Isotopic behaviour of sulphate oxygen in the bacterial reduction of sulphate

Mizutani, Yoshihiko; Rafter, T.A.

doi:10.2343/geochemj.6.183

Cited by 183 publications

(106 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8), which is close to the value of -3 per mil determined for the fractionation of S accompanying uptake of SO 4 in dissimilatory sulfate reduction by Desulfovibrio desulfuricans (Rees, 1973). During bacterial sulfate reduction, oxygen in SO 4 undergoes kinetic fractionation similar to sulfur, but of lower magnitude (Mitzutani and Rafter, 1973;Fritz and others, 1989).…”

mentioning

confidence: 63%

See 1 more Smart Citation

Biogeochemical cycling of phosphorus: Insights from oxygen isotope effects of phosphoenzymes

Blake

O’Neil²,

Surkov³

2005

American Journal of Science

204

252

View full text Add to dashboard Cite

ABSTRACT. Geochemical cycling of phosphorus (P) in aquatic environments is carried out almost exclusively by biota and involves reactions that are catalyzed by enzymes. Oxygen isotope effects accompanying phosphoenzymatic reactions have been determined in controlled laboratory experiments in order to elucidate processes underlying biogeochemical cycling of P, and to identify possible reaction pathways for P-compounds in nature. Phosphate oxygen isotope effects are distinct for specific enzymatic reaction mechanisms measured in microbial culture experiments and in cell-free systems. P 16 O 4 is taken up preferentially from inorganic phosphate (P i ) in the growth medium by intact E. coli cells, producing a kinetic fractionation in the extracellular dissolved P i pool. Inorganic pyrophosphatase is the intracellular enzyme that catalyzes the temperature-dependent equilibrium oxygen isotope fractionations between phosphates and water in biological systems, and imprints an equilibrium isotope signature on P i that is turned over or cycled by intact cells. Alkaline phosphatase, a key enzyme involved in extracellular P i regeneration in aquatic systems, catalyzes hydrolysis of phosphomonoesters, reactions that are accompanied by kinetic fractionations and disequilibrium (inheritance) isotope effects in released P i . Comparison of laboratory determined enzyme-specific isotopic fractionations with those observed in microbial culture experiments and in natural aquatic systems, provide new insights into processes controlling P cycling and the relations between P availability and the cycling of N and C. Isotopic signatures associated with specific cellular processes and phosphoenzyme reaction pathways may be useful in assessing P status and for tracing P turnover. Definition of Symbols and Abbreviations

show abstract

mentioning

confidence: 63%

“…The PO 4 -water oxygen isotope fractionation factor can be estimated by assuming a closed system and using a simplified Rayleigh equation (for example, Rayleigh, 1896;Mitzutani and Rafter, 1973;Goldhaber and Kaplan, 1974;Aharon and Fu, 2000) to model the data:…”

mentioning

confidence: 99%

Biogeochemical cycling of phosphorus: Insights from oxygen isotope effects of phosphoenzymes

Blake

O’Neil²,

Surkov³

2005

American Journal of Science

204

252

View full text Add to dashboard Cite

show abstract

“…Under such reducing conditions, dissolved sulfate can be reduced probably by anaerobic bacteria. Bacterial reduction of sulfate is mostly accompanied by the enrichment of heavier isotopes in the re maining sulfate (Mizutani and Rafter, 1973), to which isotopic enrichment observed for sulfate in zone III and IVa waters relative to that in zone II water may be ascribed.…”

Section: Of Isotonc Ratiosmentioning

confidence: 99%

Origin of thermal waters from the Hakone geothermal system, Japan.

et al. 1985

View full text Add to dashboard Cite

8180SO4 and 534SS04 analyses indicate that surface oxidation of volcanic sulfur produces isotopically light sulfate in water occurring at relatively high elevations. Sulfate minerals in the basement rocks formed by the Miocene submarine volcanism are another source of dissolved sulfate in waters at lower elevations. C02 originally derived from decomposition of marine carbonate is suggested as a carbon source for dis solved bicarbonate at higher elevations, although contribution of organic carbon becomes significant in waters at lower elevations.In a 5D versus 8180 plot, surface waters including precipitation and ground water lie on the line, 6D = 88180 + 17. On the other hand, thermal waters lie on a regression line, SD=2.16180-33.5. Around the intersect of the two lines, S D = -51 %o and 8 180 = -8.5 %o, there is a swarm of point for groundwaters. We call the ground water with 8 D = -51 %o and 8180 = -8.5 %o "representative" groundwater (RGW). From both chemical and isotopic view points, thermal waters are interpreted to be a mixture of RGW and high temperature dense steam (HTDS), the latter being ultimately evolved from hydrothermal interaction of RGW with rocks containing appreciable amounts of hydrous silicates.Values of 5D and 8180 for HTDS have been interpreted to be a result of rock-RGW interaction with the rock/water weight ratio of about 10, on the basis of isotopic material balance in a closed system with the use of SD of hydrous silicates in rocks as well as 8D and 8180 values of RGW. When the ratio of about 10 is compared with those of other geothermal areas, the Hakone geothermal system is rock-dominated. Interaction between meteoric water and rocks including hydrous silicates under a rock-dominated con dition can account for both hydrogen and oxygen isotopic shifts found in thermal waters.

show abstract

“…Coupled isotope fractionations of both sulfur and oxygen isotopes have been investigated in experiments (Mizutani and Rafter 1973;Böttcher et al 2001) and in naturally occurring sediments and aquifers (Fritz et al 1989;Böttcher et al 1989;Ku et al 1999 …”

Section: Dissimilatory Sulfate Reductionmentioning

confidence: 99%

Isotope Fractionation Processes of Selected Elements

Hoefs

2015

Stable Isotope Geochemistry

View full text Add to dashboard Cite

Isotopic behaviour of sulphate oxygen in the bacterial reduction of sulphate

Cited by 183 publications

References 4 publications

Biogeochemical cycling of phosphorus: Insights from oxygen isotope effects of phosphoenzymes

Biogeochemical cycling of phosphorus: Insights from oxygen isotope effects of phosphoenzymes

Origin of thermal waters from the Hakone geothermal system, Japan.

Isotope Fractionation Processes of Selected Elements

Contact Info

Product

Resources

About