Comparative Analysis of the Ability to Ferment Carbohydrates in Typical Strains and Genovariants of Vibrio cholerae Biovar El Tor
https://doi.org/10.21055/0370-1069-2014-2-69-72
Abstract
Carried out is a comparative analysis of the ability to ferment various carbohydrates in the 6 typical strains and 10 genovariants of V. cholerae biovar El Tor, imported to the territory of the Russian Federation. It has been revealed that genovariants, as well as typical El Tor vibrios, ferment mannose, saccharose, and mannite, but are inactive against arabinose and rhamnose. However, it is demonstrated that genovariants, as compared to typical strains of El Tor vibrios, possess lowered capacity to ferment glucose. Both, genovariants and classical vibrios, do not grow on the minimal media with 1 % content of glucose, and are unable to fully ferment glucose up to acetylmethylcarbinol in Voges-Proskauer reaction test. Put forward is a hypothesis that alteration of glucose metabolism in the studied strains of genovariants is probably due to changes in regulating mechanism of some virulence genes.
About the Authors
S. P. Zadnova
Russian Research Anti-Plague Institute “Microbe”
Russian Federation
Russian Federation
I. M. Krepostnova
Russian Research Anti-Plague Institute “Microbe”
Russian Federation
Russian Federation
Yu. V. Lozovsky
Russian Research Anti-Plague Institute “Microbe”
Russian Federation
Russian Federation
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Review
For citations:
Zadnova S.P., Krepostnova I.M., Lozovsky Yu.V. Comparative Analysis of the Ability to Ferment Carbohydrates in Typical Strains and Genovariants of Vibrio cholerae Biovar El Tor. Problems of Particularly Dangerous Infections. 2014;(2):69-72. (In Russ.) https://doi.org/10.21055/0370-1069-2014-2-69-72
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