Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Phylogenetic Analysis of Native Vigna sinensis in Korea Using DNA Sequence of Internal Transcribed spacer (ITS) Region

토종 갓끈동부의 ITS1, 5.8S 및 ITS2의 염기서열을 이용한 계통 분석

  • Seo, Pil-Soo (Environment-Friendly Agriculture Division, Sunchang Agricultural Development & Technology Center) ;
  • Lee, Sook-Young (Innovation Center for Dental Science & Engineering, Chosun University) ;
  • Shin, Yong Kook (School of Integrated Oriental Medical Bioscience, Semyung University)
  • 서필수 (순창군농업기술센터 친환경농업과) ;
  • 이숙영 (조선대학교 치과용정밀장비 및 부품 지역혁신센터) ;
  • 신용국 (세명대학교 한방바이오 융합과학부)
  • Received : 2016.12.27
  • Accepted : 2017.01.20
  • Published : 2017.03.30
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Abstract

Cowpea (Vigna unguiculata (L.) Walp.) is recognized as a potential source of protein and other nutrients. The genus Vigna includes 100 wild species of plants. Especially, Vigna unguiculata includes annual cowpeas (ssp. unguiculata) and ten wild perennial subspecies. DNA sequence of internal transcribed spacer (ITS) region was determined for Vigna sinensis, one of native plant, which was found in recent but thought to have gone extinct in Korea. The seeds of Vigna sinensis used in this study were donated from Dong-Young Jo. The DNA sequence of ITS-5.8S-ITS2 for Vigna sinensis obtained from this study was deposited as Vigna sinensis AY195581 on GenBank of NCBI (National Center for Biotechnology Information). We investigated the sequence-based phylogenetic relationships of plants related and clarified its taxonomical position. DNA similarities among subspecies including Vigna unguiculata showed the range 98 to 100% in sequence-based phylogenetic analysis using total 507 base pairs of ITS1, 5.8S and ITS2. Vigna unguiculata and subspecies were grouped independently as one cluster from other Vigna species used in the phylogenetic analysis. In this study, based on the phylogenetic analysis using the ITS1-5.8S-ITS2 sequence of Vigna sinensis, it may be concluded to be classified to one of Vigna unguiculata substrains.

본 연구에서 밝혀진 갓끈동부의 ITS1, 5.8S 및 ITS2의 염기서열은 NCBI (National Center for Biotechnology Information)의 GenBank에 Vigna sinensis AY195581로 등록하였다. ITS1, 5.8S 및 ITS2의 총 염기서열 507 염기서열을 이용한 Vigna sinensis (AY195581)의 분자계통분석에서 Vigna unguiculata 및 그 아종들과 98~100% 범위의 염기서열 상동성을 보였다. Vigna unguiculata는 계통분석에 이용된 다른 종들로부터 독립된 하나의 cluster로 그룹핑(grouping)이 됨을 확인하였다. 본 계통분석은 Vigna unguiculata가 Vigna 속의 다른 종에 비해 비교적 최근에 분화되었으며, 현재 유전적인 변화가 많이 일어나고 있음 보이고 있다. 또한, Vigna 속, Vigna longifolia, Vigna vexillata, Vigna membranacea, Vigna friesiorum, Vigna monophylla, Vigna schimperi, Vigna nigritia, Vigna lasiocarpa, Vigna trichocarpa, Vigna diffusa의 다른 종들과 비교하여 유전적으로 독립적인 종임을 확인하였다. 본 연구의 Vigna sinensis의 ITS1, 5.8S 및 ITS2를 이용한 계통분석은 Vigna sinensis를 Vigna unguiculata로 분류하는 것이 타당한 것으로 보여진다. 본 종은 국내에서 멸종된 것으로 알려져 있었으나 최근 토착 식물로써 발견되었고 이 갓끈동부의 관련 식물 종들과의 분자계통학적 위치를 명확히 밝힘에 의의가 있다고 하겠다.

Keywords

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