Insensitive Acetylcholine Receptor Conferring Resistance of Plutella xylostella to Nereistoxin Insecticides |
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| Authors: | Luo-gen CHENG Guang YU Zi-hao CHEN Zhong-yin LI |
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| Affiliation: | aJiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210097, P.R. China;bThe Pre-Clinical Medicine College, Nanjing University of Traditional Chinese Medicine, Nanjing 210029, P.R.China;cInstitute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550006, P.R.China |
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| Abstract: | The combinative rate measurement of (3-[I125] iodotyrosyl) α-bungarotoxin was applied in the analysis of the relation between nerve acetylcholine receptor and three types of insecticide resistance in diamondback moth, Plutella xylostella (L.). In the dimehypo-resistant strain and in the cartap-resistant strain, the nerve acetylcholine receptor showed the remarkable insensitivity to dimehypo and cartap, of which the binding rate to ligand was approximately 66 and 60%, respectively, of the susceptible strain. The sensitivity to deltamethrin in the deltamethrin-resistant strain did not show visible change. These results indicated that the decline in the sensitivity of nerve acetylcholine receptor to insecticide might be a potential mechanism to nereistoxin insecticides resistance in the diamondback moth. |
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| Keywords: | diamondback moth dimehypo cartap deltamethrin nerve acetylcholine receptor insecticide resistance |
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