Chengshu Wang1, Ling Lu2, Wen-Bing Yin3, Ke-Qin Zhang4. 1. Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China. Electronic address: cswang@sibs.ac.cn. 2. Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China. Electronic address: linglu@njnu.edu.cn. 3. State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China. Electronic address: yinwb@im.ac.cn. 4. Laboratory for Conservation and Utilization of Bio-Resources, and the Key Laboratory for Southwest Microbial Diversity of the Ministry of Education, Yunnan University, Kunming, Yunnan 650091, China. Electronic address: kqzhang@ynu.edu.cn.