通过RNA干扰对AisHSP19.6的抑制增加了Agrotis ipsilon中的三种杀虫剂的敏感性
Yun-Fei Shao1, Jia-Min Yu1,2, Jia-Qi Xing1
1MOE Key Laboratory of Agri-products Quality and Biosafety, School of Plant Protection, Anhui Agricultural University, Hefei, Anhui, China.
Archives of insect biochemistry and physiology
|November 18, 2025
概括
害虫Agrotis ipsilon中的一个小热冲击蛋白 (HSP),AisHSP19.6,可以防止杀虫剂诱导的氧化应激. 沉默这个基因会增加幼虫的死亡率,这表明它是害虫控制的目标.
科学领域:
- 分子生物学分子生物学
- 昆虫学 昆虫学是一门学科.
- 毒理学 毒理学 毒理学
背景情况:
- 热冲击蛋白 (HSP) 对昆虫防御环境压力因素如杀虫剂至关重要.
- 在保护农业害虫Agrotis ipsilon免受特定杀虫剂的影响方面,HSP的作用尚不清楚.
研究的目的:
- 为了识别和描述Agrotis ipsilon中的一个小热冲击蛋白 (sHSP).
- 调查AisHSP19.6在对杀虫剂诱导的氧化应激反应中的功能及其对杀虫剂敏感性的影响.
主要方法:
- 在Agrotis ipsilon幼虫中对AisHSP19.6的鉴定和基因表达分析.
- 幼虫暴露于杀虫剂 (phoxim,lambda-cyhalothrin,chlorantraniliprole) 和过氧化,以评估AisHSP19.6的转录.
- 通过RNA干扰 (RNAi) 来抑制AisHSP19.6的表达.
- 在沉默和对照幼虫中对昆虫杀虫剂暴露后的幼虫死亡率的评估.
主要成果:
- 在Agrotis ipsilon中发现了一种新的sHSP基因,AisHSP19.6,在第六阶段在幼虫中肠中表达的峰值.
- 暴露于杀虫剂 (福西姆,兰巴达-西哈洛,兰地利) 和H2O2注射显著提高了AisHSP19.6的转录.
- AisHSP19.6提供了对氧化应激的保护,但没有代谢测试的杀虫剂.
- 通过RNAi介导的AisHSP19.6沉默导致暴露于phoxim,lambda-cyhalothrin和chlorantraniliprole的幼虫的死亡率显著增加.
结论:
- AisHSP19.6在保护Agrotis ipsilon幼虫免受常见杀虫剂诱导的氧化压力方面发挥着至关重要的作用.
- 这些发现凸显了sHSPs在这种害虫中对杀虫剂敏感性的参与.
- AisHSP19.6代表了开发基于RNAi的害虫防治策略的潜在目标,以对抗Agrotis ipsilon.
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