new term: carpel anlagen

[Pankaj Jaiswal]

All I request is a term to annotate the DL gene's expression. Definition 
can be modified based on your expert opinions. I am sure people will be 
searching for 'carpel anlagen' after reading this paper. So the best 
would be include these authors in your discussion, since they used it.

Pankaj

Felipe Zapata wrote:

> Not an expert either, but from the definition Pankaj suggests it is not 
> too clear to me what exactly an anlagen is. Isn't it just a primordium?? 
> also a group of undifferentiated cells that later become differentiated 
> can be anything...(at least  to me). The group of cells that will become 
> the eye isn't just the eye primordium??  Pankaj suggests a 
> temporal difference between anlagen and primordium, isn't it just a 
> delusion?
> 
> F 
> 
> On Feb 14, 2006, at 9:43 AM, Pankaj Jaiswal wrote:
> 
>> I am not an expert on this. Therefore please read the text from the 
>> citation below. Carpel anlagen is a presumptive region. Primordium 
>> comes after the anlagen is recognized in terms of development.
>>
>>
>> as far as definition of anlagen is concerned take a look at this
>>
>> Of German origin the term anlagen refers to any group of relatively 
>> undifferentiated cells that is destined to become a particular group 
>> of differentiated cells at a later time in development. It is used to 
>> identify distinct cell groups in fly development and also in 
>> vertebrate development for example the "optic anlagen" is the group of 
>> cells that will become the eye in many vertebrates. The term is 
>> related to fatemaps, defined cell lineages, and differentiation.
>> www.smbs.buffalo.edu/bch/Courses/bch512/definitions2.htm
>>
>> Pankaj
>>
>> katica at acoma.stanford.edu <mailto:katica at acoma.stanford.edu> wrote:
>>
>>> Pankaj,
>>> I must admit, never heard of 'carpel anlagen', but how is this 
>>> different from 'carpel primordium'?
>>> Isn't 'primordium' what 'analgen' means ? (just looking at Merriam 
>>> Webster on-line)
>>> Katica
>>> On Tue, 14 Feb 2006, Pankaj Jaiswal wrote:
>>>
>>>>
>>>> I need a new term to describe expression of DL gene in rice. The 
>>>> term is carpel anlagen.
>>>>
>>>> definition: A presumptive region (carpel anlagen) on the floral 
>>>> meristem, where carpel primordia would initiate.
>>>> ref: PMID: 14729915
>>>>
>>>>
>>>> Here is the cited text from
>>>> Yamaguchi et al, Plant Cell 16:500-509 (2004)
>>>> The YABBY Gene DROOPING LEAF Regulates Carpel Specification and 
>>>> Midrib Development in Oryza sativa
>>>> http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14729915&dopt=Abstract 
>>>> <http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14729915&dopt=Abstract> 
>>>>
>>>> 'DL expression was detected first in a few cells in the flower 
>>>> meristem at the lemma side (Figure 4E) and then in cells at the 
>>>> flank of the meristem (Figure 4F). These DL expression domains 
>>>> corresponded to the presumptive region (carpel anlagen), where 
>>>> carpel primordia would initiate. Shortly after this expression, 
>>>> carpel primordia began to form. At this stage, DL was expressed 
>>>> specifically and uniformly in carpel primordia (Figures 4G to 4I). 
>>>> No expression was detected in the flower meristem (Figures 4E and 
>>>> 4F) or the ovule primordium (Figures 4G to 4I). By contrast, 
>>>> expression of DL was not observed in dl-sup1 mutants throughout 
>>>> flower development (data not shown). Thus, the expression domains of 
>>>> DL are restricted to the carpel anlagen and the carpel primordia, 
>>>> and these expression patterns of DL are consistent with its specific 
>>>> role in carpel development.'
>>>>
>>>>