Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Molecular phylogenetic study of section Sabina (Genus Juniperus) in Korea based on chloroplast DNA matK and psbA-trnH sequences data

엽록체 DNA matK와 psbA-trnH 염기서열에 기초한 한국산 향나무절(향나무속) 식물의 분자계통학적 연구

  • 홍정기 (국립수목원 산림생물조사과) ;
  • 양종철 (국립수목원 산림생물조사과) ;
  • 오승환 (국립수목원 산림생물조사과) ;
  • 이유미 (국립수목원 산림생물조사과)
  • Received : 2013.12.31
  • Accepted : 2014.03.11
  • Published : 2014.03.31
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Abstract

This study aims to define the phylogenetic relationship within Korean section sabina and find molecular markers which resolve the phylogenetic relationship in genus Juniperus and section sabina. cpDNA matK and psbA-trnH were used as molecular markers. The combined analyses of two genes suggested that section sabina was a clade supported by 100% BP. The relationships of [J. chinensis var. sargentii+J. davurica] clade and [J. chinensis var. chinensis+J. chinensis var. procumbens+J. chinensis var. horizontalis] clade were supported by 91% BP and 100% BP, respectively. Thus, the classification of Korean section sabina would be appropriate at follows, (1) J. chinensis var. sargentii+J. davurica, and (2) J. chinensis var. chinensis+J. chinensis var. procumbens According to the results of separate analyses, matK seems to work better resolving power to clarify the phylogenetic ambiguity in Juniperus and section sabina than psbA-trnH.

한국산 향나무절 식물에 대한 계통학적 유연관계를 규명하고, 더불어 향나무속 및 향나무절의 계통 및 유연관계를 잘 나타낼 수 있는 분자마커를 찾아내고자 분자계통학적 연구를 수행하였다. 엽록체 DNA matK와 psbA-trnH를 분자마커로 활용하였으며, 두 유전자의 조합분석결과 향나무절이 100%의 BP로 지지되는 분계조를 이루었다. 눈향나무+단천향나무 분계조와 향나무+섬향나무+뚝향나무 분계조는 각각 91%, 100%의 BP로 지지되었다. 따라서 한국산 향나무절은 (1) 눈향나무+단천향나무, (2) 향나무+섬향나무+뚝향나무 두 개의 분계조로 구분하는 것이 가장 적합할 것으로 생각되고, 본 연구에서 이용된 두 개의 분자마커 중 matK가 psbA-trnH 보다 향나무속 및 향나무절의 계통 및 유연관계를 규명하는데 다소 높은 해상력을 나타내었다.

Keywords

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