Today''s Page Hits: 28
This page validates as XHTML 1.0, and will look much better in a browser that supports web standards, but it is accessible to any browser or Internet device. It was created using techniques detailed at glish.com/css/.
Wednesday September 13, 2006 In the scr-4, rBRr double mutant there's a restoration of the QC along with additional columella cells but there is no restoration of root size. I'm not sure how this is possible? I would guess that scr is also required for QC maintenance?
In page 1342 top second column, they claim that there is a suggestion that QC cells devide more frequently because ~30% of the rRBr plants showed expression, which I do not find really convincing. But is there really any reason to expect more divisions in these cells (rRBr)?
This is somewhat in relation to Cat's previous questions, it's hard to say if IAA differences are actually playing a role here, especially since there was no difference in root length in relation to the mutants. Is this reflecting more of an energy limitation?
-Ramon
The increase in cell number is not accompanied by cell elongation, so no difference in root growth. This was confusing. SCR is needed for QC maintenance.
If RBR is a repressor of the cell cycle, reducing RBR should increase cell cycle activity. QC should not divide! (or it's not quiescent)
Posted by Niki on September 13, 2006 at 11:25 PM EDT #