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KMID : 1160220200480050341
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Mycobiology
2020 Volume.48 No. 5 p.341 ~ p.350
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A New Species of Thelonectria and a New Record of Cephalotrichum hinnuleum from Gunwi and Ulleungdo in Korea
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Das Kallol
You Young-Hyun
Lee Seung-Yeol
Jung Hee-Young
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Abstract
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Three fungal strains belonging to the class Sordariomycetes were isolated from soils collected from Gyeongsangbuk-do in Korea. They were identified as Cephalotrichum hinnuleum (UD CT 1-3-3 and KNU-19GWF1) and Thelonectria chlamydospora sp. nov. (UD ST 1-2-1). T. chlamydospora sp. nov. was morphologically identical to T. truncata, but its specific macroconidial dimensions, lower number of septations, and chlamydospore diameter render it distinct from the strains of the genus Thelonectria. The strains UD CT 1-3-3 and KNU-19GWF1 were developed flat, velvety to felty, and golden gray to brown-gray after 14?days of incubation at 25?°C on PDA. These strains were produced polyblastic conidiogenous cells and conidia were pale brown to brown, smooth, thin-walled, subglobose to ellipsoidal, arranged in chains, and the diameters of 6.7?9.0?×?3.7?5.1?μm. The strains were also confirmed by using the multi-locus genes using internal transcribed spacer (ITS) regions, partial large subunit (LSU), translation elongation factor 1α (TEF1-α), β-tubulin (TUB2), and actin (ACT) genes. This is the discovery of T. chlamydospora sp. nov. and Cephalotrichum hinnuleum, a new record from Korea.
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KEYWORD
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Cephalotrichum hinnuleum, Sordariomycetes, Thelonectria chlamydospora
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