Determination of Malathion and Diazinon Resistance by Sequencing the MdαE7 Gene from Guatemala, Colombia, Manhattan, and Thailand Housefly (Musca domestica L.) Strains

Determination of Malathion and Diazinon Resistance by Sequencing the MdαE7 Gene from Guatemala,... Organophosphate (OP) insecticides (parathion/diazinon) resistance in housefly (Musca domestica L.) is associated with the change in carboxylesterase activity. The product of αE7 gene, which is a member of α-esterase gene cluster, is probably playing a role in detoxyfication of the xenobiotic esters. In parathion/diazinon resistant M. domestica species Gly137 to Asp substitution was found in the active center of the product of αE7 gene. In malathion (an OP) resistant M. domestica strains Trp251 to Ser substitution was identified in the active center of the MdαE7. In our research, to understand the allelic diversity of the MdαE7, the gene was partially sequenced from four different housefly strains from different localities (Guatemala, Manhattan (USA), Colombia (USA), and Thailand). It was found out that; in Thailand strain one allele has Cys residue at the position of 251, the other allele contains a Trp for the same site. In Colombia strain, one allele has Asp137, the other allele contains a Gly residue at this point. The Manhattan and Guatemala strains have Asp137 and Trp251 residues on their both alleles at these two different positions. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Determination of Malathion and Diazinon Resistance by Sequencing the MdαE7 Gene from Guatemala, Colombia, Manhattan, and Thailand Housefly (Musca domestica L.) Strains

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/B:RUGE.0000024974.58424.f9
Publisher site
See Article on Publisher Site

Abstract

Organophosphate (OP) insecticides (parathion/diazinon) resistance in housefly (Musca domestica L.) is associated with the change in carboxylesterase activity. The product of αE7 gene, which is a member of α-esterase gene cluster, is probably playing a role in detoxyfication of the xenobiotic esters. In parathion/diazinon resistant M. domestica species Gly137 to Asp substitution was found in the active center of the product of αE7 gene. In malathion (an OP) resistant M. domestica strains Trp251 to Ser substitution was identified in the active center of the MdαE7. In our research, to understand the allelic diversity of the MdαE7, the gene was partially sequenced from four different housefly strains from different localities (Guatemala, Manhattan (USA), Colombia (USA), and Thailand). It was found out that; in Thailand strain one allele has Cys residue at the position of 251, the other allele contains a Trp for the same site. In Colombia strain, one allele has Asp137, the other allele contains a Gly residue at this point. The Manhattan and Guatemala strains have Asp137 and Trp251 residues on their both alleles at these two different positions.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 18, 2004

References

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