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| Metschnikowia sirindhorniae in Jindamorakot, Am-In, Kaewwichian, Khunnamwong et Limtong, 2025. Tropical Natural History. Suppl. 8; |
Abstract
Two strains, YSP-519 and YSP-478, respectively representing novel ascomycetous and basidiomycetous yeast species, were obtained from toddy palm inflorescence sap collected in Thailand. The ascomycetous yeast strain YSP-519 was closely related to Metschnikowia agaves CBS 7744T. There were 1.6% nucleotide substitutions (9 nucleotide substitutions and 2 gaps out of 555 nt) in the D1/D2 domains of the LSU rRNA gene and 0.7% nucleotide substitutions (3 nucleotide substitutions out of 454 nt) in the ITS regions. The basidiomycetous yeast strain YSP-478 was closely related to Moniliella pollinis CBS 461.67T. It had 0.5 % nucleotide substitutions (3 nucleotide substitutions out of 554 nt) in the D1/D2 domains of the LSU rRNA gene and 2.0% nucleotide substitutions (9 nucleotide substitutions out of 473 nt) in the ITS regions. Phylogenetic analysis based on the concatenated sequences of the ITS regions and the D1/D2 domains confirmed that the two strains represent two new species. The name Metschnikowia sirindhorniae f.a., sp. nov. is proposed for YSP-519T), and Moniliella princeps sp. nov. is proposed for YSP-478T. The holotypes of M. sirindhorniae and Mo. princeps are TBRC 10642T and TBRC 10641T, respectively and the ex-type are CGMCC 2.6079T and CGMCC 2.6078T, respectively. The MycoBank numbers of M. sirindhorniae and Mo. princeps are MB858878 and MB858879, respectively.
Keywords: Metschnikowia sirindhorniae f.s., sp. nov., Moniliella princeps sp. nov., novel yeast species, Thailand
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| Metschnikowia sirindhorniae sp. nov. YSP-519T. A. budding cells in YM broth after 3 days at 25 °C (bar, 10 μm); B. pseudomycelium formed on PDA after 7 days at 25 °C (bar, 10 μm); C. pseudomycelium in YM broth after 14days at 25 °C (bar, 10 μm). |
Metschnikowia sirindhorniae f.a., sp. nov.
Moniliella princeps sp. nov.
Sasitorn Jindamorakot, Somjit Am-In, Rungluck Kaewwichian, Pannida Khunnamwong and Savitree Limtong. 2025. Metschnikowia sirindhorniae f.a., sp. nov. and Moniliella princeps sp. nov., Two Novel Yeasts Species Isolated from Toddy Palm (Borassus flabellifer L.) Inflorescence Sap in Thailand. Tropical Natural History. Suppl. 8; 439-448. DOI: doi.org/10.58837/tnh.25.8.267713
