在Solanum nigrum中,第一个细胞染色体P450介导的非点抗甲的分子基
Wen Chen1, Haifang Lv2, Mingwei Du3
1College of Agriculture, Tarim University, Alaer 843300, China; Key Laboratory of Genetic Improvement and Efficient Production for Specialty Crops in Arid Southern Xinjiang of Xinjiang Corps, Alaer 843300, China.
Pesticide biochemistry and physiology
|July 31, 2025
概括
黑夜 (Solanum nigrum) 的甲抗性是由增强的新陈代谢驱动的,而不是目标部位的变化. 细胞染色体P450酶,特别是SnCYP706A-1,是这种杂草的关键.
科学领域:
- 农业科学 农业科学
- 植物科学 植物科学
- 杂草科学 杂草科学
背景情况:
- 在Solanum nigrum中对甲的耐药性威胁到棉花生产.
- 中国人群的抵抗机制以前是未知的.
研究的目的:
- 研究Solanum nigrum中甲抗性的机制.
- 确定耐药性的遗传和代谢基础.
主要方法:
- 全植物剂量反应生物测试.
- 对α-tubulin的分子分析.
- 液体染色学-质谱学 (LC-MS). 液体染色学-质谱学.
- 酶抑制和活性测定.
- 分子对接和模拟.
- 酵母的功能验证.酵母的功能验证.
主要成果:
- 在Solanum nigrum种群XJ-R中显示出中度的pendimethalin耐药性 (5.77倍).
- 在α-tubulin中没有发现突变;代谢是关键.
- 细胞P450介导的新陈代谢是主要的机制.
- SnCYP706A-1的上调与耐药性有关.
结论:
- 在Solanum nigrum中,甲耐药性主要是由于增强的代谢解毒 (NTSR).
- 细胞染色体P450酶,特别是SnCYP706A-1,发挥着至关重要的作用.
- 这些发现需要重新评估除草剂管理和基于P450的诊断.
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