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BMC Biol

Title:		A herbivore-induced plant volatile interferes with host plant and mate location in moths through suppression of olfactory signalling pathways
Author(s):		Hatano E; Saveer AM; Borrero-Echeverry F; Strauch M; Zakir A; Bengtsson M; Ignell R; Anderson P; Becher PG; Witzgall P; Dekker T;
Address:		"Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. edhatano@gmail.com. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. saveer.ahmed@vanderbilt.edu. Present address: Department of Biological Sciences, Vanderbilt University, Nashville, TN, 37235, USA. saveer.ahmed@vanderbilt.edu. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. felipe.borrero@slu.se. Biological Control Laboratory, Colombian Corporation for Agricultural Research, Km 14 via Mosquera-Bogota, Mosquera, Colombia. felipe.borrero@slu.se. Fachbereich Biologie, Universitat Konstanz, 78457, Konstanz, Germany. martin.strauch@lfb.rwth-aachen.de. Present address: Institute of Imaging & Computer Vision, RWTH Aachen University, Kopernikusstr. 16, 52074, Aachen, Germany. martin.strauch@lfb.rwth-aachen.de. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. zakirali@ciitvehari.edu.pk. Present address: Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, Pakistan. zakirali@ciitvehari.edu.pk. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. marie.bengtsson@slu.se. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. rickard.ignell@slu.se. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. peter.anderson@slu.se. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. paul.becher@slu.se. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. peter.witzgall@slu.se. Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Box 102, 23053, Alnarp, Sweden. teun.dekker@slu.se"
Journal Title:		BMC Biol
Year:		2015
Volume:		20150916
Issue:
Page Number:		75 -
DOI:		10.1186/s12915-015-0188-3
ISSN/ISBN:		1741-7007 (Electronic) 1741-7007 (Linking)
Abstract:		"BACKGROUND: Plants under herbivore attack release volatiles that attract natural enemies, and herbivores in turn avoid such plants. Whilst herbivore-induced plant volatile blends appeared to reduce the attractiveness of host plants to herbivores, the volatiles that are key in this process and particularly the way in which deterrence is coded in the olfactory system are largely unknown. Here we demonstrate that herbivore-induced cotton volatiles suppress orientation of the moth Spodoptera littoralis to host plants and mates. RESULTS: We found that (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT), an induced volatile, is key in herbivore deterrence: DMNT suppressed plant odour- and pheromone-induced behaviours. We then dissected the neurophysiological basis of this interaction. DMNT-responding glomeruli were also activated by other plant compounds, suggesting that S. littoralis possesses no segregated olfactory circuit dedicated exclusively to DMNT. Instead, DMNT suppressed responses to the main pheromone component, (Z)-9-(E)-11-tetradecenyl acetate, and primarily to (Z)-3-hexenyl acetate, a host plant attractant. CONCLUSION: Our study shows that olfactory sensory inhibition, which has previously been reported without reference to an animal's ecology, can be at the core of coding of ecologically relevant odours. As DMNT attracts natural enemies and deters herbivores, it may be useful in the development or enhancement of push-pull strategies for sustainable agriculture"
Keywords:		"Alkenes/*pharmacology Animals Behavior, Animal/drug effects/physiology Choice Behavior/drug effects/physiology Herbivory/*drug effects/physiology Olfactory Pathways/*drug effects/physiology Orientation/*drug effects/physiology Spodoptera/drug effects/phys;"
Notes:		"MedlineHatano, Eduardo Saveer, Ahmed M Borrero-Echeverry, Felipe Strauch, Martin Zakir, Ali Bengtsson, Marie Ignell, Rickard Anderson, Peter Becher, Paul G Witzgall, Peter Dekker, Teun eng Research Support, Non-U.S. Gov't England 2015/09/18 BMC Biol. 2015 Sep 16; 13:75. doi: 10.1186/s12915-015-0188-3"