Synergistic manipulations of plant and insect defences

A - Papers appearing in refereed journals

Bingham, G., Alptekin, S., Delogu, G., Gurkan, O. and Moores, G. D. 2014. Synergistic manipulations of plant and insect defences. Pest Management Science. 70 (4), pp. 566-571. https://doi.org/10.1002/ps.3575

AuthorsBingham, G., Alptekin, S., Delogu, G., Gurkan, O. and Moores, G. D.
Abstract

BACKGROUND
It has been demonstrated previously that cis-jasmone acts as an elicitor of plant defence mechanism(s) by inducing secondary metabolism. It has also been demonstrated that temporal synergism can result in hypersensitive insect pests due to the inhibition of metabolic enzymes.
RESULTS
Laboratory bioassays demonstrated that pre-exposure of insects by piperonyl butoxide followed by cis-jasmone treatment of crops, reduced Aphis gossypii on cotton by 80% and Myzus persicae on sweet pepper by 90%. By microencapsulating the cis-jasmone and combining with piperonyl butoxide, Bemisia tabaci on tomatoes was reduced by 99%. A field trial with microencapsulated cis-jasmone combined with piperonyl butoxide resulted in a comparable reduction of whitefly egg numbers to that given by the registered rate of imidacloprid, with efficacy of 89% and 93%, respectively.
CONCLUSIONS
If insect defence enzymes are compromised by piperonyl butoxide whilst plant defence is primed by cis-jasmone, there are possibilities of an insecticide-free method of controlling insect pests. The success seems largely dependent upon the toxicity of the plants' secondary chemistry.

KeywordsAgronomy; Entomology
Year of Publication2014
JournalPest Management Science
Journal citation70 (4), pp. 566-571
Digital Object Identifier (DOI)https://doi.org/10.1002/ps.3575
PubMed ID23653417
Open accessPublished as non-open access
FunderDepartment of Environment, Food and Rural Affairs
Plant Biosciences Ltd (PBL)
Funder project or codeCentre for Sustainable Pest and Disease Management (PDM)
The molecular basis of target site and metabolic insecticide resistance
Output statusPublished
PublisherWiley
ISSN1526-498X

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