树冠病毒操纵大米的挥发性排放,保护昆虫载体免受野外自然敌人的侵害
Qing Liu1, Qian Wang1,2, Qiong Li1
1State Key Laboratory of Animal Biodiversity Conservation and Integrated Pest Management, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
Science advances
|January 7, 2026
概括
病毒通过抑制甲基酸盐 (MeSA) 排放来破坏植物防御,这会损害自然害虫控制,并有助于病毒传播. 恢复MeSA水平可以帮助管理昆虫载体.
科学领域:
- 植物病理学 植物病理学
- 昆虫与病毒的相互作用
- 化学生态化学生态学
背景情况:
- 载体传播的植物病毒依赖昆虫载体进行传播.
- 植物病毒通常会抑制宿主防御,以增强载体的生存和传播.
- 植物病毒对挥发性介导间接防御的影响尚不清楚.
研究的目的:
- 研究大米病毒对挥发性有机化合物 (VOC) 排放的影响.
- 确定甲基酸盐 (MeSA) 在植物病毒-昆虫相互作用中的作用.
- 探索病毒策略来操纵宿主防御和增强传播.
主要方法:
- 实地实验评估了病毒感染的米植物中的MeSA排放.
- 挥发性有机化合物 (VOC) 的分析及其生态功能.
- 研究病毒操纵植物信号通路的分子机制,重点是OsMYC2和OsBSMT1.
主要成果:
- 米病毒显著抑制甲基酸盐 (MeSA) 排放.
- 降低的MeSA损害了卵寄生虫的招募,这些寄生虫是昆虫载体的天然敌人.
- 病毒向OsMYC2转录因子,降低MeSA生物合成的调节,并在不同病毒和载体中保持这种策略.
- 现场应用MeSA恢复了寄生虫的吸引力,并抑制了载体种群.
结论:
- 植物病毒采用一种策略,通过抑制MeSA排放来抑制间接防御.
- 在这种病毒操纵中,MeSA充当了关键的生态信号.
- MeSA应用显示了对载体传播植物病毒的可持续控制的潜力.
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