Effect of sulfide, selenite and mercuric mercury on the growth and methylation capacity of the sulfate reducing bacterium Desulfovibrio desulfuricans

2013 ◽  
Vol 449 ◽  
pp. 373-384 ◽  
Author(s):  
Hoang-Yen T. Truong ◽  
Yu-Wei Chen ◽  
Nelson Belzile
Keyword(s):  
Desulfovibrio Desulfuricans ◽  
Sulfate Reducing ◽  
Methylation Capacity ◽  
Mercuric Mercury

Physiologic studies with the sulfate-reducing bacterium Desulfovibrio desulfuricans: Evaluation for use in a biofuel cell

1996 ◽  
Vol 18 (5) ◽  
pp. 358-365 ◽  
Author(s):  
Michael J. Cooney ◽  
Edouard Roschi ◽  
Ian W. Marison ◽  
Ch. Comminellis ◽  
Urs von Stockar
Keyword(s):  
Desulfovibrio Desulfuricans ◽  
Biofuel Cell ◽  
Sulfate Reducing

Experimental Investigation on the Active Range of Sulfate-Reducing Bacteria for Geological Disposal

1994 ◽  
Vol 353 ◽  
Author(s):  
S. Fukunaga ◽  
H. Yoshikawa ◽  
K. Fujiki ◽  
H. Asano
Keyword(s):  
Experimental Investigation ◽  
Environmental Conditions ◽  
Desulfovibrio Desulfuricans ◽  
Sulfate Reducing Bacteria ◽  
Geological Disposal ◽  
Sulfate Reducing ◽  
Buffer Material ◽  
Ph Range ◽  
High Level ◽  
Reducing Bacteria

AbstractThe active range ofDesulfovibrio desulfuricans. a species of sulfate-reducing bacteria, was examined in terms of pH and Eh using a fermenter at controlled pH and Eh. Such research is important because sulfate-reducing bacteria (SRB) are thought to exist underground at depths equal to those of supposed repositories for high-level radioactive wastes and to be capable of inducing corrosion of the metals used in containment vessels.SRB activity was estimated at 35°C, with lactate as an electron donor, at a pH range from 7 to 11 and Eh range from 0 to -380 mV. Activity increased as pH approached neutral and Eh declined. The upper pH limit for activity was between 9.9 and 10.3, at Eh of -360 to -384 mV. The upper Eh limit for activity was between -68 and -3 mV, at pH 7.1. These results show that SRB can be made active at higher pH by decreasing Eh, and that the higher pH levels of 8 to 10 produced by use of the buffer material bentonite does not suppress SRB completely.A chart was obtained showing the active range ofDesulfovibrio desulfuricansin terms of pH and Eh. Such charts can be used to estimate the viability of SRB and other microorganisms when the environmental conditions of a repository are specified.

scholarly journals A Case of Liver Abscess withDesulfovibrio desulfuricansBacteremia

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Saho Koyano ◽  
Keita Tatsuno ◽  
Mitsuhiro Okazaki ◽  
Kiyofumi Ohkusu ◽  
Takashi Sasaki ◽  
...  
Keyword(s):  
Liver Abscess ◽  
Clinical Presentation ◽  
Anaerobic Bacteria ◽  
Desulfovibrio Desulfuricans ◽  
Clinical Specimens ◽  
Sulfate Reducing ◽  
Oral Amoxicillin ◽  
First Case ◽  
Causative Agents ◽  
Amoxicillin Clavulanic Acid

Desulfovibriospp. are gram-negative, sulfate-reducing, and anaerobic bacteria found in the digestive tract of humans. BecauseDesulfovibriospp. are infrequent causative agents of infectious diseases and are difficult to isolate and to identify from clinical specimens, the appropriate antibiotic therapy to infection withDesulfovibriospp. has not been determined. We report the first case of liver abscess with bacteremia due toDesulfovibrio desulfuricansto show the clinical presentation and treatment. The patient was successfully treated with intravenous piperacillin-tazobactam and oral amoxicillin-clavulanic acid.

Relationships between organic matter composition and methyl mercury content of offshore and carbon-rich littoral sediments in an oligotrophic lake

2003 ◽  
Vol 60 (7) ◽  
pp. 888-896 ◽  
Author(s):  
Martin Kainz ◽  
Marc Lucotte ◽  
Christopher C Parrish
Keyword(s):  
Organic Matter ◽  
Methyl Mercury ◽  
Lacustrine Sediments ◽  
Desulfovibrio Desulfuricans ◽  
Dry Weight ◽  
Mercury Content ◽  
Sulfate Reducing ◽  
Littoral Sediments ◽  
High Concentrations ◽  
Offshore Sediments

Relationships between organic matter (OM) compounds and methyl mercury concentrations ([MeHg]) have been examined in littoral and offshore sediments of Lake Lusignan (Québec). The highest [MeHg] were generally found at the sediment–water interface with exceptionally high concentrations at littoral sites (5.8 ± 1.3 ng·g dry weight–1), which were four times more elevated than at offshore sites (1.6 ± 0.77 ng·g dry weight–1). Source-specific fatty acid (FA) biomarkers identified that littoral sediments contained more than twice as much terrestrial and bacterial OM compounds than offshore sediments, whereas the amount of labile algal OM was three times higher at littoral sites. Results indicate that [MeHg] were higher in the presence of labile OM substrates, and the amount of terrestrial OM compounds could not predict [MeHg]. Correlations between [MeHg] and FA of Desulfovibrio desulfuricans (a sulfate-reducing bacterium producing MeHg) could significantly account for 36% of [MeHg] at offshore sites; however, no significant relationships were found at littoral sites. This study illustrates that the microbial dynamics involved in producing and degrading MeHg in lacustrine sediments are complex and cannot be predicted solely by the quantification of FA biomarkers in D. desulfuricans or by biomarkers in the OM itself.

