NDLI: Contributions of three-site mutations in acetylcholinesterase and cytochrome P450 to genetic variation in susceptibility to organophosphate insecticides within a natural population of Drosophila melanogaster

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Contributions of three-site mutations in acetylcholinesterase and cytochrome P450 to genetic variation in susceptibility to organophosphate insecticides within a natural population of Drosophila melanogaster

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Contributions of three-site mutations in acetylcholinesterase and cytochrome P450 to genetic variation in susceptibility to organophosphate insecticides within a natural population of Drosophila melanogaster

Content Provider	Springer Nature Link
Author	Miyo, Takahiro Oguma, Yuzuru
Copyright Year	2009
Abstract	In this study, we attempted to elucidate the two resistance factors conferring resistance to organophosphates within the Katsunuma population of Drosophila melanogaster (Meigen), one of which has been mapped on the second chromosome and the other on the third chromosome. With regard to the second chromosome factor, we tested susceptibility to malathion of 54 recombinant inbred lines with recombination between ltd and vg. Analyses of variance (ANOVAs) showed highly significant variation in susceptibility to malathion between recombinant lines. In addition, susceptibility of the second-chromosome resistant line to malathion was increased with additional application of piperonyl butoxide, suggesting a member of the Cyp gene family located between ltd and vg. With regard to the third-chromosome factor, we conducted inhibition assays of acetylcholinesterase (AChE) with respect to fenitroxon and carbaryl, to evaluate the contribution of mutated AChE to organophosphate resistance within the Katsunuma population. I 50 values of resistant lines, isolated from this population, were about 15 times higher for fenitroxon, and about two times higher for carbaryl, than those of susceptible lines, suggesting the contribution of mutated AChE to organophosphate resistance within the Katsunuma population. We further investigated the genetic variation in the acetylcholinesterase (Ace) gene within the newly collected Katsunuma population, by using the allele-specific polymerase chain reaction (PCR) approach, and revealed that within this population there were high frequencies of resistant-type mutations at three sites in the Ace gene, which play critical roles in altering sensitivity of AChE to organophosphate and carbamate insecticides.
Starting Page	159
Ending Page	169
Page Count	11
File Format	PDF
ISSN	14383896
Journal	Population Ecology
Volume Number	52
Issue Number	1
e-ISSN	1438390X
Language	English
Publisher	Springer Japan
Publisher Date	2009-05-02
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acetylcholinesterase Allele-specific PCR Cytochrome P450 Density independence Drosophila melanogaster Insecticide resistance Forestry Behavioural Sciences Evolutionary Biology Plant Sciences Zoology Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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Population model of fluctuations in organophosphate resistance of Drosophila melanogaster: Roles of a mutated acetylcholinesterase and a cytochrome P450

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Contributions of three-site mutations in acetylcholinesterase and cytochrome P450 to genetic variation in susceptibility to organophosphate insecticides within a natural population of Drosophila melanogaster

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Contributions of three-site mutations in acetylcholinesterase and cytochrome P450 to genetic variation in susceptibility to organophosphate insecticides within a natural population of Drosophila melanogaster