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Applied and Environmental Microbiology, April 2005, p. 2170-2174, Vol. 71, No. 4
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.4.2170-2174.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Anaerobic, Nitrate-Dependent Oxidation of U(IV) Oxide Minerals by the Chemolithoautotrophic Bacterium Thiobacillus denitrificans

Harry R. Beller*

Lawrence Livermore National Laboratory, Livermore, California

Received 11 June 2004/ Accepted 29 October 2004

Under anaerobic conditions and at circumneutral pH, cells of the widely distributed, obligate chemolithoautotrophic bacterium Thiobacillus denitrificans oxidatively dissolved synthetic and biogenic U(IV) oxides (uraninite) in nitrate-dependent fashion: U(IV) oxidation required the presence of nitrate and was strongly correlated with nitrate consumption. This is the first report of anaerobic U(IV) oxidation by an autotrophic bacterium.

* Mailing address: Lawrence Livermore National Laboratory, P.O. Box 808, L-542, Livermore, CA 94551-0808. Phone: (925) 422-0081. Fax: (925) 423-7998. E-mail: beller2{at}llnl.gov.

Applied and Environmental Microbiology, April 2005, p. 2170-2174, Vol. 71, No. 4
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.4.2170-2174.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Bargar, J. R., Bernier-Latmani, R., Giammar, D. E., Tebo, B. M. (2008). Biogenic Uraninite Nanoparticles and Their Importance for Uranium Remediation. ELEMENTS 4: 407-412 [Abstract] [Full Text]  
  • Letain, T. E., Kane, S. R., Legler, T. C., Salazar, E. P., Agron, P. G., Beller, H. R. (2007). Development of a Genetic System for the Chemolithoautotrophic Bacterium Thiobacillus denitrificans. Appl. Environ. Microbiol. 73: 3265-3271 [Abstract] [Full Text]  
  • Beller, H. R., Letain, T. E., Chakicherla, A., Kane, S. R., Legler, T. C., Coleman, M. A. (2006). Whole-Genome Transcriptional Analysis of Chemolithoautotrophic Thiosulfate Oxidation by Thiobacillus denitrificans under Aerobic versus Denitrifying Conditions.. J. Bacteriol. 188: 7005-7015 [Abstract] [Full Text]  
  • Beller, H. R., Chain, P. S. G., Letain, T. E., Chakicherla, A., Larimer, F. W., Richardson, P. M., Coleman, M. A., Wood, A. P., Kelly, D. P. (2006). The Genome Sequence of the Obligately Chemolithoautotrophic, Facultatively Anaerobic Bacterium Thiobacillus denitrificans. J. Bacteriol. 188: 1473-1488 [Abstract] [Full Text]  


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