title: Three newly delimited species of Saccharomyces sensu stricto.
abstract: Deoxyribonucleic acid reassociation studies of 24 different wine and beer-associated strains of Saccharomyces confirmed the presence of three separate species. S. cerevisiae and S. bayanus strains had only 22% of their genomes in common. S. pastorianus, with intermediate hybridization values between S. cerevisiae and S. bayanus (52 and 72%, respectively) could possibly be a natural hybrid of the two species. S. pastorianus replaces S. carlsbergensis with which it is homologous for 93% of its genome, since the former species was described first by Hansen in 1904. These data do not agree with the results of traditional physiological tests.
authors: Dipartimento di Biologia Vegetale, Università degli Studi, Perugia, Italy.
authors: A V
authors: AV
authors: Martini
authors: A
authors: A
authors: Martini
mesh_terms: D004271:DNA, Fungal / Q000032:analysis*; D005285:Fermentation; D005690:Galactose / Q000378:metabolism; D005800:Genes, Fungal; D009693:Nucleic Acid Hybridization; D012440:Saccharomyces / Q000145:classification* / Q000235:genetics / Q000378:metabolism; D013053:Spectrophotometry
chemical_list: D004271:DNA, Fungal; D005690:Galactose