Deoxyribonucleic Acid Base Composition and Deoxyribonucleic Acid/Deoxyribonucleic Acid Hybrid Formation in Psychrophobic and Related Yeasts

Deoxyribonucleic acid base composition in yeasts.

The deoxyribonucleic acid base composition of 15 species of yeasts was determined to obtain further clues to or supporting evidence for their taxonomic position. Species examined belonged to the genera Saccharomyces, Debaryomyces, Lodderomyces, Metschnikowia, and Candida. The range of moles per cent guanine plus cytosine (GC content) for all yeasts examined extended from 34.9 to 48.3%. The spor...

Deoxyribonucleic acid base composition of Pseudomonas piscicida.

The marine bacterium Pseudomonas piscicida has been characterized from a taxonometric analysis of phenotypic properties of 20 strains (Hansen, Weeks, and Colwell, J. Bacteriol. 89:752, 1965). The cultures showed a mean similarity of 80% and appeared to form a species cluster. The same cultures have now been analyzed for their deoxyribonucleic acid (DNA) base composition with the result that the...

Deoxyribonucleic Acid Base Composition of Desulfotomaculum nigrificans.

The sporeforming, dissimilatory sulfate-reducing bacteria have been reclassified by L. L. Campbell and J. R. Postgate (Bacteriol. Rev. 29:359, 1965) and placed in a new genus: Desuljbtomaculum. The thermophilic sulfate-reducing bacterium, Desulfotomaculum nigrificans (Clostridium nigrificans) was designated as the type species. In a previous study of 30 strains of nonsporulating sulfate-reducin...

Deoxyribonucleic acid base composition of myxobacteria.

Strains. The strains examined are all maintained in the Pasteur Culture Collection (PCC) and havenow been deposited in the American Type Culture Collection (ATCC). They are identified here by both PCC and ATCC strain numbers. Full strain histories, media employed for cultivation and the explanation of generic terminology are given by Rippka et al. (1979). An additional strain (Oscillatoria agar...

Deoxyribonucleic acid base composition and numerical taxonomy of yeasts in the genus Trichosporon.