Plant Structure Ontology update is in the cvs, new revision: 1.21

[katica at acoma.Stanford.EDU]

New revision of the Plant Structure Ontology is in the POC cvs.

I made the following changes:

1. New terms: long cell and short cell (is_a epidermal cell)

(i) epidermal cell
 	(i) long cell (PO:0004717)
 	(i) short cell (PO:0004718)
 		(i) epidermal cork cell
 		(i) silica cell

Definitions:
long cell - a more or less rectangular epidermal cell in which the 
proximo-distal dimension is several times longer than the transverse 
dimension.

short cell - an isodiametric epidermal cell.

To be consistent with existing term 'epidermal cork cell', I modified 
the definition of silica cell to:
"Cells with deposits of silica in them. One of the two types of short 
cells in the epidermis of grasses and bamboos. It is usually paired with 
epidermal cork cell."

Comment (for both cell types): In the leaf epidermis of Poaceae and 
Joinvilleaceae, long cells and short cells often alternate in longitudinal 
rows.

2. New term - hilum groove
Def: longitudinal groove in the testa through the prominent hilum of the 
seed.
Synonym: faboid split

3. Stem cell terms
Added stem cell as synonym of 'initial cell, and also, added 'columella 
root cap stem cell' as synonym of 'columella root cap initial'

4. New term - paraclade and paraclade cortex
Stem
  (p) paraclade (PO:0004720)
 	(p) paraclade cortex (PO:0004721)

paraclade (PO:0004720)
Def: lateral branch which ends in an inflorescence that repeats the main 
inflorescence (used both refs: APWeb and Weberling, ISBN: 0521251346
Morphology of Flowers and Inflorescences.

paraclade cortex (PO:0004721
Def The primary tissue located between the vascular system and the 
epidermis of the paraclade.

5. Inflorescence stem added as synonym of 'peduncle'.

6. New terms - pedicel cortex and sepal vascular system,

pedicel cortex PO:0004722
Def: The primary tissue located between the vascular system and the 
epidermis of the pedicel.

sepal vascular system, PO:0004723
Def: Vascular system of the sepal.

7. New term - hypocotyl-root junction PO:0004724

Def: Junction point of the embryonic root and hypocotyl.
Note: the decision was to add this term under 'embryo axis' and also 
propagate it under shoot.

8. New terms: abaxial and adaxial leaf primorduim

abaxial side of leaf primorduim PO:0004725
Def: The abaxial/outer side of the leaf primordium that becomes the 
abaxial/lower leaf blade

adaxial side of leaf primorduim PO:0004726
Def: The adaxial/inner side of the leaf primordium that becomes 
adaxial/upper leaf blade.

Best Regards,

Katica
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Katica Ilic             		katica at acoma.stanford.edu
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