... cues. In recent years, however, it has become evident that the genetic networks that underlie these phase transitions share some common factors. Here, we review recent advances in the field of plant phase transitions, highlighting the role of two microRNAs – miR156 and miR172 – and their respective...

.... 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...

... that act in an antagonistic fashion to specify perianth and reproductive organs, respectively. An apparent paradox was the finding that AP2 mRNA is supposedly uniformly distributed throughout young floral primordia. Although miR172 has a role in preventing AP2 protein accumulation, miR172 was reported...

... in the same tuberization pathway is unknown. Here we show the effect of a microRNA, miR172 , on this developmental event. miR172 levels are higher under tuber-inducing short days than under non-inductive long days and are upregulated in stolons at the onset of tuberization. Overexpression of this microRNA...

... miR172 Meristems provide cells for all the tissues and organs of the plant, and understanding their activity is essential to decipher the evolution of plant architecture ( Sussex and Kerk,2001 ). Meristems can be classified as determinate or indeterminate based on whether they terminate...