doi: 10.4489/KJM.2025.53.2.6 Citation BibTeX RIS Mendeley

Five Pyrenochaetopsis Strains Isolated from Freshwater in Korea

Five Pyrenochaetopsis Strains Isolated from Freshwater in Korea

• Yoosun Oh (Biological Resources Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea)
• Wonsu Cheon (Biological Resources Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea)
• Jaeduk Goh (Biological Resources Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea)
• Chang Soo Lee (Biological Resources Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea)
• Hye Yeon Mun (Biological Resources Research Department, Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea)

Pyrenochaetopsis is a genus of filamentous fungi within the Cucurbitariaceae family (Ascomycota, Dothideomycetes, and Pleosporales). Pyrenochaetopsis is commonly isolated from the soil, plants, and marine sediments. Species in this genus are receiving attention owing their ecological functions and biotechnological potential given their roles as plant pathogens, decomposers, and production of bioactive compounds. Five previously unrecorded Pyrenochaetopsis species were isolated from freshwater environments in Korea and identified using internal transcribed spacer (ITS) sequencing. The strains were identified as P. conf luens NNIBRFG21038, P. kuksensis NNIBRFG33605, P. leptospora NNIBRFG33604, P. microspora NNIBRFG21054, and P. uberiformis NNIBRFG33601. Their morphological and physiological characteristics, including growth patterns, spore structure, and potential antimicrobial and enzymatic activities, were examined. These findings contribute to our understanding of the Pyrenochaetopsis diversity in Korea, providing foundational data for future ecological and applied studies.