septum

[planteome-user]

At the POC meeting on 2-8-11, we approved a new definition for septum (PO:0000030). This was done to clarify the difference between a true septum and a false septum (replum). See also tracker item for carpel septum/ovary septum.

Old def: A thin partition or membrane that divides a cavity or a mass of tissue, e.g., in anther, ovary or fruit.

New definition: A collective organ part structure composed of two or more layers of various tissues that is a partition that divides locules formed by the fusion of two or more organs.
Comment: A septum is formed by the fusion of the walls of two adjacent organ parts (ovary walls or anther walls), for example, the partition between two sections of an orange, seen in cross-section.

Also updated definitions of children of septum.

Reported by: rlwalls2008

Original Ticket: obo/plant-ontology-po-term-requests/277

[planteome-user]

I think the comment should read:
"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. "

Reasoning: It is not the walls of the parts of the organ, but the walls of the organs themselves that fuse.

Original comment by: cooperl09

[planteome-user]

Closing this item

Original comment by: rlwalls2008

[planteome-user]

• status: open --> closed-fixed

Original comment by: rlwalls2008