A genetic study of natural flor strains of Saccharomyces cerevisiae isolated during biological ageing from Sardinian wines |
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| Authors: | Budroni M Giordano G Pinna G Farris G A |
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| Institution: | Dipartimento di Scienze Ambientali Agrarie e Biotecnologie Agro-Alimentari, Sezione di Microbiologia Generale ed Applicata, Università degli studi di Sassari, Italy. marilena@disaaba.agraria.uniss.it |
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| Abstract: | In this study, three flor strains of Saccharomyces cerevisiae were genetically characterized. They were isolated from biofilms on Sardinian sherry-like wines produced at family-run wineries where pure cultures of yeasts were not used. The study aimed to investigate the life cycle of these naturally-occurring flor strains, using a genetic procedure supplemented by analysis of subsequent meiotic generations. A semi-homothallic life cycle was found in three strains that could be helpful in a genetic improvement programme. |
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