Sampling for MPN counts and sulfate reduction rates.In November 1994, pieces of a laminated, undisturbed mat (approximately 50 by 70 cm, 10 cm thick) were harvested by hand from a depth of 0.6 to 0.7 m on the eastern bank of Solar Lake, in water with a salinity of 85‰. This mat resembled the deep, flat mat type of Solar Lake (48). The mat pieces were transported to the nearby H. Steinitz Marine Biology Laboratory of Eilat, Israel, and stored for the duration of the experiments (2 to 3 days) in a hypersaline pond with 90‰ salinity at a depth of 0.4 to 0.5 m. These mat samples were used for most-probable-number (MPN) counts of sulfate-reducing bacteria and for sulfate reduction rate measurements. The extent of the oxic zone in these Solar Lake mats and the mat slicing scheme were determined as follows. The steepest oxygen and sulfide gradients, and the maximal depth of the oxic zone, occur in Solar Lake mats between 10 am and 2 pm, centered at around 12 am (49, 65). Noontime light intensities ...
PCR primer sets for the 16S rRNA gene of six phylogenetic groups of sulfate-reducing bacteria (SRB) were designed. Their application in conjunction with group-specific internal oligonucleotide probes was used to detect SRB DNA in samples of landfill leachate. Six generic/suprageneric groups could be differentiated: DESULFOTOMACULUM:; DESULFOBULBUS:; DESULFOBACTERIUM:; DESULFOBACTER:; DESULFOCOCCUS:-DESULFONEMA:-DESULFOSARCINA:; DESULFOVIBRIO:-DESULFOMICROBIUM: The predicted specificities of the PCR primer and oligonucleotide probe combinations were confirmed with DNA from reference strains. In all cases, the PCR primers and probes were specific, the only exception being that the Desulfococcus-Desulfonema-Desulfosarcina (group 5) PCR primers were able to amplify DNA from DESULFOBACTERIUM: (group 3) reference strains but these groups could nevertheless be differentiated with the internal oligonucleotide probes. The proliferation of SRB in landfill sites interferes with methanogenesis and waste ...
p>An evidence describes the source of an annotation, e.g. an experiment that has been published in the scientific literature, an orthologous protein, a record from another database, etc.,/p> ,p>,a href="/manual/evidences">More…,/a>,/p> ...
1F22: A proton-NMR investigation of the fully reduced cytochrome c7 from Desulfuromonas acetoxidans. Comparison between the reduced and the oxidized forms.
As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.
Sulfate-reducing bacteria comprise a diverse and ecologically interactive group of anaerobic prokaryotes which share an extraordinary trait: growth by sulfate respiration with hydrogen sulfide as a major end-product. Sulfate-reducers are found in diverse environments ranging from estuaries to geological oil-bearing formations.
Domain architecture and assignment details (superfamily, family, region, evalue) for gi|328953891|ref|YP_004371225.1| from Desulfobacca acetoxidans DSM 11109. Plus protein sequence and external database links.
DOLOMIT (PETROGRAPHIE); DOLOMIT (MINERALOGIE); HALOPHILE MIKROORGANISMEN + SALZTOLERANTE MIKROORGANISMEN; DISSIMILIERENDE SULFAT- ODER SCHWEFEL-REDUZIERENDE BAKTERIEN (MIKROBIOLOGIE); SEDIMENTZUSAMMENSETZUNG (ABLAGERUNGSMILIEU); GEOMIKROBIOLOGIE; CHEMISCHE AUSFÄLLUNG (ABLAGERUNGSMILIEU); MIGRATION VON CHEMISCHEN ELEMENTEN (GEOCHEMIE); KÜSTEN (ABLAGERUNGSMILIEU); LAGUNENMILIEU (ABLAGERUNGSMILIEU); DOLOMITE (PETROGRAPHY); DOLOMITE (MINERALOGY); HALOPHILIC MICROORGANISMS + SALT TOLERANT MICROORGANISMS; DISSIMILATORY SULFATE- OR SULFUR-REDUCING BACTERIA (MICROBIOLOGY); SEDIMENT COMPOSITION (SEDIMENTARY ENVIRONMENT); GEOMICROBIOLOGY (GEOBIOLOGY); CHEMICAL PRECIPITATION (SEDIMENTARY ENVIRONMENT); MIGRATION OF CHEMICAL ELEMENTS (GEOCHEMISTRY); COASTS (SEDIMENTARY ENVIRONMENT); LAGOONAL ENVIRONMENT (SEDIMENTARY ENVIRONMENT ...
