沙佩罗宁介导的冬季寒冷反应通过昼夜时钟组件在阿拉比多普西斯
Goowon Jeong1,2, Myeongjune Jeon1,2, Jinseul Kyung1,2
1School of Biological Sciences, Seoul National University, Seoul, 08826, Korea.
The New phytologist
|March 6, 2026
概括
在植物冬季适应过程中,细胞质的Chaperonin TRiC/CCT复合体至关重要. 它通过控制涉及冷反应和昼夜节律的关键转录因子来调节开花和结耐受性.
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 遗传学 是一个
背景情况:
- 植物利用本地化和寒冷适应来生存冬季,需要长期感知寒冷.
- 这两种关键的寒冷适应策略的整合仍然不太清楚.
研究的目的:
- 为了确定上游调节者,在Arabidopsis中整合本地化和寒冷适应.
- 阐明TRiC/CCT复合体在季节性寒冷适应中的作用.
主要方法:
- 对Arabidopsis突变的遗传分析,特别是一个CCT8误解突变.
- 分子生物学技术包括基因表达分析 (VIN3,CBF,RVE).
- 生物化学测试以评估蛋白质与蛋白质相互作用和积累.
主要成果:
- 一个CCT8突变损害了本地化和冷耐受性,减少了VIN3和CBF表达.
- TRiC/CCT复合体对于REVEILLE (RVE) 转录因子在寒冷期间的积累至关重要.
- TRiC/CCT促进了RVE的丰富性,从而导致VIN3介导的花位置C和CBF依赖的冷耐受性的表观遗传沉默.
- VIN3表达表现出昼夜门,在主观的一天中被寒冷诱导.
结论:
- 该TRiC/CCT复合体作为一个关键的上游调节器,将昼夜信号与季节性寒冷适应联系起来.
- 一个新的TRiC-RVE-VIN3/CBF监管框架协调了植物的发育过程和对冬季条件的应激反应.
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