1. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Rd., Qingdao 266101, China, Fax: +86‐532‐8066‐2778, http://english.qibebt.cas.cn/rh/rs/bic/aomd/
2. University of the Chinese Academy of Sciences, Beijing 100049, China