Bivalent histone modifications: how phytopathogens evade plant immunity.

Bivalent histone modifications regulate gene expression during development, but little is known about their function in plant–microbe interactions. In a recent report, Zhao et al. showed that expression of bivalent chromatin-marked gene 1 (BCG1), containing a pathogen-associated molecular pattern (PAMP) motif, is epigenetically regulated by trimethylation of lysine 4 (H3K4me3) and lysine 27 (H3K27me3) of histone H3 to evade plant immunity. [ABSTRACT FROM AUTHOR]

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