Plant odour plumes as mediators of plant-insect interactions
Plant odour plumes as mediators of plant-insect interactions
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DOI：
10.1111/brv.12043
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发表时间：
2014-02-01
影响因子：
10
通讯作者：
Hilker, Monika
中科院分区：
文献类型：
--
作者：
Beyaert, Ivo;Hilker, Monika
在信息素交流方面，昆虫嗅觉沿气味羽流的定向已经得到了深入的研究，但关于植物气味羽流(POP)如何影响昆虫寻找寄主植物的嗅觉搜索，人们知之甚少。这项审查的主要目的是研究持久性有机污染物在吸引昆虫方面的作用。首先，我们考虑气味来源和环境的参数，这些参数决定了气味羽流的大小、形状和结构，我们将这一知识应用于持久性有机污染物。其次，我们比较了昆虫信息素羽流和POP的特征。我们提出了一个流行的概念，即昆虫对植物的嗅觉定向。我们认为：(I)昆虫通过植物挥发性成分识别持久性有机污染物，这些挥发性成分的浓度高于阈值检测下限，并且出现在指示来源的定性和定量混合中；(Ii)对持久性有机污染物的精细结构的感知使昆虫能够将持久性有机污染物与非特定气味背景和其他干扰羽流区分开来；以及(Iii)昆虫可以跟踪几种持久性有机污染物的来源，如果这传递了更可靠的信号或指示了更合适的资源，则可能会留下一个持久性有机污染物的踪迹并切换到另一个。这里提出的POP概念可能是研究嗅觉介导的植物-昆虫相互作用的有用工具。
Insect olfactory orientation along odour plumes has been studied intensively with respect to pheromonal communication, whereas little knowledge is available on how plant odour plumes (POPs) affect olfactory searching by an insect for its host plants. The primary objective of this review is to examine the role of POPs in the attraction of insects. First, we consider parameters of an odour source and the environment which determine the size, shape and structure of an odour plume, and we apply that knowledge to POPs. Second, we compare characteristics of insect pheromonal plumes and POPs. We propose a POP concept' for the olfactory orientation of insects to plants. We suggest that: (i) an insect recognises a POP by means of plant volatile components that are encountered in concentrations higher than a threshold detection limit and that occur in a qualitative and quantitative blend indicating a resource; (ii) perception of the fine structure of a POP enables an insect to distinguish a POP from an unspecific odorous background and other interfering plumes; and (iii) an insect can follow several POPs to their sources, and may leave the track of one POP and switch to another one if this conveys a signal with higher reliability or indicates a more suitable resource. The POP concept proposed here may be a useful tool for research in olfactory-mediated plant-insect interactions.