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Biol Rev Camb Philos Soc

Title:		Plant odour plumes as mediators of plant-insect interactions
Author(s):		Beyaert I; Hilker M;
Address:		"Freie Universitat Berlin, Institut fur Biologie, Haderslebener Str. 9, D-12163, Berlin, Germany"
Journal Title:		Biol Rev Camb Philos Soc
Year:		2014
Volume:		20130528
Issue:		1
Page Number:		68 - 81
DOI:		10.1111/brv.12043
ISSN/ISBN:		1469-185X (Electronic) 0006-3231 (Linking)
Abstract:		"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"
Keywords:		"Animals Behavior, Animal Insecta/*physiology *Odorants Plants/*metabolism Volatile Organic Compounds/chemistry/*metabolism insect orientation olfaction plant odour plume plant volatiles plant-insect interactions;"
Notes:		"MedlineBeyaert, Ivo Hilker, Monika eng Review England 2013/05/30 Biol Rev Camb Philos Soc. 2014 Feb; 89(1):68-81. doi: 10.1111/brv.12043. Epub 2013 May 28"