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Utilisation of differential killer toxin sensitivity patterns for fingerprinting and clustering yeast strains
1Dipartimento di Biologia Vegetale e Biotecnologie Agroambientali, Sezione di Microbiologia Applicata, University of Perugia, Italy. pbuzzini@unipg.it
Abstract:
The differential killer sensitivity of 103 yeast cultures belonging to 12 species (genera Debaryomyces, Kluyveromyces, Saccharomyces, and Zygosaccharomyces), all previously taxonomically certified by nDNA-nDNA reassociation, against a given panel of 39 killer yeasts was used as a fingerprinting tool. All strains, with the only exception of eight cultures belonging to the species Zygosaccharomyces bailii, were characterised by a specific, individual sensitivity pattern (killer formula). Cluster analysis of binary sequences based on killer sensitivity of strains belonging to different genera is presented and discussed.