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        Inheritance of L1014F and M918T sodium channel mutations associated with pyrethroid resistance in Myzus persicae

        Author
        Eleftherianos, Ioannis
        Foster, Stephen P.
        Williamson, Martin S.
        Denholm, Ian
        Attention
        2299/11492
        Abstract
        Two amino acid substitutions (L1014F and M918T) in the voltage-gated sodium channel confer target-site resistance to pyrethroid insecticides in the peach potato aphid, Myzus persicae. Pyrethroid-resistant and -susceptible M. persicae clones with various combinations of these mutations were crossed under laboratory conditions, and the genotypes of aphid progeny were analysed by direct DNA sequencing of the IIS4-S6 region of the sodium channel gene. Segregation patterns showed that in aphids heterozygous for both L1014F and M918T, both mutations were present in the same resistance allele. Despite these mutations appearing largely recessive in other pest species, such aphids exhibited strong resistance to pyrethroids in leaf-dip bioassays. These results have important implications for the spread and management of pyrethroid resistance in field populations.
        Publication date
        2008-10-23
        Published in
        Biology Letters
        Published version
        https://doi.org/10.1098/rsbl.2008.0225
        Other links
        http://hdl.handle.net/2299/11492
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