Comparative effects of nicotine and diazinon on larval mortality and activity of cytochrome P-450 monooxygenases in Helicoverpa assulta and Spodoptera exigua

담배나방과 파밤나방의 유충사망률과 cytochrome P-450 monooxygenases의 활성에 미치는 니코틴과 다이아지논의 영향

  • 이정호 (서울대학교 농생대 농생물학과 및 농업생물신소재연구센터) ;
  • 부경생 (서울대학교 농생대 농생물학과 및 농업생물신소재연구센터)
  • Published : 1993.06.01

Abstract

This study was carried out to investigate effects of diazinon, an organophosphate, and nicotine, a plant~originated toxic chemical, on larval mortality and activity of cytochrome P-45D monooxygenases, a major detoxifwation enzyme system, in Helicoverpa assulta and Spodoptera exigua. Diazinon treatment gave a higher mortaliLy to H. assulta larvae than S. exigua larvae. In contrast to the case of diazinon, nicotine caused a higher mortahty to S. exigua than to H. assulla larvae. It was partly due to the fact that nicotine induced the actiVIty of midgut cytochrome P-450 monooxygenases (MFO) more than diazinon did in If assulta larvae. When If. aSSlllta larvae were reared on their host p\am. NicotwlIa tuoocum leaves, other componentS were mostly metabolized with the exception of dietary nicotine.