Development of a platform for information on mold odor-producing cyanobacteria that cause problems in freshwater.

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K12201
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 63040:Environmental impact assessment-related
• Research Institution: National Museum of Nature and Science, Tokyo
• Principal Investigator: Tuji Akihiro 独立行政法人国立科学博物館, 植物研究部, 研究主幹 (40356267)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: カビ臭産生シアノバクテリア / シアノバクテリア / 2-MIB / geosmin

Outline of Final Research Achievements

We conducted a comprehensive culture establishment and genetic analysis of mold odor-producing cyanobacteria in Japan. As a result, we found that geosmin-producing Dolichospermum hangangense is native to Japan. We also found that the geosmin-producing species initially thought to be in the genus Dolichospermum is most likely a new genus. Phylogenetic relationships between 2-MIB-producing genes and geosmin-producing genes were also examined using many new strains. The geosmin-producing species geoA was found to have almost no variation within the genus Dolichospermum.

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Free Research Field

微細藻類の分類と生態

Academic Significance and Societal Importance of the Research Achievements

本研究で見つかった新分類群や分類学的知見は水域の植物性プランクトンモニタリングですぐに活用可能であり、私たちもホームページなどでその結果を公表している。
また、得られた遺伝子は環境DNA解析（アンプリコン解析）を行うために基礎的な情報となる。