Acta Biologica Sibirica (Dec 2017)

Thermophilic facultative anaerobic bacteria of the genus Geobacillus from bottom sediments of Lake Baikal

  • T. A. Khanaeva,
  • O. N. Pavlova,
  • S. M. Chernitsyna,
  • I. A. Khalzov,
  • A. V. Khabuev,
  • A. A. Nikonova,
  • A. S. Novikova,
  • T. I. Zemskaya

DOI
https://doi.org/10.14258/abs.v3i3.3614
Journal volume & issue
Vol. 3, no. 3
pp. 39 – 46

Abstract

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Pure culture of thermophilic facultative anaerobic microorganism was isolated from surface sediment of methane seepage Posolsk Bank. New strain Geobacillus sp. PB15/Grf7geo does not differ from the typical strains by morphological and physiological-biochemical properties. It is able to withstand of wide temperature range with optimum growth between 55–60 °C. Chemoorganotroph. Phylogenetic analysis of the 16S rRNA sequence of the strain showed 97 % identity to cultivated strains of this genus. The strain forms a common clade with uncultivated representatives and does not cluster with sequences of cultivated strains within the genus Geobacillus in the phylogenetic tree. Strain Geobacillus sp. PB15/Grf7geo has been deposited to the collection of the VKM (=VKM B–3150T).

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