Genetic variability and physiological traits of Saccharomyces cerevisiae strains isolated from "Vale dos Vinhedos" vineyards reflect agricultural practices and history of this Brazilian wet subtropical area.

Autor: Crosato G; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy., Carlot M; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy.; Department of Agronomy Food Natural resources Animals and Environment (DAFNAE), University of Padova, Viale dell'Università, 16, 35020, Legnaro, PD, Italy., De Iseppi A; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy., Garavaglia J; Institute of Technology of Food for Health (itt Nutrifor), University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, 93022-750, Cristo Rei - São Leopoldo, RS, Brazil.; Department of Nutrition, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite Avenue, 245, 90050-170, Porto Alegre, RS, Brazil., Pinto LMN; Institute of Technology of Food for Health (itt Nutrifor), University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, 93022-750, Cristo Rei - São Leopoldo, RS, Brazil., Ziegler DR; Institute of Technology of Food for Health (itt Nutrifor), University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, 93022-750, Cristo Rei - São Leopoldo, RS, Brazil., Ramos RCS; Institute of Technology of Food for Health (itt Nutrifor), University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, 93022-750, Cristo Rei - São Leopoldo, RS, Brazil., Rossi RC; Institute of Technology of Food for Health (itt Nutrifor), University of Vale do Rio dos Sinos (UNISINOS), Avenida Unisinos, 950, 93022-750, Cristo Rei - São Leopoldo, RS, Brazil., Nadai C; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy., Giacomini A; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy. alessio.giacomini@unipd.it.; Department of Agronomy Food Natural resources Animals and Environment (DAFNAE), University of Padova, Viale dell'Università, 16, 35020, Legnaro, PD, Italy. alessio.giacomini@unipd.it., Corich V; Interdepartmental Centre for Research in Viticulture and Enology (CIRVE), University of Padova, Via XXVIII Aprile, 14, 31015, Conegliano, TV, Italy.; Department of Agronomy Food Natural resources Animals and Environment (DAFNAE), University of Padova, Viale dell'Università, 16, 35020, Legnaro, PD, Italy.
Jazyk: angličtina
Zdroj: World journal of microbiology & biotechnology [World J Microbiol Biotechnol] 2018 Jul 03; Vol. 34 (8), pp. 105. Date of Electronic Publication: 2018 Jul 03.
DOI: 10.1007/s11274-018-2490-z
Abstrakt: Vale dos Vinhedos appellation of origin has a very recent history as industrial wine making region. In this study we investigated the genetic and phenotypic variability of Saccharomyces cerevisiae strains isolated from South-Brazilian vineyards in order to evaluate strain fermentation aptitude and copper and sulphites tolerance. Merlot grape bunches were collected from three vineyards and yeast isolation was performed after single bunch fermentation. High genotypic variability was found and most of the genotypes revealed to be vine-specific. No industrial strain dissemination was present in the sampled vineyards, although it has been wildly reported in traditional winemaking countries. From the phenotypic traits analysis these Brazilian native strains showed good fermentation performances, good tolerance to sulphites and, in particular, a high copper tolerance level. Copper is the most important metal in the formulation of fungicides against downy mildew (Plasmopara viticola), one of the most harmful disease of the vines, and other fungal pests. The high tolerance to copper suggests an environmental adaptation to the strong use of copper-based fungicides, requested by the wet subtropical climate.
Databáze: MEDLINE
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