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酸盐运输体NRT2.1直接对抗PIN7介导的辅酶运输,以适应根生长

Yalu Wang¹, Zhi Yuan¹, Jinyi Wang¹

¹State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Frontiers Science Center for Molecular Design Breeding (MOE), China Agricultural University, Beijing 100193, China.

Proceedings of the National Academy of Sciences of the United States of America

|June 12, 2023

概括

植物根通过一种涉及酸盐运输体NRT2.1和辅酶运输的机制适应低酸盐的可用性. 这一发现解释了植物如何调节根生长的可塑性,以应对.

科学领域:

植物生物学植物生物学
分子植物生理学分子植物生理学
营养信号传递营养信号传递

背景情况:

酸盐 (NO3-) 是植物必需的源.
植物根系适应不同酸盐的可用性,这个过程受到植物激素auxin的影响.
控制酸盐诱导的根适应的分子机制尚未完全理解.

研究的目的:

为了确定控制根适应低酸盐条件的遗传因素在Arabidopsis.
阐明酸盐运输和辅酶信号在根部发育中的分子相互作用.

主要方法:

基因查以识别Arabidopsis thaliana中的低酸盐耐药突变物.
对*lonr2*突变的表征,包括对酸盐输送器NRT2.1功能的分析.
调查极素运输动态和PIN7素出口商的作用.

主要成果:

在高亲和酸盐输送器NRT2.1.1,*lonr2*突变是有缺陷的.
*lonr2*突变体表现出受损的极性辅酶运输和改变根对低酸盐的反应.
NRT2.1直接与auxin出口者PIN7相互作用,根据酸盐含量调节其活动.

结论:

作为对酸盐可用性的反应,NRT2.1作为辅酶运输的直接调节者.
这种依赖于酸盐的辅酶运输调节对于根的发育可塑性至关重要.
这些发现揭示了植物适应环境营养物质波动的新机制.

关键词:

作为辅助运输的工具.酸盐酸盐的使用方法根生长适应根生长适应

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