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类似MdMYB44的果通过果中的MdPYL8-MdPP2CA模块积极调节盐和干旱耐受性

Cui Chen¹, Zhen Zhang¹, Ying-Ying Lei¹

¹College of Horticulture, Shenyang Agricultural University, 120 Dongling Road, Shenyang, Liaoning, 110866, China.

The Plant journal : for cell and molecular biology

|December 16, 2023

概括

过度表达MdMYB44-like通过调节酸 (ABA) 信号来增强植物的盐和干旱耐受性. 这种转录因子与ABA受体MdPYL8和负调节器MdPP2CA形成了一个调节循环,以维持应激反应平衡.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

酸 (ABA) 对于植物对盐和干旱等非生物压力的反应至关重要.
在压力下控制ABA信号的精确分子机制仍然不完全理解.

研究的目的:

研究R2R3-MYB转录因子MdMYB44-like在植物应激耐受性中的作用.
阐明涉及MdMYB44-like在ABA信号传递中的分子相互作用和调节途径.

主要方法:

果和Arabidopsis thaliana的遗传转化导致MdMYB44类的过度表达.
对基因转录和蛋白质与蛋白质相互作用的分析.
评估对盐和干旱压力的生理反应.

主要成果:

过度表达MdMYB44-like在转基因植物中显著改善了盐和干旱耐受性.
发现MdMYB44-like可以抑制MdPP2CA的转录,这是ABA信号的负调节器.
MdMYB44类与ABA受体MdPYL8相互作用,形成一个增强MdPP2CA促进体抑制的复合体,MdPP2CA在存在ABA.CA时破坏了这种相互作用.

结论:

MdMYB44-like在调节ABA介导的盐和干旱耐受性方面发挥着关键作用.
一个涉及MdMYB44类,MdPYL8和MdPP2CA的调节循环精确地控制在压力条件下的ABA信号平衡.
这项研究揭示了一种新的监管模块,用于增强植物应激弹性.

关键词:

像MdMYB44一样的MdMYB44 在MdPP2CA中使用.在MdPYL8中使用.阿布西斯酸是什么?阿布西斯酸是什么果果果果是什么意思耐旱耐受性耐旱耐受性盐的耐受性盐的耐受性

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