花LlHSFC2与HSFA协调,以平衡热应激反应并提高耐热性
Ze Wu1,2,3, Ting Li1,2, Liping Ding1,2
1Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Key Laboratory of Biology of Ornamental Plants in East China, National Forestry and Grassland Administration, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China.
The New phytologist
|January 7, 2024
概括
我们确定了一种的热诱导性热应激转录因子C2 (LlHSFC2),它增强了耐热性. LlHSFC2与其他热应激转录因子一起起作用,提高了植物在热应激下的生存能力.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物生理学 植物生理学
- 遗传学 遗传学 是一个
背景情况:
- 热应激转录因子 (HSF) 调节植物对热的反应.
- 类A和B的HSF已经得到了很好的研究,但类C的HSF仍未得到充分的探索.
- 了解新型HSF对于提高作物弹性至关重要.
研究的目的:
- 为了研究的热诱导HSFC2同类物 (LlHSFC2) 在热耐受性中的作用.
- 阐明LlHSFC2功能背后的分子机制.
- 评估LlHSFC2在提高作物耐热性方面的潜力.
主要方法:
- 在百合花,阿拉比多普西斯和烟草中克隆和描述LlHSFC2的基因.
- 亚细胞局部化和交换活化试验.
- 过度表达和基因沉默实验.
- 使用酵母二混合和共免疫沉的蛋白质蛋白相互作用研究.
主要成果:
- LlHSFC2定位在细胞核和细胞质中,通过结合热应激元素来抑制转录.
- 在转基因植物中,LlHSFC2的过度表达增强了耐热性,而沉默降低了耐热性.
- LlHSFC2与各种HSFs (HSFA1,HSFA2,HSFA3) 相互作用,并充当转录协活性剂.
- 与单独LlHSFA3A相比,LlHSFC2和LlHSFA3A的同时表达显著提高了耐热性.
- 热应力调节了LlHSFC2相互作用,促进了与可诱导热的HSFA的联合激活.
结论:
- LlHSFC2在调节植物热应激反应和维持耐热性方面发挥着至关重要的作用.
- LlHSFC2通过与HSFA合作,起到协作者的作用.
- LlHSFC2 是一个有前途的候选人,用于增强耐热度的育种作物.
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