Article Isolation and identification of the sulphate-reducing bacteria strain H1 and its function for hydrolysed polyacrylamide degradation. The sulphate-reducing bacteria strain H1 with the function for Hydrolysed Polyacrylamide (HPAM) degradation w...
TY - JOUR. T1 - Mercury methylation in Sphagnum moss mats and its association with sulfate-reducing bacteria in an acidic Adirondack forest lake wetland. AU - Yu, Ri Qing. AU - Adatto, Isaac. AU - Montesdeoca, Mario R.. AU - Driscoll, Charles T. AU - Hines, Mark E.. AU - Barkay, Tamar. PY - 2010/12. Y1 - 2010/12. N2 - Processes leading to the bioaccumulation of methylmercury (MeHg) in northern wetlands are largely unknown. We have studied various ecological niches within a remote, acidic forested lake ecosystem in the southwestern Adirondacks, NY, to discover that mats comprised of Sphagnum moss were a hot spot for mercury (Hg) and MeHg accumulation (190.5 and 18.6 ng g-1 dw, respectively). Furthermore, significantly higher potential methylation rates were measured in Sphagnum mats as compared with other sites within Sunday Lakes ecosystem. Although MPN estimates showed a low biomass of sulfate-reducing bacteria (SRB), 2.8 × 104 cells mL-1 in mat samples, evidence consisting of (1) a twofold ...
A large fraction of globally produced methane is converted to CO|SUB|2 |/SUB| by anaerobic oxidation in marine sediments. Strong geochemical evidence for net methane consumption in anoxic sediments is based on methane profiles, radiotracer experiments and stable carbon isotope data. But the elusive microorganisms mediating this reaction have not yet been isolated, and the pathway of anaerobic oxidation of methane is insufficiently understood. Recent data suggest that certain archaea reverse the process of methanogenesis by interaction with sulphate-reducing bacteria. Here we provide microscopic evidence for a structured consortium of archaea and sulphate-reducing bacteria, which we identified by fluorescence in situ hybridization using specific 16S rRNA-targeted oligonucleotide probes. In this example of a structured archaeal-bacterial symbiosis, the archaea grow in dense aggregates of about 100 cells and are surrounded by sulphate-reducing bacteria. These aggregates were abundant in gas-hydrate-rich
The purpose of this study was to characterize the distribution and activity of sulfate-reducing bacteria in tailings and sediments impacted by effluents from mining and smelting operations in the Norilsk area in northern Siberia. The Norilsk mining complex involves three smelter operations, a hydrometallurgical plant, and extensive tailings areas located in the permafrost zone. Sulfate reduction rates measured with a (35)SO(4)(2-) tracer technique under various in-situ conditions ranged from 0.05 to 30 nmol S cm(-3) day(-1). Acetate and glucose addition greatly stimulated sulfate reduction, whereas lactate had less effect. The most pronounced stimulation of sulfate reduction (6.5-fold) was observed with phosphate amendment. Most-probable-number (MPN) counts of sulfate-reducing bacteria in media with glucose, ethanol, lactate, and acetate as electron donors were generally highest at around 10(7) cells ml(-1). The actual MPN counts varied with the sample, electron donor, and incubation conditions ...
5%) of the cells in the enrichment culture. These results are consistent with the observation that known Desulfovibrio species do not utilize aromatic hydrocarbons, the predominant substrates in the enrichment culture. All known sulfate-reducing bacteria which utilize aromatic compounds belong to a separate branch, the Desulfobacteriaceae (suggested family). Most members of this family are complete oxidizers. For specific hybridization with members of this branch, the probe had to be modified by a nucleotide exchange. Indeed, this modified probe hybridized with more than 95% of the cells in the enrichment culture. The results show that completely oxidizing, alkylbenzene-utilizing sulfate-reducing bacteria rather than Desulfovibrio species have to be considered in attempts to understand the microbiology of sulfide production in oil wells, tanks, and pipelines when no electron donors other than the indigenous oil constituents are available.>. Degradative capacities and 16S rRNA-targeted ...
