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Comprehensive analysis of silencing mutants reveals complex regulation of the Arabidopsis methylome.

ABSTRACT: Cytosine methylation is involved in various biological processes such as silencing of transposable elements (TEs) and imprinting. Multiple pathways regulate DNA methylation in different sequence contexts, but the factors that regulate DNA methylation at a given site in the genome largely remain unknown. Here we have surveyed the methylomes of a comprehensive list of 86 Arabidopsis gene silencing mutants by generating single-nucleotide resolution maps of DNA methylation. We find that DNA methylation is site specifically regulated by different factors. Furthermore, we have identified additional regulators of DNA methylation. These data and analyses will serve as a comprehensive community resource for further understanding the control of DNA methylation patterning.

SUBMITTER: Stroud H

PROVIDER: S-EPMC3597350 | biostudies-literature | 2013 Jan

REPOSITORIES: biostudies-literature

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Comprehensive analysis of silencing mutants reveals complex regulation of the Arabidopsis methylome.

Stroud Hume H Greenberg Maxim V C MV Feng Suhua S Bernatavichute Yana V YV Jacobsen Steven E SE

Cell 20130111 1-2

Cytosine methylation is involved in various biological processes such as silencing of transposable elements (TEs) and imprinting. Multiple pathways regulate DNA methylation in different sequence contexts, but the factors that regulate DNA methylation at a given site in the genome largely remain unknown. Here we have surveyed the methylomes of a comprehensive list of 86 Arabidopsis gene silencing mutants by generating single-nucleotide resolution maps of DNA methylation. We find that DNA methylat ...[more]

PMID: 23313553

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Comprehensive analysis of silencing mutants reveals complex regulation of the Arabidopsis methylome.

Project description:Cytosine methylation is involved in various biological processes such as silencing of transposable elements (TEs) and imprinting. Multiple pathways regulate DNA methylation in a sequence specific manner. What factors regulate DNA methylation at a given site in the genome largely remains elusive. Here by generating single nucleotide resolution maps of DNA methylation we have surveyed the effect of mutations in a comprehensive list of genes involved in gene silencing in Arabidopsis. We find that DNA methylation is site-specifically regulated by different factors. Furthermore, we have identified novel regulators of DNA methylation. We have generated a comprehensive resource to further understanding the control of DNA methylation patterning.

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