ventral canal cell (PO:0025524)

[planteome-user]

Propose adding new term: ventral canal cell (PO:0025524):
proposed def'n: ventral canal cell (PO:0025524): A plant cell (PO:0009002) that develops from the archegonium central cell (PO:0025509), and lies at the base of the archegonium neck (PO:0030039), above the archegonium egg cell (PO:0025122) in the venter (PO:0030038).

proposed comment: The ventral canal cell is smaller than the archegonium egg cell (PO:0025122), which also develops from the asymmetric division of the archegonium central cell (PO:0025509). It lack a plant-type cell wall (GO:0009505) (ref?). When the archegonium (PO:0025126) is mature, the ventral canal cell (along with the archegonium neck canal cells; PO:0030065), contributes to the formation of the archegonium neck canal (PO:0030066) by distintegrating and becoming mucilaginous. The canal cells and may produce chemicals to attract the male gamete, the antheridium sperm cells (PO:0025120).

Relations:
ventral canal cell (PO:0025524) part_of the venter (PO:0030038)
ventral canal cell (PO:0025524) develops_from archegonium central cell (PO:0025509)

References:
Ingrouille M, Eddie B (2006) Plants: Diversity and Evolution. Cambridge University Press
Rudall PJ (2006) How many nuclei make an embryo sac in flowering plants? BioEssays 28: 1067–1071

Reported by: cooperl09

Original Ticket: obo/plant-ontology-po-term-requests/514

[planteome-user]

However, the ventral canal cell can persist at least in some gymnosperms and in fact may actually fuse with the second sperm nucleus in some conifers and Ephedra.

Original comment by: dws409

[planteome-user]

Accepted at POC call 12-11-12, closing this tracker

Original comment by: cooperl09

[planteome-user]

Not sure the is is always true "It lack a plant-type cell wall (GO:0009505) (ref?)." At least not in bryophytes and pteridophytes, probably not in gymnos. Will check on the latter.

Original comment by: dws409

[planteome-user]

Moved to be is_a native plant cell and updated the def'ns:

ventral canal cell (PO:0025524): A native plant cell (PO:0025606) that develops from the archegonium central cell (PO:0025509), and lies at the base of the archegonium neck (PO:0030039), above the archegonium egg cell (PO:0025122) in the venter (PO:0030038).

Original comment by: cooperl09