1. Institute for Environmental Genomics and Department of Botany and Microbiology, University of Oklahoma, Norman, Oklahoma 73019
2. Jiangsu Polytechnic University, Jiangsu 213164, China
3. Virtual Institute for Microbial Stress and Survival
4. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China
5. Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720