Abstract
According to DNA hybridization data, thermophilic streptococci used in Russia as starters in the dairy industry are divided into six different genomovars, with a degree of DNA homology not exceeding 20–50%. The analysis of genomes from these genomovars using SmaI restriction endonuclease and pulsed-field gel electrophoresis revealed wide variability of the genome size. In some strains, the genome size considerably exceeded 2000 kbp. Most of the strains studied contained plasmids about 120 kbp in size.
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Botina, S.G., Lysenko, A.M., Sukhodolets, V.V. et al. Comparison of Genomes in Streptococcus thermophilus Strains of Different Origin. Microbiology 71, 707–711 (2002). https://doi.org/10.1023/A:1021488124817
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DOI: https://doi.org/10.1023/A:1021488124817