通过通过CRISPR/Cas9基因编辑调节宿主线索,在中培养Striga耐药性
Sirisha Kaniganti1,2, Sudhakar Reddy Palakolanu1, Benjamin Thiombiano3
1International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, Telangana, 502324, India.
Plant cell reports
|March 27, 2025
概括
使用CRISPR/Cas9技术在中进行基因编辑成功降低了strigolactone (SL) 产量,从而增强了对寄生虫Striga杂草的抵抗力. 这一突破为改善受影响地区的作物产量提供了一个有希望的战略.
科学领域:
- 农业生物技术 农业生物技术
- 植物遗传学 植物遗传学
- 提高作物质量 的方法.
背景情况:
- (Sorghum bicolor L.) 是撒哈拉以南非洲地区的重要食品主食,受到寄生虫杂草Striga.的严重影响.
- 杆菌导致大量的收获损失,影响超过60%的农田,威胁到粮食安全.
- 斯特里戈拉克顿 (SLs) 是植物激素,参与植物发育和宿主-寄生虫相互作用,包括Striga发芽.
研究的目的:
- 通过使用CRISPR/Cas9技术,在中培养持久的Striga耐药性.
- 诱导中关键的strigolactone生物合成基因 (CCD7,CCD8,MAX1和DUF) 的向突变.
- 调查这些基因在SL生产和斯特里加耐药性中的功能性作用.
主要方法:
- 使用CRISPR/Cas9基因编辑,在两种小麦品种中引入了CCD7,CCD8,MAX1和DUF基因的突变.
- 未成熟的胚胎的农细菌介导的转化被用来提供编辑结构.
- 分析包括转换和基因编辑效率评估,突变的分子特征,基因表达分析,表型评估,根液分析和Striga感染测定.
主要成果:
- 在选择的类基因型中实现了高转换 (~70%) 和基因编辑效率 (高达17.5%).
- 在向基因中证实了同卵性功能丧失突变,导致SL生物合成途径基因的表达减少.
- 经过编辑的木种系在根排泄物中显著减少了SL产量,并显示了延迟或减少的Striga出现率.
结论:
- 通过CRISPR/Cas9介导的基因编辑,有效地创造了无转基因的,具有精确突变的抗斯特里加抗性植物.
- 通过向基因编辑来改变SL生产是一种可行的策略,用于开发对Striga感染的持久耐药性.
- 这项研究提供了宝贵的洞察力,了解的SL路径中的特定基因的功能,并提供了一个有前途的工具,用于改善菌易受感染的地区的作物.
关键词:
一个Duf,一个Duff.斯特里加 (Striga) 是一种类动物.这就是CRISPR/Cas9的作用.基因编辑 基因编辑这就是Orobanchol.Sorghum 的意思是 Sorghum 的意思斯特里格洛拉克托尼 (striglolactones) 是一种葡萄糖的成分.更多相关视频
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