A denaturing gradient gel electrophoresis (DGGE) method was developed to assess the diversity of dsrB (dissimilatory sulfite reductase beta-subunit)-genes in sulfate-reducing communities. For this purpose a PCR primer pair was optimized for the amplification of a similar to 350 bp dsrB gene fragment that after DGGE gel electrophoresis enabled us to discriminate between dsrB
The viability of low-temperature sulfate reduction with hydrogen as electron donor was studied with a bench-scale gas-lift bioreactor (GLB) operated at 9 degrees C. Prior to the GLB experiment, the temperature range of sulfate reduction of the inoculum was assayed. The results of the temperature gradient assay indicated that the inoculum was a psychrotolerant mesophilic enrichment culture that had an optimal temperature for sulfate reduction of 31 degrees C, and minimum and maximum temperatures of 7 degrees C and 41 degrees C, respectively. In the GLB experiment at 9 degrees C, a sulfate reduction rate of 500-600 mg l(-1) d(-1), corresponding to a specific activity of 173 mg SO42- g VSS-1 d(-1), was obtained. The electron flow from the consumed H-2-gas to sulfate reduction varied between 27% and 52%, whereas the electron flow to acetate production decreased steadily from 15% to 5%. No methane was produced. Acetate was produced from CO2 and H-2 by homoacetogenic bacteria. Acetate supported the ...
Measurements of bacterial sulfate reduction and dissolved oxygen (O2) in hypersaline bacterial mats from Baja California, Mexico, revealed that sulfate reduction occurred consistently within the well-oxygenated photosynthetic zone of the mats. This evidence that dissimilatory sulfate reduction can occur in the presence of O2 challenges the conventional view that sulfate reduction is a strictly anaerobic process. At constant temperature, the rates of sulfate reduction in oxygenated mats during daytime were similar to rates in anoxic mats at night: thus, during a 24-hour cycle, variations in light and O2 have little effect on rates of sulfate reduction in these mats. ...
Lineage F.Lineage F is deeply diverging and defined by two highly similar DSR sequences not closely related to any available pure culture sequence. It demonstrates a weak specific association withDesulfotomaculum ruminis by KITCH analysis but forms an independent lineage by all other applied treeing methods.. There is a general need in microbial ecology to more directly relate community structure to community functions. Within the analytical framework of comparative gene sequencing, the most direct linkages are provided by genes encoding key physiological attributes. Several genes have been used in this way, including those for nitrogenase (3, 52-54), [NiFe] hydrogenase (48), ribulose bisphosphate carboxylase/oxygenase (33), methane monooxygenase (30), and ammonia monooxygenase (36, 37). However, with the possible exception of ammonia monooxygenase (restricted to two well-defined lineages within the proteobacteria), none of these genes provide fully comprehensive or consistent coverage. The DSR ...
5 Enrichments Sediment sample in 50 ml Pfennig bottle Incubated @ 30 o C Checked regularly for turbidity, blackening, H 2 S smell… Observed microscopically 3 ml culture was transferred to a new bottle for further enrichment. Basal marine mineral medium Na 2 SO 4 (30 mM) Sodium lactate (10 mM) NaHCO 3 (30 mM) 7 vitamin solution SL 10 (Trace element sol.) Resazurin Na 2 S (1 mM) pH (7.2) ...
The influence of the presence of certain amino acids at different concentrations on the catabolic activity of the bacteria Desulfotomaculum ruminis was studied. Introduction of amino acids of the simple chain molecule in concentrations up to 10 g/dm3 in the Starkey media leads to a small...
We have, as many of you know, issued two large paperback collections of Crowley s fiction, The Drug and Other Stories, and The Simon Iff Stories and Other Works (Wordsworth Editions, UK). These were done for a nominal royalty fee in order to sound out the depth of the market for Crowley in paperback at a low price-point, and they seemed like good titles for introducing Crowley to a wider audience. The endnotes were a lot of work, and give a preview of some of the new research done for Crowley s unabridged Confessions. If you haven t ordered, do-they re very reasonable (Simon Iff is currently (April 2013) $4.50 and The Drug is $7.19 with free shipping worldwide from www.bookdepository.com). And very readable, too. They are not at all what you might find floating on the internet-these have been carefully proofed and corrected, and draw on all available archival sources.. I have only just emerged from a very deep editorial rabbit-hole that lasted much of the last year, and am pleased to report that ...
