Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Molecular Discrimination of Dinoflagellates Cochlodinium Polykrikoides Margalef, Gyrodinium Impudicum Fraga et Bravo and Gymnodinium Catenatum Graham using RAPD-PCR Method

RAPD-PCR 방법을 이용한 Cochlodinium polykrikoides Gyrodinium impudicum, Gymnodinium catenatum의 분자생물학적 진단

  • Published : 2003.10.01
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Abstract

Randomly amplified polymorphic DNA (RAPD) analysis was used to study genetic relationships among C. polykrikoides, G. impudicum and G. catenatum, which possess similar morphological features. Four of 12 primers were selected and 59 amplification products ranged from 0.2 kb to 3.0 kb. The number of polymorphic products in C. polykrikoides, G. impudicum and G. catenatum was 16 (27.1%), 8 (13.5%), and 16 (27.1%), respectively, while 17 were monomorphic. Number of species-specific bounds was 26 (44.0%), 34 (57.6%), 26 (44.0%) in C. polykrikoides, G. impudicum and G. catenatum, respectively. The genetic similarity between C. polykrikoides and G. impudicum/G. catenatum was 0.83, whereas G. impudicum and G. catenatum was 0.78. Our results suggest that C. polykrikoides, G. impudicum and G. catenatum are extremely different on the basis of RAPD analysis, despite similarity based on their morphology. The RAPD technique appears to be efficient in detecting genetic variation in these dinoflagellates.

형태적으로 매우 유사한 적조생물 C. polykrikoides, G. impudicum, G. catenatum을 RAPD 방법을 이용하여 유전적 유연관계를 조사했다. 12개의 primer 중 4종류만 선택되었고 증폭된 밴드수는 59개이며 그 크기는 0.2에서 3.0 kb까지였다. C. polykrikoides, G. impudicum, G. catenatum의 다형화된 밴드수는 16개, 8개, 16개로 각각 나타났다. 반면에, 17개의 밴드만 동일하였다. C. polykrikoides, G. impudicum, G. catenatum의 종 특이적인 밴드수는 26개, 34개, 26개로 각각 보였다. C. polykrikoides와 G. impudicum/G. catenatum의 유전적 유사성은 0.83이며, G. impudicum과 G. catenatum은 0.78로 나타났다. 이러한 결과로 볼 때 형태적으로는 유사하게 보이지만, RAPD 분석에 의하면 C. polykrikoides, G. impudicum, G. catenatum은 현저하게 상이한 적조생물이다. 앞으로 RAPD 기법을 이용하면 이러한 와편모조류의 유전적 변이를 탐색하는데 유용할 것으로 보인다.

Keywords

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