Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Pseudanabaena Species Diversity and Off-flavor Material (2-MIB) Production by Cyanobacteria in Korea

우리나라 Pseudanabaena 속 남조류 종다양성 및 남조류 기원 이취미 물질(2-MIB)의 발생

  • Kim, Keonhee (Human and Eco-Care Center, Sanghur College of Life Sciences, Konkuk University) ;
  • Park, Chaehongk (Human and Eco-Care Center, Sanghur College of Life Sciences, Konkuk University) ;
  • Shim, Yeonbo (Department of Environmental Health Science, Sanghur College of Life Sciences, Konkuk University) ;
  • Kim, Nan-young (Human and Eco-Care Center, Sanghur College of Life Sciences, Konkuk University) ;
  • Lee, Soogone (Department of Hangang River Basin Head Office, River Basin Management, K-Water) ;
  • Jang, Jaeyoung (Department of Hangang River Basin Head Office, River Basin Management, K-Water) ;
  • Lee, Karam (Department of Hangang River Basin Head Office, River Basin Management, K-Water) ;
  • Hwang, Soon-Jin (Department of Environmental Health Science, Sanghur College of Life Sciences, Konkuk University)
  • 김건희 (건국대학교 상허생명과학대학 Human and Eco-Care 센터) ;
  • 박채홍 (건국대학교 상허생명과학대학 Human and Eco-Care 센터) ;
  • 심연보 (건국대학교상허생명과학대학환경보건과학과) ;
  • 김난영 (건국대학교 상허생명과학대학 Human and Eco-Care 센터) ;
  • 이수곤 (한국수자원공사한강유역본부한강유역관리처) ;
  • 장재영 (한국수자원공사한강유역본부한강유역관리처) ;
  • 이가람 (한국수자원공사한강유역본부한강유역관리처) ;
  • 황순진 (건국대학교상허생명과학대학환경보건과학과)
  • Received : 2021.04.21
  • Accepted : 2021.07.20
  • Published : 2021.09.30
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Abstract

Off-flavor materials (geosmin and 2-methylisoborneol (2-MIB)) produced by microorganisms, such as, cyanobacteria and actinomycetes, cause freshwater use problems worldwide. Due to unpleasant taste and odor, these microorganisms have raised issues especially in drinking water resources. Recently, there has been increasing concern about 2-MIB and causal cyanobacteria, namely, Pseudanabaena, in Korea. However, material production and ecological dynamics remain largely unexplored. This study reviewed the distribution of Pseudanabaena, its species diversity, and the research trend of molecular ecology related to 2-MIB production in Korea. Based on published literature, we found that seven species of Pseudanabaena which include P. mucicola, P. limnetica, P. redekei, P. catenata, P. galeata, P. yagii, and P. cinerea appeared to occur in a variety of Korean water systems. All of these Pseudanabaena species were found in the North-Han River system (Lakes Soyang, Chuncheon, Uiam, and Paldang). Some of these species were also detected in other watersheds, but the precise species diversity was not identified. Species belonging to the Pseudanabaena genus are hard to classify through general microscopic alpha taxonomy, due to their very small cell size and similar morphological characters. Moreover, the potential of 2-MIB production cannot be detected by microscopic observation. Combining molecular ecological techniques, such as, environmental genomic materials (eDNA, eRNA) analyses to conventional methods could be useful to better understand the off-flavor material production and dynamics, thereby providing more efficient management strategies of freshwater systems.

Keywords

Acknowledgement

본 연구는 2021년 한강수계관리위원회 환경기초조사사업(북한강수계 맛냄새물질 발생원인 조사 및 관리대책수립)의 지원을 받아 수행되었습니다.

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