六酸盐信号调节了Arabidopsis thaliana的横向根的形成
Stefania Morales-Herrera1,2,3,4, Joris Jourquin1,2, Frederic Coppé1,2
1Department of Plant Biotechnology and Bioinformatics Ghent University, Ghent B-9052, Belgium.
概括
糖信号Trehalose-6-phosphate (T6P) 通过调节主激酶SNF1相关激酶-1 (SnRK1) 和拉巴胺素的标 (TOR) 来控制根的分支. 辅酶通过影响根细胞中的T6P水平来影响这个过程.
科学领域:
- 植物生物学 植物生物学
- 分子信号传输的方法
- 农业科学 农业科学
背景情况:
- 植物根对于营养吸收,农业产量和生态系统功能,如碳封存至关重要.
- 根部发展和分支需要大量的能源投资,但糖和能量信号通路的整合仍然不清楚.
研究的目的:
- 阐明糖信号分子三-6酸盐 (T6P) 在调节根枝分支中的作用.
- 调查T6P,主激酶SNF1相关激酶-1 (SnRK1) 和拉巴胺素的标 (TOR) 和植物激素辅酶在根部发育中的相互作用.
主要方法:
- 信号通路的综合基因和化学调制.
- 使用基因向和光激活释放分析三糖-6酸盐 (T6P) 水平.
- 通过auxin.研究T6P降解酶的转录调节.
主要成果:
- 增加的T6P水平通过抑制SnRK1和激活TOR,促进根的分支.
- 辅酶调节T6P在侧根 (LR) 形成中的作用,通过降低LR细胞中T6P降解剂三酸盐酸酶B的下调.
- 在LR形成过程中确定了连接T6P,SnRK1,TOR和auxin的调节网络.
结论:
- 三糖-6酸盐 (T6P) 作为一个关键的糖信号,将能量状态与根枝分支相结合.
- 奥素和T6P信号通路之间的相互作用微调根结构.
- 这项研究揭示了一种对植物根部发育和农业生产率至关重要的能量平衡网络.
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