Torulaspora nypae sp. nov., a novel yeast species isolated from nipa (Nypa fruticans Wurmb.) inflorescence sap in southern Thailand.

Torulaspora nypae sp. nov., a novel yeast species isolated from nipa (Nypa fruticans Wurmb.) inflorescence sap in southern Thailand. Int J Syst Evol Microbiol. 2019 Nov 28;: Authors: Kaewwichian R, Khunnamwong P, Am-In S, Jindamorakot S, Limtong S Abstract Two strains (YSP-384 and YSP-399), representing a novel Torulaspora species, were isolated from two nipa inflorescence sap samples collected in Trang province in the southern part of Thailand. The two strains had identical sequences of the D1/D2 domains of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) regions. The two strains were closest to Torulaspora maleeae CBS 10694T, but with 1.1 % nucleotide substitutions in the D1/D2 domains of the LSU rRNA gene and 5.2 % nucleotide substitutions in the ITS regions. Phylogenetic analysis based on the concatenated sequences of the ITS regions and the D1/D2 domains of the LSU rRNA gene supported that the two strains represented a distinct species in the genus Torulaspora. Some phenotypic characteristics of the two strains differed from T. maleeae including the two strains have ability to assimilate d-xylose, d-glucono-δ-lactone and melizitose, and inability to ferment maltose and raffinose, whereas T. maleeae has opposite results. Therefore, the two strains are described as representing a novel species, for which the name Torulaspora nypae sp. nov. was proposed. PMID: 31778349 [PubMed - as supplied b...
Source: International Journal of Systematic and Evolutionary Microbiology - Category: Microbiology Authors: Tags: Int J Syst Evol Microbiol Source Type: research