Herbicidal action mechanism of chlorsulfuron

Acetolactate synthase 저해 제초제인 chlorsulfuron의 작용기작

  • Kim, Song-Mun (Institute for Agricultural Science Research, College of Agriculture and Life Science, Kangwon National University) ;
  • Kim, Yong-Ho (Division of Biological Environment, College of Agriculture and Life Science, Kangwon National University) ;
  • Hur, Jang-Hyun (Division of Biological Environment, College of Agriculture and Life Science, Kangwon National University) ;
  • Han, Dae-Sung (Division of Biological Environment, College of Agriculture and Life Science, Kangwon National University)
  • 김성문 (강원대학교 농업생명과학대학 농업과학연구소) ;
  • 김용호 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 허장현 (강원대학교 농업생명과학대학 자원생물환경학부) ;
  • 한대성 (강원대학교 농업생명과학대학 자원생물환경학부)
  • Published : 1998.12.30

Abstract

Chlorsulfuron, one of sulfonylurea herbicides acts through inhibition of acetolactate syuthase (EC 4.1.3.18; ALS, also known as acetohydroxyacid synthase) in the branched-chain amino acid biosynthesis process. After chlorsulfuron-ALS interaction, many physiological and metabolic disruptions occur in plants. However, it is not clear how this chlorsulfuron-ALS interaction affects those physiological and metabolic processes and how this interaction leads subsequently to plant death. Several researchers suggested that the death of chlorsulfuron-treated plants might be due to a shortage of the branched-chain amino acids, an accumulation of toxic metabolites, and/or a depletion of photoassimilates. It remains as a mystery presently, however, if such changes result in the plant death. In this review, we discussed how the chlorsulfuran-ALS interaction leads to physiological and metabolic disruptions in plants.