Field-evolved resistance to imidacloprid and ethiprole in populations of brown planthopper Nilaparvata lugens collected from across South and East Asia

A - Papers appearing in refereed journals

Garrood, W. T., Zimmer, C. T., Gorman, K. J., Nauen, R., Bass, C. and Davies, T. G. E. 2016. Field-evolved resistance to imidacloprid and ethiprole in populations of brown planthopper Nilaparvata lugens collected from across South and East Asia. Pest Management Science. 72 (1), pp. 140-149.

AuthorsGarrood, W. T., Zimmer, C. T., Gorman, K. J., Nauen, R., Bass, C. and Davies, T. G. E.
Abstract

BACKGROUND We report on the status of imidacloprid and ethiprole resistance in Nilaparvata lugensStal collected from across South and East Asia over the period 2005-2012. RESULTS A resistance survey found that field populations had developed up to 220-fold resistance to imidacloprid and 223-fold resistance to ethiprole, and that many of the strains collected showed high levels of resistance to both insecticides. We also found that the cytochrome P450 CYP6ER1 was significantly overexpressed in 12 imidacloprid-resistant populations tested when compared with a laboratory susceptible strain, with fold changes ranging from ten- to 90-fold. In contrast, another cytochrome P450 CYP6AY1, also implicated in midacloprid resistance, was underexpressed in ten of the populations and only significantly overexpressed (3.5-fold) in a single population from India compared with the same susceptible strain. Further selection of two of the imidacloprid-resistant field strains correlated with an approximate threefold increase in expression of CYP6ER1. CONCLUSIONS We conclude that overexpression of CYP6ER1 is associated with field-evolved resistance to imidacloprid in brown planthopper populations in five countries in South and East Asia.

KeywordsAgronomy; Entomology
Year of Publication2016
JournalPest Management Science
Journal citation72 (1), pp. 140-149
Digital Object Identifier (DOI)doi:10.1002/ps.3980
PubMed ID25612154
Open accessPublished as ‘gold’ (paid) open access
FunderBayer
Biotechnology and Biological Sciences Research Council
Funder project or codeDelivering Sustainable Systems (SS) [ISPG]
Project: 5176
Industry Studentship: Investigating the breakdown of chemical control in brown planthoppers from Asia
Publisher's version
Output statusPublished
PublisherWiley
Copyright licenseCC BY
ISSN1526-498X

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