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| − | =Continuing User requests: for PSO=
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| − | - Deal with and complete the list of user requests on SourceForge-
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| − | ==[https://sourceforge.net/tracker/?func=detail&aid=3040048&group_id=76834&atid=835555 Legume terms]==
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| − | submitted by Austin Mast
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| − | Several terms have already been dealt with (Taproot, Stem Hair, Prickles, Anther pore and anther slit)
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3165981&group_id=76834&atid=835555 fascicle] The term fascicle can refer to different structures in different taxa. Suggest we use the term '''floral fascicle''' or '''flower fascicle''' in this case, to distinguish it from a "leaf fascicle," which we may want to add for describing gymnosperms.
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| − | From Tucker, 2003, Flora:
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| − | (in the Papilionoideae) "Pseudoracemes (Fig. 5B) differ from racemes in
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| − | that two to several flowers are initiated in each bract axil rather than
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| − | just one as in a raceme. '''The cluster of flowers at each node is called a fascicle.''' The order of initiation among flowers at a node (Fig. 5B, Psoralea macrostachys DC) shows
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| − | '''the fascicle to be a short shoot topped by a second order inflorescence apical meristem'''. This meristem initiates
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| − | flowers in a bilaterally symmetrical order: a single abaxial flower, then
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| − | two lateral flowers, another median abaxial, then two more laterals. The
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| − | number of flowers per fascicle depends on the duration of the axillary
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| − | inflorescence apex of the short shoot, which ceases activity after
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| − | initiating the few flowers in the fascicle. No flowers are initiated
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| − | adaxially (toward the first order axis) on the short shoot (Tucker, 1987b;
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| − | Tucker and Stirton, 1991). The short shoot in a pseudoraceme can be
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| − | distinguished from a cyme in that every flower is bract subtended in a
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| − | pseudoraceme."
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| − | Suggested def: A second order inflorescence in which the second order inflorescence branch bears two or more flowers but is not elongated. Comment: A fascilce appears to be a cluster of flowers in an axil of a single bract of the main inflorescence. Common in some sections of the Fabaceae.
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3165983&group_id=76834&atid=835555 bristle] (used in key as "Stipules spinose or bristles"; might be thought of as a quality, rather than a structure)
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| − | We added the term stipule spine. Could also add the term '''stipule bristles''': A stipule that has a brush-like appearance.
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| − | Alternative is to suggest bristled to PATO
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3165984&group_id=76834&atid=835555 phyllode] Suggested def: A leaf in which there is no normal lamina development, but instead the petiole or petiole plus rachis is laminar.
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3165994&group_id=76834&atid=835555 banner, wing and keel]
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| − | '''Banner''' (as in a legume flower) - suggest using name 'banner petal'
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| − | Suggested def: A petal that is the top-most petal of a corolla in some flowers of the Fabaceae. Comment: The banner is usually larger than the adjacent wing petals.
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| − | '''Wing''' (as in a legume flower) - suggest using name 'wing petal'
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| − | Suggested def: One of two petals that is adjacent to the banner petal in some flowers of the Fabaceae. Comment: The wing petals are usually much smaller than the banner petal and the corolla keel.
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| − | '''Keel''' (as in a legume flower): The keel consists of two fused petals, and is analogous to the fused collective tepal structure we made for Musa. Maybe name 'corolla keel'
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| − | Suggest three new terms:
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| − | fused petal: A petal that is fused to another petal. Comment: May be fused to two petals (one on either side). This is a phenotype that is a cross-product of PO:0009032 (petal) and PATO:0000642 (fused with).
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| − | fused corolla: A corolla in which the petals are fused. Comment: This is a phenotype that is a cross-product of PO:0025023 (collective phyllome structure) and PATO:0000642 (fused with). A corolla may consist of a combination of fused and free petals, in which case fused corolla only refers to those petals that are fused.
