The methylation pattern of a cytosine DNA-methyltransferase gene in Arabidopsis thaliana plants
نویسندگان
چکیده
منابع مشابه
Pattern of DNA cytosine methylation in Aeluropus littoralis during temperature stress
DNA methylation as an epigenetic mediator plays the important role in spatial and temporal gene regulation and ensures the stability and the plasticity of organism. In this investigation, methylation sensitive amplification polymorphism (MSAP) were assessed in CCGG sites on a halophytic plant, Aeluropuslittoralis in response to different temperature stresses including freezing...
متن کاملArabidopsis MET1 cytosine methyltransferase mutants.
We describe the isolation and characterization of two missense mutations in the cytosine-DNA-methyltransferase gene, MET1, from the flowering plant Arabidopsis thaliana. Both missense mutations, which affect the catalytic domain of the protein, led to a global reduction of cytosine methylation throughout the genome. Surprisingly, the met1-2 allele, with the weaker DNA hypomethylation phenotype,...
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The target cytosines of (cytosine-5)-DNA methyltransferases in prokaryotic and eukaryotic DNA show increased rates of C-->T transition mutations compared to non-target cytosines. These mutations are induced either by the spontaneous deamination of 5-mC-->T generating inefficiently repaired G:T rather than G:U mismatches, or by the enzyme-induced C-->U deamination which occurs under conditions o...
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Plants are able to acclimate to new growth conditions on a relatively short time-scale. Recently, we showed that the progeny of plants exposed to various abiotic stresses exhibited changes in genome stability, methylation patterns and stress tolerance. Here, we performed a more detailed analysis of methylation patterns in the progeny of Arabidopsis thaliana (Arabidopsis) plants exposed to 25 an...
متن کاملGenetic evidence that DNA methyltransferase DRM2 has a direct catalytic role in RNA-directed DNA methylation in Arabidopsis thaliana.
RNA-directed DNA methylation (RdDM) is a small RNA-mediated epigenetic modification in plants. We report here the identification of DOMAINS REARRANGED METHYLTRANSFERASE 2 (DRM2) in a forward screen for mutants defective in RdDM in Arabidopsis thaliana. The finding of a mutation in the presumptive active site argues in favor of direct catalytic activity for DRM2.
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ژورنال
عنوان ژورنال: IUBMB Life
سال: 1996
ISSN: 1521-6543
DOI: 10.1080/15216549600201832