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CYTOCHROME P450 MONOOXYGENASES ASSOCIATED WITH PYRETHROID RESISTANCE IN HELICOVERPA ARMIGERA (HÜBNER)
Author(s) -
Dong Yuxin,
Zhuang Peijun,
Tang Zhenhua
Publication year - 1999
Publication title -
insect science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 45
eISSN - 1744-7917
pISSN - 1672-9609
DOI - 10.1111/j.1744-7917.1999.tb00015.x
Subject(s) - helicoverpa armigera , monooxygenase , biology , demethylase , strain (injury) , insecticide resistance , cytochrome , cytochrome p450 , pesticide resistance , toxicology , enzyme , pesticide , biochemistry , botany , lepidoptera genitalia , agronomy , gene , epigenetics , anatomy
The relationship between the cytochrome P‐450 (cytP 450 monooxygenase and insecticide resistance mechanisms in Helicoverpa armigera was studied. The level of cytP450 and activity of p ‐ni‐troanisole ( p ‐NA) O‐demethylase in resistant strain were 1. 71 times and 2. 21 times respectively higher as compared with those of the susceptible strain. Aldrin epoxidase activity showed 1. 35 fold strain difference. Therefore aldrin epoxidase might not be important for H. armigera resistance mechanism, the level of cytP450 and activity of p ‐NA O‐demethylase might play a vital role in H. armigera resistance mechanisms. The reason of different resistance mechanisms among different H. armigera resistant strains is discussed.