渗透胁迫下精准调控根系生长
区别于以往仅依赖ABA信号通路的PIN蛋白调控，该成果通过SnRK2.5激酶直接磷酸化PIN2，将渗透胁迫信号与生长素运输动态偶联，实现不依赖ABA的根系适应调控新路径。
张淑娟 · Gao, Yu · Liao, Qi · 李文艳 · Siqi, Yuan · 张文静 · Shen, Like · Kudla, Jörg · 章文华 · 张群
Molecular Plant 2025
Osmotic stress-activated SnRK2.5 directly phosphorylates PIN2 at Ser237 and Ser259
Mutating these phosphorylation sites impairs PIN2-dependent auxin redistribution
thereby compromising root tropic responses and reducing osmotic stress tolerance