›› 2000, Vol. 43 ›› Issue (2): 134-137.

• RESEARCH PAPERS • Previous Articles     Next Articles

Phosphorylation of synaptosomal protein from adult brains of resistant and susceptible strains of diamond back moth

HAN Zhao-jiu1, TIAN Yu2,LI Feng-liang1,LI Zhong-ying1,CHEN Zhi-hao1   

  • Online:2000-05-20 Published:2000-05-20

Abstract: The phosphorylation of synaptosomal protein from adult brains of three resistant strains and a susceptible strain of diamond back moth,Plutella xylostella had been studied. The result showed that the level of protein phosphorylation differed between resistant and susceptible strains. Calmodulin could promoted the protein phosphorylation differently in strains studied, so was cAMP. But the susceptible strain expressed higher sensitivity. Both dimehypo and cartap inhibited the protein phosphorylation more in the susceptible strain than in dimehypo resistant and cartap resistant strains. Deltamethrin, however, activated the protein phosphorylation stronger in the susceptible strain than in deltamethrin resistant strain. The study reveals that insecticide resistance of diamond back moth might result in changes of protein phosphorylation in nervous system, leading modification of nervous regulation.

Key words: diamond back moth, resistance, protein phosphorylation