Organ number: input needed please

[Doug howe]

You asked for input..so here is my fish-centric input on flower petals.

The structure you show under "Current proposed structure" seems to imply 
that each petal of the flower is an organ.  In my plant-naieve view it 
seems like the flower itself would be the organ and the petals would be 
parts of the organ..kind of like lobes of the liver or something.

I like the structure you suggest at the bottom as it is more direct and 
appears to address more directly the observed role of the mutant genes 
in regulating petal number. 

-Doug

Tanya Berardini wrote:
> Hi Development groupies,
>
> Jen, Suparna and I have been struggling with a couple of development 
> terms and I'd appreciate your input to help us resolve it.  I've also 
> posted this on the SF item but since you're not all likely to be 
> following the planty terms, you're getting an extra special email from 
> me.
>
> Gory details:
>
> http://sourceforge.net/tracker/index.php?
> func=detail&aid=1438331&group_id=36855&atid=440764
>
> Short summary:  Wt Arabidopsis flowers are radially symmetric and have 
> 4 petals.  There are Arabidopsis mutants that have fewer petals than 
> the wt.  There are also Arabidopsis mutants that have more petals that 
> the wt.    How do we represent the processes that the gene products 
> are involved in?
>
> Current proposed structure:
>
> [i]pattern specification GO:0007389       
> ---[i] determination of organ number; NEW
> ------[i]determination of floral organ number; NEW
> ---------[i] determination of petal number ;  NEW
>
> ---[i] flower development GO:0009908
> ------[p]determination of floral organ number ; NEW
> ---------[i] determination of petal number; NEW
>
> ------[i] petal formation GO:0048451
> ------------[p] determination of petal number; NEW
> ------------[p] petal development; NEW
>
> But these terms are still too general.  What I'd like to add are terms 
> like:
> [i[ determination of petal number; NEW
> --[p] regulation of petal number; NEW
> ----[i] negative regulation of petal number; NEW
> ----[i] positive regulation of petal number; NEW
>
>
> Any objections to this (last) set of terms?  I'd much rather have 
> these strings than 'regulation of determination of petal number' or 
> 'regulation of petal number determination'.
>
> You can respond  in return to this email and I'll add it to the SF 
> item or you can post directly to the SF item.
>
> Thanks for your time,
>
> Tanya
>
>