一对非典型的NLR编码基因在大豆中赋予亚洲大豆的抗性
Qingnan Hao1,2, Hongli Yang2, Shuilian Chen3
1Soybean Genetics and breeding team, Institute of Oil Crops Research, Chinese Academy of Agriculture Sciences, Wuhan, 430062, China.
Nature communications
|April 17, 2024
概括
研究人员确定了一对基因对,Rpp6907-7和Rpp6907-4,为亚洲大豆生 (ASR) 提供了广泛的抗性. 这一发现为开发抗ASR抗性大豆品种提供了途径.
科学领域:
- 植物病理学 植物病理学
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
背景情况:
- 由Phakopsora pachyrhizi引起的亚洲大豆生 (ASR) 严重影响了全球大豆生产.
- 抗性大豆生殖质的有限可用性阻碍了抗性品种的发展.
- 中国大豆土地品种SX6907是唯一已知的完全抵抗ASR的来源.
研究的目的:
- 从SX6907陆地品种中分离和特征化赋予对亚洲大豆生耐药性的基因.
- 了解大豆中对ASR的广泛耐药性背后的遗传机制.
主要方法:
- 对抗性基因Rpp6907-7和Rpp6907-4.4的分离和表征
- 对编码的非典型核酸结合性氨酸丰富重复蛋白 (NLR) 的分析.
- 基因分析以确定每个基因在赋予耐药性和调节信号传递方面的功能.
主要成果:
- 基因对Rpp6907-7和Rpp6907-4被分离并进行了表征.
- 这两种基因都编码非典型的NLR蛋白质,对NLR介导的免疫力至关重要.
- 基因分析显示Rpp6907-7赋予了耐药性,而Rpp6907-4则作为Rpp6907-7信号的抑制剂.
结论:
- 这对Rpp6907基因对为亚洲大豆生提供了广泛的抗性.
- Rpp6907-7是抗性基因,而Rpp6907-4调节了它的活性.
- 这些发现为开发抗ASR抗性大豆新品种带来了巨大的潜力.
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