미생물학회지 (Korean Journal of Microbiology)

  • 제36권1호
  • /
  • Pages.40-45
  • /
  • 2000
  • /
  • 0440-2413(pISSN)
  • /
  • 2383-9902(eISSN)
한국미생물학회 (The Microbiological Society of Korea)
권호 표지

AFLP를 이용한 Rhizoctonia solani 균주들의 분자계통학적 특성규명

Molecular Systematics of Rhizoctonia solani Isolates from Various Crops with AFLP

  • 최혜선 (인천대학교 자연과학대학 생물학과) ;
  • 김경수 (강원대학교 농업생명과학대학 식물응용과학부) ;
  • 김희종 (강원대학교 농업생명과학대학 식물응용과학부) ;
  • 이윤수 (강원대학교 농업생명과학대학 식물응용과학부)
  • 발행 : 2000.03.01
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초록

Rhizoctonia solani 분류를 위해 균사의 anastomosis group과 phylogenetic group간의 유전적 차이의 분석을 위해 AFLP를 실시하였다. 그 결과, 각 집단의 유사도는 크게 5집단으로 나뉘어졌다. 균주 9와 균주 20은 0.777을 나타내며 AG-5 group에 속하였고 균주 6은 균주 24와 0.670으로 AG-3 group에 속하였다. 균주 3은 균주 13과 0.844, 균주 10과 0.833의 높은 상동성을 보이며 AG-2-2 group에 속하였다. 균주 2는 균주 11과 0.744, 균주 3은 균주 13과 0.844, 균주 4는 균주 5와 0.870, 균주 5는 균주 16과 0.833을 나타내며 AG-1 group에 속하였다. 균주 7은 균주 8과 0.837의 높은 상동성을 나타내고, 균주 8은 AG-1( I B)와 0.751를 나타냈고, 균주 1과 균주 7,8은 AG-1( I B)에 속하였다.

Rhizoctonia solani Kuhn[Thanatephorus cucumeris (Frank) Donk]is a destrutive soil-borne plant pathogen affecting many agricultural crops worldwide. R. solani is divided into anastomosis groups based on the ability of the hyphae to fuse, and into subgroups based on morphological, physiological characteristics. AG classifications are convenient and useful in identifying primary causal agents of Rhizoctonia diseases, although the mechanism of anastomosis is not fully understood. Beacause of the difficulties, we sought to develop a more direct method for genetic identification and charaterization of R. solani. Twenty nine isolates of R. solani were used for the analysis of genetic relationships among themselves and for rapid anastomosis grouping with AFLP method. All isolates studied were divided into five groups. Isolate 6 was included in AG-3 with 67% genetic similarity. When isolates 3 was compared with 13 and 10 each, they showed more than 84% and 83% similarity, respectively. Isolates 3, 4, 5, 13, and 16 were included in AG-1 with 83% genetic similarity. Isolates 1, 7, and 8 were included in AG-1(IB).

키워드

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