Insensitive Acetylcholine Receptor Conferring Resistance of Plutella xylostella to Nereistoxin Insecticides  

作　　者：CHENG Luo-gen YU Guang CHEN Zi-hao LI Zhong-yin 

机构地区：[1]Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210097, P.R. China [2]The Pre-Clinical Medicine College, Nanjing University of Traditional Chinese Medicine, Nanjing 210029, P.R. China [3]Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang 550006, P.R.China

出　　处：《Agricultural Sciences in China》2008年第7期847-852,共6页中国农业科学（英文版）

基　　金：the National Natural Science Foundation of China （30160050）.

摘　　要：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.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.

关 键 词：diamondback moth dimehypo CARTAP DELTAMETHRIN nerve acetylcholine receptor insecticide resistance 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]