ORBi: Barsics Fanny - Attraction of wireworms to root-emitted volatile organic compounds of barley

Reference : Attraction of wireworms to root-emitted volatile organic compounds of barley


	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Life sciences : Entomology & pest control
	To cite this reference:	http://hdl.handle.net/2268/129531

Title :	Attraction of wireworms to root-emitted volatile organic compounds of barley
Language :	English
Alternative title :	[en] L'attraction des larves de taupins vers les composés organiques volatils racinaires de l'orge
Author, co-author :	Barsics, Fanny [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
	Haubruge, Eric [Université de Liège - ULg > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
	Verheggen, François [Université de Liège - ULg > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Publication date :	24-May-2011
On invitation :	No
Audience :	International
Event name :	63d International Symposium on Crop Protection
Event date :	24 mai 2011 -
Event organizer :	University of Ghent
Event place (city) :	Gand
Event country :	Belgium
Keywords :	[en] Wireworms ; Agriotes sordidus ; root-pest ; rhizosphere ; barley ; chemical ecology
Abstract :	[en] Wireworms, the belowground larvae of click beetles (Coleoptera: Elateridae), represent a threat for various crops, including cereals, potatoes and small fruits, in many countries. In order to promote the development of bio-pesticides or the selection of resistant varieties, studies concerning the close relationship between wireworms and the roots they attack have to be conducted. Indeed, lacks of knowledge in the chemical ecology of these small but consequent pests baffle such achievements. Here, we studied the reactions of wireworms (Agriotes sordidus Illiger) facing root-emitted volatile organic compounds (VOCs) of barley. We first tested the ability of wireworms to orientate towards a blend of volatile compounds emitted by seven day’s old mashed roots of barley grown in vermiculite. We used a Y-shaped horizontal olfactometre, which inferior half was filled with compressed and humidified vermiculite. Wireworms were able to detect blends of volatiles emitted by mashed roots, and to orientate their foraging behaviour toward the emission source. Volatile compounds were identified from barley roots using SPME-GC-MS and several chemicals were identified. This study is part of a larger programme which purpose is the identification of VOCs emitted by the roots of barley and different actors of the rhizosphere, and to assess their semiochemical functions.
Funders :	University of Liege
Name of the research project :	Projet Rhizovol
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/129531

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