Coenzyme Q system in the classification of some ascosporogenous yeast genera in the families Saccharomycetaceae and Spermophthoraceae.

The Co-Q systems of 11 strains representing the genera Schwanniomyces, Lodderomyces, Lipomyces, Nematospora and Metschnikowia were determined. All the genera were characterized by the Q-9 system except for the genus Nematospora with needle-shaped ascospores. The only species, Nem. coryli, was found to have the Q-6 system. These results are discussed from the taxonomic point of view.