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Dynamics of the changes of electrophysical properties of Azospirillum brasilense Sp7 cells at their binding with wheat germ agglutinin

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Abstract

The electrooptical properties of Azospirillum brasilense Sp7 cell suspensions, have been studied at a specific interaction with wheat germ agglutinin (WGA), using the dependences between the changes of optical densities of cell suspensions at the electric orientation of cells and the orienting field frequencies of 740, 1000, 1450, 2000, and 2800 kHz. It was shown that the electrooptical (EO) properties of cell suspensions changed at the interaction of A. brasilense Sp7 cells with WGA and that the EO signal value changed irrespective of the cultivation conditions. At the same time, the dynamics of the changes of the EO properties of microbial suspensions was different for microbial cells grown under different conditions. It may be evidence of the differences in the cell surface properties of microbial cells, and of the dependence, between bacterial response to lectin and growth conditions. The possibility of using the EO analysis of bacterial suspensions for the study of the high-specific binding of polypeptide molecular signals with the bacterial target cells and for assessment of the dynamics of this process has been demonstrated.

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Authors and Affiliations

  1. Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia

    O. I. Guliy, L. P. Antonyuk, V. V. Ignatov & O. V. Ignatov

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  1. O. I. Guliy
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  2. L. P. Antonyuk
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  3. V. V. Ignatov
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  4. O. V. Ignatov
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Correspondence to O. V. Ignatov.

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Original Russian Text © O.I. Guliy, L.P. Antonyuk, V.V. Ignatov, O.V. Ignatov, 2008, published in Mikrobiologiya, 2008, Vol. 77, No. 6, pp. 782–787.

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Guliy, O.I., Antonyuk, L.P., Ignatov, V.V. et al. Dynamics of the changes of electrophysical properties of Azospirillum brasilense Sp7 cells at their binding with wheat germ agglutinin. Microbiology 77, 695–699 (2008). https://doi.org/10.1134/S0026261708060076

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  • DOI: https://doi.org/10.1134/S0026261708060076

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