RAPD-PCR 분석에 의해 결정된 갈치 (Trichiurus lepturus) 2 집단의 유전적 차이와 변이

Genetic Differences and Variation in Two Largehead Hairtail (Trichiurus lepturus) Populations Determined by RAPD-PCR Analysis

  • 박창이 (군산대학교 해양과학대학 수산생명의학과) ;
  • 윤종만 (군산대학교 해양과학대학 수산생명의학과)
  • Park, Chang-Yi (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University) ;
  • Yoon, Jong-Man (Department of Aquatic Life Medicine, College of Ocean Science and Technology, Kunsan National University)
  • 투고 : 2005.07.18
  • 심사 : 2005.09.02
  • 발행 : 2005.09.30

초록

한국과 대서양산 갈치 (Trichiurus lepturus) 2지리적 집단으로부터 genomic DNA를 분리 추출하였다. 선택된 8개의 RAPD primer를 이용하여 common, polymorphic 그리고 specific fragment를 얻어냈다. 2지역으로부터 primer간 banding patterns 의 복잡성이 두드러지게 나타났다. DNA fragment 의 분자적 크기는 150 bp에서부터 3,000 bp까지 커다란 차이를 나타내었다. 본 연구에서 한국산 갈치 집단에서는 947개의 fragment가 나타났고, 대서양산 갈치 집단에서는 642개의 fragment 가 확인되었다. 또한 한국산 집단에서는 148개의 specific fragment (15.6%) 가 확인되었으며, 대서양산 갈치집단에서는 61개의 specific fragment (9.5%)가 발생되었다. 한국산 갈치집단에서는 638개의 common fragment가 나타났으며, 이는 primer 당 평균적으로 79.8개의 fragment 로 확인되었다. 또한 대서양산 갈치집단에서는 429개의 common fragment 가 확인되었고, 평균해서 primer 당 53.6개의 common fragment 가 나타났다. 한국산 갈치집단과 대서양산 갈치집단의 polymorphic fragment는 각각 76개와 27개로 확인되었다. 모든 갈치시료의 평균적인 bandsharing value를 기초로 해서 한국산 갈치집단의 similarity matrix를 조사해 본 결과 0.784 로부터 0.922까지 나타났고, 대서양산 갈치집단의 값은 0.833로부터 0.990까지 확인되었다. 결과적으로 대서양산 갈치집단내 개체의 bandsharing value 평균값은 한국산 갈치집단의 평균값보다 높게 나타났다. 8개의 primer를 사용하여 얻어진 dendrogram은 cluster 1 (KOREAN 01~KOREAN 11) 및cluster 2 (ATLANTIC 12~ATLANTIC 22)와 같이 2개의 유전적 클러스터로 나뉘어졌다. 한국산 갈치집단내의 10번째 개체(KOREAN no. 10)와 11번째 개체(KOREAN no. 11) 사이가 가장 가까운 유전적 관계(genetic distance = 0.038)를 나타내었다. 궁극적으로 볼 때 한국산 갈치집단의 1번째(KOREAN no. 01)와 대서양산 갈치집단의 16번째(ATLANTIC no. 16) 개체 사이가 가장 먼 유전적 거리(genetic distance = 0.708)를 나타내었다.

Genomic DNA was isolated from two geographic populations of largehead hairtail (Trichiurus lepturus) in Korea and the Atlantic Ocean. The eight arbitrarily selected primers were found to generate common, polymorphic, and specific fragments. The complexity of the banding patterns varied dramatically between primers from the two locations. The size of the DNA fragments also varied widely, from 150 bp (base pairs) to 3,000 bp. Here, 947 fragments were identified in the largehead hairtail population from Korea, and 642 in the largehead hairtail population from the Atlantic Ocean: 148 specific fragments (15.6%) in the Korean population, and 61 (9.5%) in the Atlantic population. In the Korean population, 638 common fragments with an average of 79.8 per primer were observed.; 429 common fragments, with an average of 53.6 per primer, were identified in the Atlantic population. The number of polymorphic fragments in the largehead hairtail population from Korea and the Atlantic Ocean was 76 and 27, respectively. Based on the average bandsharing values of all samples, the similarity matrix ranged from 0.784 to 0.922 in the Korean population, and from 0.833 to 0.990 in the Atlantic population. The bandsharing value of individuals within the Atlantic population was much higher than in the Korean population. The dendrogram obtained by the eight primers indicated two genetic clusters: cluster 1 (KOREAN 01~KOREAN 11), and cluster 2 (ATLANTIC 12~ATLANTIC 22). Individual KOREAN no. 10 from Korea was genetically most closely related to KOREAN no. 11 in the Korean population (genetic distance = 0.038). Ultimately, individual KOREAN no. 01 of the Korean population was most distantly related to ATLANTIC no. 16 of the Atlantic population (genetic distance = 0.708).

키워드

참고문헌

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