Autor según el artículo: Mas, A.; Martí-Raga, M.; Peltier, E.; Beltran, G.; Marullo, P.

Departamento: Bioquímica i Biotecnologia

Autor/es de la URV: MAS BARON, ALBERTO; Martí-Raga, M.; Peltier, E.; BELTRAN CASELLAS, GEMMA; Marullo, P.

Palabras clave: Heterosis Saccharomyces cerevisiae

Resumen: Hybridization is known to improve complex traits due to heterosis and phenotypic robustness. However, these phenomena have been rarely explained at the molecular level. Here, the genetic determinism of Saccharomyces cerevisiae fermentation performance was investigated using a QTL mapping approach on an F1-progeny population. Three main QTL were detected, with positive alleles coming from both parental strains. The heterosis effect found in the hybrid was partially explained by three loci showing pseudooverdominance and dominance effects. The molecular dissection of those QTL revealed that the adaptation to second fermentation is related to pH, lipid, or osmotic regulation. Our results suggest that the stressful conditions of second fermentation have driven the selection of rare genetic variants adapted to maintain yeast cell homeostasis and, in particular, to low pH conditions.

Grupo de investigación: Biotecnologia Enològica

Áreas temáticas: Bioquímica i biotecnologia Bioquímica y tecnología Biochemistry and technology

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 2160-1836

Identificador del autor: n/a; n/a; n/a; 0000-0002-7071-205X; n/a

Fecha de alta del registro: 2017-03-06

Página final: 412

Volumen de revista: 7

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: http://www.g3journal.org/content/7/2/399

DOI del artículo: https://doi.org/10.1534/g3.116.037283

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2017

Página inicial: 399

Tipo de publicación: Article Artículo Article