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| − |
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| − | corolla keel: A fused corolla that consists of the two lowest petals in some flowers of the Fabaceae. Comment: The two petals of the keel may be fused at the apex but free at the base. The remaining three petals (banner and two wings) are free. The keel is boat shaped.
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3166008&group_id=76834&atid=835555 locule] The term locule can be used to refer to the cavity in an carpel or in an anther. In the PGDSO, we have the term PO:0001026 locules established, which is an anther development stage. For clarity, we may want to add two terms: locule, anther locule and carpel locule.
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| − | anther locule: A plant anatomical space that is a cavity in an anther formed by a single pollen sac.
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| − | carpel locule: A plant anatomical space that is a cavity in a carpel that contains at least one ovule. Comment: A syncarpous gynoecium may have multiple locules, and the locules of multiple carpels may be fused.
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| − | May want to add general parent terms locule: A plant anatomical space that is a cavity within a sporophyll. Synonym: loculus
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| − | ==TraitNet requests==
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080906&group_id=76834&atid=835555 corm]
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| − | proposed def: A short, enlarged storage stem in which the internodes do not elongate. Comment: usually underground.
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| − | child of stem (PO:0009047).
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080911&group_id=76834&atid=835555 podarium]
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| − | Their comment: is synonym to Tubercle
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| − | podarium (from Beentje 2010): (in cacti or other succulents) a modified leaf base functioning as the photosynthesising organ.
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| − | tubercle (from Beentje 2010): (in ball- or barrel- shaped cacti), cone-shaped protuberances that are elnarge modified leaf bases fused with adjacent stem tissue (tubercle has two other definitions as well).
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| − | proposed def:
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080913&group_id=76834&atid=835555 pneumatophore]
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| − | definition from Beentje (2010): erect (breathing) root protruding above the soil, encountered especially in mangroves
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| − | proposed def: A root that is erect and protrudes above the soil, found in trees that live in flooded habitats such as mangroves. Comment: Pneumatophores may provide oxygen to below ground roots growing in flooded soils.
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080916&group_id=76834&atid=835555 diaspore]
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| − | definition from Beentje (2010): reproductive portion of a plant, such as a seed, fruit or fragment of fruit, that is dispersed and may give rise to a new plant.
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| − | We could add this term as a kind of upper level bin term (similar to trichome)
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080919&group_id=76834&atid=835555 cone]
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| − | Should probably be a synonym of strobilus (PO:0025083). Narrow or exact?
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080922&group_id=76834&atid=835555 sorus]
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| − | from Crum (2001): a cluster of fern sporangia
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| − | from Beentje (2010): (of pteridophytes) structure bearing or containing groups of sporangia.
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| − | Proposed definition: A cardinal organ part composed of a cluster of two or more adjacent sporagia on the surface of a leaf. Comment: May be enclosed by an indusium.
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| − | Part_of vascular leaf, has_part sporangium
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| − | [https://sourceforge.net/tracker/?func=detail&aid=3080925&group_id=76834&atid=835555 tendril]
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| − | Defintion from Beentje (2010): a slender, coiling structure derived from a branch, leaf or inflorescence and used for climbing.
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| − | tendrils can derived from multiple types of structures. Suggest we make separate terms:
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| − | branch tendril (child of branch): A branch that is slender and coiling. Comment: Aids plant in climbing.
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| − | leaf tendril (child of leaf): A leaf that is slender and coiling and lacks a lamina. Comment: Aids plant in climbing.
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| − | leaflet tendril (child of leaflet): A leaflet that is slender and coiling. Comment: Aids plant in climbing.
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| − | leaf apex tendril (child of leaf apex): A leaf apex that is slender and coiling. Comment: Aids plant in climbing.
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| − | Can add other types of tendrils if they come up or users need them.
