病毒诱导的植物挥发物调节昆虫载体的条件偏好,以增强病毒传播
Qingsong Zhang1, Qianjin Wang2, Yujia Xie1
1Shandong Engineering Research Center for Environment-Friendly Agricultural Pest Management, College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao, China.
Pest management science
|November 1, 2025
概括
像绿米叶 (GRLHs) 这样的昆虫媒介只在特定的感染阶段表现出有条件的偏好对矮人病毒 (RDV) 感染的植物. 植物挥发性物质,如2-heptanone,影响GRLH行为,帮助RDV传播.
科学领域:
- 植物病原体相互作用
- 昆虫-载体行为.
- 化学生态化学生态学
背景情况:
- 持久性植物病毒依赖昆虫载体进行传播.
- 昆虫载体经常显示有条件的宿主偏好,根据病毒获取改变行为.
- 偏好转变的时间和植物挥发性物质在这一过程中的作用尚不清楚.
研究的目的:
- 调查绿米叶 (GRLHs) 传染米矮病毒 (RDV) 的条件偏好的时间动态.
- 为了确定病毒诱导的植物挥发物是否影响GRLH条件偏好的启动.
主要方法:
- 使用GRLHs,RDV和大米植物的观测研究.
- 在RDV感染期间,随着时间的推移对GRLH食偏好的分析.
- 气色谱-质谱法 (GC-MS) 用于识别诱导的植物挥发物.
- 行为测试用于评估GRLH对特定挥发物的反应.
主要成果:
- GRLHs并不总是显示有条件偏好;它在感染后大约30天出现,持续5天.
- RDV感染诱导了来自大米植物的2-heptanone,2-heptanol和α-cedrene的排放.
- 2-heptanone吸引了非病毒性GRLH,并排斥了病毒性GRLH;α-cedrene吸引了病毒性GRLH.
- 这三种挥发性物质的混合物吸引了非病毒性GRLH到受感染的植物,并从未受感染的植物中排斥了病毒性GRLH.
结论:
- 对RDV感染植物的GRLH条件偏好是特定阶段的.
- 诱导植物挥发物 (2-heptanone,2-heptanol,α-cedrene) 调节GRLH行为,促进RDV的获取和传播.
- 针对这些挥发物提供了一个窗口,通过操纵载体种群来控制病毒传播.
相关概念视频
00:56Viral Structure
73.6K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
73.6K
01:29Subviral Agents
447
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
447