Open AccessAnaerobic, Nitrate-Dependent Oxidation of U(IV) Oxide Minerals by the Chemolithoautotrophic Bacterium Thiobacillus denitrificans
Author(s) -
Harry R. Beller
Publication year - 2005
Publication title -
applied and environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.552
H-Index - 324
eISSN - 1070-6291
pISSN - 0099-2240
DOI - 10.1128/aem.71.4.2170-2174.2005
Subject(s) - thiobacillus , nitrate , autotroph , bacteria , chemistry , anaerobic exercise , environmental chemistry , uranyl nitrate , inorganic chemistry , nitrite , nuclear chemistry , sulfur , biology , uranium , organic chemistry , metallurgy , materials science , physiology , genetics
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.
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