Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Phylogenetic Analysis on Wild Cordyceps Collected from Miryang Region of South Korea

밀양근교에서 채집한 야생 동충하초 계통의 PCR 산물에 근거한 계통 유전학적 연구

  • Park, Hyeancheal (Department of Life Science & Environmental Biochemistry, Pusan National University) ;
  • Lee, Sangmong (Department of Life Science & Environmental Biochemistry, Pusan National University) ;
  • Park, Namsook (Life and Industry Convergence Research Institute, Pusan National University)
  • 박현철 (부산대학교 생명환경화학과) ;
  • 이상몽 (부산대학교 생명환경화학과) ;
  • 박남숙 (부산대학교 생명산업융합연구원)
  • Received : 2020.10.05
  • Accepted : 2020.12.08
  • Published : 2021.02.01
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Abstract

The phylogenetic relationships among thirty-two strains (P1~P32; including Cordyceps sp., Paecilomyces sp., Beauveria sp., Aranthomyces sp., Isaria sp. and Himenostilbe sp.) in Miryang region located in the southern part of Korea, were investigated based on internal transcribed spacer (ITS) sequences of ribosomal DNA. A fragment of ITS region was amplified by polymerase chain reaction (PCR) using the specific primer pairs ITS1 and ITS4. After obtained same size of PCR products from various strains, we cloned them into a pGEM-T easy vector to determine their sequences. BLAST analyses of the nucleotide sequence ITS1, 5.8S and ITS2 gene fragments revealed the identity and their phylogenetic relationship. Among 32 strains isolated from Miryang region, Cordyceps militaris was shared 100% sequences with Genbank (AY49191, EU825999, AY491992), while some species are not shared perfectly with reported sequences. For example, strain P17 (P. tenuipes in Ulju-gun Gaji Mountain) has some differences among the other strains of P. tenuipes (Miryang-si Jocheon-eup, Miryang-si Gaji Mountain) and those of gene bank. We conclude that ITS analyses with strains in the suburbs of Miryang in this study can be effectively used as a tool for classification, evaluation and collection of the natural eco-type genetic resources.

남부 지방의 밀양 근교에 자생하고 있는 야생 동충하초 균주(Cordyceps sp., Paecilomyces sp., Beauveria sp., Aranthomyces sp., Isaria sp., Himenostilbe sp.)를 채집 분리하여 rDNA 및 internal transcribed spacer (ITS) 부위의 염기서열을 비교하였다. ITS 영역에 특정적인 프라이머인 ITS1과 ITS4를 이용하여 PCR을 수행하여 증폭하였다. 다양한 균주에서 같은 크기의 PCR 생산물을 얻을 수 있었고, 이들의 서열분석을 위하여 pGEM-T easy 벡터에 클로닝하였으며, ITS1, 5.8S, ITS2 영역 부위의 염기서열들을 BLAST 수행하여 유연관계를 분석하였다. 밀양 근교에서 분리한 32개의 균주 중에 Cordyceps militaris는 서열이 등록된 유전정보 AY49191, EU825999, AY491992와 100% 일치하였으며, 몇 개의 종은 보고된 서열과 모두 일치하지는 않았다. 예를 들어 strain P17은 울주군 가지산에서 분리한 P. tenuipes로서 밀양시 조천읍 가지산에서 분리한 P. tenuipes와는 서열상에서 다른 부분들이 있었다. 결론적으로 밀양 근교의 균주들을 분리하는데 ITS영역분석이 분류와 검정에 효율적이고, 본 연구를 통하여 동충하초의 생태학적인 유전자원들을 확보할 수 있었다.

Keywords

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