title: Deoxyribonucleic acid base composition of species in the yeast genus Kluyveromyces van der Walt emend. van der Walt.
abstract: The deoxyribonucleic acid base composition (percent guanine + cytosine [GC]) was determined for 29 strains, representing 18 species of the genus Kluyveromyces. It was concluded that on the basis of GC content (47.4%) and other properties K. veronae occupies an uncertain position in the genus Kluyveromyces. The GC content of the remaining 17 species ranged from 35.3 to 43.4%, and three groups of species were recognized. The GC content of the first ranged from 35.3 to 38.0%; that of the second group from 39.5 to 41.7%; that of the third group from 42.4 to 43.4%. Several species revealed a nearly identical GC content. The GC contents do not correspond in all instances with the five groups of species proposed by van der Walt.
mesh_terms: D000096:Acetone; D002499:Centrifugation, Density Gradient; D003596:Cytosine / Q000032:analysis; D004247:DNA / Q000032:analysis* / Q000302:isolation & purification; D006147:Guanine / Q000032:analysis; D008722:Methods; D013045:Species Specificity; D013053:Spectrophotometry; D015003:Yeasts / Q000145:classification* / Q000254:growth & development
chemical_list: D000096:Acetone; D006147:Guanine; D003596:Cytosine; D004247:DNA