BnMYB615 Reciprocally Regulates CAT3 and COL2 to Coordinate Drought Tolerance and Flowering Time in Rapeseed

Summary Statement BnMYB615 activates CAT3 and represses COL2, reciprocally regulating drought tolerance and flowering time in rapeseed. Under normal conditions, BnMYB615 maintains a relatively high expression level, sustaining basal ROS scavenging. Under drought, its down‐regulation promotes early flowering to facilitate stress escape.