Distribution and morphology of colorless sulfur bacterium of the genus Thiothrix in water reservoirs of Baikal rift zone

  • Chernitsyna S.M. 1
  • Khalzov I.A. 1
  • Pogodaeva T.V. 1
  • Barkhutova D.D. 2
  • Lavrentieva E.V. 2
  • Zemskaya T.I. 1
  • 1 Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Ulan-Batorskaya Str., 3, Irkutsk, 664033, Russia
    2 Institute of General and Experimental Biology, Siberian Branch of the Russian Academy of Sciences, Sakhiaynovoi Str., 6, Ulan-Ude, 670047, Russia
Keywords: colorless sulfur bacteria, Thiothrix


The habitats of colorless sulfur bacteria of the genus Thiothrix have been investigated in 7 hot springs of the Baikal rift zone. The intensity of their development depended on the distance from the outlet of thermal water to the surface and the flow rate of water. The most massive fouling of Thiothrix was observed at the border of mixing thermal and river water (Umhei, Alla). Slight Thiothrix fouling was observed at a significant distance from the thermal water outlet of the Goryachinsk spring.