Ballistosporomyces, a new ballistospore-forming anamorphic yeast genus.

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Abstract
A new genus Ballistosporomyces Nakase, Okada et Sugiyama in the Hyphomycetes is described for yeasts that reproduce by both non-ballistosporous conidia and ballistospores, but not by budding yeast cells. Non-ballistosporous conidia are produced on a sterigma-like stalk which proliferates sympodially or percurrently. Strains in this genus have Q-10 as the major isoprenologue of ubiquinone, do not containxylose in the cells, and show positive Diazonium blue B reaction. Two new species, Ballistosporomyces xanthus (type species) and B. ruber, are descirbed in the genuse. Ballistoporomyces xanthus has a G + C content of DNA of 62.1% mol% and forms yellow colonies, whereas B. ruber has a G + C content of DNA of 50.8% mol% and forms red colonies. Some properties of the new genus indicate a Ustilaginale affinity. Ontogenetic and chemotaxonomic comparisons are made between Ballistosporomyces and other supposedly related basidiomycetous yeast genera.

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