Articles producció científica> Bioquímica i Biotecnologia

Genetic causes of phenotypic adaptation to the second fermentation of sparkling wines in Saccharomyces cerevisiae

  • Datos identificativos

    Identificador: PC:2588
    Autores:
    Mas, A.Martí-Raga, M.Peltier, E.Beltran, G.Marullo, P.
    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.
  • Otros:

    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
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    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
  • Palabras clave:

    Vins escumosos
    Saccharomyces cerevisiae
    Fermentació
    Heterosis
    Saccharomyces cerevisiae
    Bioquímica i biotecnologia
    Bioquímica y tecnología
    Biochemistry and technology
    2160-1836
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