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通过 SlMYB99 介导的奥素和酸在番茄中对抗性地调节甲酸生物合成

Xin Xu¹, Baowen Huang¹, Xu Fang¹

¹Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing, 400044, China.

The New phytologist

|May 29, 2023

概括

这项研究揭示了auxin和abscisic酸如何调节番茄植物中 Askorbic acid (AsA) 生物合成. 一个关键模块,包括SlmAPK8,SlARF4和SlMYB99/11,控制AsA的积累,这对植物发育和承受压力至关重要.

科学领域:

植物生物学植物生物学
生物化学生物化学
分子遗传学分子遗传学

背景情况:

亚酸 (AsA) 是植物和人类中重要的水溶性抗氧化剂.
了解AsA生物合成调节对于开发具有增强营养价值的作物至关重要.
植物激素在植物发育和应激反应中起着至关重要的作用.

研究的目的:

为了阐明番茄中 Askorbic 酸 (AsA) 生物合成的调节机制.
为了确定关键的基因和蛋白质相互作用参与AsA积累.
了解植物激素,特别是auxin和abscisic酸在调节AsA水平中的作用.

主要方法:

通过 SlARF4 和 SlMYB99.9 进行了研究的转录调节.
分析了SlmAPK8在酸化和激活SlmYB99.9中的作用.
检查了SlmYB99和SlmYB11.11之间的蛋白质-蛋白质相互作用.
研究了奥素和酸对AsA生物合成基因 (GPP,GLDH,DHAR) 的影响.

主要成果:

SlARF4通过转录抑制SlmYB99,该基因激活AsA生物合成基因.
SlMAPK8可化并增强SlmYB99的活性.
SlMYB99 和 SlMYB11 相互作用,以协同调节 AsA 合成基因.
素和酸通过SlMAPK8-SlARF4-SlMYB99/11通路对抗调节AsA生物合成.

结论:

一种新型的依赖于auxin/abscisic acid的调节模块 (SlMAPK8-SlARF4-SlMYB99/11) 控制了番茄中的AsA生物合成.
这一途径对于植物发育期间的AsA积累和干旱耐受性至关重要.
这些发现为培育含有AsA含量较高的番茄提供了见解.

关键词:

阿布西斯酸是什么?阿布西斯酸是什么亚斯科布酸是什么亚斯科布酸辅助剂辅助剂辅助剂基因激活蛋白酶激酶的作用因子在这里,我们可以看到茄,番茄,番茄.转录因子的转录因子

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