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通过HOS15介导的PRR7的转化增加了结耐受性
Yeon Jeong Kim1, Woe Yeon Kim2, David E Somers1
1Department of Molecular Genetics, The Ohio State University, Columbus, OH 43210, USA.
bioRxiv : the preprint server for biology
|July 9, 2024
概括
15号基因 (HOS15) 调节了假反应调节器7 (PRR7) 蛋白质的水平. HOS15控制了PRR7的循环,影响了Arabidopsis的昼夜节律和冷耐受性.
科学领域:
- 植物分子生物学 植物分子生物学
- 循环时钟调节 循环时钟调节
- 寒冷的压力反应反应.
背景情况:
- 假反应调节器7 (PRR7) 对于阿拉比多普西斯的昼夜节律和冷耐受性至关重要.
- PRR7蛋白水平是由蛋白酶体依赖的降解来调节的,但机制尚不清楚.
- 了解PRR7调节是解读寒冷适应路径的关键.
研究的目的:
- 阐明控制PRR7蛋白积累的机制及其在寒冷耐受性中的作用.
- 确定与PRR7相互作用并调节其稳定性的蛋白质.
- 调查PRR7,昼夜时钟和寒冷适应之间的联系.
主要方法:
- 在Arabidopsis中进行双重突变分析.
- 蛋白质与蛋白质相互作用的测试.
- 化测试,ChIP-qPCR,冷耐受性测试和电解质泄漏测试.
主要成果:
- 15号基因 (HOS15) 与PRR7直接相互作用,并控制其蛋白质水平.
- HOS15通过无处不在作用调节PRR7的转换,特别是在黑暗中的低温下.
- hos15突变体表现出改变的PRR7积累,导致冷敏感性增加和CBF/COR基因表达的变化.
结论:
- HOS15充当了全方位酶适配器,调节PRR7的稳定性并影响结耐受性.
- 这种HOS15-PRR7相互作用提供了昼夜系统和寒冷适应途径之间的新联系.
- HOS15对PRR7的调节影响了CBF1和COR15A等关键冷反应基因的转录.
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