1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China
2. Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
3. Institute of Microbiology, Jiangxi Academy of Sciences, Nanchang 330012, China
4. School of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, P.R.China