The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Mercury Methylation from Unexpected Sources: Molybdate-Inhibited Freshwater Sediments and an Iron-Reducing Bacterium
Open accessAbstract
Methylmercury has been thought to be produced predominantly by sulfate-reducing bacteria in anoxic sediments. Here we show that in circumneutral pH sediments (Clear Lake, CA) application of a specific inhibitor of sulfate-reducing bacteria at appropriate concentrations typically inhibited less than one-half of all anaerobic methylation of added divalent mercury. This suggests that one or more additional groups of microbes are active methylators in these sediments impacted by a nearby abandoned mercury mine. From Clear Lake sediments, we isolated the iron-reducing bacterium Geobacter sp. strain CLFeRB, which can methylate mercury at a rate comparable to Desulfobulbus propionicus strain 1pr3, a sulfate-reducing bacterium known to be an active methylator. This is the first time that an iron-reducing bacterium has been shown to methylate mercury at environmentally significant rates. We suggest that mercury methylation by iron-reducing bacteria represents a previously unidentified and potentially significant source of this environmental toxin in iron-rich freshwater sediments.
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Cites
Dissimilatory Fe(III) and Mn(IV) Reduction
Lovley, D. R., Holmes, D. E., & Nevin, K. P. (2004) · Advances in Microbial Physiology · doi:10.1016/s0065-2911(04)49005-5 · Cited by 1,471
Sulfate stimulation of mercury methylation in freshwater sediments
Gilmour, C. C., Henry, E. A., & Mitchell, R. (1992) · Environmental Science & Technology · doi:10.1021/es00035a029 · Cited by 1,124
Cited by
The Genetic Basis for Bacterial Mercury Methylation
Parks, J. M., Johs, A., Podar, M., Bridou, R., Hurt, R. A., Smith, S. D., Tomanicek, S. J., Qian, Y., Brown, S. D., Brandt, C. C., et al. (2013) · Science · doi:10.1126/science.1230667 · Cited by 965
Mercury Methylation by Novel Microorganisms from New Environments
Gilmour, C. C., Podar, M., Bullock, A. L., Graham, A. M., Brown, S. D., Somenahally, A. C., Johs, A., Hurt, R. A., Bailey, K. L., & Elias, D. A. (2013) · Environmental Science & Technology · doi:10.1021/es403075t · Cited by 734
Methanogens: Principal Methylators of Mercury in Lake Periphyton
Hamelin, S., Amyot, M., Barkay, T., Wang, Y., & Planas, D. (2011) · Environmental Science & Technology · doi:10.1021/es2010072 · Cited by 308
Geochemistry of Mercury in the Environment
Fitzgerald, W. F., & Lamborg, C. H. (2014) · Treatise on Geochemistry · doi:10.1016/b978-0-08-095975-7.00904-9 · Cited by 275
Metadata
- Authors
- Fleming, E. J., Mack, E. E., Green, P. G., & Nelson, D. C.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2006-01
- Volume
- 72
- Issue
- 1
- Pages
- 457-464
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2018727681
- Cited by
- 601
- References
- 2
- FWCI
- 14.95
- Type
- journal article
- Language
- en
- Open access
- green
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- Fleming, E. J., Mack, E. E., Green, P. G., & Nelson, D. C. (2006). Mercury Methylation from Unexpected Sources: Molybdate-Inhibited Freshwater Sediments and an Iron-Reducing Bacterium. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.72.1.457-464.2006
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