Mycobiology

The Korean Society of Mycology (한국균학회)
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Identification of DNA Markers Linked to Metalaxyl Insensitivity Loci in Phytophthora infestans

  • Eom, Seung-Hee (Plant Molecular Biology and Microbial Biotechnology Laboratory, Division of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Kim, Kwon-Jong (Plant Molecular Biology and Microbial Biotechnology Laboratory, Division of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Jung, Hee-Sun (Plant Molecular Biology and Microbial Biotechnology Laboratory, Division of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Lee, Sang-Pyo (Plant Molecular Biology and Microbial Biotechnology Laboratory, Division of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University) ;
  • Lee, Youn-Su (Plant Molecular Biology and Microbial Biotechnology Laboratory, Division of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University)
  • Published : 2003.12.31
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Abstract

A total of 24 isolates of Phytophthora infestans were tested and analyzed for their resistance to metalaxyl fungicides. Sensitivity to metalaxyl was determined by growing isolates on 20% V8 medium amended with 0, 5, and 100 ${\mu}g/ml$ metalaxyl. Four isolates among the 24 tested were resistant to metalaxyl. Eleven isolates were intermediate and nine isolates were sensitive. Amplified fragment length polymorphism(AFLP) assay was used to identify the amplification products of resistant isolates. As a result, selected fragments were cloned, sequences and primer pairs were developed which linked to metalaxyl insensitivity in P. infestans using competitive PCR.

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References

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