Comprehensive Analysis of the R2R3-MYB Transcription Factor Gene Family in Salvia miltiorrhiza and the Regulatory Role of SmMYB50 in Salvianolic Acid Metabolism - Huiyan Fan; Jingzhi Zhou; Yiling Ying; Kaijie Tang; Jiayi Han; Qiuying Wang; Guoyin Kai (Plant Molecular Biology Reporter, 2026)