对草甘耐受性转基因大米的培育 BriA15-38
Jiangtao Yang1, Ran Zheng1, Xiaochun Zhang1
1Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory on Molecular Safety Assessment of Agri-GMO, MARA, Beijing, China.
GM crops & food
|January 8, 2026
概括
转基因大米植物被开发为耐受草甘,一种广泛使用的除草剂. 这些植物表达出一种耐药基因,使得在田中有效地控制杂草.
科学领域:
- 农业科学 农业科学
- 生物技术是生物技术.
- 遗传学 是一个遗传学.
背景情况:
- 草甘是一种广谱除草剂,广泛用于农业.
- 它在米种植中的应用受到其对米植物的禁活作用的限制.
- 开发耐草甘米对于在田中有效的化学杂草控制至关重要.
研究的目的:
- 为在田中大规模应用草甘开发耐草甘的水品种.
- 评估引入的抗草甘基因 (aroAA1501) 在赋予耐受性的有效性.
- 为米种植中改善杂草管理策略提供遗传资源.
主要方法:
- 构建含有抗草甘基因aroAA1501的pC33-A15载体.
- 米品种ZH11的农细菌媒介转化,以产生转基因植物.
- 通过种子发芽,水培养和田间喷雾试验评估草甘耐受性.
- 使用qRT-PCR进行基因表达分析,并通过Western blot确认蛋白质.
- 石基米酸含量分析以确认酶活性.
主要成果:
- 成功生成了37种表现出对草甘耐受性的转基因大米植物.
- 在转基因大米中确认了aroAA1501基因和蛋白质的成功表达.
- 证明aroAA1501蛋白作为EPSPS的功能,在草甘暴露下保持代谢活性.
- 在转基因大米中确定了强大的草甘耐受性,耐受度高达8000 ppm.
结论:
- 开发的转基因大米表现出显著的草甘耐受性.
- 这项研究为制造耐草甘米提供了宝贵的遗传资源.
- 这一进步为水田中有效的化学杂草管理提供了潜在的解决方案.
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