nodule

[Sue Rhee]

Hi, Jeff

It seems like Pankaj's latest proposal addresses your comments well. What
are your thoughts on that?

something like:

root
-nodule
--[is a] adventitious root nodule (synonym: stem nodule)

Sue

On Mon, 14 Mar 2005, Jeff J. Doyle wrote:

> This is as much as I know about these nodules, too.  It has been
> pointed out to me by Ann Hirsch (UCLA) that calling them "stem"
> nodules is somewhat misleading since they still form on roots, albeit
> adventitious ones.  But the differences between these nodule types
> suggest that some distinction may be useful.
>
> --Jeff
>
> >It seems there is. I am not an expert, here is what I found about
> >Sebastania:
> >
> >Sesbania rostrata is a native legume of West Africa. It forms a symbiotic
> >relationship with Azorhizobium caulinodans and is renowned for it's stem
> >nodulation. Both stem and root nodules fix nitrogen however root nodules
> >form at the curled root hair while stem nodules occur at the sites of
> >adventitious root primordia via "crack" entry. The stem nodules unlike the
> >root nodules contain functioning chloroplasts in the nodule cortex and are
> >therefore capable of carbon fixation.
> >
> >http://www.personal.dundee.ac.uk/~rparsons/sesbania.htm
> >
> >
> >Katica
> >
> >
> >On Fri, 11 Mar 2005, Sue Rhee wrote:
> >
> >>  Are there any anatomical, morphological, lineage differences between the
> >>  nodules in the primary/lateral root and the 'stem' nodules in the
> >>  adventitious root? It seems like the introduction of 'stem nodule' for the
> >>  nodules that are not really part of stem could lead to some confusion.
> >>
> >>  Sue
> >>
> >>  On Fri, 11 Mar 2005, Katica Ilic wrote:
> >>
> >>  > Hi Jeff,
> >>  >
> >>  > Thanks for your comment.
> >>  >
> >>  > Would it be more appropriate to have 'root nodule' instead?
> >>  > Actually to instantiate term 'nodule' to 'root nodule' and 'stem
> >>  > nodule'?
> >>  >
> >>  > Katica
> >>  >
> >>  > On Fri, 11 Mar 2005, 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
> >>  > >
> >>  > >
> >>  > > --
> >>  > > Jeff J. Doyle
> >>  > > Professor, L. H. Bailey Hortorium, Department of Plant Biology,
> >>  > > Cornell University
> >>  > > office: 259 Plant Science Building
> >>  > > tel: 607 255-7972 (lab: 607 255-1953); fax: 607-255-5407
> >>  > > http://www.plantbio.cornell.edu/faculty.php?PB=jjd5
> >>  > >
> >>  > > mailing address:
> >>  > >
> >>  > > Department of Plant Biology
> >>  > > 228 Plant Science Building
> >>  > > Cornell University
> >>  > > Ithaca, NY 14853-4301
> >>  > >
> >>  >
> >>  > --------------------------------------------------------------------------
> >>  > 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.
> >>  > --------------------------------------------------------------------------
> >>  >
> >>  >
> >>
> >>
> >>-----------------------------------------------------------------------------
> >>  Sue Rhee                        	rhee at acoma.stanford.edu
> >>  The Arabidopsis Information Resource	URL: www.arabidopsis.org
> >>  Carnegie Institution of Washington	FAX: +1-650-325-6857
> >>  Department of Plant Biology		Tel: +1-650-325-1521 ext. 251
> >>  260 Panama St.
> >>  Stanford, CA 94305
> >>  U.S.A.
> >>
> >>-----------------------------------------------------------------------------
> >>
> >>
> >
> >--------------------------------------------------------------------------
> >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.
> >--------------------------------------------------------------------------
>
>
> --
> Jeff J. Doyle
> Professor, L. H. Bailey Hortorium, Department of Plant Biology,
> Cornell University
> office: 259 Plant Science Building
> tel: 607 255-7972 (lab: 607 255-1953); fax: 607-255-5407
> http://www.plantbio.cornell.edu/faculty.php?PB=jjd5
>
> mailing address:
>
> Department of Plant Biology
> 228 Plant Science Building
> Cornell University
> Ithaca, NY 14853-4301
>

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Sue Rhee                         	rhee at acoma.stanford.edu
The Arabidopsis Information Resource	URL: www.arabidopsis.org
Carnegie Institution of Washington	FAX: +1-650-325-6857
Department of Plant Biology		Tel: +1-650-325-1521 ext. 251
260 Panama St.
Stanford, CA 94305
U.S.A.
-----------------------------------------------------------------------------