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Sulfide-induced dissimilatory nitrate reduction to ammonia in anaerobic freshwater sediments
Open accessAbstract
Different reduced sulfur compounds (H2S, FeS, S2O32−) were tested as electron donors for dissimilatory nitrate reduction in nitrate-amended sediment slurries. Only in the free sulfide-enriched slurries was nitrate appreciably reduced to ammonia (), with concomitant oxidation of sulfide to S0 (). The initial concentration of free sulfide appears as a factor determining the type of nitrate reduction. At extremely low concentrations of free S2− (metal sulfides) nitrate was reduced via denitrification whereas at higher S2− concentrations, dissimilatory nitrate reduction to ammonia (DNRA) and incomplete denitrification to gaseous nitrogen oxides took place. Sulfide inhibition of NO- and N2O- reductases is proposed as being responsible for the driving part of the electron flow from S2− to NH4+.
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Citations
Cited by
Burgin, A. J., & Hamilton, S. K. (2007) · Frontiers in Ecology and the Environment · doi:10.1890/1540-9295(2007)5[89:hwotro]2.0.co;2 · Cited by 1,112
Lipsewers, Y. A., Hopmans, E. C., Meysman, F. J. R., Sinninghe Damsté, J. S., & Villanueva, L. (2016) · Frontiers in Microbiology · doi:10.3389/fmicb.2016.01661 · Cited by 937
Rütting, T., Boeckx, P., Müller, C., & Klemedtsson, L. (2011) · Biogeosciences · doi:10.5194/bg-8-1779-2011 · Cited by 503
DNRA: A short-circuit in biological N-cycling to conserve nitrogen in terrestrial ecosystems
Pandey, C. B., Kumar, U., Kaviraj, M., Minick, K. J., Mishra, A. K., & Singh, J. S. (2020) · Science of The Total Environment · doi:10.1016/j.scitotenv.2020.139710 · Cited by 429
The cycle of nitrogen in river systems: sources, transformation, and flux
Xia, X., Zhang, S., Li, S., Zhang, L., Wang, G., Zhang, L., Wang, J., & Li, Z. (2018) · Environmental Science: Processes & Impacts · doi:10.1039/c8em00042e · Cited by 258
Metadata
- Authors
- Brunet, R., & Garcia-Gil, L. J.
- Venue
- FEMS Microbiology Ecology
- Publisher
- Oxford University Press
- Published
- 1996-10-01
- Volume
- 21
- Issue
- 2
- Pages
- 131-138
- ISSN
- 0168-6496 (ISSN-L)
- OpenAlex
- W2040154656
- Cited by
- 416
- References
- 0
- FWCI
- 1.39
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Brunet, R., & Garcia-Gil, L. J. (1996). Sulfide-induced dissimilatory nitrate reduction to ammonia in anaerobic freshwater sediments. FEMS Microbiology Ecology. https://doi.org/10.1016/0168-6496(96)00051-7
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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