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Elife

Title:		Feeding-induced rearrangement of green leaf volatiles reduces moth oviposition
Author(s):		Allmann S; Spathe A; Bisch-Knaden S; Kallenbach M; Reinecke A; Sachse S; Baldwin IT; Hansson BS;
Address:		"Department of Molecular Ecology , Max Planck Institute for Chemical Ecology , Jena , Germany"
Journal Title:		Elife
Year:		2013
Volume:		20130514
Issue:
Page Number:		e00421 -
DOI:		10.7554/eLife.00421
ISSN/ISBN:		2050-084X (Print) 2050-084X (Electronic) 2050-084X (Linking)
Abstract:		The ability to decrypt volatile plant signals is essential if herbivorous insects are to optimize their choice of host plants for their offspring. Green leaf volatiles (GLVs) constitute a widespread group of defensive plant volatiles that convey a herbivory-specific message via their isomeric composition: feeding of the tobacco hornworm Manduca sexta converts (Z)-3- to (E)-2-GLVs thereby attracting predatory insects. Here we show that this isomer-coded message is monitored by ovipositing M. sexta females. We detected the isomeric shift in the host plant Datura wrightii and performed functional imaging in the primary olfactory center of M. sexta females with GLV structural isomers. We identified two isomer-specific regions responding to either (Z)-3- or (E)-2-hexenyl acetate. Field experiments demonstrated that ovipositing Manduca moths preferred (Z)-3-perfumed D. wrightii over (E)-2-perfumed plants. These results show that (E)-2-GLVs and/or specific (Z)-3/(E)-2-ratios provide information regarding host plant attack by conspecifics that ovipositing hawkmoths use for host plant selection. DOI:http://dx.doi.org/10.7554/eLife.00421.001
Keywords:		Acetates/metabolism Animals Brain/*metabolism Cues Datura/*metabolism Female *Herbivory Isomerism Manduca/*metabolism *Oviposition Plant Leaves/*metabolism Signal Transduction *Smell Time Factors Volatile Organic Compounds/*metabolism Ca imaging Datura wr;
Notes:		"MedlineAllmann, Silke Spathe, Anna Bisch-Knaden, Sonja Kallenbach, Mario Reinecke, Andreas Sachse, Silke Baldwin, Ian T Hansson, Bill S eng 293926/ERC_/European Research Council/International Comparative Study Research Support, Non-U.S. Gov't England 2013/05/18 Elife. 2013 May 14; 2:e00421. doi: 10.7554/eLife.00421"