Earth’s Cryosphere, 2023, Vol. XXVII, No. 6, p. 43-49.
PERMAFROST MICROBIOLOGY
NEW PSYCHROACTIVE BACTERIA OF CRYOPEGS OF THE YAMAL PENINSULA
Ya.V. Ryzhmanova1,*, V.E. Trubitsyn1, E.M. Rivkina1, N.E. Suzina1, A.O. Plotnikov2, V.Ya. Kataev2, M.V. Molchanov3, N.V. Molochkov3, V.A. Shcherbakova1
1 Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, prospect Nauki 3, Pushchino, Moscow Region, 142290 Russia
2 Institute for Cellular and Intracellular Symbiosis. Ural Branch of the Russian Academy of Sciences, Pionerskaya St. 11, Orenburg, 460000 Russia
3 Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Institutskaya St. 3, Pushchino, Moscow Region, 142290 Russia
*Corresponding author; e-mail: ryzhmanova@gmail.com
The diversity and metabolic potential of microbial communities in insufficiently studied Yamal Peninsula cryopegs are presented. The total number of microorganisms within cryopegs was high and reached 106–108 cells/mL. At the same time, sulfate-reducing bacteria were only found in two out of three studied cryopegs in numbers not exceeding 103 cells/mL. Members of the bacterial genera Acetobacterium (strains K1/0, K1/6 =VKM B-3638, K1/7, K1/8), Labilibaculum (K2ST, =VKM B-3650T), and Trichococcus (K1TrT, =VKM B-3651Т) were isolated from cryopegs for the first time. All isolates were psychroactive bacteria able to grow at 6°C.
Keywords: permafrost, cryopeg, Yamal, sulfate-reducing bacteria, psychrophiles, Acetobacterium, Labilibaculum,
Trichococcus.
Recommended citation: Ryzhmanova Ya.V., Trubitsyn V.E., Rivkina E.M., Suzina N.E., Plotnikov A.O., Kataev V.Ya., Molchanov M.V., Molochkov N.V., Shcherbakova V.A., 2023. New psychroactive bacteria of cryopegs of the Yamal Peninsula. Earth’s Cryosphere XXVII (6), 43–49.