Unveiling Trichosporon austroamericanum sp. nov. A Novel Emerging Opportunistic Basidiomycetous Yeast Species

Elaine C Francisco, Marie Desnos-Ollivier, Chendo Dieleman, Teun Boekhout, Daniel Wagner de C L Santos, José O Medina-Pestana, Arnaldo L Colombo, Ferry Hagen

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

During an epidemiological survey, a potential novel species within the basidiomycetous yeast genus Trichosporon was observed. The clinical strain was obtained from a urine sample taken from a Brazilian kidney transplant recipient. The strain was molecularly identified using the intergenic spacer (IGS1) ribosomal DNA locus and a subsequent phylogenetic analysis showed that multiple strains that were previously reported by other studies shared an identical IGS1-genotype most closely related to that of Trichosporon inkin. However, none of these studies provided an in-depth characterization of the involved strains to describe it as a new taxon. Here, we present the novel clinically relevant yeast for which we propose the name Trichosporon austroamericanum sp. nov. (holotype CBS H-24937). T. austroamericanum can be distinguished from other siblings in the genus Trichosporon using morphological, physiological, and phylogenetic characters.

Original languageEnglish
Pages (from-to)43
JournalMycopathologia
Volume189
Issue number3
DOIs
Publication statusPublished - 06 May 2024

Keywords

  • Trichosporon/classification
  • Phylogeny
  • DNA, Ribosomal Spacer/genetics
  • DNA, Fungal/genetics
  • Humans
  • Sequence Analysis, DNA
  • Brazil
  • Trichosporonosis/microbiology
  • Transplant Recipients
  • Cluster Analysis
  • Mycological Typing Techniques
  • Kidney Transplantation
  • Microscopy
  • Genotype

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