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Identification and characterization of ace1-type acetylcholinesterase likely associated with organophosphate resistance in Plutella xylostella
Abstract Insensitive acetylcholinesterase (AChE) was determined to be primarily involved in a prothiofos-resistant (PR) strain of diamondback moth (DBM, Plutella xylostella L.), as judged by the AChEExpand
RNA interference-mediated knockdown of a cytochrome P450, CYP6BG1, from the diamondback moth, Plutella xylostella, reduces larval resistance to permethrin.
TLDR
Results indicate that the overexpressed CYP6BG1 participate in enhanced metabolism of permethrin, thereby, resistance and RNA interference-mediated gene silencing by dsRNA droplet feeding is adopted. Expand
Variations in sperm number in relation to larval crowding and spermatophore size in the armyworm, Pseudaletia separata
TLDR
Number of sperm and its relationship with larval rearing density were investigated in the armyworm Pseudaletia separata, with no significant difference in number of eupyrene sperm between the two types being observed. Expand
Synergism of enzyme inhibitors and mechanisms of insecticide resistance in Bemisia tabaci (Gennadius) (Hom., Aleyrodidae)
TLDR
The results suggest that the resistance to organophosphates in B. tabaci was associated partly with AChE insensitivity, which might provide a plausible explanation for the improvement in insecticide toxicity by the three enzyme inhibitors. Expand
Identification of permethrin-inducible cytochrome P450s from the diamondback moth, Plutella xylostella (L.) and the possibility of involvement in permethrin resistance
TLDR
Insect cytochrome P450 monooxygenases (P450s) are important enzymes involved in catalysis of many reactions leading to insecticide resistance, and inducibility of the isolated P450s at the transcript level, specifically the overexpressed ones were analyzed and correlated with permethrin toxicity. Expand
Effects of temperature on fitness costs, insecticide susceptibility and heat shock protein in insecticide-resistant and -susceptible Plutella xylostella
TLDR
It was suggested that low fitness in R DBM caused by high temperature might be involved in the sharp decline of methamidophos resistance under high temperature conditions. Expand
Molecular phylogeny of the Eichhorni group of Delias Hübner, 1819 (Lepidoptera: Pieridae).
TLDR
The phylogenetic relationships among all species of the eichhorni group, representatives of each of the other 21 species groups of Delias butterflies, and some related genera were analyzed and the monophyly of the genus Delias is suggested, indicating phylogenetic intragroup relationships. Expand
Mechanisms of resistance to spinosad in the western flower thrip, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)
TLDR
The results of backcross showed that spinosad resistance did not fit a single‐gene hypothesis, suggesting that resistance was influenced by several genes. Expand
Selections for fenpyroximate resistance and susceptibility, and inheritance, cross-resistance and stability of fenpyroximate resistance in Tetranychus urticae Koch (Acari: Tetranychidae)
TLDR
F Frequencies of fenpyroximate resistance decline significantly in the absence of selection pressure, under laboratory conditions, however, the rate of decline is not high. Expand
Susceptibilities to methamidophos and enzymatic characteristics in 18 species of pest insects and their natural enemies in crucifer vegetable crops
TLDR
Different models of tolerance to methamidophos and enzymatic potential were existed in parasitoids, predators, and herbivores based on the different selection of insecticide pressure as well as different ecological and biological habitats. Expand
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