Biological properties of $\beta$-ketoacetoanilide chlorides against late blight of tomato

베타-케토아세트아닐라이드 염화물 유도체의 토마토 역병에 대한 작용 특성

  • Choi, Gyung-Ja (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Jang, Kyoung-Soo (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Kim, Jin-Cheol (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Lee, Seon-Woo (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Cho, Kwang-Yun (Biological Function Research Team, Korea Research Institute of Chemical Technology) ;
  • Nam, Kee-Dal (Organic Chemistry Lab, Korea Institute of Science and Technology) ;
  • Hahn, Hoh-Gyu (Organic Chemistry Lab, Korea Institute of Science and Technology)
  • 최경자 (한국화학연구원 생물기능연구팀) ;
  • 장경수 (한국화학연구원 생물기능연구팀) ;
  • 김진철 (한국화학연구원 생물기능연구팀) ;
  • 이선우 (한국화학연구원 생물기능연구팀) ;
  • 조광연 (한국화학연구원 생물기능연구팀) ;
  • 남기달 (한국과학기술연구원 생체과학연구부) ;
  • 한호규 (한국과학기술연구원 생체과학연구부)
  • Published : 2004.06.30

Abstract

[ $\beta$ ]-Ketoacetoanilide chloride derivatives containing a substituent at 4 in phenyl group (para) reduced specifically the development of tomato late blight caused by Phytophthora infestans. Among $\beta$ketoacetoanilide chloride derivatives, five (KIST163, KIST170, KIST260, KIST263, and KIST267) were selected and tested for their protective, curative, systemic, persistent activities, and disease control efficacy against tomato late blight on adult plants. They exhibited a strong l-day protective activity and $EC_{50}$ of KIST163 and KIST170 were 21.9 and $14.5{\mu}g/mL$, respectively. However, they had little curative and systemic activities. Good persistence of KIST163 and KIST170 on tomato plants were observed against P. infestans; both KIST163 and KIST170 at $100{\mu}g/mL$ showed control values more than 75% in a 7-day protective applications. In addition, the two chemicals effectively controlled the occurrence of P. infestans on adult tomato plants. These results indicate that five $\beta$-ketoacetoanilide chloride derivatives are foliar fungicides with a preventive action and KIST163 and KIST170 have a potential for the control of tomato late blight in the fields.

페닐기의 4 위치(para)에 치환체가 존재하는 베타-케토아세트아닐라이드 염화물은 선택적으로 토마토 역병에 대하여 살균 활성을 보였다. 베타-케토아세트아닐라이드 염화물 5종(KIST163, KIST170, KIST260, KIST263, KIST267)을 선발하여 이들의 토마토 역병에 대한 예방효과, 치료효과, 침투이행성, 약효 지속성 및 성체실험과 같은 약제의 작용특성을 조사하였다. 그들 모두는 예방효과를 보였으며, KIST163과 KIST170의 $EC_{50}$은 각각 21.9와 $14.5{\mu}g/mL$로 우수한 예방효과를 나타내었다. 하지만 이들 화합물의 토마토 역병에 대한 치료효과는 거의 없었으며, 토양관주처리 후의 침투이행성에 의한 방제효과는 미미하였다. 접종 7일전에 처리한 KIST163과 KIST170의 $100{\mu}g/mL$는 75% 이상의 방제효과를 보여 약효 지속성이 뛰어남을 알 수 있었다. 토마토 성체를 이용한 토마토 역병 방제실험에서 5종 화합물 중 특히 KIST163과 KIST170은 방제효과가 높아 $100{\mu}g/mL$에서 95% 이상의 방제효과를 보였다. 이상의 결과로부터 베타-케토아세트아닐라이드 염화물 유도체 5종은 주로 경엽처리 예방제이며, 이들 중 KIST163과 KIST170은 포장에서도 토마토 역병에 대하여 우수한 방제효과를 나타낼 것으로 판단되었다.

Keywords

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