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Chaetosphaeriaceae sp. FL1790
Chaetosphaeriaceae sp. FL1790 on 2% malt extract agar (MEA). photo credit: J. M. U’Ren

Summary: Chaetosphaeriaceae sp. FL1790

Chaetosphaeriaceae sp. FL1790 was isolated from a decomposing needle of Pinus clausa at Archbold Biological Station, Florida as part of a study examining endophytic and saprotrophic fungal communities across North America (U’Ren & Arnold, 2016). We identified this isolate as an unidentified species of Chaetosphaeriaceae (Pezizomycotina, Sordariomycetes, Chaetosphaeriales) using ITS-partial LSU rDNA sequencing. Based on ITS rDNA sequence similarity, we determined that fungi with this genotype also occur as endophytic fungi in living photosynthetic tissues. Described species of Chaetosphaeriaceae occur worldwide in both temperate and tropical climates and are typically saprobes of decaying wood and decomposed plant substrates (Fernández et al., 2006; Cannon & Kirk, 2007). Comparative genomic analyses of FL1790 will provide an important framework for understanding the evolution of ecological modes and substrate use in the Sordariomycetes.


Cannon, P. F., P. M. Kirk. 2007. Fungal families of the world. Wallingford, UK: CAB International. pp. 65–66. ISBN 0-85199-827-5.

Fernández, F. , A. Miller, S. Huhndorf, F. Lutzoni & S. Zoller. 2006. Systematics of the genus Chaetosphaeria and its allied genera: morphological and phylogenetic diversity in north temperate and neotropical taxa. Mycologia. 98: 121–130.

U’Ren, J. M., A. E. Arnold. 2016. Diversity, taxonomic composition, and functional aspects of fungal communities in living, senescent, and fallen leaves at five sites across North America. PeerJ. e2768.