Effect of Quizalofop-Ethyl on Glutathione-S-Transferases and Carboxylesterase Activity of Soybean and Corn Plants

Quizalofop-Ethyl이 콩과 옥수수의 Glutathione-S-Transferases와 Carboxylesterase의 활성에 미치는 영향

  • Kim, Hee-Kwon (Plant environment Department,Chonnam provincial Rural Development Administration) ;
  • Kim, Myoung-Seok (Plant environment Department,Chonnam provincial Rural Development Administration) ;
  • Park, In-Jin (Plant environment Department,Chonnam provincial Rural Development Administration) ;
  • Shu, Yong-Tack (Dept. of Agri.Chemistry.College of Agriculture Chonnam University)
  • 김희권 (전남농촌진흥원 식물환경과) ;
  • 김명석 (전남농촌진흥원 식물환경과) ;
  • 박인진 (전남농촌진흥원 식물환경과) ;
  • 서용택 (전남대학교 농화학과)
  • Published : 1997.12.30

Abstract

Biochemical characteristics and activities of glutathione-S-transferases(GSTs) and carboxylesterase extracted from soybean and corn plants treated with quizalofop-ethyl were investigated. Km value and Vmax of GSTs extracted from soybean and corn plants were $6.7{\times}10^{-3}M$ nmole/mg/min, 50, 20 nmole/mg/min, respectively. Optimum pH of carboxylesterase from soybean and corn was 7.0. Km value and Vmax of carboxylesterase extracted from soybean and corn plants were $4.2{\times}10^{-4}M$, $2.5{\times}10^{-4}M$ nmole/mg/min, 33, 10 nmole/mg/min, respectively. GSTs and carboxylesterase activity were reduced by quizalofop-ethyl. GSTs and carboxylesterse activity of corn was more reduced than that of soybean. When soybean and corn were treated by 80 ppm of quizalofopethyl. Soybean recovered after 10 days elapsing, but corn withered after 3days elapsing.

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