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Herbivory by a phloem-feeding insect inhibits floral volatile production

Pareja, Martin and Qvarfordt, Erika and Webster, Ben and Mayon, Patrick and Pickett, John and Birkett, Michael and Glinwood, Robert (2012). Herbivory by a phloem-feeding insect inhibits floral volatile production. PloS one. 7:2, e31971
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Official URL: http://dx.doi.org/10.1371/journal.pone.0031971

Abstract

There is extensive knowledge on the effects of insect herbivory on volatile emission from vegetative tissue, but little is
known about its impact on floral volatiles. We show that herbivory by phloem-feeding aphids inhibits floral volatile emission
in white mustard Sinapis alba measured by gas chromatographic analysis of headspace volatiles. The effect of the Brassica
specialist aphid Lipaphis erysimi was stronger than the generalist aphid Myzus persicae and feeding by chewing larvae of the
moth Plutella xylostella caused no reduction in floral volatile emission. Field observations showed no effect of L. erysimimediated
floral volatile emission on the total number of flower visits by pollinators. Olfactory bioassays suggested that
although two aphid natural enemies could detect aphid inhibition of floral volatiles, their olfactory orientation to infested
plants was not disrupted. This is the first demonstration that phloem-feeding herbivory can affect floral volatile emission,
and that the outcome of interaction between herbivory and floral chemistry may differ depending on the herbivore’s
feeding mode and degree of specialisation. The findings provide new insights into interactions between insect herbivores
and plant chemistry.

Authors/Creators:Pareja, Martin and Qvarfordt, Erika and Webster, Ben and Mayon, Patrick and Pickett, John and Birkett, Michael and Glinwood, Robert
Title:Herbivory by a phloem-feeding insect inhibits floral volatile production
Series/Journal:PloS one (11446107)
Year of publishing :2012
Volume:7
Number:2
Page range:e31971
Publisher:Public library of science
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:H Protection of plants and stored products > H10 Pests of plants
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:aphid, flower, volatile
URN:NBN:urn:nbn:se:slu:epsilon-e-808
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-808
ID Code:9332
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
External funders:MISTRA
Deposited By: Dr Robert Glinwood
Deposited On:19 Dec 2012 12:41
Metadata Last Modified:02 Dec 2014 10:54

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