针对昆虫草食的土豆植物之间的挥发性介导信号不是对土壤营养素的条件
Lucía Martín-Cacheda1, Carla Vázquez-González2,3, Sergio Rasmann4
1Misión Biológica de Galicia (MBG-CSIC), Apartado de correos 28, Pontevedra, Galicia, 36080, Spain. luciamartincacheda.93@gmail.com.
Journal of chemical ecology
|July 17, 2023
概括
使用挥发性有机化合物 (VOC) 的植物间沟通有助于土豆植物抵抗昆虫. 然而,增加土壤营养素并没有改变这种植物信号或增强害虫抵抗力.
科学领域:
- 植物生态学植物生态学
- 化学生态化学生态学
- 植物与昆虫的相互作用
背景情况:
- 通过挥发性有机化合物 (VOC) 进行植物与植物之间的通信对于防御至关重要.
- 像土壤营养素这样的非生物因素对这种信号传递的影响还不太清楚.
- 了解这些相互作用对于预测植物在不断变化的环境中的反应至关重要.
研究的目的:
- 调查土壤营养水平是否会通过挥发性有机化合物影响植物之间的信号传递.
- 确定土壤营养素如何影响土豆植物对昆虫损害引起的草食植物的抵抗力.
- 评估草食,土壤营养素和VOC介导防御之间的相互作用.
主要方法:
- 用土豆植物 (Solanum tuberosum) 进行温室实验,这些植物暴露于Spodoptera exigua毛虫.
- 对于信号 (发射) 和接收植物,对土壤营养素 (未受精与受精) 的因数操纵.
- 测量发射植物的VOC排放量,并评估接收植物的草食动物水平和幼虫生长.
主要成果:
- 草食会显著改变土豆植物的VOC排放,但这与土壤营养水平无关.
- 从被草食动物破坏的邻居那里接收VOC的植物显示草食性减少,表明成功的信号传递.
- 增加的土壤营养素并没有增强VOC介导的信号或受体植物的诱导抵抗.
结论:
- 马植物表现出VOC介导的诱导耐药性对草食,无论营养丰富.
- 在这种情况下,土壤营养增加似乎没有调节植物-植物信号的有效性.
- 需要进一步的研究来探索不同营养限制和其他非生物因素下的信号.
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