Acetylcholinesterase point mutations in European strains of <i>Tetranychus urticae</i> (Acari: Tetranychidae) resistant to organophosphates

Abstract

Four AChE1 mutations were found in resistant strains of T. urticae, and three of them, F331W, G328A and A201S, are possibly involved in resistance to OP and CARB insecticides. Among them, F331W is probably the most important and the most common in T. urticae. It can be easily detected by the diagnostic PCR-RLFP assay developed in this study.