野生大米GL12协同改善了栽培大米的谷粒长度和盐耐受性
Yanyan Wang1,2,3, Wenxi Chen1,2, Meng Xing1,2
1State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
Nature communications
|November 2, 2024
概括
野生大米基因GL12W通过调节细胞长度和应激反应基因,提高了大米的谷粒长度和盐耐受性. 一种促进物变异影响基因表达和子亚种分歧.
科学领域:
- 植物遗传学 植物遗传学
- 农业科学 农业科学
- 分子生物学分子生物学
背景情况:
- 在环境压力下保持高水产量是一个关键的育种挑战.
- 野生大米的遗传变异有利于作物改善.
- 内部权衡机制往往限制了同时提高产量和耐压力.
研究的目的:
- 调查野生大米GL12W在提高谷物产量和盐分耐受性方面的功能.
- 阐明GL12W对细胞长度和应激反应影响的分子机制.
- 了解GL12W促进体变异在子物种分歧中的作用.
主要方法:
- 在盐应激下对GL12W及其基因 (GS2,NAC5,NCED3) 的基因表达分析.
- 研究GL12W促进体变异与转录因子GIF1和WRKY53.3的相互作用.
- 对不同大米遗传背景的谷粒长度和盐耐受性的表型分析.
主要成果:
- 野生大米GL12W显著改善印加和日本大米的谷粒长度和盐耐受性.
- GL12W通过影响GS2来调节细胞长度,并通过调节NAC5和NCED3.3来增强盐分耐受性.
- 在GL12促进体中的G/T变异会影响GIF1结合和WRKY53抑制,影响基因表达,并导致印加-日本分歧.
结论:
- 野生大米GL12W是一种有价值的遗传资源,可以提高大米谷物产量和盐耐受性.
- 了解GL12W监管机制可以了解收益率压力耐受性权衡.
- 已识别的GL12促进体变异为大米亚种的标记器辅助育种提供了一个目标.
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