.... In Arabidopsis thaliana , miR172 is expressed in the inner floral whorls where it downregulates the class A gene APETALA 2 ( AP2 ). However, what controls this predominantly inner whorl-specific expression of miR172 is not known. We show that the LEUNIG (LUG) and SEUSS (SEU) co-repressors repress miR172...

...Vaniyambadi V. Sridhar; Anandkumar Surendrarao; Zhongchi Liu The transcriptional repression of key regulatory genes is crucial for plant and animal development. Previously, we identified and isolated two Arabidopsis transcription co-repressors LEUNIG ( LUG ) and SEUSS ( SEU ) that function together...

... it uses for activation in non-SOPs. We show that de-repression of even a single N pathway target gene in the SOP can extinguish the SOP cell fate. Finally, we define crucial roles for the adaptor protein Hairless and the co-repressors Groucho and CtBP in conferring repressive activity on Su(H) in the SOP...