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Int J Syst Evol Microbiol 53 (2003), 1779-1783; DOI  10.1099/ijs.0.02615-0
© 2003 International Union of Microbiological Societies

Thialkalivibrio nitratireducens sp. nov., a nitrate-reducing member of an autotrophic denitrifying consortium from a soda lake

Dimitry Yu. Sorokin1,2, Tat'yana P. Tourova1, Klaas A. Sjollema3 and J. Gijs Kuenen2

1 Institute of Microbiology, Russian Academy of Sciences, Prospect 60-let Octyabrya 7/2, 117811 Moscow, Russia
2 Kluyver Laboratory of Biotechnology, Delft Technical University, Julianalaan 67, 2628 BC Delft, The Netherlands
3 Laboratory for Electron Microscopy, Biological Centre, University of Groningen, 9750 AA Haren, The Netherlands

Correspondence
Dimitry Yu. Sorokin
soroc{at}inmi.da.ru

Strain ALEN 2T was isolated from a mixed culture capable of complete autotrophic denitrification with thiosulfate as electron donor at pH 10; the mixed culture was enriched from sediment from Lake Fazda (Wadi Natrun, Egypt), a hypersaline alkaline lake. The isolate had large, non-motile, coccoid or barrel-shaped cells with intracellular sulfur globules. The bacterium was obligately chemolithoautotrophic. It grew with reduced sulfur compounds aerobically and anaerobically with nitrate as electron acceptor, nitrate being reduced to nitrite. It was moderately halophilic and obligately alkaliphilic. On the basis of genetic analysis and its unique phenotype, strain ALEN 2T (=DSM 14787T=UNIQEM 213T) is proposed as the type strain of a novel species of the genus Thialkalivibrio, Thialkalivibrio nitratireducens.

Abbreviations: SOB, sulfur-oxidizing bacteria

Published online ahead of print on 21 March 2003 as DOI 10.1099/ijs.0.02615-0.

The GenBank accession number for the 16S rDNA sequence of Thialkalivibrio nitratireducens ALEN 2T is AY079010.




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D. Yu. Sorokin, T. P. Tourova, E. M. Spiridonova, F. A. Rainey, and G. Muyzer
Thioclava pacifica gen. nov., sp. nov., a novel facultatively autotrophic, marine, sulfur-oxidizing bacterium from a near-shore sulfidic hydrothermal area
Int J Syst Evol Microbiol, May 1, 2005; 55(3): 1069 - 1075.
[Abstract] [Full Text] [PDF]


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