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The BZR1-interacting WD repeat protein participates in brassinosteroid-dependent growth and stress response in tomato

Liu et al. reveal that BIW negatively regulates BR signaling by promoting BZR1 ubiquitination and degradation, while BIN2 enhances BIW’s stability and activity. Through the BZR1-dependent pathway, BIW inhibits lateral root development and chilling tolerance in tomato, providing a strategy for developing elite crop germplasm by targeted manipulation of BIW.

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