Abstract
The electrophysical properties of Escherichia coli XL-1 cells interacting with helper phage M13K07 were studied as a function of the phage-to-cell ratio and the contact time. The electro-optical signal of bacterial cells changed considerably as soon as 10 min after the onset of their incubation with phage particles, presumably due to phage adsorption on the cell surface. The maximum changes in the orientational spectra of cell suspensions were observed when the phage-to-cell ratio was 20. Selectivity studies showed that E. coli XL-1 cells interacting with the helper phage M13K07 in the presence of foreign microflora, such as E. coli K-12 or Azospirillum brasilense Sp7, can be identified by using their electrophysical properties. Changes in the orientational spectra of cell suspensions are interpreted with the stage of phage-bacterium interaction taken into account. The results obtained can probably be used to devise a new rapid method for identification of microorganisms and to study the particular stages of cell infection by bacteriophages.
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Translated from Mikrobiologiya, Vol. 74, No. 2, 2005, pp. 198–203.
Original Russian Text Copyright © 2005 by Bunin, Ignatov, Guliy, Zaitseva, O’Neil, Ivnitskii
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Bunin, V.D., Ignatov, O.V., Guliy, O.I. et al. The electrooptical parameters of suspensions of Escherichia coli XL-1 cells interacting with helper phage M13K07. Microbiology 74, 164–168 (2005). https://doi.org/10.1007/s11021-005-0047-2
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DOI: https://doi.org/10.1007/s11021-005-0047-2