1. Yan Zhang, ORCID: 0000-0002-3771-095X. 2. Ph.D. candidate of Philosophy, Environmental microbiology, School of Biological Sciences, Universiti Sains Malaysia. 3. Master of Science, Computational Mathematics, College of Mathematics and Information Science, Shaanxi Normal University, 4. Bachelor of Science, Mathematics and Applied Mathematics, College of Mathematics and Information Science, Shaanxi Normal University. 5. Work experience: Xi’an University.2003-new 6. REPRESENTATIVE PUBLICATIONS. XU Ling-Ling*, ZHANG Yan, ZHAO Ming-Yang, LI Xiao-Xiao, NAN Meng-Yue, MENG Fan-Ju. Effects of mycorrhizal fungi on seed germination and seedling rooting of Bletilla striata. Mycosystema, 2019, 38(09): 1440-1449. XU Ling-Ling*, ZHANG Yan, ZHOU Min, LI Jing, GAO Li-Jun. Diversity and ecological function of root–associated fungi in three Cypripedium species. Microbiology China, 2019, 46(9): 2134-2145. XU Ling-Ling*, ZHANG Yan, XU Jing. Tulasnellaceae associated with orchids: taxonomy, diversity, specificity and plasticity. Mycosystema, 2019, 38(3): 291-312. XU Ling-Ling*, ZHAO Ming-Yang, LI Jing, LI Shu-Qi, GAO Li-Jun, ZHANG Yan, XU Jing. Correlation between vertical distribution of three Cypripedium species and composition of orchid mycorrhizal fungal community. Mycosystema, 2019(06): 811-821.