Autor según el artículo: Marta Sancho; Alicia Gutiérrez; Gemma Beltran; José Manuel Guillamon; Jonas Warringer

Departamento: Bioquímica i Biotecnologia

Autor/es de la URV: SANCHO FORNER, MARTA; Alicia Gutiérrez; BELTRAN CASELLAS, GEMMA; José Manuel Guillamon; Jonas Warringer

Palabras clave: growth Wine YEAST

Resumen: Wine yeast capacity to take up nitrogen from the environment and catabolize it to support population growth, fermentation, and aroma production is critical to wine production. Under nitrogen restriction, yeast nitrogen uptake is believed to be intimately coupled to reproduction with nitrogen catabolite repression (NCR) suggested mediating this link. We provide a time- and strain-resolved view of nitrogen uptake, population growth, and NCR activity in wine yeasts. Nitrogen uptake was found to be decoupled from growth due to early assimilated nitrogen being used to replenish intracellular nitrogen pools rather than being channeled directly into reproduction. Internally accumulated nitrogen was later mobilized to support substantial population expansion after external nitrogen was depleted. On good nitrogen sources, the decoupling between nitrogen uptake and growth correlated well with relaxation of NCR repression, raising the potential that the latter may be triggered by intracellular build-up of nitrogen. No link between NCR activity and nitrogen assimilation or growth on poor nitrogen sources was found. The decoupling between nitrogen uptake and growth and its influence on NCR activity is of relevance for both wine production and our general understanding of nitrogen use.

Grupo de investigación: Biotecnologia Enològica

Áreas temáticas: Enologia Enología Oenology

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

ISSN: 0175-7598

Identificador del autor: n/a; n/a; 0000-0002-7071-205X; n/a; 0000-0001-6144-2740

Fecha de alta del registro: 2016-04-14

Página final: 3265

Volumen de revista: 100

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

Enlace a la fuente original: https://link.springer.com/article/10.1007/s00253-015-7273-y

DOI del artículo: 10.1007/s00253-015-7273-y

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2016

Página inicial: 3255

Tipo de publicación: Article Artículo Article