操纵宿主植物偏好通过病毒诱导其昆虫载体嗅觉系统的变化来操纵宿主植物偏好
Shupei Ai1, Chang Luo1, Xiaoqing Yao1
1National Key Laboratory of Green Pesticide, Guangzhou 510642, China; Key Laboratory of Crop Integrated Pest Management in South China, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China.
Current biology : CB
|September 8, 2025
概括
南方大米黑条纹矮人病毒 (SRBSDV) 通过破坏免疫嗅觉通路来重新编程植物的行为. 这种病毒操纵通过改变昆虫宿主对未感染植物的偏好来增强传播.
科学领域:
- 植物病理学 植物病理学
- 昆虫的行为昆虫的行为
- 分子病毒学分子病毒学.
背景情况:
- 植物病毒通过宿主植物间接操纵昆虫载体.
- 病毒对载体行为的直接调节机制尚不清楚.
研究的目的:
- 阐明SRBSDV如何直接改变植物的行为并增强传播.
- 研究SRBSDV诱导的载体宿主偏好的变化背后的分子机制.
主要方法:
- 研究了SRBSDV P8蛋白与Sogatella furcifera Pelle激酶之间的相互作用.
- 分析了这种相互作用对Toll信号通路和背部相关免疫因子 (DIF) 活性的影响.
- 评估了嗅觉受体表达 (Or86,Or127) 和植物行为方面的变化.
- 利用基因淘汰实验来确认特定嗅觉受体的作用.
主要成果:
- SRBSDV P8蛋白抑制佩尔基因酶,抑制DIF酸化和核转位.
- 免疫抑制降低了Or86的调节,并提高了Or127的调节,将植物的偏好转变为健康的植物.
- 淘汰Or86或Or127消除了行为转变并减少了病毒传播.
结论:
- SRBSDV采用三方机制,劫持免疫信号以改变载体的嗅觉并促进传播.
- 这项研究揭示了病毒传播的新型分子策略,并确定了控制的潜在目标.
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