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