The primary structure of the second transmembrane (M2) segment of resistant to dieldrin (RDL), an ionotropic γ-aminobutyric acid receptor (GABAR) subunit, and the structure-function relationships in RDL are well conserved among insect species. An amino acid substitution at the 2' position in the M2 segment (Ala to Ser or Gly) confers resistance to non-competitive antagonists (NCAs) of GABARs. Here, a cDNA encoding RDL was cloned from the two-spotted spider mite Tetranychus urticae Koch.
View Article and Find Full Text PDFBackground: Cyflumetofen is a novel acaricide developed by Otsuka AgriTechno Co., Ltd. It affects only spider mites and has no effect on insects, crustaceans or vertebrates under conditions of practical use.
View Article and Find Full Text PDFOctopamine receptors are attractive insecticide targets. To screen compounds acting at octopamine receptors simply and rapidly, we constructed a chemiluminescent reporter gene assay system that detects secreted placental alkaline phosphatase transcriptionally regulated by the cAMP response element for a silkworm octopamine receptor. This system proved useful in high-throughput screening to develop octopamine receptor-specific insecticides.
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