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ISSN 2410-7751 (Print)
ISSN 2410-776X (Online)


Biotechnologia Acta V. 13, No 2, 2020
Р. 38-47, Bibliography 22, English
Universal Decimal Classification: 579.63:577.29


D. R. Abdulina1, G. O Iutynska1, A. I. Aniskina2, M. M. Nikitin2

1D.K. Zabolotny Institute of Microbiology and Virology of the National Academy of Sciences of Ukraine, Kyiv
2GenBit LLC, Moscow, Russia

The study of detection effectiveness of sulfate-reducing bacteria (SRB) in the samples from various ecotopes by microbiological (cultural by serial dilutions) and molecular biological (by real-time PCR) methods with designed test-systems lyophilized on the silicon microchip was performed. The developed DSRM and SRB2 test-systems for detection of the functional gene dsrA presence, encoding one of the key enzyme of dissimilatory sulphate-reduction pathway — dissimilatory sulfite reductase were used. It was found that the minimal determined SRB titres in water samples were 104 cells/ml and in soil samples they were 102–105 cells/g of absolutely dry soil. In natural and man-caused samples, the amount of SRB detected by the microbiological method was correlated with calculated values determined by the molecular biological method, Pearson’s indexes were r = 0.41–0.69 (k = 11, P ≤ 0.01–0.05). Thus, real-time PCR assay with designed test systems lyophilized on the silicon microchips is a high-quality and rapid method for the detection of SRB in various natural and man-caused ecotopes.

Key words: dsrA gene, test-systems, sulfate-reducing bacteria, biocorrosion, real-time PCR.

© Palladin Institute of Biochemistry of National Academy of Sciences of Ukraine, 2020