aleurone (was :RE: Feedback Submission from Plant Ontology Live Site)

[Katica Ilic]

Pankaj,

Dicots have aleurone layer too (for instance, Arabidopsis, see Debeaujon
et al, Plant Physiol, 122:403-413), and I am not sure if the new definition you
suggested is broad enough to include both dicots and monocots (Peter or
Leonore would know this better).

You included reference talking about grain development (Seed Science
Research) and Marty was mainly talking about maize and wheat, so I just
want to make sure that the definition is appropriate and apply to the most
of the flowering plants, and not just monocots.

In fact, it looks like you took the definition from
http://www.wheatbp.net/glossary.htm, and just removed 'in wheat'.

Here is Peter's APWeb definition (since we agreed on using this glossary
whenever is appropriate):

aleurone: the outermost layer(s) of the endosperm, living cells containing
proteins, the other cells being more or less dead and with much thickened
walls, the lumen being more or less occluded e.g. by galactomannans (a
hemicellulose).

We can modify the part that refers to proteins, to make it more
appropriate for grain crops.

Peter and Felipe, do you have any suggestion here?

Katica


On Mon, 30 Aug 2004, Pankaj Jaiswal wrote:

> Hi Marty,
>
> I was the one. The definition was picked up from the glossary given in
> Plant Anatomy by Fahn. However the definition was modified because the
> glossary term was for "aleurone" and not "aleurone layer".
>
> By Fahn:
> Aleurone grain: a characteristic structure of reserve protein present in
> the seeds of numerous plants. In the endosperm of certain plants such
> grains are found in the outermost cell layer which is then termed the
> aleurone layer.
>
> By Essau:
> Aleuron/aleurone: Granules of proteins present in the seeds of numerous
> plants. Usually restricted to the external part, the aleurone layer of
> endosperm as in wheat or other cereals.
>
> If no one objects, I can modify the definition to
>
> The outermost cell layer of the endosperm, usually only one cell thick
> and the only endosperm tissue alive at maturity. The cells of this layer
> are responsible for the de-novo synthesis of enzymes needed at germination.
>
> A good reference is
> Physiology of the aleurone layer and starchy endosperm during grain
> development and early seedling growth: new insights from cell and
> molecular biology
> Ritchie S.; Swanson S.J.; Gilroy S.
> Seed Science Research, September 2000, vol. 10, no. 3, pp. 193-212(20)
> http://www.ingenta.com/isis/searching/Expand/ingenta?pub=infobike://cabi/ssr/2000/00000010/00000003/art00001
>
>
> Marty Sachs wrote:
>
> > Where did the definition for aleurone....
> >
> > The outermost endosperm tissue of the seeds, its cells being
> > characterized by presence of protein bodies containing seed storage
> > proteins.
> >
> > ....contained in...
> >
> > http://amigo.plantontology.org/go.cgi?action=query&view=query&search_constraint=terms&query=PO:0005360
> >
> > ...and...
> >
> > http://amigo.plantontology.org/go.cgi?view=details&search_constraint=terms&depth=0&query=PO:0005360&
> >
> > ....come from?
> >
> > My understanding is more in line with:
> >
> > From: http://www.wheatbp.net/glossary.htm
> >
> > aleurone (Aleurone layer). The outermost cell layer of the endosperm,
> > usually only one cell thick in wheat and the only endosperm tissue alive
> > at maturity. The cells of this layer are responsible for the de-novo
> > synthesis of enzymes needed at germination.
> >
> > At least in maize, 'protein bodies containing seed storage proteins' are
> > in the endosperm proper.
> >
> >         -Marty
> >
> >> From: owner-po-dev at brie4.cshl.org on behalf of Pankaj Jaiswal
> >> Sent: Wed 8/25/2004 11:34 AM
> >> To: po-dev at plantontology.org
> >
> >> Subject: Re: Feedback Submission from Plant Ontology Live Site
> >>
> >
> >>
> >> http://amigo.plantontology.org/go.cgi?action=query&view=query&search_constraint=terms&query=PO:0005360
> >
> >>
> >> These would allow a generic search for "anther" or to a specific one
> >> "anther (sensu Zea)" or by a term_accession (=term_id from flat files).
> >> The link provided by you is going directly to the term detail page where
> >> many of the options are not available.
> >>
> >> -Pankaj
> >>
> >>
> >>
> >> feedback_submission at brie4.plantontology.org wrote:
> >>
> >> >     *** Feedback from Plant Ontology Live Site ***
> >> >
> >
> >> > refer_to_url:
> >> http://amigo.plantontology.org/go.cgi?view=details&search_constraint=terms&depth=0&query=PO:0005360&
> >
> >> >
> >> > comments: Is this the best URL to use to lookup a term when linking
> >> from an external database such as MaizeGDB?
> >> >
> >> > In particular when I wish to be able to access the PO associations
> >> for that term.
> >> >
> >> > What about 'sensu' generics, eg anther.
> >> >
> >> > name: Mary Polacco
> >> >
> >> > email: PolaccoM at missouri.edu
> >> >
> >> > organization:
> >> >
> >> > send_feedback: Send your feedback
> >> >
> >> >
> >>
> >> --
> >> ************************
> >> Pankaj Jaiswal, PhD
> >> G15-Bradfield Hall
> >> Dept. of Plant Breeding
> >> Cornell University
> >> Ithaca, NY-14853, USA
> >>
> >> Tel: +1-607-255-3103
> >>       +1-607-255-4109
> >> Fax: +1-607-255-6683
> >> http://www.gramene.org
> >> ************************
> >
> >
>
> --
> ************************
> Pankaj Jaiswal, PhD
> G15-Bradfield Hall
> Dept. of Plant Breeding
> Cornell University
> Ithaca, NY-14853, USA
>
> Tel: +1-607-255-3103
>       +1-607-255-4109
> Fax: +1-607-255-6683
> http://www.gramene.org
> ************************
>

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Katica Ilic             		katica at acoma.stanford.edu
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