Reduction of azo dyes by desulfovibrio desulfuricans

2000 ◽  
Vol 41 (12) ◽  
pp. 15-22 ◽  
Author(s):  
E. S. Yoo ◽  
J. Libra ◽  
U. Wiesmann
Keyword(s):  
Azo Dyes ◽  
Desulfovibrio Desulfuricans ◽  
Chemical Processes ◽  
Electron Acceptors ◽  
Potential Toxicity ◽  
Sulfate Reducing ◽  
Textile Finishing ◽  
Reactive Orange ◽  
Reducing Bacteria ◽  
Electron Carriers

Azo dyes are widely used in textile finishing, and have become of concern in wastewater treatment because of their color, bio-recalcitrance, and potential toxicity to animals and humans. Thus, wastewater with azo dyes must be decolorized and furthermore mineralized in appropriate systems combining biological and chemical processes. In this study, the potential for sulfate reducing bacteria (SRB) to decolorize azo dyes was studied, employing the pure culture of Desulfovibrio desulfuricans (D. desulfuricans) with varying sulfate levels. Under sulfate-rich conditions, the sulfide produced from sulfate respiration with pyruvate (electron donor) by D. desulfuricans chemically decolorized the azo dyes C. I. Reactive Orange 96 (RO 96) and C. I. Reactive Red 120 (RR 120). Under sulfate-depleted conditions (≤0.1 mmol/L), the decolorization of RO 96 and RR 120 occurred in correlation with the fermentation of pyruvate by D. desulfuricans. It is suggested that the electrons liberated from the pyruvate oxidation were transferred via enzymes and/or coenzymes (electron carriers) to the dyes as alternative terminal electron acceptors, giving rise to decolorization, instead of to the protons (H+), resulting in the production of H2. Both decolorization pathways were compared in light of bioenergetics and engineering aspects.

A comparison of the electrophoretic properties of the ATP-sulfurylases, APS-reductases, and sulfite reductases from cultures of dissimilatory sulfate-reducing bacteria

1973 ◽  
Vol 19 (3) ◽  
pp. 375-380 ◽  
Author(s):  
G. W. Skyring ◽  
P. A. Trudinger
Keyword(s):  
Desulfovibrio Desulfuricans ◽  
Sulfate Reducing Bacteria ◽  
Disc Electrophoresis ◽  
Sulfite Reductase ◽  
Electrophoretic Variation ◽  
Sulfate Reducing ◽  
Aps Reductase ◽  
Reducing Bacteria ◽  
Atp Sulfurylases

ATP-sulfurylases, APS-reductases, and sulfite reductases (SO3−2 → S−2) have been detected by gel disc electrophoresis in 13 cultures of dissimilatory sulfate-reducing bacteria and their electrophoretic properties have been compared. With respect to these three enzymes only, the results were indicative of some interspecies and intergenus homologies. In the Desulfovibrio strains (except Desulfovibrio desulfuricans 8301 which does not contain desulfoviridin), the major sulfite reductase was electrophoretically coincident with desulfoviridin and, in the Desulfotomaculum strains, with a brown protein. Some distinct patterns of electrophoretically distinguishable forms of APS-reductase were found. Considerable electrophoretic variation was found among the ATP-sulfurylases.

Contribution of Sulfate-Reducing Bacteria to the Electricity Generation in Microbial Fuel Cells

2014 ◽  
Vol 1008-1009 ◽  
pp. 285-289 ◽  
Author(s):  
Chong Yang Gao ◽  
Ai Jie Wang ◽  
Yang Guo Zhao
Keyword(s):  
Fuel Cells ◽  
Power Density ◽  
Microbial Fuel Cells ◽  
Electricity Generation ◽  
Desulfovibrio Desulfuricans ◽  
Sulfate Reducing Bacteria ◽  
Microbial Community Analysis ◽  
Electricity Production ◽  
Sulfate Reducing ◽  
Reducing Bacteria

Double-chambered microbial fuel cells (MFCs) were used to investigate the effect of sulfate and sulfate-reducing bacteria (SRB) on electricity generation by molybdate inhibition coupled with PCR-DGGE technique. Results showed that low influent sulfate (< 1470 mg/L) improved power density and voltage, while higher sulfate blocked the MFC efficiency. Molybdate inhibited the activity of SRB and consequently decreased MFC voltage and power density which confirmed some SRB were involved in the electricity generation. Microbial community analysis indicated thatDesulfovibrio desulfuricanscontributed to the electricity production and stability of MFC.

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