Publications
- S. Roth, B. Poulin, Z. Baumann, X. Liu, L. Zhang, D. Krabbenhoft, M. E. Hines, J. K. Schaefer, T. Barkay. 2021. Nutrient inputs stimulate mercury methylation by syntrophs in a subarctic peatland. Frontiers of Microbiology. 12: 741523. https://doi.org/10.3389/fmicb.2021.741523
- J. L. Wilmoth, J. K. Schaefer, D. R. Schlesinger, S. Roth, P. G. Hatcher, J. K. Shoemaker, X. Zhang. 2021. The role of oxygen in stimulating methane production in wetlands. Global Change Biology. 27: 5831 - 5847. onlinelibrary.wiley.com/doi/full/10.1111/gcb.15831
- J. Goff, J. K. Schaefer, and N. Yee. 2021. Extracellular sulfite is protective against reactive oxygen species and antibiotic stress in Shewanella oneidensis MR-1. Environ. Microbiol. Rep. 13: 394-400, doi: 10.1111/1758-2229.12947.
- J. K. Schaefer, J. K., R. M. Kronberg, E. Björn, U. Skyllberg. 2020. Anaerobic guilds responsible for mercury methylation in boreal wetlands of varied trophic status serving as either a methylmercury source or sink. Environ. Microbiol. doi.org/10.1111/1462-2920.15134
- Y. Wang, S. E. Janssen, J. K. Schaefer, N. Yee, and J. R. Reinfelder. 2020. Tracing the uptake of Hg(II) in an iron-reducing bacterium using mercury stable isotopes. Environ. Sci. Technol. Lett. doi.org/10.1021/acs.estlett.0c00409.
- G. A. Adediran, V Liem-Nguyen, Y. Song, J. K. Schaefer, U. Skyllberg, E. Björn. Microbial biosynthesis of thiol compounds: implications for speciation, cellular uptake and methylation of Hg(II). Environ. Sci. Technol. In Press. doi.org/10.1021/acs.est.9b01502.
- B. A. Poulin, J. N. Ryan, M. T Tate, D. P. Krabbenhoft, M. E. Hines, T. Barkay, J. K. Schaefer, G. R. Aiken. 2019. Geochemical factors controlling dissolved elemental mercury and methylmercury formation in Alaskan wetlands of varying trophic status. Environ. Sci. Technol. 53:6203-6213, doi: 10.1021/acs.est.8b06041.
- J. Xu, M. Buck, K. Eklöf, O. Osman, J. K. Schaefer, K. Bishop, E. Björn, U. Skyllberg, S. Bertilsson, A. G. Bravo. 2019. Mercury methylating microbial communities of boreal forest soils. Sci. Reports. 9:518. doi: 10.1038/s41598-018-37383-z.
- Y. Wang, J. K. Schaefer, B. Mishra, and N. Yee. 2018. Adsoprtion of methylmercury onto Geobacter bemidjiensis Bem. Environ. Sci. Technol. 52(20):11564-11572. doi: 10.1021/acs.est.8b01987
- A. G. Bravo, S. Peura, M. Buck, O. Ahmed, A. Mateos-Rivera. S. Herrero Ortega, J. K. Schaefer, S. Bouchet, E. Björn, and S. Bertilsson. 2018. Methanogens and iron-reducing bacteria: the overlooked members of mercury methylating microbial communities in boreal lakes. Appl. Environ. Microbiol. 84: e01774-18. doi: 10.1128/AEM.01774-18.
- R.-M. Kronberg, J. K. Schaefer, E. Björn, and U. Skyllberg. 2018. Mechanisms of methyl mercury net degradation in alder swamps: the role of methanogens and abiotic processes. Environ. Sci. Technol. Lett. 5(4): 220-225. doi:10.1021/acs.estlett.8b00081
- A. G. Bravo, J. Zopfi, M. Buck, J. Xu, S. Bertilsson, J. K. Schaefer, J. Poté, and C. Cosio. 2018. Geobacteraceae are important members of mercury-methylating microbial communities of sediments impacted by waste water releases. ISME J., doi:10.1038/s41396-017-0007-7
- S. Jonsson, A. Andersson, M. B. Nilsson, U. Skyllberg, E. Lundberg, J. K. Schaefer, S. Åkerblom, and E. Björn. 2017. Terrestrial discharges mediate trophic shifts and enhance methylmercury accumulation in estuarine biota. Sci. Adv. 3:e1601239. DOI: 10.1126/sciadv.1601239
- Y. Wang, J. K. Schaefer, B. Mishra, and N. Yee. 2016. Intracellular Hg(0) oxidation in Desulfovibrio desulfuricans ND132. Environ. Sci. Technol. 50:11049-11056. DOI: 10.1021/acs.est.6b03299
- S. E. Janssen, J. K. Schaefer, J. D. Blum, T. Barkay, and J. R. Reinfelder. 2016. Fractionation of mercury stable isotopes during microbial methylmercury production in iron- and sulfate-reducing bacteria. Environ. Sci. Technol. 50:8077-8083. DOI: 10.1021/acs.est.6b00854
- J. K. Schaefer. 2016. Better living through mercury. News & Views. Nat. Geosciences. 9: 94-95.
