search

Planteome / plant-ontology

Repository for the Plant Ontology
Creative Commons Attribution 4.0 International
60 stars 17 forks source link

seed #405

Closed planteome-user closed 9 years ago

planteome-user commented 12 years ago

Seed (PO:0009010) is currently a subtype of whole plant. During a discussion at the POC meeting on 10-18-11, we realized that this was problematic. A seed contains a whole plant (the embryo), plus portions of tissue from the sporophyte mother, plus the triploid endosperm and possibly other tissues as well. Also, we have a new term, life of whole plant, and having seed as a whole plant is inconsistent with the definition of life of whole plant.

We agreed that perhaps it would be best to have seed be a subtype of plant structure.

Reported by: rlwalls2008

Original Ticket: obo/plant-ontology-po-term-requests/405

planteome-user commented 12 years ago

I made seed is_a plant structure and updated the definition.

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.

Original comment by: rlwalls2008

planteome-user commented 12 years ago

At the POC meeting on 1-17-12, the proposed definition was accepted with minor modifications.

new def.: A plant structure that develops from an ovule and has as parts an embryo enclosed in a seed coat. Comment: A seed generally develops from an ovule (PO:0020003) after fertilization, but may develop without fertilization in the case of apogamy (e.g., adventitious embryos or somatic embryos). A seed is a reproductive unit of seed plants (gymnosperms, angiosperms, and fossil pteridosperms). is_a plant structure, has_part embryo, develops_from ovule Can't add has_part seed coat, because it will conflict with the seed coat part_of seed relation.

Original comment by: rlwalls2008