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Yeasts isolated from a fungus-growing ant nest, including the description of Trichosporon chiarellii sp. nov., an anamorphic basidiomycetous yeast

UNESP - Sao Paulo State University

¹ E-mail: pagnocca{at}rc.unesp.br

Thirty-nine yeast strains were recovered from a field nest of a primitive and putative new attine ant species in the genus Myrmicocrypta (Hymenoptera: Formicidae: tribe Attini). Yeasts isolated from the fungus garden and waste deposit included Candida dubliniensis, Candida oleophila, Cryptococcus haglerorum, and Hanseniaspora uvarum. In addition, one morphological type was massively isolated. Sequencing data of partial LSU rDNA and ITS region coupled with morphological and physiological characterization accomodated this morpho-type in a separate taxonomic position in relation to the known species of the genus Trichosporon (Basidiomycota: Trichosporonales). Here, we propose a novel yeast species named Trichosporon chiarellii FCP540806T (= CBS 11177T) based on the description of 34 isolates.