nodule

[Katica Ilic]

It seems we do, if we choose to have root nodule and stem nodule, a
grouping term where all annotations to children terms of nodule would show
up.

Now, where to place generic term 'nodule'? If it goes under the
'sporophyte', it will be a sibling of high nodes, root, shoot, seed and
infructescence.

Katica

On Fri, 11 Mar 2005, Pankaj Jaiswal wrote:

> Perhaps we should rename it to "root nodule" and the ones Jeff is
> suggesting are termed "stem nodules".
>
> This raises a question. Do we need a generic/grouping  term "nodule" of
> which "stem nodule" and "root nodule" are instances. Obviously in the
> ontology these nodules are part_of "stem" and "root" respectively.
>
> -Pankaj
>
> Jeff J. Doyle wrote:
>
> >>
> >> PO:0003023
> >> name: nodule
> >> def: Enlargement or swelling on the roots of plants, particularly in the
> >> Fabaceae, inhabited by nitrogen-fixing bacteria.
> >
> >
> > There are also what are called "stem nodules" in some legumes (the
> > papilionoid genus Sesbania is the prime example, but the caesalpiniod
> > Neptunia also has nodules on floating stems).  Stem nodules are
> > associated with adventitious roots, however, so the definition is not
> > actually incorrect, even if the position of the roots in question is not
> > typical.
> >
> > --Jeff
> >
> >
>

--------------------------------------------------------------------------
Katica Ilic             		katica at acoma.stanford.edu
The Arabidopsis Information Resource 	Tel: (650) 325-1521 ext. 253
Carnegie Institution of Washington 	FAX: (650) 325-6857
Department of Plant Biology 		URL: http://arabidopsis.org/
260 Panama St.
Stanford, CA 94305
U.S.A.
--------------------------------------------------------------------------