Title: Evidence that the elevated carboxylesterase (esterase 2) in organophosphorus-resistant Myzus persicae (Sulz.) is identical with the organophosphate-hydrolyzing enzyme
Abstract: An enzyme hydrolyzing methylparaoxon in vitro in an organophosphorus-resistant strain of the peach potato aphid (Myzus persicae Sulz.) is present in the same electrophoretic fraction as a carboxylesterase (esterase 2) which has previously been shown to have characteristically increased activity in organophosphorus resistant strains of this aphid. No in vitro organophosphate hydrolysis was found in a susceptible strain with low carboxyl-esterase-2 activity. Carboxylesterase-2 and the methylparaoxon-hydrolyzing enzyme are both inhibited by n-propylparaoxon but not by methyl- and ethylparaoxon. This indicates that the two enzymes are identical.
Publication Year: 1977
Publication Date: 1977-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 24
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