- A. Szczuka, F. M. M. Morel, and J. K. Schaefer. 2015. The effect of thiols, zinc, and redox conditions on Hg uptake in Shewanella oneidensis. Environ. Sci. Technol. 49: 7432-7438. DOI: 10.1021/acs.est.5b00676
- J. K. Schaefer, A. Szczuka, and F. M. M. Morel. 2014. Effect of divalent metals on Hg(II) uptake and methylation by bacteria. Environ. Sci. Technol. 48: 3007-3013. DOI: 10.1021/es405215v
- J. K. Schaefer, R.-M. Kronberg, F. M. M. Morel, U. Skyllberg. 2014. Detection of a key Hg methylation gene, hgcA, in wetland soil. Environ. Microbiol. Rep. 6: 441-447. DOI: 10.1111/1758-2229.12136
- J. K. Schaefer, S. S. Rocks, W. Zheng, L. Liang, B. Gu, and F. M. M. Morel. 2011. Active transport, substrate specificity, and methylation of Hg(II) in anaerobic bacteria. Proc. Nat. Acad. Sci. 108: 8714-8719. DOI: 10.1073/pnas.1105781108
- E. G. Malcolm, J. K. Schaefer, E. B. Ekstrom, C. B. Tuit, A. Jayakumar, H. Park, B. B. Ward, and F. M. M. Morel. 2010. Mercury methylation in oxygen deficient zones of the oceans: no evidence for the predominance of anaerobes. Mar. Chem. 122: 11-19. DOI: 10.1016/j.marchem.2010.08.004
- J. K. Schaefer, and F. M. M. Morel. 2009. High methylation rates of mercury bound to cysteine by Geobacter sulfurreducens. Nature Geosci. 2: 123-126. DOI: 10.1038/ngeo412
- T. Cardona-Marek, J. K. Schaefer, K. Ellickson, T. Barkay, J. R. Reinfelder. 2007. Mercury speciation, reactivity, and bioavailability in a highly contaminated estuary, Berry’s Creek, New Jersey Meadowlands. Environ. Sci. Technol. 41: 8268-8274. DOI: 10.1021/es070945h
- S. M. Ní Chadhain*, J. K. Schaefer*, S. Hicks, G. J. Zylstra, and T. Barkay. 2006. Analysis of mercuric reductase (merA) gene diversity in an anaerobic mercury-contaminated sediment enrichment. Environ. Microbiol. 8: 1746-1752. DOI: 10.1111/j.1462-2920.2006.01114.x
- J. K. Schaefer, J. Yagi, J. Reinfelder, T. Cardona, K. M. Ellickson, S. Tel-Or, T. Barkay. 2004. The role of the bacterial organomercury lyase (MerB) in controlling methylmercury accumulation in mercury contaminated natural waters. Environ. Sci. Technol. 38: 4304-4311. DOI: 10.1021/es049895w
- J. K. Schaefer, J. Letowski, and T. Barkay. 2002. mer-mediated resistance and volatilization of Hg(II) under anaerobic conditions. Geomicrobiol. J. 19: 87-102.
- J. K. Schaefer, K. D. Goodwin, I. R. McDonald, J. C. Murrell, R. S. Oremland. 2002. Leisingera methylohalidivorans, gen. nov., sp. nov., a marine methylotroph that grows on methyl bromide. Int. J. Syst. Evol. Microbiol. 52: 851-859. DOI: 10.1099/ijs.0.01960-0
- T. Barkay and J. Schaefer. 2001. Metal and radionucleotide bioremediation: issues, considerations and potentials. Curr. Opin. Microbiol. 4: 318 – 323.
- R. S. Oremland, P. R. Dowdle, S. Hoeft, J. P. Sharp, J. K. Schaefer, L. G. Miller, J. S. Blum, R. L. Smith, N. S. Bloom, D. Wallschlaeger. 2000. Bacterial Dissimilatory Reduction of Arsenate and Sulfate in Meromictic Mono Lake, California. Geochimica et Cosmochimica Acta 64: 3073-3084.
- J. K. Schaefer and R. S. Oremland. 1999. Oxidation of methyl halides by the facultative methylotroph Strain IMB-1. Appl. Environ. Microbiol. 65: 5035-5041.
- K. D. Goodwin, J. K. Schaefer, and R. S. Oremland. 1998. Bacterial oxidation of dibromomethane and methyl bromide in natural waters and enrichment cultures. Appl. Environ. Microbiol. 64: 4629-4636.
- A. Laverman, J. S. Blum, J. K. Schaefer, E. J. Philips, D. R. Lovley, and R. S. Oremland. 1995. Growth of Strain SES-3 with arsenate and other diverse electron acceptors. Appl. Environ. Microbiol. 61: 3556-3561.