Identification of yeasts within Saccharomyces sensu stricto complex by PCR-fingerprinting
2007
Biological relatedness makes species characterization of the industrially important Saccharomyces sensu stricto complex difficult. In this paper we present a set of PCR-fingerprinting markers based in Single Primer Amplification Reactions (SPAR) that, together with PCR-ribotyping and single gene RFLP analysis, can effectively identify individual species and fully characterize the hybrid nature of industrial isolates. With those markers, all six yeast species of the sensu stricto complex could be discriminated and we also identified errors in the previous taxonomic characterization of certain wine yeasts. The unique patterns generated by the SPAR markers could be useful in monitoring yeast populations during industrial fermentation processes and can be used to detect the appearance of yeast hybrids in these environments.
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