The R2R3-MYB transcription factor ScMYB20 negatively regulates drought and salt tolerance through a dual-repression of ScCHALCONE SYNTHASE-1 (ScCHS1)-mediated flavonoid biosynthesis in the desert moss Syntrichia caninervis.

Jiang-Yuan Xiao Yan Liang Jia Liu Ming-Hui Yang Yu-Qing Liang Yi-Gong Zhang

Sep 2026 · Journal of Experimental Botany · 0 citations

Medicine

TL;DR

A dual-repression module is defined (ScMYB20-ScTTG1-ScCHS1) that fine-tunes flavonoid flux under abiotic stress, and provide evolutionary and mechanistic insights into how R2R3-MYB repressors evolved to balance metabolic investment and stress survival in land plants.

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