English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/3074
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título : Mitotic recombination and genetic changes in Saccharomyces cerevisiae during wine fermentation
Autor : Puig, Sergi ; Querol, Amparo ; Barrio, Eladio ; Pérez Ortín, José E.
Palabras clave : Mitotic recombination
wine fermentation
vinification
Saccharomyces cerevisiae
Fecha de publicación : may-2000
Editor: American Society for Microbiology
Citación : Applied and Environmental Microbiology 66 (5) : 2057-2061 (2000)
Resumen: Natural strains of Saccharomyces cerevisiae are prototrophic homothallic yeasts that sporulate poorly, are often heterozygous, and may be aneuploid. This genomic constitution may confer selective advantages in some environments. Different mechanisms of recombination, such as meiosis or mitotic rearrangement of chromosomes, have been proposed for wine strains. We studied the stability of the URA3 locus of a URA3/ura3 wine yeast in consecutive grape must fermentations. ura3/ura3 homozygotes were detected at a rate of 1 x 10(-5) to 3 x 10(-5) per generation, and mitotic rearrangements for chromosomes VIII and XII appeared after 30 mitotic divisions. We used the karyotype as a meiotic marker and determined that sporulation was not involved in this process. Thus, we propose a hypothesis for the genome changes in wine yeasts during vinification. This putative mechanism involves mitotic recombination between homologous sequences and does not necessarily imply meiosis.
URI : http://hdl.handle.net/10261/3074
Aparece en las colecciones: (IATA) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.