nodule

[Jeff J. Doyle]

It looks fine to me, Sue, as best as I can tell.

--Jeff

>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
>>
>
>-----------------------------------------------------------------------------
>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.
>-----------------------------------------------------------------------------


-- 
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