Members of the species complex stand out by unique virulence factors that allowed evolutionary transition to pathogenesis. Among the factors contributing to cryptococcosis is a morphological transformation into giant (Titan) cells. It remains unclear whether species outside of the / species complex are capable of titanization. We utilized two recently developed protocols that allow obtaining Titan cells to test if titanization occurs in non-/ species. We find that none of the tested strains, representing 10 species of basidiomycetous yeasts and the ascomycetous yeast , undergo significant titanization under conditions that promote robust Titan cell formation in / species complex. formed occasional enlarged cells through a mechanism potentially similar to that of titanization. Our findings suggest that titanization is a rare phenomenon among basidiomycetous yeasts that occurs mostly in members of the species complex.
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| http://dx.doi.org/10.1080/21505594.2020.1772657 | DOI Listing |
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