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DNA methylation is antagonistically controlled by DNA methyltransferases and DNA demethylases. The level of DNA methylation controls plant gene expression on a global level. We have examined impacts of global changes in DNA methylation on the Arabidopsis immune system. A range of hypo‐methylated mutants displayed enhanced resistance to the biotrophic pathogen Hyaloperonospora arabidopsidis (Hpa),...
MicroRNAs (miRNAs) are short RNAs involved in gene regulation through translational inhibition and transcript cleavage. After processing from imperfect fold‐back structures, miRNAs are incorporated into RNA‐induced silencing complexes (RISCs) before targeting transcripts with varying degrees of complementarity. Some miRNAs are evolutionarily deep‐rooted, and sequence complementarity with their targets...
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