ULTRAPETALA 1, previously known for its role in counteracting Polycomb-mediated silencing, is paradoxically now revealed to be an accessory component of a Polycomb protein complex and to stimulate its...

This study reports a bivalent factor, ULTRAPETALA1, that can counteract as well as promote PRC2 activity at hundreds of developmental genes in Arabidopsis thaliana. The pro-PRC2 activity of ULTRAPETAL...

Polycomb Repressive Complex 2 (PRC2) establishes transcriptional repression through trimethylation of histone H3 lysine 27 (H3K27me3), a modification essential for developmental patterning. Here, we d...

Histone dynamics constitute an important layer of gene regulations associated with development and growth in multicellular eukaryotes. They also stand as key determinants of plant responses to environ...