PROBIEN 20416
INSTITUTO DE INVESTIGACION Y DESARROLLO EN INGENIERIA DE PROCESOS, BIOTECNOLOGIA Y ENERGIAS ALTERNATIVAS
Unidad Ejecutora - UE
artículos
Título:
Natural hybrids of S. cerevisiae x S. kudriavzevii share alleles with European wild populations of Saccharomyces kudriavzevii
Autor/es:
LOPES C.A.; BARRIO E.; QUEROL A.
Revista:
FEMS Yeast Research
Editorial:
Wiley-Blackwell
Referencias:
Año: 2010 vol. 10 p. 412 - 421
ISSN:
1567-1356
Resumen:
Saccharomyces kudriavzevii, a yeast species described from a pair of strains isolatedfrom decayed leaves in Japan, has recently been isolated from oak barks inPortugal. Some data suggest that these European S. kudriavzevii populations couldbe closely related to the S. kudriavzevii genetic background present in naturalhybrids isolated from wines and beers in different regions of Europe. However, amore exhaustive study of European S. kudriavzevii natural populations is necessaryto confirm this observation. In this study, new S. kudriavzevii isolates wererecovered from oak trees in different areas in Spain, and identified and characterizedaccording to their molecular and physiological features. The restrictionanalysis of 35 nuclear genes amplified by PCR demonstrated that all Spanish S.kudriavzevii isolates exhibit three gene alleles different from those present in theJapanese S. kudriavzevii type strain, but identical to the alleles previously reportedfor natural S. cerevisiaeS. kudriavzevii hybrids. These results clearly support thehypothesis of a European origin for these natural hybrids.
