Prohexadione calcium boosts pepper stem rigidity: coordinated regulation of hormonal crosstalk and lignin deposition drives xylem reinforcement. - Xia, Ke; Hu, Penghao; Wu, Guoxiu; He, Xueying; Li, Yang; Li, Yanman; Wang, Fan; Cui, Dandan; Li, Shengli (BMC Plant Biology, 2025)