Karrie A. Weber
Karrie Weber
Assistant Professor

Ph.D. The University of Alabama, 2002
        (Biological Sciences)
B.S. Texas A&M University, 1995
        (Wildlife & Fisheries Science)
Contact Information
232 Manter Hall


Research Interests

Environmental microorganisms are recognized to enzymatically mediate biogeochemical cycles in marine and terrestrial aquatic and soil/sedimentary environments, thereby shaping our environment. The fate and transport of inorganic and organic natural and contaminant compounds can be directly or indirectly regulated by microbial metabolism(s). My research interests focus on the intricate interactions between microorganisms (including viruses) and the environment at the molecular scale, the ecosystem scale, and ultimately, the global scale. I have applied and will continue using an interdisciplinary approach in order to link the microbial community to biogeochemical function combining environmental microbiology, microbial physiology, molecular biology, microbial ecology, geomicrobiology, virology, and biogeochemistry.

Current Projects:

  • Microbially-Catalyzed Mineral Dissolution and Precipitation: Implications to Heavy Metal and Radionuclide Mobility
  • Geo-virology: Microbially-Mediated Nitrate and Metal Reduction Influenced by Bacteriophage Infection
  • Microbially-Mediated Coupled Biogeochemical Reactions: Nitrification and Nirate-dependent Metal Oxidation
  • Role of Metals in the Nitrogen Cycle


Selected Publications:

  1. Byrne-Bailey, K. G.*, K. A. Weber*, A. H. Chair, S. Bose, T. K. Knox, T. Spanbauer, O. Chertkov, and John D. Coates. Completed genome sequence of the iron oxidizing bacterium Acidovorax ebreus strain TPSY. J. Bact. (in press) *These authors contributed equally to this work and have been placed in alphabetical order.
  2. Sun, Y., R. L. Gustavson, N. Ali, K. A. Weber, L. L. Westphal, and J. D. Coates. 2009. Behavioral response of dissimilatory perchlorate reducing bacteria to different electron acceptors. Appl. Microbiol. Biotechnol. 83: 555-565.
  3. Weber, K. A., D. B. Hedrick, A. D. Peacock, J. C. Thrash, D. C. White, L. A. Achenbach, J. D. Coates. 2009. Physiological and taxonomic description of the novel autotrophic, metal oxidizing bacterium, Pseudogulbenkiania sp. strain 2002. Appl. Microbiol. Biotechnol. 83:555–565.
  4. Wrighton, K. C., P. Agbo, F. Warnecke, K. A. Weber, E. L. Brodie, T. Z. DeSantis, P. Hugenholtz, G. L. Andersen, J. D. Coates. 2008. A Novel Ecological Role of the Firmicutes Identified in Thermophilic Fuel Cells. ISME J. 2, 1146–1156.
  5. Pollock, J., K. A. Weber, J. Lack, L. A. Achenbach, M. Mormile, and J. D. Coates. 2007. Alkaline iron(III) reduction by a novel alkaliphilic, halotolerant, Bacillus sp. isolated from salt flat sediments of Soap Lake. Appl. Microbiol. Biotechnol. 77, 927-934.
  6. Thrash, J. C., J. I. Van Trump, K. A. Weber, E. Miller, L. A. Achenbach. J. D. Coates. 2007. Electrochemical stimulation of microbial perchlorate reduction. Environ. Sci. Technol. 41, 1740-1746. 
  7. Weber, K. A., L. A. Achenbach, and J. D. Coates. 2006. Microbes Pumping Iron: Anaerobic Microbial Iron Oxidation and Reduction. Nat. Rev. Microbiol. 4, 752-764. 
  8. Weber, K.A., J. L. Pollock, K.A. Cole, L.A. Achenbach, J.D. Coates. 2006. Nitrate-Dependent Fe(II) Oxidation by a Novel, Lithoautotrophic, Betaproteobacterium, Strain 2002. Appl. Environ. Microbiol. 72(1) 686-694.
  9. Weber, K. A., M.M. Urrutia, P. F. Churchill, R. K. Kukkadapu, and E. E. Roden. 2006. Anaerobic Redox Cycling of Iron by Freshwater Sediment Microorganisms. Environ. Microbiol. 8(1), 100-113.
  10. Weber, K. A., F. W. Picardal, E. E. Roden. 2001. Microbially Catalyzed Nitrate-Dependent Oxidation of Biogenic Solid-Phase Fe(II) Compounds. Environ. Sci. Technol. 35(8), 1644-1650.