Microbial Ecology

, Volume 65, Issue 3, pp 626–637

Novel Microbial Populations in Deep Granitic Groundwater from Grimsel Test Site, Switzerland

  • Uta Konno
  • Mariko Kouduka
  • Daisuke D. Komatsu
  • Kousuke Ishii
  • Akari Fukuda
  • Urumu Tsunogai
  • Kazumasa Ito
  • Yohey Suzuki
Environmental Microbiology

DOI: 10.1007/s00248-013-0184-5

Cite this article as:
Konno, U., Kouduka, M., Komatsu, D.D. et al. Microb Ecol (2013) 65: 626. doi:10.1007/s00248-013-0184-5

Abstract

Freshwater aquifers in granitic rocks are widespread microbial habitats in the terrestrial subsurface. Microbial populations in deep granitic groundwater from two recently drilled (1 and 2 years) and two old boreholes (14 and 25 years) were compared. The 16S rRNA gene sequences related to “Candidatus Magnetobacterium bavaricum”, Thermodesulfovibrio spp. of Nitrospirae (90.5–93.1 % similarity) and a novel candidate division with <90 % similarity to known cultivated species were dominant in all boreholes. Most of the environmental clones closely related to the novel lineages in Nitrospirae, which have been detected exclusively in deep groundwater samples. In contrast, betaproteobacterial sequences related to the family Rhodocyclaceae were obtained only from the recently drilled boreholes, which had higher total cell numbers. Catalyzed reporter deposition-fluorescence in situ hybridization (CARD-FISH) analysis supported the result from clone library analysis; betaproteobacterial cells were dominantly detected in recently drilled boreholes. These results suggest that while indigenous microbial populations represented by the novel phylotypes persisted in the boreholes for 25 years, betaproteobacterial species disappeared after 2 years owing to the change of substrate availability.

Supplementary material

248_2013_184_MOESM1_ESM.docx (80 kb)
ESM 1(DOCX 80 kb)

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Uta Konno
    • 1
  • Mariko Kouduka
    • 1
  • Daisuke D. Komatsu
    • 2
  • Kousuke Ishii
    • 3
  • Akari Fukuda
    • 4
  • Urumu Tsunogai
    • 2
  • Kazumasa Ito
    • 1
  • Yohey Suzuki
    • 1
  1. 1.Institute for Geo-Resources and EnvironmentNational Institute of Advanced Industrial Science and TechnologyTsukubaJapan
  2. 2.Earth and Planetary System Science, Faculty of ScienceHokkaido UniversitySapporoJapan
  3. 3.Chemical Engineering DepartmentIHI CorporationYokohamaJapan
  4. 4.Japan Atomic Energy AgencyMizunamiJapan