SmDXS5, acting as a molecular valve, plays a key regulatory role in the primary and secondary metabolism of tanshinones in Salvia miltiorrhiza oleh Da-chuan Zhang, Ling-long Luo, Zhi-rong Wang, Wen-juan Xu, Jun-ling Li, Shu-ting Tan, Jia-hui Wu, Yan Li, Chi Zhang, Chen Liang, Xue-yong Wang