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Independently evolved pathogen effectors from three branches of life (ascomycete, eubacteria, and oomycete) converge onto the Arabidopsis TCP14 transcription factor to manipulate host defense. However, the mechanistic basis for defense control via TCP14 regulation is unknown. We demonstrate that TCP14 regulates the plant immune system by transcriptionally repressing a subset of the jasmonic acid (JA)...
Genetic and biochemical evidence supporting CATALASE2 as a salicylic acid (SA) receptor has finally emerged. In this issue of Cell Host & Microbe, Yuan et al. (2017) show that SA binds to CATALASE2 to inhibit auxin and jasmonic acid biosynthetic enzymes as a means to strengthen plant immunity against biotrophic pathogens.
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