A New Species ofThelonectriaand a New Record ofCephalotrichum hinnuleumfrom Gunwi and Ulleungdo in Korea

摘要

Three fungal strains belonging to the class Sordariomycetes were isolated from soils collected from Gyeongsangbuk-do in Korea. They were identified asCephalotrichum hinnuleum(UD CT 1-3-3 and KNU-19GWF1) andThelonectria chlamydosporasp. nov. (UD ST 1-2-1).T. chlamydosporasp. nov. was morphologically identical toT. truncata, but its specific macroconidial dimensions, lower number of septations, and chlamydospore diameter render it distinct from the strains of the genusThelonectria. 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 degrees 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 x 3.7-5.1 mu m. The strains were also confirmed by using the multi-locus genes using internal transcribed spacer (ITS) regions, partial large subunit (LSU), translation elongation factor 1 alpha (TEF1-alpha), beta-tubulin (TUB2), and actin (ACT) genes. This is the discovery ofT. chlamydosporasp. nov. andCephalotrichum hinnuleum, a new record from Korea.