Stress-induced activation of heterochromatic transcription

ABSTRACT: Constitutive heterochromatin comprising the centromeric and telomeric parts of chromosomes includes DNA marked by high levels of methylation associated with histones modified by repressive marks. These epigenetic modifications silence transcription and ensure stable inheritance of this inert state. Although, environmental cues can alter epigenetic marks and lead to modulation of the transcription of genes located in euchromatic parts of the chromosomes, there is no evidence that external stimuli can globally destabilize silencing of constitutive heterochromatin. We have found that heterochromatin-associated silencing in Arabidopsis plants subjected to a particular temperature regime is released in a genome-wide manner. This occurs without alteration of repressive epigenetic modifications a

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Etienne Bucher 

PROVIDER: E-GEOD-23243 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress