通过BIN2介导的KAN1酸化在的二次生长过程中整合了布拉西诺和奥素信号传递
Wenrong Tan1, Xiaolan Yue1, Yangzhou Pan1
1College of Life Sciences and Agri-Forest, Southwest University of Science and Technology, Mianyang 621010, China.
The Plant cell
|September 22, 2025
概括
一项新的研究揭示了树是如何调节二次生长的. 铜固醇无敏2.1 (BIN2.1) 激酶集成铜固醇 (BR) 和辅酶信号,通过KANADI1 (KAN1) 酸化控制体-体模式.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 树木的二次生长涉及花,变体和树木的协调活动.
- 已知植物激素信号通路调节血管发育,但它们的交叉通话尚未完全理解.
研究的目的:
- 为了阐明brassinosteroid (BR) 和auxin在二次生长过程中的信号交叉声.
- 为了确定关键的分子调节器,整合这些荷尔蒙路径.
主要方法:
- 研究了GSK3激酶PtoBIN2.1在 (Populus tomentosa) 二次生长中的作用.
- 通过PtoBIN2.1.2.1分析了转录因子KANADI1 (KAN1) 的酸化.
- 研究了BIN2.1介导的KAN1酸化对辅酶信号传递和血管发育的影响.
主要成果:
- PtoBIN2.1通过酸化KAN1来整合BR和辅酶信号,这是一个关键的轴决定因素.
- 通过BIN2介导的KAN1酸化稳定了KAN1,通过抑制auxin和向决定因素来促进叶膜发育.
- BR和auxin协同促进细胞的形成,而auxin信号对于BR驱动的二次生长至关重要.
结论:
- 一个BIN2-KAN1调节模块在树中编排了体-体图案.
- 豆通过该模块集成BR和auxin信号,以控制变活动和血管分化.
- 这为植物在二次生长过程中如何平衡叶膜和叶膜生产提供了一个分子机制.
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