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Koido K. (1), Koks S. (1), Nikopensius T. (2), Maron E. (3), Altmae S. (2), Heinaste E. (2), Vabrit K. (2), Tammekivi V. (2), Hallast P. (2), Kurg A. (2), Shlik J. (3), Vasar V. (3), Metspalu A. (2) & Vasar E. (1) ...
TY - JOUR. T1 - Desulfotomaculum genus-and subgenus-specific 16S rRNA hybridization probes for environmental studies. AU - Hristova, Krassimira R.. AU - Mau, Margit. AU - Zheng, Dandan. AU - Aminov, Rustam I.. AU - Mackie, Roderick I.. AU - Gaskins, H. Rex. AU - Raskin, Lutgarde. PY - 2000/1/1. Y1 - 2000/1/1. N2 - Based on comparative analysis of 16S rRNA sequences and the recently established phylogeny of the genus Desulfotomaculum, a set of phylogenetically nested hybridization probes was developed and characterized. A genus-specific probe targets all known Desulfotomaculum species (with the exception of Desulfotomaculum acetoxidans), and five specific probes target subclusters within the Desulfotomaculum genus. The dissociation temperature of each probe was determined experimentally. Probe specificities were verified through hybridizations with pure culture rRNA isolated from a wide variety of target and non-target organisms and through an evaluation of probe nesting using samples obtained ...
TY - JOUR. T1 - Pathway of propionate formation in Desulfobulbus propionicus. AU - Stams, A.J.M.. AU - Kremer, D.R.. AU - Nicolaij, K.. AU - Weenk, G.. AU - Hansen, T.A.. PY - 1984. Y1 - 1984. N2 - Whole cells of Desulfobulbus propionicus fermented [1-13C]ethanol to [2-13C] and [3-13C]propionate and [1-13C]-acetate, which indicates the involvement of a randomizing pathway in the formation of propionate. Cell-free extracts prepared from cells grown on lactate (without sulfate) contained high activities of methylmalonyl-CoA: pyruvate transacetylase, acetase kinase and reasonably high activities of NAD(P)-independent L(+)-lactate dehydrogenase NAD(P)-independent pyruvate dehydrogenase, phosphotransacetylase, acetate kinase and reasonably high activity of NAD(P)-independent L(+)-lactate dehydrogenase, fumarate reductase and succinate dehydrogenase. Cell-free extracts catalyzed the conversion of succinate to propionate in the presence of pyruvate, CoA and ATP and the oxaloacetate-dependent conversion ...
Most sulfate-reducing microorganisms (SRM) present in subsurface marine sediments belong to uncultured groups only distantly related to known SRM and it remains unclear how changing geochemical zones and sediment depth influence their community structure. We mapped the community composition and abundance of SRM by amplicon-sequencing and quantifying dsrB, which encodes dissimilatory sulfite reductase subunit beta, in sediment samples covering different vertical geochemical zones ranging from the surface sediment to the deep sulfate-depleted subsurface at four locations in Aarhus Bay, Denmark. SRM were present in all geochemical zones including sulfate-depleted methanogenic sediment. The biggest shift in SRM community composition and abundance occurring across the transition from bioturbated surface sediments into non-bioturbated sediments below, where redox fluctuations and input of fresh organic matter due to macrofaunal activity are absent. SRM abundance correlated with sulfate reduction rates ...
The Black Sea is the largest anoxic water basin on Earth and its stratified water column comprises an upper oxic, middle suboxic and a lower permanently anoxic, sulfidic zone. The abundance of sulfatereducing bacteria (SRB) in water samples was determined by quantifying the copy number of the dsrA gene coding for the alpha subunit of the dissimilatory (bi)sulfite reductase using real-time polymerase chain reaction. The dsrA gene was detected throughout the whole suboxic and anoxic zones. The maximum dsrA copy numbers were 5 ¥ 102 and 6.3 ¥ 102 copies ml-1 at 95 m in the suboxic and at 150 m in the upper anoxic zone, respectively. The proportion of SRB to total Bacteria was 0.1% in the oxic, 0.8-1.9% in the suboxic and 1.2-4.7% in the anoxic zone. A phylogenetic analysis of 16S rDNA clones showed that most clones from the anoxic zone formed a coherent cluster within the Desulfonema-Desulfosarcina group. A similar depth profile as for dsrA copy numbers was obtained for the concentration of ...
