The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Analysis of genetic relationships of Colletotrichum spp. isolated from sweet persimon with AFLP

AFLP를 이용한 단감나무 탄저병 병원균 Colletotrichum spp.의 유연관계 분석

  • Kim, Hee-Jong (Kangwon National University, College of Agriculture and Life Sciences, Division of Applied Plant Sciences) ;
  • Jeong, Bong-Gu (Chungbook National University, College of Agriculture, Department of Agricultural Biology) ;
  • Lee, Youn-Su (Kangwon National University, College of Agriculture and Life Sciences, Division of Applied Plant Sciences)
  • 김희종 (강원대학교 농업생명과학대학 식물응용과학부) ;
  • 정봉구 (충북대학교 농과대학 농생물학과) ;
  • 이윤수 (강원대학교 농업생명과학대학 식물응용과학부)
  • Published : 2001.04.30
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Abstract

Colletotrichum species are important fungal pathogens that cause great damages on various host plant species worldwide. In Korea, Colletotrichum species cause massive economic losses on apple, peach, grape, and especially, sweet persimon productions. In the past, identification of the pathogen and the studies on the genetic relationships among the pathogenic isolates were mainly based on morphology, cultural characteristics, and the difference in pathogenicity. However, in recent years, these traditional methods have been replaced with molecular methods including AFLP. AFLP method with the merits of both RAPD and RFLP has been widely used for the genetic relationship studies of various organisms. Therefore, in this study, AFLP method was employed for the studies of genetic relationships among the different isolates of Colletotrichum species collected from various parts of sothern Korea. As a result, two specific band pattern groups were observed among different isolates of Colletotrichum species.

Colletotrichum spp.는 광범위한 기주 범위를 갖는 다범성 균으로 각종 작물에 피해를 야기시키는 중요한 식물병원 진균이다. 최근 국내에서 널리 재배되고 있는 단감, 사과, 복숭아, 포도 등에 탄저병이 발생하여 많은 경제적 손실을 초래하고 있다. 탄저병 병원균의 경우 기존에는 주로 형태적 특성이나 배지상에서의 특성, 기주에 대한 병원성의 차이에 의존하여 분류를 해 왔다. 그러나 최근에는 병원균의 분류에 있어 문제점을 해결하기 위하여 분자생물학적 방법을 이용하고 있다. 최근에는 RAPD(ramdomly amplified polymorphic DNAs)와 RFLP(restriction fragment length polymorphism)의 장점만을 살린 AFLP(amplified fragment length polymorphism)기법이 유연관계 분석에 있어서 각광을 받고 있고 rDNA부위를 증폭하여 제한효소를 이용하여 다양성을 보는 방법이 많이 이용되고 있다. 이에 본 실험에서는 AFLP 기법 이용하여 단감나무에 탄저병을 일으키는 균들간에 유연관계를 밝혔다. AFLP결과에서 variation이 심하여 각각의 특징적인 band를 검출할 수 있었다. 특히 단감나무에 병해를 일으키는 탄저병 병원균 2개의 종이 복합적으로 관여하는 사실을 알 수 있었다.

Keywords

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