Psevdomonady kak parazity prosteǐshikh.

Translated title of the contribution: Pseudomonads as parasites of protozoa

V. I. Pushkareva, N. D. Konstantinova, V. I. Litvin, Vsevolod Popov, N. M. Shustrova, G. V. Safutina

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The experimental study of the interaction of Tetrahymena pyriformis with different microorganisms of the genus Pseudomonas, isolated from the soil, was made. The study revealed that T. pyriformis phagocytosed some Pseudomonas pigment-forming species (P. cepacia, P. putida, P. fluorescens, P. pirkettii). The most pronounced cytopathogenic effect was produced by P. cepacia. The dynamic observations of the ultrastructural features of interaction between P. cepacia and protozoa were made. Even at early stages of this interaction some types of parasitiferous phagosomes containing both intact bacteria capable of multiplication by binary division and Pseudomonas cells exhibiting different degrees of destruction were registered. In several phagosomes morphologically intact bacteria differing in their cell-wall profiles and the density of their cytoplasm and nucleotide were present simultaneously. More dense cells with sinuous cell-wall membranes were more virulent. By hour 18 one giant parasitiferous vacuole was formed by fusion of smaller phagosomes, which subsequently broke up, liberating a new generation of bacteria. In infected cells disturbances in the structure of their mitochondria and macronucleus appeared. During the first 2 days of the joint cultivation of P. cepacia and T. pyriformis the accumulation of bacteria occurred due to the selection and multiplication of digestion-resistant bacterial cells, which ensured the resistance of this Pseudomonas population in association with protozoa.

Original languageUndefined
Pages (from-to)4-10
Number of pages7
JournalZhurnal Mikrobiologii Epidemiologii i Immunobiologii
Issue number2
StatePublished - Feb 1992
Externally publishedYes

Fingerprint

Tetrahymena pyriformis
Pseudomonas
Phagosomes
Parasites
Bacteria
Cell Wall
Macronucleus
Vacuoles
Phagocytosis
Cell Division
Digestion
Mitochondria
Cytoplasm
Soil
Nucleotides
Joints
Cell Membrane
Population

ASJC Scopus subject areas

  • Immunology
  • Microbiology (medical)
  • Public Health, Environmental and Occupational Health

Cite this

Pushkareva, V. I., Konstantinova, N. D., Litvin, V. I., Popov, V., Shustrova, N. M., & Safutina, G. V. (1992). Psevdomonady kak parazity prosteǐshikh. Zhurnal Mikrobiologii Epidemiologii i Immunobiologii, (2), 4-10.

Psevdomonady kak parazity prosteǐshikh. / Pushkareva, V. I.; Konstantinova, N. D.; Litvin, V. I.; Popov, Vsevolod; Shustrova, N. M.; Safutina, G. V.

In: Zhurnal Mikrobiologii Epidemiologii i Immunobiologii, No. 2, 02.1992, p. 4-10.

Research output: Contribution to journalArticle

Pushkareva, VI, Konstantinova, ND, Litvin, VI, Popov, V, Shustrova, NM & Safutina, GV 1992, 'Psevdomonady kak parazity prosteǐshikh.', Zhurnal Mikrobiologii Epidemiologii i Immunobiologii, no. 2, pp. 4-10.
Pushkareva VI, Konstantinova ND, Litvin VI, Popov V, Shustrova NM, Safutina GV. Psevdomonady kak parazity prosteǐshikh. Zhurnal Mikrobiologii Epidemiologii i Immunobiologii. 1992 Feb;(2):4-10.
Pushkareva, V. I. ; Konstantinova, N. D. ; Litvin, V. I. ; Popov, Vsevolod ; Shustrova, N. M. ; Safutina, G. V. / Psevdomonady kak parazity prosteǐshikh. In: Zhurnal Mikrobiologii Epidemiologii i Immunobiologii. 1992 ; No. 2. pp. 4-10.
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