ID DESAS_1_PE1015 STANDARD; PRT; 284 AA. AC DESAS_1_PE1015; C8W4B2; DT 00-JAN-0000 (Rel. 1, Created) DT 00-JAN-0000 (Rel. 2, Last sequence update) DT 00-JAN-0000 (Rel. 3, Last annotation update) DE SubName: Full=Phosphate ABC transporter, inner membrane subunit PstC; DE (DESAS_1.PE1015). GN OrderedLocusNames=Dtox_1094; OS DESULFOTOMACULUM ACETOXIDANS DSM 771. OC Bacteria; Firmicutes; Clostridia; Clostridiales; Peptococcaceae; OC Desulfotomaculum. OX NCBI_TaxID=485916; RN [0] RP -.; RG -.; RL -.; CC -!- SEQ. DATA ORIGIN: Translated from the HOGENOM CDS DESAS_1.PE1015. CC Desulfotomaculum acetoxidans DSM 771, complete genome. CC / IFO 0083) chromosome G, complete sequence. CC -!- ANNOTATIONS ORIGIN:C8W4B2_DESAS CC -!- SUBCELLULAR LOCATION: Membrane; Multi-pass membrane protein (By CC similarity). CC -!- SIMILARITY: Belongs to the binding-protein-dependent transport CC system permease family. CC -!- GENE_FAMILY: HOG000074141 [ FAMILY / ALN / TREE ] DR UniProtKB/Swiss-Prot; C8W4B2; -. DR EMBL; ...
This is a new project that explores the process of biologically-induced precipitation and growth of Fe-hydroxides, oxyhydroxides, and oxides by microaerophilic bacteria and of ZnS (sphalerite) by sulfate-reducing bacteria under anoxic natural conditions. Other research focuses on the nucleation and growth of clay mineral products of biomineralization.This work overlaps directly with our work on nanocrystalline materials". Source: Jill Banfield, U. Wisconsin, Madison. Website: http://www.geology.wisc.edu/~jill/tennyson/tennyson.html. NSF Funded: yes. ...
Aleister Crowleys O.T.O.-groups are filled up with his concept of Thelema: a new scheme to sort out History, Religion, Philosophy, Magick and everyday life. (49*) A lot of Crowley-O.T.O.-members do not feel that sperm only transports the Holy Logos. (50*) This originally is considered a misunderstanding of the process of procreation. With the advance of Science, they assume that both the male and the female are both equally responsible for procreation. Nevertheless they follow the qabalistic sense of the male seed as the Logos to a certain extent: the woman functions as the "giver of form." (51*) Gnostic doctrines are modified in Thelema as the doctrine of True Will: that every man and woman has a "reason" to be here: that they have "chosen" to descend into this rotten place, that they have a mission to accomplish, which they have forgotten. It is their task not simply to escape, but also to remember why they came, and to fulfill this function. (52*) Nevertheless, Thelema itself seems to ...
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Pitting corrosion is characterised by the formation of small anodes and corresponding large cathodes, which allow the formation of pits in the metal matrix. A number of mechanisms have been put forward to account for the involvement of SRB in this process including: cathodic depolarization of hydrogen, bacterial sulphide acting as the cathode, and changes in pH due to sulphate-reducing bacteria (SRB). To date there has been little success in reproducibly inducing SRB pitting of stainless steels in a laboratory system. A concentric electrode has been designed in which a small anode is artificially produced within a large cathode by applying a galvanic current of 12 muA /sq cm. During the application of this galvanic current, various consortia and axenic cultures of bacteria are allowed to colonise the surface of the stainless steel concentric electrode. After seventy-two hours the induced current is removed and the resultant current monitored. Electrochemical impedance spectroscopy (EIS) is carried out
Lake Fryxell should be allected more strongly by the DIC input from streams than Lake Hoare because it receives much higher loads of DIC (tables 1 and 2). Using the modified formula, normalizing the DIC input with the lake area and assuming a mixing of the incoming stream water with the uppermost meter of the lakes water column, Lake Fryxell annually received 3.8%, 0.7% and 2.1% (average = 2.2%) of the DIC pool in the uppermost meter. The values for Lake Hoare are 9.3%, 5.5% and 5.5% (average = 6.8%). The absolute influx into Lake Hoare is much smaller, but because the lake has sucha low concentration of DIC it plays a more important role than in Lake Fryxell.. Primary productivity rates (PPRs) from Priseu (1995) were used to compare the average annual uptake of carbon at various lake depths with the available DIC At 5-8m depth, the annual uptake accounts for 0.43% of the DIC in Lake Hoare, and for 0.76% of the DIC in Lake Fryxell. These ratios are very similar, given that the PPR in Lake ...
