Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Genetic Variation in Flammulina velutipes

팽이버섯의 유전적 변이

  • Kim, Jong-Bong (Department of Medical Life Science, Catholic University of Daegu) ;
  • Jeong, Ja-In (Department of Medical Life Science, Catholic University of Daegu)
  • 김종봉 (대구가톨릭대학교 의생명과학과) ;
  • 정자인 (대구가톨릭대학교 의생명과학과)
  • Received : 2011.07.27
  • Accepted : 2011.09.16
  • Published : 2011.10.31
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Abstract

A genetic variation within 29 strains of F. velutipes was analyzed by internal transcribed spacer (ITS) sequence analysis and random amplified polymorphic DNA (RAPD). Seven hundred and twenty base pairs were sequenced during the analysis of the ITS region, but no significant variation was observed among the 29 strains of F. velutipes. Sixteen out of 40 random primers amplified polymorphic RAPD fragment patterns. The polymorphic levels of RAPD bands by some primers (OPA-2,4,3,9,10,20) were very high in all 29 strains, with 3,030 fragments ranging between 200 and 2,000 bp. Intraspecific genetic dissimilarity of the 29 strains was calculated to range from 3.3% to 45% by Nei-Li's method using these 3,030 RAPD bands. The genetic variation among Korean strains was relatively high, with dissimilarities ranging between 17% and 38.6%. In the Neighbor-Joining analysis using the genetic dissimilarities based on RAPD, all 29 strains were classified into 5 clusters. Strains in each cluster showed specific characteristics according to their origin and strains. These results suggested that OPA and OPB primers could be used for developing molecular genetic markers and screening of unidentified (F. velutipes) strains.

ITS 염기서열과 RAPD를 이용하여 F. velutipes 29개의 팽이버섯 품종 간의 유전적 변이를 분석하였다. ITS 부위에서 720 bp의 염기서열을 확인 하였으나 29개의 팽이품종간에 유의적인 차이가 없었다. RAPD 분석 결과 40개의 random primer 중 다형성을 나타내는 primer는 16개였으며, 그 중 뚜렸한 다형성을 띄는 primer는 OPA-2,4,3,9,10,20 이었다. 이들 29개 품종에서 primer에 의해 증폭된 밴드는 모두 3,030개 였으며, DNA 단편의 크기는 200~2,000 bp 사이에 위치하였다. 또한 3,030개의 scrabble RAPD band들을 marker로 하여 Nei-Li's의 방법을 이용한 비유사도 지수행렬을 조사한 결과 전체 29개 품종의 종내 유전적 변이는 3.3~45%였고, 특히 한국 야생팽이의 종내 유전적 변이도는 17~38.6%로 품종 간 다형성을 확인하였다. RAPD 변이에 기초하여 neighbor-joining tree (NJ) 분석에서는 5개의 cluster로 구분되었으며, 각각의 cluster는 품종, 지역 적 특성을 나타내었다. 본 연구 결과 RAPD와 실험을 통해 확인된 OPA, OPB primer의 경우 미확인 팽이품종들을 검색 하는데 분자 유전적 표지 maker로써 이용 할 수 있는 것으로 생각된다.

Keywords

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