小说CRISPR/Cas9衍生的小麦的等位基因:对粉和微生物组影响的耐药性
Jovana Eskildsen1, Menghui Dong1, Tobias Hanak1
1Department of Agroecology, Aarhus University, 4200 Slagelse, Denmark.
International journal of molecular sciences
|February 27, 2026
概括
研究人员使用CRISPR/Cas9.9开发了具有防菌能力的新大麦品种. 这种粉状菌抵抗策略对根微生物群的影响有限,提供了一个有前途的疾病管理解决方案.
科学领域:
- 植物病理学 植物病理学
- 微生物学 微生物学
- 遗传学 是一个遗传学.
背景情况:
- 粉病对温带地区的大麦产量产生重大影响.
- 基于抗局部或 (mlo) 的抗性提供了持久的,广泛的频谱控制.
- 菌根突变对根系相关微生物组的影响在很大程度上是未知的.
研究的目的:
- 为了产生新的mlo突变大麦品种,增强对粉状菌的抵抗力.
- 调查mlo淘汰对根微生物群多样性和组成的影响.
- 在MLO蛋白中识别功能重要区域.
主要方法:
- 用CRISPR/Cas9基因编辑来创建mlo突变大麦系.
- 突变系被评估为对Blumeria hordei的耐药性.
- 根微生物组分析涉及测序和DESeq2在现场条件下进行差异丰度测试.
主要成果:
- 产生了五个新的mlo耐药系,包括具有细胞外域改变的突变物.
- 突变系表现出明显减少的B. hordei殖民 (0.5-5%).
- 没有观察到总体微生物α和β多样性的显著变化,尽管一些种类表现出时间依赖的变化.
结论:
- 克里斯普尔/Cas9有效地产生了大麦中基于mlo的粉状菌的耐药性.
- 在MLO蛋白的细胞外区域中的特定残留物对抗性具有功能性重要性.
- 微生物突变对大麦根微生物群的多样性和组成的影响有限.
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