Archives of Microbiology

, Volume 154, Issue 6, pp 556–559 | Cite as

Thermoproteus uzoniensis sp. nov., a new extremely thermophilic archaebacterium from Kamchatka continental hot springs

  • E. A. Bonch-Osmolovskaya
  • M. L. Miroshnichenko
  • N. A. Kostrikina
  • N. A. Chernych
  • G. A. Zavarzin
Original Papers

Abstract

A new extremely thermophilic rod-shaped archaebacterium was found in the samples from hot springs and soil of the Uzon caldera (SW of Kamchatka pen.). Cells are rods from 1 to 20 μm in length and 0.3 to 0.4 μm in width, sometimes branching or with spherical protrusions on the ends. The cell wall consists of two layers: an internal one with distinct hexagonal structure and the outer one with less clear structure and variable thickness. Cells are non-motile and have no flagella. The new organism grows anaerobically by fermenting peptides, concurrently reducing elemental sulfur to H2S. Fermentation products are acetate, isobutyrate, isovalerate. The G+C content of the DNA is 56.5 mol. %. A new species Thermoproteus uzoniensis is described. Type strain is isolate Z-605, DSM 5262.

Key words

Hot springs Extremely thermophilic archaebacteria Sulfur-reduction Thermoproteus uzoniensis 

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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • E. A. Bonch-Osmolovskaya
    • 1
  • M. L. Miroshnichenko
    • 1
  • N. A. Kostrikina
    • 1
  • N. A. Chernych
    • 1
  • G. A. Zavarzin
    • 1
  1. 1.Institute of Microbiology of the USSR Academy of SciencesMoscowUSSR

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