Open AccessTeunia siamensis f.a., sp. nov., a novel tremellaceous yeast species isolated from soil in a secondary peat swamp forest area
Author(s) -
Pannida Khunnamwong,
Noppon Lertwattanasakul,
Savitree Limtong
Publication year - 2020
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.004219
Subject(s) - swamp , biology , peat , ecology , botany , yeast , forestry , geography , genetics
The strain DMKU-XD44, representing an anamorphic novel yeast species, was isolated from soil collected in a peat swamp forest (PSF) area in Rayong Botanical Garden in eastern Thailand. On the basis of sequence analysis of the D1/D2 region of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) region, Teunia cuniculi CBS 10309 T was the most closely related species. The novel species differed from the T. cuniculi type by 2.5 % (14 nucleotide substitutions) in the D1/D2 region of the LSU rRNA gene and by 8.0 % (40 nucleotide substitutions) in the ITS region. The results of a phylogenetic analysis, based on the combined sequences of the ITS region and the D1/D2 region, indicated that DMKU-XD44 represents a member of the Teunia clade in the Cryptococcaceae ( Tremellales , Tremellomycetes , Agaricomycotina and Basidiomycota ) and is phylogenetically distinct from other species of the genus Teunia in the clade. Therefore, DMKU-XD44 represents a novel species of the genus Teunia . The name Teunia siamensis f.a., sp. nov. is proposed. The holotype is DMKU-XD44, while the MycoBank number is MB 832816.