OsGRF11通过与GF14e相互作用并影响吉伯雷林信号传递来调节细胞分裂和延长
Ruihan Xu1, Jianyu An1, Yijie Wang1
1College of Agriculture, Nanjing Agricultural University, Nanjing 210095, People's Republic of China.
Plant physiology
|November 13, 2025
概括
米生长调节因子11 (OsGRF11) 对于干的延长至关重要. 在OsGRF11中发生的突变会通过影响吉伯雷林信号传递和细胞生长导致半矮体.
科学领域:
- 植物分子生物学 植物分子生物学
- 遗传学 是一个遗传学.
- 植物生理学 植物生理学
背景情况:
- 增长调节因子 (GRF) 是植物特有的转录因子,对生长和发育至关重要.
- 吉伯雷林 (GA) 是一个关键的植物激素,调节植物的高度.
研究的目的:
- 用CRISPR/Cas9.9来研究大米GRF基因的功能.
- 阐明OsGRF11在米生长和GA信号传递中的作用.
主要方法:
- 在大米 (Oryza sativa) 中进行CRISPR/Cas9基因组编辑.
- 对淘汰突变物体的表型分析.
- 共同免疫沉质谱 (Co-IP/MS) 用于识别蛋白质相互作用.
- 分析与细胞扩张和GA信号传递相关的基因表达.
主要成果:
- OsGRF11的突变导致了显著的半矮体表型,细胞大小和数量减少.
- OsGRF11淘汰会降低大米对外源性吉伯雷林的敏感性.
- OsGRF11与14-3-3蛋白GF14e进行物理相互作用,与GA信号元件SLR1和GID2.2形成一个复合体.
- OsGRF11突变导致细胞扩张和GA诱导基因的下调.
结论:
- OsGRF11在调节大米茎长度方面发挥着至关重要的作用.
- OsGRF11可能通过与GF14e,SLR1和GID2.2的蛋白质复合体形成来调解GA信号.
- 这种相互作用影响下游基因表达,控制细胞扩张和生长.
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