New Records of Dothideomycetes from Freshwater Habitats in Korea

Dothideomycetes represents one of the largest classes within the Ascomycota, encompassing over 19,000 species across 23 orders, 110 families, and 1,261 genera. They are ubiquitously distributed in aquatic and terrestrial environments, functioning as saprobes, pathogens, and endophytes. During a survey of fungal species diversity in the class Dothideomycetes from freshwater environments in Korea, seven new records were isolated from freshwater samples collected at Cheongyang, Gumi, Gwangju, Jinan, Suncheon, and Tongyeong, Korea. Based on morphological characteristics and phylogenetic analysis (ITS, LSU rDNA regions, BenA, RPB2 and TEF1-α), the isolates were identified as Anteaglonium parvulum, A. queenslandicum, Cladosporium guizhouense, Keissleriella cirsii, Lorrainsmithia pennsylvanica, Nigrograna locuta-pollinis and Nothophoma pruni. To our knowledge, the isolates have never been previously described in Korea. These findings contribute to expanding taxonomic knowledge of freshwater fungi in Korea and enhancing the ecological and functional understanding of unrecorded fungal taxa. A more detailed morphological description and phylogenetic tree will be described here in the poster.