Carbon Source Competition in Biological Selenate Reduction under Other Oxyanions Contamination
نویسندگان
چکیده
منابع مشابه
Microbial reduction of selenium oxyanions by Anaeromyxobacter dehalogenans.
Selenium oxyanions are toxic to living organisms at excessive levels. The accumulation of selenium in certain environments requires the development of efficient detoxification processes. In this study, we demonstrated the ability of two Anaeromyxobacter dehalogenans strains to readily convert toxic Se(IV) to less toxic insoluble Se(0), as confirmed by energy-dispersive X-ray spectrometry and X-...
متن کاملDissimilatory selenate reduction potentials in a diversity of sediment types.
We measured potential rates of bacterial dissimilatory reduction of SeO(4) to Se in a diversity of sediment types, with salinities ranging from freshwater (salinity = 1 g/liter) to hypersaline (salinity = 320 g/liter and with pH values ranging from 7.1 to 9.8. Significant biological selenate reduction occurred in all samples with salinities from 1 to 250 g/liter but not in samples with a salini...
متن کاملResolution of distinct membrane-bound enzymes from Enterobacter cloacae SLD1a-1 that are responsible for selective reduction of nitrate and selenate oxyanions.
Enterobacter cloacae SLD1a-1 is capable of reductive detoxification of selenate to elemental selenium under aerobic growth conditions. The initial reductive step is the two-electron reduction of selenate to selenite and is catalyzed by a molybdenum-dependent enzyme demonstrated previously to be located in the cytoplasmic membrane, with its active site facing the periplasmic compartment (C. A. W...
متن کاملSelenate reduction by bacteria from a selenium-rich environment.
Samples collected from Kesterson Reservoir were screened for bacterial presence and selenate reduction capability. Selenate concentrations of 100 mg/liter were not toxic to indigenous bacteria. Of the 44 samples collected, 20 possessed microbial populations capable of reducing selenate. Reduction was observed in 4% of the water samples, 92% of the sediment samples, and 100% of the soil samples....
متن کاملElectrocatalytic reduction of nitrate and selenate by NapAB.
Bacterial cellular metabolism is renowned for its metabolic diversity and adaptability. However, certain environments present particular challenges. Aerobic metabolism of highly reduced carbon substrates by soil bacteria such as Paracoccus pantotrophus presents one such challenge since it may result in excessive electron delivery to the respiratory redox chain when compared with the availabilit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Processes
سال: 2020
ISSN: 2227-9717
DOI: 10.3390/pr8121645