Epigenetically regulated transcriptional repressor, BASIC PENTACYSTEINE1 (BPC1) acts together with polycomb repressive complex 2 (PRC2) to suppress camalexin biosynthesis in Arabidopsis.

Abstract excerpt

Camalexin is a phytoalexin produced by plants of the Brassicaceae family, including the model species Arabidopsis thaliana, and its biosynthesis is tightly regulated to balance growth and defense. Here, we identify BASIC PENTACYSTEINE 1 (BPC1) as a key negative regulator of camalexin biosynthesis. Transcriptome analyses of bpc1-1 and bpc1-1;bpc2-1 mutants revealed both distinct and overlapping functions of BPC1...

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