کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4368735 1616674 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the farming system and vine variety on yeast communities associated with grape berries
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
Influence of the farming system and vine variety on yeast communities associated with grape berries
چکیده انگلیسی

Wine production in most countries is based on the use of commercial strains leading to the colonisation of the wineries by these strains with the consequent reduction of autochthonous biodiversity. This implies that wine styles could therefore become standardised. The vineyard could be an important source of native yeasts of oenological interest. For this reason the objective of this study was to compare two agronomic conditions with the aim of preserving yeast biodiversity in the vineyard. A three year sampling plan was designed to evaluate the influence of different agronomic parameters on the biodiversity of fermentative grape yeasts. Thus two vineyards, one organic and one conventional, with three different grape varieties (Shiraz, Grenache and Barbera) were chosen. In total, 27 samples were collected from both vineyards. Of these, 1080 colonies were isolated and a total of 9 species were identified. The strains identified as Saccharomyces cerevisiae were genotyped by microsatellite analysis obtaining nine different electrophoretic patterns. Classical ecology indexes were used to obtain the richness (S), the biodiversity (H') and the dominance (D) of the species studied. The results indicated a clear influence on grape associated yeast diversity of the phytosanitary treatment used in the vineyard. This is the first time that classical ecology indexes have been used to study the ecology of the spontaneous fermentation of grape musts and the species Candida sorbosa and Pichia toletana have been described in vineyards of the Madrid winegrowing region.

Research Highlights
► Different agronomic parameters on the biodiversity of fermentative grape yeasts were evaluated.
► Phytosanitary treatments used affects to the yeast populations.
► This is the first time that classical ecology indexes have been used to study the ecology of the spontaneous fermentation of grape musts.
► Candida sorbosa and Pichia toletana have been described in vineyards of the Madrid winegrowing region.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Food Microbiology - Volume 145, Issue 1, 31 January 2011, Pages 132–139
نویسندگان
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