Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Variation of nuclear ribosomal ITS sequences of Polygonum section Persicaria (Polygonaceae) in Korea

한국산 여뀌속 Persicaria절(마디풀과)의 핵 리보오솜 ITS 염기서열 변이

  • Kwak, Myounghai (Department of Plant Science, University of Califonia) ;
  • Kim, Min-Ha (School of Biological Sciences, Collage of Natural Science, Seoul National University) ;
  • Won, Hyosig (School of Biological Sciences, Collage of Natural Science, Seoul National University) ;
  • Park, Chong-Wook (School of Biological Sciences, Collage of Natural Science, Seoul National University)
  • 곽명해 ;
  • 김민하 (서울대학교 자연과학대학 생명과학부) ;
  • 원효식 (서울대학교 자연과학대학 생명과학부) ;
  • 박종욱 (서울대학교 자연과학대학 생명과학부)
  • Published : 2006.03.31
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Abstract

We examined nrDNA ITS sequences from 16 taxa of Polygonum sect. Persicaria(Polygonaceae) in Korea to infer relationships among the taxa within the section. A neighbor-joining tree obtained from the analysis of the ITS sequences suggest that the ITS region was useful inferring the phylogenetic relationships among the taxa. The neighbor-joining tree indicates that P.amphibium is clearly separated from the other Korean taxa. The tree also reveals the presence of five major groups in the Korean taxa of the section; 1) P. lapathifolium var. lapathifolium, 2) P. persicaria and P. viscoferum, 3) P. orientale and P. viscosum, 4) P. japonicum and 5) a group including the remaining taxa. these relationships depicted on the ITS tree are largely congruent with those inferred from morphological and anatomical characters.

본 연구에서는 한국산 여뀌속 Persicaria절 분류군들에 대학 핵 리보오솜 (nrDNA)의 ITS 염기서열 분석을 수행하여 본 절 분류군들의 유연관계를 추정하고자 하였다, 본 연구결과 본 절 분류군의 nrDNA ITS 구간 염기서열은 본 절 분류군의 분류학적 타당성, 한계 및 계급설정 및 분류군 간의 계통적 유연관계를 추정하는 데 있어 유용한 것으로 나타났다. ITS 염기서열 분석결과 얻어진 neighbor-joining tree에서 본 절 한국산 분류군들은 크게 P.amphibium과 나머지 분류군들을 포함하는 ground의 2개의 계열로 구분되었다. 나머지 분류군들을 포함하는 두번째 계열은 다시 (1) P. lapathifolium, (2) P. persicaria와 P. viscoferum, (3) P. orientale 및 P. viscosum, (4) P. japonicum 및 (5) P. longisetum, P. erecto-minus var. koreense, P. caespitosum var. laxiflorum, P. hydropiper, P. pubescence, P. tinctorium, P. foliosum, P. trigonocarpum을 포함하는 group으로 세분되었다. 이러한 결과는 과거 형태적 식별형질에 의해 제안되었던 본 절 분류군간의 유연관계와 근본적으로 일치하였다.

Keywords

Acknowledgement

Supported by : 환경부

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