Biofilm formation by different serological variants of Listeria monocytogenes in association with Bacillus pumilus


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Abstract

Ability of Listeria monocytogenes serological variants belonging to phylogenetic lines I and II to form biofilms on glass, both in monoculture and in a consortium with Bacillus pumilus, was shown. After 72 h, both L. monocytogenes serological variants formed mature biofilms both in monoculture and in association with bacilli. The presence of B. pumilus in Listeria biofilms resulted in alteration of L. monocytogenes colony morphology, decrease in their enzymatic activity and aghesive capacity, enhanced virulence and hemolytic activity, and cell motility observed at 37°С. Importantly, all of these modifications of the biological characteristics were of a phenotypic nature and were restored when joint incubation of bacteria was terminated.

About the authors

L. S. Buzoleva

Far Eastern Federal University; Somov Institute of Epidemiology and Microbiology

Email: bogatyrenko.ea@dvfu.ru
Russian Federation, Vladivostok; Vladivostok

N. B. Tsvetkova

Somov Institute of Epidemiology and Microbiology

Email: bogatyrenko.ea@dvfu.ru
Russian Federation, Vladivostok

E. A. Bogatyrenko

Far Eastern Federal University

Author for correspondence.
Email: bogatyrenko.ea@dvfu.ru
Russian Federation, Vladivostok

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