Article Abstract:
Reduction of Fe(III), Cr(VI), U(VI), Tc(VII) by Deinococcus radiodurans R1 is discussed. D. radiodurans is exceptionally radiation-resistant, but has been described as strictly aerobic in respiration. Evidence that D radiodurans can reduce Fe(III) some organic compounds has been found. With humic acids or synthetic electron shuttle agents D. radiodurance can reduce U and Tc. Thus it has potential applications for remediation of metal- and radionuclide-contaminated sites where ionizing radiation or other DNA-damaging agents may cut back on activity of more sensitive organisms. It is an attractive candidate for genetic manipulations for enhancing organopollutant degradation.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
Research has been conducted on the microbial dissimilatory reduction processes. The effect of electron donor and bicarbonate ion on the pertechnetate ion enzymatic reduction has been investigated.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
An anaerobic Thermus strain that can perform the dissimilatory reduction of iron and grows by using oxygen and nitrate as terminal electron acceptors has been isolated. The bacterium, designated SA-01, was obtained from groundwater sampled at a depth of 3.2 km at a South African gold mine. Its 16S rRNA gene sequence is more than 98% similar with Thermus strain NMX2 A.1 which was isolated from a thermal spring in New Mexico. Strain SA-01 can reduce soluble Fe(III) complexed with citrate or nitriloacetic acid and small quantities of hydrous ferric oxide.
User Contributions:
Comment about this article or add new information about this topic: