Methylation profiling

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MTHFD1 controls DNA methylation in Arabidopsis


ABSTRACT: In order to further investigate silencing mechanisms, we screened a mutagenized Arabidopsis thaliana population for expression of SDCpro-GFP, redundantly controlled by DNA methyltransferases DRM2 and CMT3. We identified the hypomorphic mutant mthfd1-1, carrying a mutation (R175Q) in the cytoplasmic bifunctional methylenetetrahydrofolate dehydrogenase/methenyltetrahydrofolate cyclohydrolase (MTHFD1). Accumulation of homocysteine and S-adenosylhomocysteine, genome-wide DNA hypomethylation, loss of H3K9me, and transposon derepression indicate that S-adenosylmethionine-dependent transmethylation is inhibited in mthfd1-1.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE77966 | GEO | 2016/06/07

SECONDARY ACCESSION(S): PRJNA312219

REPOSITORIES: GEO

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