THE MOLECULAR PHYLOGENY OF THE ASCOMYCETOUS YEAST GENUS HOLLEYA YAMADA BASED ON THE PARTIAL SEQUENCES OF 18S AND 26S RIBOSOMAL RIBONUCLEIC ACIDS

Abstract

The partial base sequences of 18S and 26S rRNAs of six strains of species in the genera Holleya, Nematospora, and Metschnikowia (Spermophthoraceae) were determined. The determinations of the partial base sequences (positions 1451 through 1618, 168 bases) of 18S rRNA have demonstrated that the genus Holleya is phylogenetically separable from the genera Nematospora and Metschnikowia, although the partial base sequences (positions 493 through 625, 133 bases; positions 1685 through 1835, 151 bases) of 26S rRNA in the genera Holleya and Nematospora were similar. Some discussions are presented from the taxonomic and phylogenetic points of view.