POC Conf. Call 1-10-12

POC meeting, Webex Conference Call; Date: Tuesday Jan 10th, 2012 10am (PST)

In attendance:

POC members:

Absent:

Collaborators: none

Any changes or corrections (additions/deletions, etc) needed in the minutes from the POC_Conf._Call_1-3-12?

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New terms and changes arising from last week's discussion

seed (PO:0009010)

During a discussion at the POC meeting on 10-18-11, we realized that it would be best to have seed be a subtype of plant structure.

Old def.: A propagating organ formed in the reproductive cycle of gymnosperms and angiosperms, derived from the ovule and enclosing an embryo. [source: APWeb:Glossary, GR:Pankaj_Jaiswal] comment: The seed is representative of a next generation of sporophyte.

New proposed def.: A plant structure that develops from an ovule and contains an embryo enclosed in a seed coat. Comment: A seed is a reproductive unit of seed plants (gymnosperms and angiosperms).

develops_from ovule, has_part embryo

Also removed seed_part of fruit relation, added to subsets for gymnosperms and angiosperms.

plant spore stage (PO:0025375)

proposed definition: A gametophyte development stage that occurs during the interval between meiosis and the germination (first cell division) of a spore.

comment: Includes the stage when a megaspore is present before it develops into a megagametophyte or embryo sac and the stage when a microspore is present before it develops into a microgametophyte or pollen.

intersection of is_a gametophyte development stage, has_participant spore