转录因子MdWRKY9参与果中莉酸介导的盐应激耐受性
Jiahao Zhao1,2, Shuhui Zhang3, Zhicheng Yu1,2
1College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, Shandong, China.
Horticulture research
|April 30, 2025
概括
雅斯蒙酸 (JA) 信号释放MdWRKY9以提高果的盐分耐受性. 这一过程涉及降解JAZ抑制剂,允许MdWRKY9激活MdNHX1和MdSOS2等基因,这些基因对果的质量至关重要.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 无生物压力生理学 生物压力生理学
背景情况:
- 盐应激显著影响果的生长和质量.
- 众所周知,素 (JA) 激素和WRKY转录因子 (TF) 调解植物盐应激反应.
- 在果盐耐受性中,JA介导的WRKY TFs的特定作用仍然在很大程度上未被描述.
研究的目的:
- 为了识别和描述涉及果盐耐受性的WRKY TF.
- 阐明果盐反应中JA介导的WRKYTF调节的分子机制.
- 研究果中JA信号组件和WRKYTFs之间的相互作用.
主要方法:
- 在果中识别和描述MdWRKY9基因.
- 对MdWRKY9在调节Na+/H+抗载体基因 (MdNHX1,MdSOS2) 的作用的分析.
- 使用分子生物学技术研究MdWRKY9,MdJAZ5和MdJAZ10之间的蛋白质-蛋白质相互作用.
- 检查JA信号通路对JAZ蛋白降解和随后的MdWRKY9活性的影响.
主要成果:
- MdWRKY9被确定为增强果盐耐受性的关键TF.
- MdWRKY9直接调节Na+/H+抗载体基因MdNHX1和MdSOS2.2的表达.
- JAZ抑制剂 (MdJAZ5,MdJAZ10) 通过形成一个复合体来抑制MdWRKY9的活性.
- JA信号诱导JAZ抑制剂的降解,释放MdWRKY9以激活盐耐受性基因.
结论:
- MdWRKY9在果中JA介导的盐耐受性中起着至关重要的作用.
- JA-JAZ-WRKY调节模块对于管理果中的盐应激反应至关重要.
- 了解这种途径可以让我们了解在盐水条件下改善果的质量.
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