OsLHY-OsSCL30/OsDHT1调节级联坐标,通过米中的Pre-mRNA拼接调制,定向日期和植物高度
Yingying Lu1, Yixian Guo2, Rui Gao1
1Zhejiang Key Laboratory of Crop Germplasm Innovation and Utilization, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China.
Journal of advanced research
|November 16, 2025
概括
我们确定了OsSCL30,这是大米中的一种新型拼接因子,它调节了标题日期和植物高度. 这一发现揭示了一个新的OsLHY-OsSCL30-DHT1模块,集成基因转录和拼接,以改善米育种.
科学领域:
- 植物分子生物学 植物分子生物学
- 农业学是一种农业学.
- 遗传学 是一个遗传学.
背景情况:
- 标题日期和植物高度对于大米产量和气候适应性至关重要.
- 前mRNA剪接是植物发育中的关键调节机制,但其在这些特征中的作用尚不清楚.
研究的目的:
- 确定控制大米标题日期和植物高度的新型剪接因素.
- 阐明在米发育过程中化体作用的分子机制.
主要方法:
- 利用了分子遗传学,蛋白质相互作用测试 (酵母二杂交,BiFC),DNA结合测试 (酵母一杂交,双化酶,EMSA).
- 进行基因表达分析,拼接效率测试 (qRT-PCR,RIP) 和评估转基因大米系 (过度表达,基因编辑).
主要成果:
- 鉴定了OsSCL30,一种类似SR的拼接因子,由昼夜调节器OsLHY.激活.
- OsSCL30与DHT1相互作用,调节目标基因的拼接,并通过Ghd7-Ehd1-Hd3a/RFT1通路影响转向日期和植物高度,可能通过strigolactone信号传递.
- 发现了OsLHY和OsSCL30.0之间的转录-拼接反循环.
结论:
- OsSCL30,与DHT1一起,是调节大米标题日期和植物高度的核心结合体组件.
- 发现了一种新的OSLHY-OsSCL30-DHT1模块,集成转录和拼接.
- 为加强米适应和育种计划提供了基础.
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