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| − | ==[https://sourceforge.net/tracker/index.php?func=detail&aid=2899934&group_id=76834&atid=835555 root terms]==
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| − | submitted by Rich Zobel (Nov 2009)
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| − | ==User requests still open on Source Forge; PGDSO ==
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| − | ===[http://sourceforge.net/tracker/index.php?func=detail&aid=2812238&group_id=76834&atid=835555 tuber growth and development stages]===
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| − | This item has been open on SF since 6/2009
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| − | I have a bunch of potato genes which are expressed in different tuber developmental stages (e.g. the potato pmt gene is expressed in small sprouts only (http://www.ncbi.nlm.nih.gov/pubmed/16088399).
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| − | Suggested stages:
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| − | -sprout development (does this correspond to tube axillary bud development? Should come after tuber maturation)
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| − | -tuber initiation
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| − | -tuber growth
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| − | -tuber maturation
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| − | How we work these in will depend on restructuring of PGDSO
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| − | l development in legumes (Plant Physiol, March 2003, Vol. 131, pp. 911-926
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| − | ===[https://sourceforge.net/tracker/index.php?func=detail&aid=3035688&group_id=76834&atid=835555 terms for seed development stages]===
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| − | This is a fairly new request for terms for cotton
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| | =Upcoming meetings 2011:= | | =Upcoming meetings 2011:= |
POC meeting, Webex Conference Call; Date: Tuesday Mar 15th, 2011 10am (PST)
In attendance:
POC members:
Absent:
Collaborators:
Acceptance of the minutes from the POC_Conf._Call_3-8-11?
Issues arising from last week's meeting:
Physcomitrella terms
Shoot apical meristem/apical cell/phyllome
MO has requested the term apical cell.
We already have the term apical cell (PO:0004000), which is an embryonic cell: "An embryonic plant cell that is the uppermost cell formed after the first division of the zygote." Suggest renaming PO:0004000 "embryonic apical cell" for clarity. The embryonic apical cell can also be found in non-angiosperms.
Growth in mosses (and other bryophytes?) results from divisions of a single apical cell. Branches or leaves form from division and differentiation of sub-apical cells. Mosses do not have an apical meristem in the same sense as vascular plants.
If we define apical cell as is_a meristematic cell, we will have a problem. Even though apical cell is consistent with the definition of meristematic cell (synthesizing protoplasm and producing new cells by division and with only a primary cell wall), it is not consistent with the relation meristematic cell part_of meristem. A meristem is a portion of tissue and therefore two or more cells. We could solve this problem by changing meristematic cell part_of meristem to meristem has_part meristematic cell.
Proposed def. of apical cell: A meristematic cell at the apex of a gametophore or non-vascular leaf (phyllid).
Comment: Occurs in mosses and other bryophytes.
Apical cells also cause an issue with or definition of phyllome (PO:0006001): "A lateral plant organ produced by a shoot apical meristem." This definition is not strictly applicable to non-vascular leaves, which are phyllomes. Suggest we tweak the definition of phyllome to allow for this.
Proposed def. of phyllome: A plant organ produced by the lateral portion of a shoot apex.
Comment: In vascular plants, phyllomes arise from the shoot apical meristem. In non-vascular plants, phyllomes arise from division of a sub-apical cell (sometimes referred to as a leaf initial).
Collective plant structures:
Def'n supplied by MO: The leafy moss plant. The gametophore is the adult form of the moss gametophyte and bearer of the sex organs (gametangia).
Ref: Reski (1998): Development, genetics and molecular biology of mosses. Botanica Acta 111, 1-15.
Suggest is_a shoot system.
Proposed def'n.: A shoot system that consists of the shoot axes and non-vascular leaves of a plant in the gametophytic phase. participates_in gametophytic phase
Comment: A gametophore is the leafy part of a moss gametophyte, without the protonema. Antheridia and archegonia arise on the gametophore.
The term "bud" has been requested:
Def'n supplied by MO: A structure produced by a caulonema and able to develop into a gametophore or a stem that includes an apical cell able to develop into a gametophore. The earliest recognizable stage of gametophore development.
Ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition and altered by David Cove
Suggest a new term gametophore bud. This could be a child of bud (PO:0000055: An undeveloped shoot system).
