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Genetic diversity of Kalopanax pictus populations in Korea based on the nrDNA ITS sequence

  • Sun, Yan-Lin (School of Life Sciences, Ludong University) ;
  • Lee, Hak-Bong (Department of Forest Resources, Kangwon National University) ;
  • Kim, Nam-Young (Department of Forest Resources, Kangwon National University) ;
  • Park, Wan-Geun (Department of Forest Resources, Kangwon National University) ;
  • Hong, Soon-Kwan (Department of Bio-Health Technology, College of Biomedical Science, Kangwon National University)
  • 투고 : 2011.12.30
  • 심사 : 2012.01.15
  • 발행 : 2012.03.31

초록

$Kalopanax$ $pictus$ is a long-lived deciduous perennial tree in the family Araliaceae mainly distributed in the East Asia. In Korea, this species is of ecological and medical importance. Because typical populations of this species are small and distributed in patches, $K.$ $pictus$ has been considered as a narrow habitat species. To understand the genetic diversity and population structure of this species, the sequence variation of the nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) region was analyzed among 18 different $K.$ $pictus$ populations in the present investigation. The nrDNA ITS sequences of Korean populations investigated in this study showed identical of 616 bp in length, and no any nucleotide variation was found in the entire nrDNA ITS region sequence. This result suggested that the $K.$ $pictus$ populations in Korea might belong to the same isolate, and no mutation was found in the nrDNA ITS region. Compared with other known ITS sequence sources from $K.$ $pictus$ populations, only four variable nucleotide sites were found within the entire ITS region. Very narrow genetic diversity appearing in the population level of $K.$ $pictus$ makes us hypothesize that their relatively isolated habitats. The long-lived traits might be one main reason. However, another probability was that the nr-DNA ITS region might be noneffective in classifying populations of $K.$ $pictus$. Thus, to further understand the phylogenetic relationship of $K.$ $pictus$ populations, more samplings should be performed based on more DNA sequences.

키워드

참고문헌

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피인용 문헌

  1. Predicting impacts of climate change on habitat connectivity of Kalopanax septemlobus in South Korea vol.71, 2016, https://doi.org/10.1016/j.actao.2016.01.005