1. Department of Microbiology and Immunology, Life Sciences Institute, Health Sciences Mall, The University of British Columbia, Vancouver, British Columbia, Canada
2. Center for Environmental Biotechnology, University of Tennessee, Knoxville, Tennessee, USA
3. Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, Tennessee, USA
4. Department of Microbiology, University of Tennessee, Knoxville, Tennessee, USA
5. Department of Biosystems Engineering & Soil Science, University of Tennessee, Knoxville, Tennessee, USA
6. Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA