Identification of mutations conferring insecticide-insensitive AChE in the cotton-melon aphid, Aphis gossypii Glover

A - Papers appearing in refereed journals

Andrews, M. C., Callaghan, A., Field, L. M., Wiliamson, M. S. and Moores, G. D. 2004. Identification of mutations conferring insecticide-insensitive AChE in the cotton-melon aphid, Aphis gossypii Glover. Insect Molecular Biology. 13 (5), pp. 555-561.

AuthorsAndrews, M. C., Callaghan, A., Field, L. M., Wiliamson, M. S. and Moores, G. D.
Abstract

We have identified two mutations in the ace1 gene of Aphis gossypii that are associated with insensitivity of acetylcholinesterase (AChE) to carbamate and organophosphate insecticides. The first of these, S431F (equivalent to F331 in Torpedo californica), is associated with insensitivity to the carbamate insecticide pirimicarb in a range of A. gossypii clones. The S431F mutation is also found in the peach-potato aphid, Myzus persicae (Sulzer), and a rapid RFLP diagnostic allows the identification of individuals of both aphid species with a resistant genotype. This diagnostic further revealed the presence of S431 in several other pirimicarb-susceptible aphid species. The serine at this position in the wild-type enzyme has only been reported for aphids and provides a molecular explanation of why pirimicarb has a specific aphicidal action. A less specific insensitivity to a wide range of carbamates and organophosphates is associated with a second mutation, A302S (A201 in T. californica).

KeywordsBiochemistry & Molecular Biology; Entomology
Year of Publication2004
JournalInsect Molecular Biology
Journal citation13 (5), pp. 555-561
Digital Object Identifier (DOI)doi:10.1111/j.0962-1075.2004.00517.x
PubMed ID15373812
Open accessPublished as non-open access
Funder project or code438
514
ISSN09621075
PublisherWiley

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