Abstract
Seventy yeast strains, representative of twenty-six ascogenous genera, four saprobic hemibasidiomycetous genera and thirteen genera of the Cryptococcales were tested for their reaction with the stabilized aromatic diazonium compound, Diazonium Blue B salt. An aqueous, buffered solution of this compound gave a characteristic red colouration with the colonies of the hemibasidiomycetous species and those Cryptococcales characterized by the hemibasidiomycetous cell-wall type. The characteristic colour reaction was not observed with colonies of either the ascomycetous yeasts or those Cryptococcales characterized by the ascomycetous cell-wall type.
The possible taxonomic use of the colour reaction with Diazonium Blue B salt as an affinitive characteristic is discussed.
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van der Walt, J.P., Hopsu-Havu, V.K. A colour reaction for the differentiation of ascomycetous and hemibasidiomycetous yeasts. Antonie van Leeuwenhoek 42, 157–163 (1976). https://doi.org/10.1007/BF00399460
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DOI: https://doi.org/10.1007/BF00399460