Reduction of uranium(VI) to uranium(IV) by clostridia.
Several different species of clostridia reduced U(VI) to U(IV) to various degrees. The optimal pH for U(VI) reduction is 5 to 6 in most cases; a Clostridium sp. showed the highest rate at pH 4. Nitrate did not affect U(VI) reduction, indicating that this process in clostridia is nitrate independent.
Brookhaven National Laboratory, Environmental Sciences Department, Building 490A, Upton, NY 11973, USA.
Weimin
W
Gao
Arokiasamy J
AJ
Francis
D001673:Biodegradation, Environmental; D003013:Clostridium / Q000145:classification / Q000378:metabolism*; D004269:DNA, Bacterial / Q000302:isolation & purification; D005285:Fermentation; D006863:Hydrogen-Ion Concentration; D010084:Oxidation-Reduction; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000302:isolation & purification; D011850:Radioactive Waste; D017422:Sequence Analysis, DNA; D014502:Uranyl Nitrate / Q000378:metabolism*
D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S; D011850:Radioactive Waste; D014502:Uranyl Nitrate