Changes of metalaxyl sensitivity of Phytophthora infestans isolated from potato fields of Gangwon area

강원지역 포장에서 분리한 감자 역병균 (Phytophthora infestans) 의 metalaxyl에 대한 감수성 변화

  • Zhang, Xuan-Zhe (Department of Applied Plant Science, Kangnung National University) ;
  • Chung, Eun-Kyung (Department of Applied Plant Science, Kangnung National University) ;
  • Lee, Youn-Su (Department of Applied Plant Science, Kangwon National University) ;
  • Kim, Byung-Sup (Department of Applied Plant Science, Kangnung National University)
  • 장현철 (강릉대학교 식물응용과학과) ;
  • 정은경 (강릉대학교 식물응용과학과) ;
  • 이윤수 (강원대학교 식물응용과학부) ;
  • 김병섭 (강릉대학교 식물응용과학과)
  • Published : 2003.03.27


Changes of control effect of metalaxyl to potato late blight caused by Phytophthora infestans were examined in potato fields in 2001 and 2002. Control efficacy of metalaxyl was similar to those of dimethomorph and ethaboxam. About 4.9% of the fungal isolates exanlined in 2001 were resistant, 87.8% were intermediate, and 7.3% were sensitive to metalaxyl. Among the isolates collected in 2002, 20.1 % were resistant, 75.5% were intermediate, and 4.3% were sensitive to the chemical. However, most of resistant isolates were isolated from Pyongchanggun Hoenggae area. Eighty eight isolates collected in 2001 were all A1 mating type, while both A1 and A2 mating types were found in 2002. About 85.6% of the isolates collected in 2002 were A1 mating type, but all the rest (A2 mating type) was isolated from Hoenggae area. Increased control efficacy of metalaxyl to potato late blight might be caused by the increase of moderately resistant and sensitive isolates with decreasing the resistant isolate, and the decreased population of A2 mating type which is resistant to metalaxyl.


  1. Bruck, R. I., W. E. Fry and A. E. Apple (1980) Effect of metalaxyl, an acylalanine fungicide, on developmental stages of Phytophthora infestans. Phytopathology 70:597-601
  2. Chang, T. T., and Ko, W. H. (1990) Effect of metalaxyl on mating type of Phytophthora infestans and P. paracitica. Ann. Phytopath. Soc. Japan 56:194-198
  3. Daggett S. S., E. Gotz and C. D. Therrien (1993) Phenotypic changes in population of Phytophthora infestans in potato and tomato leaves. Phytopathology 83:319-323
  4. Davidse, L. C., D. Looijen, L. J. Turkensteen and D. Van Der Wal (1981) Occurrence of metalaxyl-resistant strains of Phytophthora infestans in Dutch potato fields. Neth. J. Plant Pathol. 87:65-68
  5. Delp, C. J. (1988) Fungicide resistnace in North America. APS Press
  6. Dowley, L. J and E. O'Sullivan (1981) Metalaxyl resistant strains of Phytophthora infestans(Mont.) de Bary in Ireland. Potato Research 24:417-421
  7. Fry, W. E., S. B. Goodwin, J. M. Matuszak, L. J. Spielman, M. G. Milgroom and A Drenth (1992) Population genetics and intercontinental migrations of Phytophthora infestans. Ann. Rev. Phytopathol. 30:107-129
  8. Kato, M., N. Sato, K. Takahashi and T. Shimanuki (1998) Yearly change of frequency and geographical distribution of A2 mating type isolates of Phytophthora infestans in Japan from 1987 to 1993. Ann. Phytopathol. Soc. Japan 64:168-174
  9. Kim, D. S., H. C. Park, S. J Chun, S. H. Yu, K. J. Choi, J. H. Oh, K. H. Shin, Y. J. Koh, B. S. Kim, Y. J. Hahm and B. K. Chung (1999) Field performance of a new fungicide ethaboxam against cucumber downy mildew, potato late blight and pepper Phytophthora blight in Korea. The Plant Pathology Journal 15:48-52
  10. Mosa, A. A., M. Kato, N. Sato, K. Kobayashi and A. Ogoshi (1989)Occurrence of the A2 mating type of Phytophthora infestans on potato in Japan. Ann. Phytopathol. Soc. Japan 55:615-620
  11. Ryu K. Y., W. F. Lou and Y. Wang (2001) Status of potato late blight(Phytophthora infestans) in Yunnan province of the Southwest China. Proceedings of the International Workshop on Potato Late Blight pp.11-139
  12. Spielman, L. J., A. Drenth, I. C. Davidse, L. J. Sujkowski, W. Gu, P. W. Tooley and W. E. Fry (1991) A Second world-wide migration and population displacement of Phytophthora infestans. Plant Pathology 40:422-430
  13. 고영진, 정희정, W. E. Fry (1994) 우리나라 감자 역병균 A2 교배형 및 Metalaxyl 저항성균의 빈도 및 분포의 변화. 한국식물병리학회지 10:92-98
  14. 김병섭, 최진희, 전환홍, 류경열, 함영일, 이윤수 (2000) 강원지역에서 분리한 감자 역병균(Phytophthora infestans)의 교배형 및 Metalaxyl 저항성. 한농약과학지 4:59-63
  15. 김병섭 (2001) 강원지역에서 감자 역병균의 교배형 변화와 metalaxyl에 대한 감수성 변화. Proceedings of the International Workshop on Potato Late Blight pp.11-139
  16. 이왕휴, 소만서, 최인영 (1994) 감자 역병균(Phytophthora infestans De Bary)의 약제저항성 및 교배형. 한식병지 10:192-196
  17. 張志銘, 中國馬鈴暑曉疫病的鼎究進展與綠合防治(2001) 馬給著雜志10:131-135
  18. 최경자, 김병섭, 정영륜, 조광연 (1992) 감자 재배포장에서 metalaxyl 저항성 인 감자 역 병균(Phytophthora infestans)의 발생. 한식병지 8:34-40
  19. 함영일, 한병희, J. D. Francowiak (1978) 한국의 고령지대에 있어서의 감자 역병 발생 예찰에 관하여. 한식보호지 17:81-88