Effect of temperature on synthesis of polyphosphates in Yersinia pseudotuberculosis and Listeria monocytogenes under starvation conditions

Author： Buzoleva L.   Krivosheeva A.   Isachenko A.   Somova L.   Somov G.  

Publisher： MAIK Nauka/Interperiodica

ISSN： 0006-2979

Source： Biochemistry (Moscow), Vol.71, Iss.4, 2006-04, pp. : 437-440

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Abstract

It was found that at low temperature (6–8°C) in the absence of nitrogen supply and at the presence of phosphate ions in the medium, Yersinia pseudotuberculosis and Listeria monocytogenes are able to actively synthesize reserve substances as polyphosphates. Most of the bacterial polyphosphates are alkali-soluble, especially at the preliminary stage of cell growth (lag-phase). This is proved by electron microscopic studies of ultrastructure of model microorganisms. During a long starvation period under conditions of carbon and energy source deficit, L. monocytogenes and Y. pseudotuberculosis consume this biopolymer for biosynthetic and bioenergetic processes.

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