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Volatile exchange between undamaged plants - a new mechanism affecting insect orientation in intercropping

Ninkovic, Velemir and Dahlin, Iris and Vucetic, Andja and Petrović-Obradović, Olivera and Glinwood, Robert and Webster, Ben (2013). Volatile exchange between undamaged plants - a new mechanism affecting insect orientation in intercropping. PloS one. 8:7, 1-9
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Official URL: http://dx.doi.org/10.1371/journal.pone.0069431

Abstract

Changes in plant volatile emission can be induced by exposure to volatiles from neighbouring insect-attacked plants.However, plants are also exposed to volatiles from unattacked neighbours, and the consequences of this have not beenexplored. We investigated whether volatile exchange between undamaged plants affects volatile emission and plant-insectinteraction. Consistently greater quantities of two terpenoids were found in the headspace of potato previously exposed tovolatiles from undamaged onion plants identified by mass spectrometry. Using live plants and synthetic blends mimickingexposed and unexposed potato, we tested the olfactory response of winged aphids, Myzus persicae. The altered potatovolatile profile deterred aphids in laboratory experiments. Further, we show that growing potato together with onion in thefield reduces the abundance of winged, host-seeking aphids. Our study broadens the ecological significance of thephenomenon; volatiles carry not only information on whether or not neighbouring plants are under attack, but alsoinformation on the emitter plants themselves. In this way responding plants could obtain information on whether theneighbouring plant is a competitive threat and can accordingly adjust their growth towards it. We interpret this as aresponse in the process of adaptation towards neighbouring plants. Furthermore, these physiological changes in theresponding plants have significant ecological impact, as behaviour of aphids was affected. Since herbivore host plants arepotentially under constant exposure to these volatiles, our study has major implications for the understanding of howmechanisms within plant communities affect insects. This knowledge could be used to improve plant protection andincrease scientific understanding of communication between plants and its impact on other organisms.

Authors/Creators:Ninkovic, Velemir and Dahlin, Iris and Vucetic, Andja and Petrović-Obradović, Olivera and Glinwood, Robert and Webster, Ben
Title:Volatile exchange between undamaged plants - a new mechanism affecting insect orientation in intercropping
Series/Journal:PloS one (1932-6203)
Year of publishing :2013
Volume:8
Number:7
Page range:1-9
Number of Pages:9
Publisher:Public Library of Science
ISSN:1932-6203
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Agrovoc terms:Plant ecology
Keywords:plant volatile emission, plant ecology
URN:NBN:urn:nbn:se:slu:epsilon-e-1921
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-1921
Additional ID:
Type of IDID
Web of Science (WoS)000323369700029
DOI10.1371/journal.pone.0069431
ID Code:11118
Faculty:NL - Faculty of Natural Resources and Agricultural Sciences (until 2013)
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:22 May 2014 12:34
Metadata Last Modified:02 Dec 2014 11:05

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