TY - GEN. T1 - Biogeochemical interactions among the arsenic, iron, humic substances, and sulfate-reducing bacteria in mud volcanoes in southern Taiwan. AU - Liu, C. C.. AU - Maity, J. P.. AU - Jean, Jiin-Shuh. AU - Kar, S.. PY - 2010/12/1. Y1 - 2010/12/1. UR - http://www.scopus.com/inward/record.url?scp=84860828075&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=84860828075&partnerID=8YFLogxK. M3 - Conference contribution. AN - SCOPUS:84860828075. SN - 9780415578981. T3 - Arsenic in Geosphere and Human Diseases, As 2010 - 3rd International Congress: Arsenic in the Environment. SP - 134. EP - 136. BT - Arsenic in Geosphere and Human Diseases, As 2010 - 3rd International Congress. T2 - 3rd International Congress on Arsenic in the Environment, As 2010. Y2 - 17 May 2010 through 21 May 2010. ER - ...
Background: Desulfovibrio vulgaris Hildenborough is a sulfate-reducing bacterium (SRB) that is intensively studied in the context of metal corrosion and heavy-metal bioremediation, and SRB populations are commonly observed in pipe and subsurface environments as surface-associated populations. In order to elucidate physiological changes associated with biofilm growth at both the transcript and protein level, transcriptomic and proteomic analyses were done on mature biofilm cells and compared to both batch and reactor planktonic populations. The biofilms were cultivated with lactate and sulfate in a continuously fed biofilm reactor, and compared to both batch and reactor planktonic populations.Results: The functional genomic analysis demonstrated that biofilm cells were different compared to planktonic cells, and the majority of altered abundances for genes and proteins were annotated as hypothetical (unknown function), energy conservation, amino acid metabolism, and signal transduction. ...
Photic zone euxinia (PZE) has proven important for elucidating biogeochemical changes that occur during oceanic anoxic events, including mass extinction and conditions associated with unique fossil preservation. Organic geochemical analyses of a 380 Ma invertebrate fossil, which included well-preserved soft tissues, from the Gogo Formation (Canning Basin, Western Australia) showed biomarkers and stable isotopic values characteristic of PZE and a consortium of sulfate-reducing bacteria, which lead to exceptional fossil and biomarker preservation. The carbonate concretion contained phytoplankton, green sulfur bacteria (Chlorobi), and sulfate-reducing bacteria biomarkers with an increasing concentration toward the nucleus where the fossil is preserved. The spatial distribution of cholestane unequivocally associated with the fossilized tissue and its high relative abundance to the total steranes suggest that the fossil is a crustacean. The presence of an active sulfur cycle in this Devonian system, ...
Out of the many diverse anaerobic metabolisms out there, sulfate-reduction is one of the easiest to spot! The blackened sediments and lingering, rotten-egg smell often found in coastal areas are the result of sulfate-reducing microorganisms (SRM) respiring sulfate (SO42-) into sulfide (HS-). Sulfide is toxic and corrosive, and so across several industries (e.g. wastewater, oil & gas) there is a push to inhibit this microbial metabolism and limit sulfide production. When I started graduate school, the lab I joined had recently uncovered several potent and specific inhibitors of SRM. These compounds look like sulfate and trick SRM into using them just like sulfate, but cause a range of deleterious downstream effects that either slow down or stop sulfate reduction all together. I dove head-first into the study of perchlorate, my sulfate analog of choice. Over the next several years, we learned a lot about how model SRM are inhibited by perchlorate. We also learned that pure cultures of SRM can ...
