1. Institute for Environmental Genomics, University of Oklahoma, Norman, Oklahoma, USA
2. Department of Microbiology and Plant Biology, University of Oklahoma, Norman, Oklahoma, USA
3. Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, California, USA
4. Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
5. Department of Plant and Microbial Biology, University of California, Berkeley, California, USA
6. Department of Bioengineering, University of California, Berkeley, California, USA
7. School of Civil Engineering and Environmental Sciences, University of Oklahoma, Norman, Oklahoma, USA