new term request: secondary parietal cell layer

[Pankaj Jaiswal]

I hope this statement helps.

-Pankaj

cited from:
http://www.genetics.org/cgi/content/abstract/153/2/933
Genetics, Vol. 153, 933-941, October 1999, Copyright © 1999
The mac1 Mutation Alters the Developmental Fate of the Hypodermal Cells 
and Their Cellular Progeny in the Maize Anther

'In each anther lobe the primary parietal cell and adjacent cells 
(RAGHAVAN 1988 ) form the primary parietal cell layer and the cells of 
this layer undergo a periclinal division resulting in the formation of 
the two secondary parietal layers. The outermost of these two layers 
differentiates into the endothecium, while the inner layer again divides 
periclinally to form the middle layer externally and the tapetum 
internally (KIESSELBACH 1949 ; DAVIS 1966 ). The archesporial cells 
divide one or more times and their cellular progeny differentiate into 
the microsporocytes (KIESSELBACH 1949 ). See RAGHAVAN 1988  for a 
detailed analysis of this developmental sequence in rice.'

katica at acoma.stanford.edu wrote:

> 
> This would be more appropriate term for developmental stages ontology, 
> under 'anther development'. There is a term 'B formation of primary 
> parietal and sporogenous cells', perhaps all we need is to add another 
> term, 'formation of secondary parietal cells'.
> 
> Neither parietal cells or sporogenous cell form layers, they appear as a 
> few distinct cells within four corners of anther primordia, with cell 
> lineages that will give rise to particular layers of the anther wall.
> 
> They are certainly not cell types, and it would be wrong to add them as 
> children under cell type node.
> 
> Katica
> 
> On Wed, 1 Feb 2006, Pankaj Jaiswal wrote:
> 
>> I require a new term as follows for curating the rice MSP1 gene 
>> expression (http://www.plantcell.org/cgi/content/abstract/15/8/1728)
>>
>> New term:
>> secondary parietal cell layer [part of anther wall]
>>
>> references
>> http://www.plantcell.org/cgi/content/abstract/15/8/1728
>> http://www.genetics.org/cgi/content/abstract/153/2/933
>> http://aob.oxfordjournals.org/cgi/content/abstract/90/6/701
>> http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=282801
>>
>>
>> However if we are looking at the parietal layer, we nee the following 
>> as well
>>
>> parietal cell (isa cell and part of parietal cell layer)
>>
>>
>>
>>
>>
>>
> 


-- 
Pankaj Jaiswal
G-15, Bradfield Hall
Dept. of Plant Breeding and Genetics
Cornell University
Ithaca, NY-14853, USA

Ph. +1-607-255-3103 / 4199
fax: +1-607-255-6683