Tissue-specific expression of FLOWERING LOCUS T in Arabidopsis is maintained independently of polycomb group protein repression. (2011)

First Author: Farrona S

Abstract

The Polycomb Group (PcG) pathway represses transcription through a mechanism conserved among plants and animals. PcG-mediated repression can determine spatial territories of gene expression, but it remains unclear whether PcG-mediated repression is a regulatory requirement for all targets. Here, we show the role of PcG proteins in the spatial regulation of FLOWERING LOCUS T (FT), a main activator of flowering in Arabidopsis thaliana exclusively expressed in the vasculature. Strikingly, the loss of PcG repression causes down-regulation of FT. In addition, our results show how the effect of PcG-mediated regulation differs for target genes and that, for FT expression, it relies primarily on tissue differentiation.

Bibliographic Information

Digital Object Identifier: http://dx.doi.org/10.1105/tpc.111.087809

PubMed Identifier: 21917549

Publication URI: http://europepmc.org/abstract/MED/21917549

Type: Journal Article/Review

Volume: 23

Parent Publication: The Plant cell

Issue: 9

ISSN: 1040-4651