Proposed def'n: A bud on a protonema that develops into a gametophore. participates_in gametophytic phase
Comment: Occurs in mosses.
Plant organs:
- This is the term used for the gametophore stem or axis.
Suggest using gametophore axis as primary name, cauloid as synonym.
Proposed def'n: A plant axis that is part of a gametophore. is_a plant axis, part_of gametophore, participates_in gametophytic phase
Synonyms: cauloid, gametophyte axis
Also suggest adding terms for gametophore stem and gametophore branch (similar to stem and branch).
- The specialized phyllids surrounding the antheridia.
Ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition (MO definition)
A bract (PO:0009055) is defined as: A phyllome, usually different in form from the foliage leaves, subtending a reproductive structure. [source: POC:curators] Comment: Often used to refer to what is called here floral bract.
Proposed def'n: A bract that subtends an antheridium. part_of gametophore, participates in gametophytic phase
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.
Additional moss terms:
These were not requested by the Physcomitrella group, but they are related to the terms above and are commonly used to describe mosses, so we may as well add them now.
Proposed def'n: A bract that subtends and archegonium. part_of gametophore, participates_in gametophytic phase.
Comment: When an archegonium occurs on a specialized lateral branch of the gametophore, all of the phyllomes on that branch are usually parichaetal bracts. If an archegonium occurs on a main axis of the gametophore, only the terminal phyllomes are usually parichaetal bracts. The two or three terminal-most perichaetal bracts may fuse to form a gametophytic perianth.
Proposed def'n: A collective phyllome structure that consists of two or more of the most distal parachaetal bracts on an axis that are fused laterally and surround the calyptra.
Should it be surrounds the capsule, in case no calyptra is present?
-has_part parachaetal bract, part_of gametophore, participates_in gametophytic phase, disjoint from perianth (PO:0009058)
Comment: The gametophytic perianth is not the same structure as a perianth (PO:0009058) in angiosperms.
-The stalk of a moss sporophyte.
Suggested def'n: A plant axis that that holds up a spore capsule. participates_in sporophytic phase
Ref: Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition (MO definition)
Cardinal organ parts
Terms requested by MO:
calyptra
base
peristome
theca
lid
foot
neck canal
Other terms, not from MO
epiphram
spore capsule mouth
pseudopodium
venter
Plant Tissues
paraphyllium - Tiny filaments, scales or leaf-like structures scattered on the stems of some leafy bryophytes. Bill and Nancy Malcolm (2006): Mosses and other Bryophytes, an illustrated glossary, second edition (MO definition)
Crum defines them as "Small green outgrowths formed between the leaves on stems and branches of some pleurocarps (mosses that produce archegonia and sporophytes laterally, rather than on the tips of their axes) and a very few leafy liverworts."
Schofield describes paraphyllia as outgrowths of the epidermis, but he also describes leaves that way.
MO has this listed as a plant organ
Proposed definition: A phyllome/portion of plant tissue that is a small filamentous, scale-like, or leaf-like outgrowth from the epidermis between the leaves of a gametophore axis.
Comment: Paraphyllia are much smaller than leaves. Found in pleurocarpous mosses and a few leafy liverworts.
The paraphyllia are the small, dark structures between the leaves.
midrib
rhizoid
archesporium
amphithecium
endothecium
jacket layer
paraphysis
axilliary hair
tmema
Plant Cells
Terms requested by MO:
archesporial cell
apical cell
shoot apical cell
phyllid apical cell
alar cell
brachycyte
chloronema cell
caulonema cell
tmema cell
jacket layer cell
axillary hair terminal cell
axillary hair base cell
neck canal cell
side branch initial
Other terms, not requested by MO:
hyrdoid
leptoid
rhizoid initial
Upcoming meetings 2011:
Next meeting scheduled for Tues, Mar. 22nd, 2011 at 10am PDT
The paraphyllia are the small, dark structures between the leaves.
