The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Molecular Phylogenetic Analysis of Botrytis cinerea Occurring in Korea

우리나라에 발생하는 잿빛곰팡이병균 Botrytis cinerea의 분자계통학적 유연관계

  • Back, Chang-Gi (School of Applied Biosciences, Kyungpook National University) ;
  • Lee, Seung-Yeol (School of Applied Biosciences, Kyungpook National University) ;
  • Jung, Hee-Young (School of Applied Biosciences, Kyungpook National University)
  • 백창기 (경북대학교 응용생명과학부) ;
  • 이승열 (경북대학교 응용생명과학부) ;
  • 정희영 (경북대학교 응용생명과학부)
  • Received : 2014.06.22
  • Accepted : 2014.06.30
  • Published : 2014.06.30
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Abstract

Several isolates were collected from apple, pepper, strawberry, cucumber and tomato having typical gray mold symptoms. All the isolates were identified as Botrytis cinerea by using morphological characteristics and PCR-RFLP method. It was difficult to analyze the phylogenetic relationship of these isolates by using ITS region, HSP60 and G3PDH because these genes were highly homologous in their nucleotide in inter-species of B. cinerea and intra-species of genus Botrytis. However, phylogenetic analysis using combined sequences (RPB2, HSP60 and G3PDH genes) clearly showed that all isolate of B. cinerea were different from Botrytis spp. Furthermore, it was also confirmed that strawberry isolate was distantly related to apple, pepper, cucumber and tomato isolates that were closely related to each other in nucleotide level.

잿빛곰팡이병의 전형적인 병징을 나타내는 병든 사과, 고추, 딸기, 오이, 토마토에서 곰팡이를 분리하고, 그들의 배양학적 특성과, 형태적 특성 및 PCR-RFLP을 통해 이 병원성 곰팡이를 모두 Botrytis cinerea로 동정하였다. 또한, 배양학적 특징에 따라 사과, 고추, 오이에서 분리한 잿빛곰팡이병균의 표현형은 균핵형이며, 딸기와 토마토에서 분리한 잿빛곰팡이병균은 균사형이었다. 각각의 잿빛곰팡이병균의 ITS 영역 염기서열을 포함한 4종의 유전자(RPB2, HSP60, G3PDH)의 염기서열을 결정하고 분자계통학적 유연관계를 분석하였다. RPB2 유전자 염기서열을 제외한 ITS 영역, HSP60유전자 및 G3PDH 유전자의 염기서열은 Botrytis cinerea 종 내 뿐만 아니라 Botrytis 속 종간에도 매우 높은 상동성을 나타내어 계통학적 유연관계 분석이 어려웠다. 하지만, 3종의 유전자(RPB2, HSP60, G3PDH)를 결합한 유전자 염기서열을 이용한 분자계통수 작성 결과, 본 연구에서 분리한 잿빛곰팡이병균은 Botrytis 속의 다른 종들과 구별되며, 사과, 고추, 오이, 토마토의 분리주는 아주 높은 근연관계에 있고, 딸기잿빛곰팡이병균은 다른 분리주와 달리 종내 다른 lineage를 형성하였다.

Keywords

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