Xu Ma, Yumeng Jiang, Ziyang Qu, Yunwen Yang, Wenqiao Wang, Yuman He, Yiqi Yu, Ximeng Luo, Yuanyuan Liu, Wenqian Han, Qiqi Di, Lin Yang, Yong Wang
Cadmium (Cd) hampers plant growth and harms photosynthesis. Glutamate (Glu) responds to Cd stress and activates the Ca2+ signaling pathway in duckweed, emphasizing Glu's significant role in Cd stress. In this study, we overexpressed phosphoserine aminotransferase ( PSAT ), a crucial enzyme in Glu metabolism, in duckweed. We investigated the response of PSAT -transgenic duckweed to Cd stress, including growth, Glu metabolism, photosynthesis, antioxidant enzyme activity, Cd2+ flux, and gene expression. Remarkably, under Cd stress, PSAT -transgenic duckweed prevented root abscission, upregulated the expression of photosynthesis ability, and increased Chl a, Chl b, and Chl a + b levels by 13...
February 25, 2024: Plants (Basel, Switzerland)