GrainGenes Reference Report: GDV-23-2723
Reference
GDV-23-2723
Title
The SAND domain protein ULTRAPETALA1 acts as a trithorax group factor to regulate cell fate in plants
Journal
Genes and Development
Year
2009
Volume
23
Pages
2723-2728
Remark
Discusses transcription factor / regulator : ULT
Author
Carles CC Fletcher JC
Abstract
During development, trithorax group (trxG) chromatin remodeling complexes counteract repression by Polycomb group (PcG) complexes to sustain active expression of key regulatory genes. Although PcG complexes are well characterized in plants, little is known about trxG activities. Here we demonstrate that the Arabidopsis SAND (Sp100, AIRE-1, NucP41/75, DEAF-1) domain protein ULTRAPETALA1 (ULT1) functions as a trxG factor that counteracts the PcG-repressive activity of CURLY LEAF. In floral stem cells, ULT1 protein associates directly with the master homeotic locus AGAMOUS, inducing its expression by regulating its histone methylation status. Our analysis introduces a novel mechanism that mediates epigenetic switches controlling post-embryonic stem cell fates in plants.
External Databases
https://www.ncbi.nlm.nih.gov/pubmed/19952107
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: GDV-23-2723
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||