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Nitrososphaera viennensis gen. nov., sp. nov., an aerobic and mesophilic, ammonia-oxidizing archaeon from soil and a member of the archaeal phylum Thaumarchaeota

Open access
Stieglmeier, Michaela, Klingl, Andreas, Alves, Ricardo J. E., Rittmann, Simon K.-M. R., Melcher, Michael, Leisch, Nikolaus, Schleper, Christa·2014·International Journal of Systematic and Evolutionary Microbiology

Abstract

A mesophilic, neutrophilic and aerobic, ammonia-oxidizing archaeon, strain EN76 T, was isolated from garden soil in Vienna (Austria). Cells were irregular cocci with a diameter of 0.6–0.9 µm and possessed archaella and archaeal pili as cell appendages. Electron microscopy also indicated clearly discernible areas of high and low electron density, as well as tubule-like structures. Strain EN76 T had an S-layer with p3 symmetry, so far only reported for members of theSulfolobales. Crenarchaeol was the major core lipid. The organism gained energy by oxidizing ammonia to nitrite aerobically, thereby fixing CO 2, but growth depended on the addition of small amounts of organic acids. The optimal growth temperature was 42 °C and the optimal pH was 7.5, with ammonium and pyruvate concentrations of 2.6 and 1 mM, respectively. The genome of strain EN76 T had a DNA G+C content of 52.7 mol%. Phylogenetic analyses of 16S rRNA genes showed that strain EN76 T is affiliated with the recently proposed phylumThaumarchaeota, sharing 85 % 16S rRNA gene sequence identity with the closest cultivated relative ‘Candidatus Nitrosopumilus maritimus’ SCM1, a marine ammonia-oxidizing archaeon, and a maximum of 81 % 16S rRNA gene sequence identity with members of the phylaCrenarchaeotaandEuryarchaeotaand any of the other recently proposed phyla (e.g. ‘Korarchaeota’ and ‘Aigarchaeota’). We propose the nameNitrososphaera viennensisgen. nov., sp. nov. to accommodate strain EN76 T. The type strain ofNitrososphaera viennensisis strain EN76 T( = DSM 26422 T = JMC 19564 T).Additionally, we propose the familyNitrososphaeraceaefam. nov., the orderNitrososphaeralesord. nov. and the class Nitrososphaeria classis nov.

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Metadata

Authors
Stieglmeier, M., Klingl, A., Alves, R. J. E., Rittmann, S. K.-M. R., Melcher, M., Leisch, N., & Schleper, C.
Venue
International Journal of Systematic and Evolutionary Microbiology
Published
2014-08-01
Volume
64
Issue
Pt_8
Pages
2738-2752
ISSN
  • 1466-5026 (ISSN-L)
  • 1466-5034
OpenAlex
W2072762503
Cited by
304
References
9
FWCI
17.90
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Nitrososphaera viennensis gen. nov., sp. nov., an aerobic and mesophilic, ammonia-oxidizing archaeon from soil and a member of the archaeal phylum Thaumarchaeota. https://app.cochat.ai/papers/10.1099/ijs.0.063172-0
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Stieglmeier, M., Klingl, A., Alves, R. J. E., Rittmann, S. K.-M. R., Melcher, M., Leisch, N., & Schleper, C. (2014). Nitrososphaera viennensis gen. nov., sp. nov., an aerobic and mesophilic, ammonia-oxidizing archaeon from soil and a member of the archaeal phylum Thaumarchaeota. International Journal of Systematic and Evolutionary Microbiology. https://doi.org/10.1099/ijs.0.063172-0

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