OsMADS22与OsMADS50相互作用,以调节大米中的花过渡
Dongyang Wang1, Yi Chai1, Suhui Chen1
1Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
Biochemical and biophysical research communications
|March 15, 2025
概括
OsMADS22和OsMADS50通过相互作用来控制关键基因来调节大米开花时间. 它们的相互作用显示了与Arabidopsis相比的物种特异性差异,为花期调节和米粒发育提供了新的见解.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 农业科学 农业科学
背景情况:
- 开花时间对作物产量至关重要,SVP和FLC蛋白质通过抑制SOC1和FT来调节Arabidopsis中的开花时间.
- 米SVP-clade基因OsMADS22作为花过渡的负调节者,但其机制和相互作用尚不清楚.
研究的目的:
- 阐明OsMADS22在调节大米开花时间中的分子机制.
- 为了研究OsMADS22及其SOC1同类物,OsMADS50.0.之间的遗传相互作用.
- 探索花期调节中的特定物种功能差异.
主要方法:
- 酵母两杂交测试以确定蛋白质相互作用.
- 野生型,突变型和过度表达的米系中的基因表达分析.
- 对OsMADS50及其Arabidopsis同类物的亚细胞局部化研究.
主要成果:
- OsMADS22形成同位素并与OsMADS50相互作用,对抗调节开花基因 (OsMADS14, RFT1, Ehd1, Hd3a, OsMADS1).
- OsMADS50与米中的OsMADS22没有遗传表皮性,与Arabidopsis同类物不同.
- 相互作用取决于K-box域;OsMADS50定位在核中,与Arabidopsis中的细胞质SVP形成鲜明对比.
- OsMADS50在米粒发育中也起着重要作用.
结论:
- OsMADS22和OsMADS50形成了一个监管复合体,控制着水开花时间.
- 在大米中的SVP/SOC1同类和Arabidopsis.com之间存在显著的物种特异性功能差异.
- 这项研究提供了关于开花时间调节和OsMADS50在米中的双重作用的新见解.
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