Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Phylogenetic and Chemical Analyses of Cirsium pendulum and Cirsium setidens Inhabiting Korea

국내에 자생하는 큰엉겅퀴와 고려엉겅퀴의 분자유전학적 및 화학적 분석

  • Yoo, Sun-Kyun (Department of Food Science and Biotechnology, Joongbu University) ;
  • Bae, Young-Min (Department of Microbiology, Changwon National University)
  • 유선균 (중부대학교 식품생명과학과) ;
  • 배영민 (창원대학교 미생물학과)
  • Received : 2012.07.09
  • Accepted : 2012.08.16
  • Published : 2012.08.30
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Abstract

Cirsium pendulum plants were collected from Hongcheon, Pyeongchang, Wonju, Yangyang in Kangwondo, Gapyeong in Gyeongkido, and Choongju in Choongcheongbukdo. Cirsium setidens plants were collected from Taebaek in Kangwondo and Bonghwa in Kyeongsangbukdo. Genomic DNA was prepared from those plants and used for the amplification of 18S rDNA, ITS1, 5.8S rDNA, ITS2, and part of 28S rDNA. The PCR products were sequenced, and the sequence was deposited in the GenBank. The comparison of those sequences has revealed that the rDNA sequences are identical for all six C. pendulum plants, but that the ITS1 and ITS2 sequences contain variable nucleotides. The two C. setidens plants had different nucleotides in 18S rDNA, ITS1, and ITS2. The comparison of the DNA sequences of C. pendulum and C. setidens collected in this study with C. pendulum of Hokkaido in Japan and C. japonicum of Anhui in China indicated that the plants of those three species are clearly divided into three distinct groups. The silymarin content of the collected plants was analyzed and turned out to be quite high. Therefore, it has been found that both C. pendulum and C. setidens plants are producing large amounts of silymarin, which has been reported to have various medicinal effects.

국내에 자생 중인 큰엉겅퀴(Cirsium pendulum)를 강원도의 홍천, 원주, 평창, 양양 및 경기도 가평과 충청북도의 충주에서 채취하고, 고려엉겅퀴(Cirsium setidens)를 강원도의 태백 및 경상북도의 봉화에서 채취하였다. 채취된 식물들의 genomic DNA를 분리하여서 18S rDNA, ITS1, 5.8S rDNA, ITS2 및 28S rDNA의 일부를 증폭하고, 그 염기서열을 분석하였다. 이렇게 얻어진 염기서열을 GenBank에 등록하고, 서로 비교해 보았다. 그 결과 큰엉겅퀴는 6개체 모두에서 18S rDNA 및 5.8S rDNA의 염기서열은 서로 완전히 일치하고 있으나, ITS1과 ITS2의 염기서열에서는 약간의 차이를 보였다. 고려엉겅퀴의 경우에는 18S rDNA, ITS1 및 ITS2에서 2개체가 서로 비교적 큰 차이를 보였다. 일본의 홋카이도에서 채취된 큰엉겅퀴와 중국의 안휘성에서 채취된 엉겅퀴(Cirsium japonicum)를 포함하여서 ITS1과 ITS2 염기서열을 비교한 결과, 엉겅퀴, 큰엉겅퀴, 고려엉겅퀴는 확연하게 서로 다른 그룹을 형성하는 것으로 나타났다. 또한 채취된 큰엉겅퀴 및 고려엉겅퀴들의 silymarin 함량을 분석해 본 결과, 모두에서 그 함량이 2 mg/ml가 넘는 것으로 나타났다. 따라서 엉겅퀴뿐만 아니라 큰엉겅퀴나 고려엉겅퀴도 여러 가지 약리작용을 가진 것으로 보고된 silymarin을 상당히 높은 농도로 함유하고 있는 것으로 나타났다.

Keywords

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  1. Genetic Relationship of Some Cirsium Plants of Korea vol.25, pp.2, 2015, https://doi.org/10.5352/JLS.2015.25.2.243
  2. Nutritional Components and Physiological Activities of Cirsium setidens Nakai vol.43, pp.6, 2014, https://doi.org/10.3746/jkfn.2014.43.6.791
  3. Determination of flavonoids from Cirsium japonicum var. maackii and their inhibitory activities against aldose reductase 2017, https://doi.org/10.1007/s13765-017-0302-z