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Ultrastructural Changes of Bacteria in Static Cultures of Yersinia pseudotuberculosis under Long Storage under Conditions of Low Temperature

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Electron microscopy study revealed changes in the ultrastructure of bacteria of Yersinia pseudotuberculosis strains characterized by significantly reduced reproductive ability and virulence potential after long-term storage at low temperature of 4-8°C. Most bacterial cells contained dark cytosol with reduced cellular material or empty cytosol, while the cell wall was preserved. The revealed ultrastructural changes in the bacterial cells of the static culture of Y. pseudotuberculosis suggest that storage of strains under low positive temperatures could induce the transition of the majority of bacterial cell population to a dormant, non-cultivated state with a decrease in their virulence. This fact is of great scientific and applied importance in studies of causative agents of saprozoonoses, including pseudotuberculosis, which has the etiopathogenetic background of persistent infection.

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Authors and Affiliations

  1. G. P. Somov Research Institute of Epidemiology and Microbiology, Vladivostok, Russia

    L. M. Somova, N. F. Timchenko, I. N. Lyapun, E. I. Drobot, E. V. Matosova & M. P. Bynina

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  1. L. M. Somova
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  2. N. F. Timchenko
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  3. I. N. Lyapun
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  4. E. I. Drobot
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  5. E. V. Matosova
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  6. M. P. Bynina
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Corresponding author

Correspondence to L. M. Somova.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 170, No. 8, pp. 192-195, August, 2020

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Somova, L.M., Timchenko, N.F., Lyapun, I.N. et al. Ultrastructural Changes of Bacteria in Static Cultures of Yersinia pseudotuberculosis under Long Storage under Conditions of Low Temperature. Bull Exp Biol Med 170, 223–225 (2020). https://doi.org/10.1007/s10517-020-05038-7

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  • DOI: https://doi.org/10.1007/s10517-020-05038-7

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