Fw: Wheat anatomy (fwd)

[Pankaj Jaiswal]

Katica Ilic wrote:

> Hi Victoria,
> 
> I looked through your list shortly after I received it, just didn't
> have time to reply. As I mentioned in my earlier e-mail, most of the terms
> (39 terms exactly) are already in the PO. Remaining three terms are not in the PO,
> and one sould be introduced, term pulvinus, to which I provided definition
> from K Esau.
> 
> New term: pulvinus
> 
> Definition: An enlargement of the petiole of a leaf, or petiolule of a
> leaflet, at its base. A structure that has a role in the movements of a
> leaf
> or leaflet. (def from K Esau).
> 
> I need to see where exactly this term would go into Plant Structure
> Ontology.
> 

By your definition, it is the swollen part of the petiole. Whereas in 
cereal crops, the leaf does not have a petiole. All they have is a leaf 
sheath and leaf lamina.  However sheath can be regarded as a structural 
homolog of petiole. I guess the wheat people are calling is a different 
structure found at the base of the leaf sheath and the structure seems 
to play a role in gravitropism.. I looked at fig-1 of the following 
reference
http://archiv.fgk.org/01/BLT/dispersion/

Kaufman et al http://www.jstor.org/view/00029122/di001875/00p0367d/0 are 
calling it "Leaf sheath pulvinus".

Looks like it can have the following lineage in ontology

leaf
..[p] petiole
......[p] pulvinus (PO:new term)
..........[i] leaf sheath pulvinus (PO:new term)
..[p] leaf sheath
......[i] leaf sheath pulvinus (PO:new term)


More refs:
http://jxb.oupjournals.org/cgi/content/full/52/358/1029
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11537463&dopt=Abstract
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8490136&dopt=Abstract



> The last two are terms 'crease' and term 'beard'. I need to find out if
> they can be synonyms of the existing terms.
> 

If I am not wrong, the "beard" is a synonym for "awn".

"crease is a particular type of morphological character found in grains 
of Triticeae. I suggest creating a new term.

Suggested lineage in PO
	Seed
	..[p]..crease
definition: the indentation on the ventral side of the seed as found in 
the members of Triticeae


I found one more term "brush" under "seed"
It is often called as bristle, but in order to avoid having confusion 
between bristle leaf and bristles found on seed, my suggestion is to 
call it "seed bristle"

seed bristle: fine hairs on the distal end of the seed as found in the 
members of Triticeae

	Seed
	..[p]..seed bristle (synonym: brush)