Journal of Plant Biotechnology

The Korean Society of Plant Biotechnology (한국식물생명공학회)
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Molecular identification of medicinal herbs, Oldenlandia diffusa and Oldenlandia corymbosa based on nrDNA ITS region sequence

  • Sun, Yan-Lin (School of Life Sciences, Ludong University) ;
  • Wang, Dong (Department of Bio-Health Technology, College of Biomedical Science, Kangwon National University) ;
  • Yeom, Myung-Hun (R&D Center, Amore Pacific Co.) ;
  • Kim, Duck-Hee (R&D Center, Amore Pacific Co.) ;
  • Kim, Han-Gon (R&D Center, Amore Pacific Co.) ;
  • Hong, Soon-Kwan (Department of Bio-Health Technology, College of Biomedical Science, Kangwon National University)
  • Received : 2011.08.19
  • Accepted : 2011.09.05
  • Published : 2011.12.31
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Abstract

The medicinal herb Oldenlandia diffusa is known as a folk medicine for the treatment of hepatitis, sore throat, appendicitis, malignant tumors and urethral infection in Southern China and Korea. Another species O. corymbosa, is also used for the therapy of the similar conditions, however, only O. diffusa is referred to the medicinal herb by Chinese Pharmacopoeia. Due to their similar morphology, O. diffusa and O. corymbosa are often misidentified. To easily identify O. diffusa from O. corymbosa, the phylogenetic utility of nuclear ribosomal DNA (nrDNA) internal transcribed spacers (ITS) were investigated among different O. diffusa and O. corymbosa populations in Korea. The nrDNA ITS sequence of O. diffusa contained 791 bp, with GenBank accession number of JF837601-JF837602. The nrDNA ITS sequence of O. corymbosa was 785-786 bp, with GenBank accession number of JF837603-JF837611. The results showed that there are some certain divergences in the ITS region sequence between both species, even among different populations of the same species. Particularly, O. corymbosa ST-4 population showed the highest dissimilarity of the ITS region sequence with other nine populations of O. corymbosa and two populations of O. diffusa. This consequence makes us further understand the molecular diversification between O. corymbosa and O. diffusa, and help to promote the correct use and safety.

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