organ specific terms of vascular tissue

[jaiswalp]

We have terms like Accession PO:0025612 Name stem cortex Definition A portion of shoot axis cortex (PO:0000223) that is part of a stem (PO:0009047).

This is useful when annotating objects associated with 'cortex' region that is part_of a stem. However, we need some consistency on spatial terms like this and a guidance for users, when to have terms like this or when not to.

e.g. we don't have similar spatial terms for use such as

• stem metaxylem
• root xylem
• shoot axis (stem) xylem
• root phloem
• shoot axis (stem) phloem

Ideas.... Either we create spatial terms like these in an automated way or have consistency across the ontology to either have them or not have them. This would help the users. I suggest going the former route by creating them in an automated process.

Otherwise, we may have to use some annotation column in the GAF to address this relationship. Which may work for the object (gene/qtl) annotations submitted via GAF. It will not work when a person annotates a histological specimen/section of a stem or root.