1. Institute of Microbiology, PO Box 61, Beijing Forestry University, Beijing 100083, People’s Republic of China
2. Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, CZ-370 05 České Budějovice, Czech Republic
3. Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, People’s Republic of China