Anaerobic, nitrate-dependent oxidation of U(IV) oxide minerals by the chemolithoautotrophic bacterium Thiobacillus denitrificans.
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.
Beller
Harry R
HR
Lawrence Livermore National Laboratory, Livermore, California, 94551-0081, USA. beller2@llnl.gov
D000693:Anaerobiosis; D003470:Culture Media; D009566:Nitrates / Q000378:metabolism*; D010084:Oxidation-Reduction; D010087:Oxides / Q000378:metabolism*; D013855:Thiobacillus / Q000254:growth & development* / Q000378:metabolism*; D014501:Uranium / Q000378:metabolism*
D003470:Culture Media; D009566:Nitrates; D010087:Oxides; D014501:Uranium