The effect of zinc on the biotransformation of phosphogypsum, COD reduction and growth rate (µ max day -1 ) of an SRB community and Desulfotomaculum ruminis in media with sodium lactate or ethanol was examined. Depending on the form of zinc (Zn 3 (PO 4 ) 2 x 4H 2 O, ZnSO 4 x7H 2 O, ZnCl 2 ,...
[Amplicon sequencing dataset (MiSeq) of Archaea and Bacteria (16S ssu rRNA) in microbial mats at the floor of lake Fryxell (Antarctica).]
UltraZyme® reduces the general population of Sulphate-Reducing Bacteria (SRBs) in anaerobic systems and therefore, over time, alleviates and reduces odour issues. Cypher Environmental had developed this particular treatment plan with Eco-Infrastructure Solutions, who were trying to apply the product to open pit landfills in order to reduce any unwanted odours as well as reduce methane output as a result of decomposition. The unique cultures within UZP are selected for optimum enzyme and bacteria production, assuring efficient breakdown of proteins, carbohydrates and fats when UZP is applied to any treatment area. A proprietary micronutrient carrier provides accelerated germination and growth, while ... Read ...
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Les auteurs ont préparé avec une enzyme de la thiotaurine et de lhypotaurine marquées par le et S35ont démontré que ces deux composés peuvent échanger spontanément un atome de soufre en se...
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General Information: Pelobacter carbinolicus DSM 2380 was isolated from mud in Venice, Italy. Iron- and sulfur-reducing bacterium. Pelobacter carbinolicus is commonly isolated from marine and freshwater sediments, and sewage sludge. This organism can make up a significant portion of the anaerobic microbial community in these environments. Pelobacter carbinolicus is also able to grow using iron and sulfur as terminal electron acceptors. This organism is closely related to the sulfur-reducing Desulfuromonas spp. and iron-reducing Geobacter spp.. ...
Accepted name: glutaryl-CoA dehydrogenase (non-decarboxylating). Reaction: glutaryl-CoA + acceptor = (E)-glutaconyl-CoA + reduced acceptor. Glossary: (E)-glutaconyl-CoA = (2E)-4-carboxybut-2-enoyl-CoA. Other name(s): GDHDes; nondecarboxylating glutaryl-coenzyme A dehydrogenase; nondecarboxylating glutaconyl-coenzyme A-forming GDH. Systematic name: glutaryl-CoA:acceptor 2,3-oxidoreductase (non-decarboxylating). Comments: The enzyme contains FAD. The anaerobic, sulfate-reducing bacterium Desulfococcus multivorans contains two glutaryl-CoA dehydrogenases: a decarboxylating enzyme (EC 1.3.8.6), and a nondecarboxylating enzyme (this entry). The two enzymes cause different structural changes around the glutaconyl carboxylate group, primarily due to the presence of either a tyrosine or a valine residue, respectively, at the active site.. Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: References:. 1. Wischgoll, S., Taubert, M., Peters, F., Jehmlich, N., von Bergen, M. and ...
Transformation of inorganic mercury (Hg) to methyl mercury (MeHg) in peatlands is a key process in making boreal catchments a source of MeHg to freshwater ecosystems. Due to the importance of sulfur-reducing bacteria (SRB) for this process, past atmospheric deposition of sulfate (SO42-) may have increased net terrestrial Hg methylation. A long-term (14-year) factorial design field experiment was used to investigate the effect of enhanced SO42- deposition and raised temperature using a greenhouse (GH) treatment (air temperature similar to+4 degrees C; soil temperature 20 cm below mire surface similar to+2 degrees C) on sulfur (S) turnover, net Hg methylation, MeHg and total Hg concentrations in a boreal mire in northern Sweden. Of the SO42--S added during 14 years, 50% was retained in the plots without GH treatment while the combination of SO42- addition and GH treatment resulted in 15% S retention. The addition of SO42- (7-fold ambient SO42--deposition) increased (p , 0.05) the net Hg ...
Temperate mangrove and salt marsh sediments are a small methane and nitrous oxide source but important carbon store Journal Articles Refereed ...