草食动物诱导的植物挥发性转移的高分辨率动力学揭示了邻近植物的时钟反应模式
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Updated: Jul 2, 2025

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Herbivore-induced Blueberry Volatiles and Intra-plant Signaling
Published on: December 18, 2011
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Jamie Mitchel Waterman1, Tristan Michael Cofer1, Lei Wang1
1Institute of Plant Sciences, University of Bern, Bern, Switzerland.
eLife
|February 22, 2024
概括
邻近的植物对草食动物诱导的挥发性物质表现出定时的防御反应,在暴露两天后显示出延迟的烯爆发. 这种反应整合了原始化和直接诱导,揭示了连续的防御策略.
科学领域:
- 植物科学 植物科学
- 化学生态化学生态学
- 植物防御机制 植物防御机制
背景情况:
- 被草食动物攻击的植物会释放挥发性物质,这些挥发性物质可以在邻近的植物中引发或诱导防御.
- 这些植物之间的挥发性通信信号的时间动态尚不清楚.
研究的目的:
- 调查草食动物攻击和未受损害的玉米植物之间的挥发性转移和植物反应的时间模式.
- 阐明接收厂中定时防御反应背后的机制.
主要方法:
- 使用一个定制的,高通量质子转移反应飞行时间质谱 (PTR-ToF-MS) 系统.
- 在模拟草食动物攻击下的玉米植物中监测挥发性排放和植物防御化合物积累.
主要成果:
- 持续暴露于草食动物诱导的挥发物引起了邻近的玉米植物的定时时间反应.
- 在暴露的第二天开始时观察到明显的烯爆发,与延迟的斯酸盐积累一致.
- 这种延迟反应独立于光周期,并归因于压力记忆和二次挥发性物质暴露的组合.
结论:
- 长时间暴露在压力诱导的挥发物中会导致邻近植物的化和直接诱导的连续集成.
- 植物对挥发性线索的防御反应不是瞬间的,而是遵循可预测的时间模式.
- 这项研究阐明了应力挥发物在植物防御中的双重作用,证明了原始化和顺序诱导.
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