Activation of defence in sweet pepper, Capiscum annuum, by cis- jasmone, and its impact on aphid and aphid parasitoid behaviour

A - Papers appearing in refereed journals

Dewhirst, S. Y., Birkett, M. A., Loza-Reyes, E., Martin, J. L., Pye, B. J., Smart, L. E., Hardie, J. and Pickett, J. A. 2012. Activation of defence in sweet pepper, Capiscum annuum, by cis- jasmone, and its impact on aphid and aphid parasitoid behaviour. Pest Management Science. 68 (10), pp. 1419-1429.

AuthorsDewhirst, S. Y., Birkett, M. A., Loza-Reyes, E., Martin, J. L., Pye, B. J., Smart, L. E., Hardie, J. and Pickett, J. A.
Abstract

BACKGROUND: Two important pests of the sweet pepper, Capsicum annuum, are the peach potato aphid, Myzus persicae, and the glasshouse potato aphid, Aulacorthum solani. Current aphid control measures include the use of biological control agents, i.e. parasitic wasps, but with varying levels of success. One option to increase parasitoid efficiency is to activate plant defence. Therefore, sweet pepper plants were treated with the naturally occurring plant defence activator cis-jasmone, and its impact upon the behaviour and development of aphids and aphid parasitoids was investigated. RESULTS: Growth rate studies revealed that the intrinsic rate of population increase of A. solani and M. persicae on sweet pepper plants treated with cis-jasmone (cJSP) was not affected compared with untreated plants (UnSP), but the positive behavioural response of alate M. persicae towards the volatile organic compounds (VOCs) from UnSP was eliminated by cis-jasmone treatment 48 h previously (cJSP48). In addition, the aphid parasitoid Aphidius ervi preferred VOCs from cJSP48 compared with UnSP, and a significant increase in foraging time was also observed on cJSP. Analysis of VOCs collected from cJSP48 revealed differences compared with UnSP. CONCLUSION: There is evidence that treatment with cis-jasmone has the potential to improve protection of sweet pepper against insect pests. (C) Crown copyright 2012. Reproduced with permission of Her Majesty's Stationery Office. Published by John Wiley & Sons, Ltd.

KeywordsAgronomy; Entomology
Year of Publication2012
JournalPest Management Science
Journal citation68 (10), pp. 1419-1429
Digital Object Identifier (DOI)doi:10.1002/ps.3326
PubMed ID22696464
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
Plant Biosciences Ltd (PBL)
Funder project or codeDelivering Sustainable Systems (SS) [ISPG]
Elucidating the chemical ecology of below ground plant-plant communication
Publisher's version
Copyright license
Publisher copyright
Output statusPublished
Publication dates
Online28 Mar 2012
PublisherWiley
ISSN1526-498X

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