TY - JOUR TI - Feeding-induced rearrangement of green leaf volatiles reduces moth oviposition AU - Allmann, Silke AU - Späthe, Anna AU - Bisch-Knaden, Sonja AU - Kallenbach, Mario AU - Reinecke, Andreas AU - Sachse, Silke AU - Baldwin, Ian T AU - Hansson, Bill S A2 - Dicke, Marcel VL - 2 PY - 2013 DA - 2013/05/14 SP - e00421 C1 - eLife 2013;2:e00421 DO - 10.7554/eLife.00421 UR - https://doi.org/10.7554/eLife.00421 AB - 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. KW - Manduca sexta KW - plant volatile KW - oviposition KW - Ca imaging KW - Datura wrightii JF - eLife SN - 2050-084X PB - eLife Sciences Publications, Ltd ER -