphithecium may give rise to an exothecium and other layer of a sporangium wall (jacket layer or layers). In true mosses, the amphithecium gives rise to the sporangium wall and the peristome. In hornworts and peat mosses, it gives rise to the sporangium wall and sporogenous tissue. subset: Bryophytes xref: OBO_SF_PO:3302899 is_a: PO:0009007 ! portion of plant tissue created_by: Ramona creation_date: 2011-05-17T10:28:55Z [Term] id: PO:0030085 name: protosporangium endothecium namespace: plant_anatomy def: "A portion of ground tissue that is the tissue internal to an amphithecium early in sporangium development." [ISBN:0962073342, ISBN:9780070588493, POC:curators] comment: Term used for bryophytes. In liverworts an early sporangium endothecium produces sporogenous tissue. In Sphagnum, Andreaea, and hornworts, it produces columella and sporogenous tissue. subset: Bryophytes synonym: "endothecium of protosporangium" EXACT [] xref: OBO_SF_PO:3298004 is_a: PO:0025059 ! portion of ground tissue disjoint_from: PO:0030049 ! sporangium wall endothecium created_by: Ramona creation_date: 2011-05-17T10:31:21Z [Term] id: PO:0030086 name: protonema sub-apical initial namespace: plant_anatomy def: "An initial cell that is produced by longitudinal division of a sub-apical cell of a protonema." [POC:rw] comment: May give rise to a branch of the protonema (including a protonema rhizoid, tmema cell or brachycyte), a gametophore bud, or may not divide further. subset: Bryophytes synonym: "protonema sub-apical initial cell" EXACT [] synonym: "protonemal sub-apical initial cell" RELATED [] xref: OBO_SF_PO:3293297 is_a: PO:0004011 ! initial cell disjoint_from: PO:0000059 ! root initial cell disjoint_from: PO:0000295 ! cambial initial disjoint_from: PO:0000349 ! epidermal initial created_by: Ramona creation_date: 2011-05-23T08:31:30Z [Term] id: PO:0030087 name: non-vascular leaf initial namespace: plant_anatomy def: "An initial cell that is part of a gametophore and gives rise to a non-vascular leaf." [PMID:19303301] comment: In Physcomitrella patens, non-vascular leaf initials arise from the daughter cells of a gametophore axis apical cell. Subsequent division of a non-vascular leaf initial establishes a non-vascular leaf apical cell. subset: Bryophytes synonym: "non-vascular leaf initial cell" EXACT [] xref: OBO_SF_PO:3304575 is_a: PO:0004011 ! initial cell relationship: part_of PO:0030018 ! gametophore created_by: Ramona creation_date: 2011-05-23T09:00:21Z [Typedef] id: adjacent_to name: adjacent_to comment: Used when a plant structure (the child) is permanently in contact with another plant structure (the parent). created_by: Ramona creation_date: 2011-05-09T11:54:22Z [Typedef] id: derives_from name: derives_from namespace: plant_anatomy created_by: Ramona creation_date: 2010-07-01T02:45:12Z [Typedef] id: develops_from name: develops_from namespace: plant_anatomy [Typedef] id: has_part name: has_part [Typedef] id: part_of name: part_of is_transitive: true [Typedef] id: participates_in name: participates_in comment: Used with a plant anatomical entity as the child and a plant growth and development stage as the parent. For example, plant gametangium participates_in gametophytic phase. holds_over_chain: part_of participates_in created_by: Ramona creation_date: 2011-03-23T10:52:56Z