The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Microbiological Characteristics and Physiological Functionalities of Unrecorded Wild Yeast Strains in the Soils of Hajodae and Gyungpodae Beaches in Korea

동해안 하조대와 경포대 해수욕장 주변 토양으로부터 분리한 국내 미기록 야생효모들의 균학적 특성과 생리활성

  • Kim, Ha-Kun (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Kim, Ji-Yoon (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Han, Sang-Min (Department of Biomedicinal Science and Biotechnology, Paichai University) ;
  • Kim, Changmu (Microorganism Resources Division, National Institute of Biological Resources) ;
  • Lee, Jong-Soo (Department of Biomedicinal Science and Biotechnology, Paichai University)
  • 김하근 (배재대학교 바이오.의생명공학과) ;
  • 김지윤 (배재대학교 바이오.의생명공학과) ;
  • 한상민 (배재대학교 바이오.의생명공학과) ;
  • 김창무 (국립생물자원관 미생물자원과) ;
  • 이종수 (배재대학교 바이오.의생명공학과)
  • Received : 2019.05.31
  • Accepted : 2019.09.19
  • Published : 2019.09.30
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Abstract

The goal of this study was to isolate and characterize the wild yeast strains in the soils of Hajodae and Gyungpodae Beaches, Gyungpo Lake in Kangwon-do, Korea and evaluate their anti-demential and tyrosinase inhibitory activities. Among the 27 yeast strains isolated from 30 soil samples from Hajodae Beach, Cyberlindnera culbertsonii HJ31-1, Dothichiza pithyophila HJ22-4, Metschnikowia bicuspidata HJ16-1, and Sakaguchia cladiensis HJ14-1 were recorded for the first time in Korea. Additionally, six of the 55 wild yeast strains isolated from 45 soil samples from Gyungpodae Beach and Gyungpo Lake had not previously been detected in Korea, such as Aureobasidium melanogenum JR3-1. The microbiological characteristics and anti-demential and tyrosinase inhibitory activities of these previously unrecorded yeasts were investigated. Almost all of them were oval-shaped and had ascospores except for Dothichiza pithyophila HJ22-4, Diutina siamensis JR37-5, and Canadida gelsemii DC 35-1. Furthermore, they were all sugar-tolerant and able to grow in 20% glucose-containing YPD broth, except for Cyberlindnera culbertsonii HJ31-1. Diutina siamensis JR37-5 had the highest tyrosinase inhibitory activity (30.9%).

우리나라 강원도 동해안 해수욕장 주변 토양의 야생효모들의 종 분포특성을 알아보고자 하조대와 경포대 해수욕장, 경포호수 주변 토양들로부터 야생효모들을 분리, 동정하였고, 이들 중 국내 미기록 효모들을 선별하여 이들의 균학적 특성과 생리활성 등을 조사하였다. 하조대 해수욕장 주변 토양 30점 시료들로부터 22종, 27균주의 야생효모들을 분리, 동정하였고 경포대 해수욕장과 경포호수 주변 토양 45점에서 Aureobasidium melanogenum JR 3-13을 포함하는 39종 55균주의 야생효모들을 분리하였다. 이들 두 해수욕장에서 분리한 야생효모들 중 Cyberlindnera culbertsonii HJ31-1, Dothichiza pithyophila HJ22-4, Metschnikowia bicuspidata HJ16-1, Sakaguchia cladiensis HJ14-1, Aureobasidium melanogenum JR3-1, Diutina siamensis JR37-5, Metschnikowia colchici JR2-2, Pseudozyma pruni JR13-2, Sporophora toruliformis JR24-1과 Candida gelsemii DC35-1등 10균주들이 국내 미기록 효모들로 최종 선별되었다. 이들은 대부분 구형으로 출아법으로 영양증식을 하였고 Cyberlindnera culbertsonii HJ31-1, Metschnikowia bicuspidata HJ16-1, Sakaguchia cladiensis HJ14-1, Aureobasidium melanogenum JR3-1, Metschnikowia colchici JR2-2, Pseudozyma pruni JR13-2과 Sporophora toruliformis JR24-1등은 자낭포자를 형성하였다. Aureobasidium melanogenum JR3-1 등 4종의 미기록 효모들은 vitamin을 함유하지 않은 YPD 배지에서도 생육하였고 Cyberlindnera culbertsonii HJ31-1외에 9균주들이 20% 포도당을 함유한 YPD 배지에서 생육하는 내당성 효모들이었다. 이들 국내 미기록 야생효모들의 무세포추출물들중 Diutina siamensis JR37-5균주가 30.9%의 가장 높은 tyrosinase 저해활성을 나타내었고 Aureobasidium melanogenum JR3-1 균주도 20.3%의 tyrosinase 저해활성을 보였다.

Keywords

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