Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Phylogenetic study of the Genus Suaeda(Chenopodiaceae) based on chloroplast and nuclear DNA sequences from Korea

엽록체 DNA 및 핵 DNA 염기서열에 근거한 한국산 나문재속(명아주과)의 분류학적 연구

  • Kim, Suk-Kyu (Tidal Flat Research Center-National Institute of Fisheries Science) ;
  • Chung, Sang Ok (Tidal Flat Research Center-National Institute of Fisheries Science)
  • 김석규 (국립수산과학원 서해수산연구소 갯벌연구센터) ;
  • 정상옥 (국립수산과학원 서해수산연구소 갯벌연구센터)
  • Received : 2018.10.01
  • Accepted : 2018.11.05
  • Published : 2018.12.31
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Abstract

The purpose of this study was to identify the phylogenetic relationships of the plants in the Korean genus Suaeda and to find out the molecular markers that could confirm the interspecies relationships in the family tree through molecular phylogenetic studies. We used the nuclear ribosomal DNA ITS and the chloroplast DNA matK, psbA-trnH, and trnL-trnF as the molecular markers. We could not distinguish between S. japonica and S. maritima and between S. maritima and S. australis in the ITS region and could not distinguish between S. japonica and S. australis with the base sequence in the psbA-trnH and trnL-trnF region. However, we analyzed the combinations of four molecular marker regions and confirmed that each of five plant species of the genus Suaeda formed the independent line. Therefore, it is considered that combinations of molecular markers would be useful for the analysis of phylogenetic relationships in the genus Suaeda. Further investigations of the ecological and morphological characteristics would be needed to understand the phylogenetic relationship and lineage diversification in the genus Suaeda.

한국산 나문재속 식물에 대한 계통학적 유연관계를 밝히고, 분자계통학적 연구를 통해 나문재속 종간 유연관계를 확인할 수 있는 분자마커를 찾아내기 위해 연구를 수행하였다. 핵 리보솜 DNA ITS와 엽록체 DNA matK, psbA-trnH 그리고 trnL-trnF를 분자마커로 사용하였다. ITS 영역은 칠면초와 해홍나물 그리고 해홍나물과 방석나물을 구분하지 못하였다. psbA-trnH와 trnL-trnF 영역의 염기서열은 칠면초와 방석나물을 구분하지 못하였다. 그러나 4종의 분자마커 영역을 조합하여 분석한 결과 나문재속 식물 5종이 각각 독립적인 계통을 형성하는 것을 확인하였다. 따라서 나문재속 계통관계 분석을 위해서 여러 개의 분자마커 조합이 유용할 것으로 판단된다. 나문재속 내 분류군 간의 계통관계를 명확히 밝히기 위해 차후에 좀 더 많은 생태학적, 형태학적 자료를 조사해야 할 것으로 보인다.

Keywords

References

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