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Título

The effect of two antifungal commercial formulations on the metabolism of a commercial Saccharomyces cerevisiae strain and their repercussion on fermentation evolution and phenylalanine catabolism

AutorSieiro Sampedro, Thais; Alonso del Real, Javier CSIC ORCID; Briz Cid, Noelia; Rial Otero, Raquel; Querol, Amparo CSIC ORCID; Simal Gandara, Jesús
Palabras claveFungicides
Cell cycle
Ehrlich pathway
Aromatic compounds
Proteomics
Transcriptomics
Fecha de publicación4-jun-2020
EditorElsevier
CitaciónFood Microbiology 92:103554 (2020)
ResumenThe effect of two commercial formulations (incorporating mepanipyrim and tetraconazole as active substances) on the metabolism of Saccharomyces cerevisiae Lalvin T73™, growing on a synthetic grape must, and their influence on the alcoholic fermentation course and the biosynthesis of volatiles derived from phenylalanine catabolism was studied. No relevant effects were observed for mepanipyrim except for glycerol production. On the contrary, in the presence of tetraconazole many genes and some proteins related to cell cycle progression and mitosis were repressed. This fact could explain the lower biomass concentration and the lower sugar consumption registered for tetraconazole at the end of the study. However, the biomass-to-ethanol yield was higher in connection with the overexpression of the ADH1 gene. The presence of tetraconazole residues seems to accelerate the Ehrlich pathway. These results agree with the overexpression of several genes (BAT1, PDC1, PDC5, ADH1, SFA1, ATF2, PFK1, PFK2 and ARO3) and a higher abundance of two proteins (Gap1p and Atf2p) involved in this metabolic pathway.
Versión del editorhttps://doi.org/10.1016/j.fm.2020.103554
URIhttp://hdl.handle.net/10261/215421
DOI10.1016/j.fm.2020.103554
ISSN0740-0020
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