负责使用效率差异的OsNLP4的自然变异在两种大米亚种中存在差异
Jie Wu1,2, Ying Song3, Guangyu Wan3
1Division of Life Sciences and Medicine; Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale; MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics; University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, China. wujie199104@163.com.
Nature communications
|August 18, 2025
概括
科学家们确定了OsNLP4中的遗传变异,可以提高利用效率 (NUE) 和作物产量. 在日本大米品种中引入标志性等位基因显著提高了谷物生产和NUE,为可持续农业提供了一条道路.
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:
- 利用效率 (NUE) 对作物产量和可持续农业至关重要,在印加大米和日本大米亚种之间观察到显著差异.
- 了解NUE变异的遗传基础是提高作物表现的关键.
研究的目的:
- 确定导致印加大米和日本大米亚种之间的NUE差异的遗传因素.
- 研究OsNLP4在代谢中的功能作用及其对作物产量和NUE的影响.
主要方法:
- 在OsNLP4基因中识别编码区域单核酸多态 (SNP).
- 对SNP对OsNLP4与酸盐反应元素 (NREs) 的结合亲和力的影响分析.
- 在不同气条件下的日本大米和实地试验中,OsNLP4指标基因基因的侵入.
- 在Arabidopsis的异质表达,以评估功能性保护.
主要成果:
- 在OsNLP4中,有三个编码区域SNP被确定为印加-日语NUE分歧的关键驱动因素.
- OsNLP4指标基因表现出对NREs的增强结合,导致代谢和铁平衡基因的放大激活.
- 在日本品种XS134中侵入OsNLP4指标等位基因导致谷物产量和NUE增加了12-25%.
- 将OsNLP4指示基因基因与平衡铁受精的联合应用进一步提高了30-32%的NUE.
结论:
- 这项研究解决了印加-日文NUE分歧的关键遗传基础,确定了OsNLP4变异.
- OsNLP4 indica基因基因为商用日本大米品种提高产量和NUE提供了经过验证的策略.
- OsNLP4 indica 作为一种有价值的跨物种遗传资源,用于推进可持续农业.
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