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

[Pankaj Jaiswal]

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
************************