1. State Key Laboratory of Grassland Agro-ecosystems; Engineering Research Center of Grassland Industry, Ministry of Education; Gansu Tech Innovation Centre of Western China Grassland Industry; Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University; Lanzhou 730000, China
2. Institute of Biotechnology and Germplasm Resources, Yunnan Academy of Agricultural Sciences, Kunming 650223, China
3. Department of Plant Biology, Rutgers University, New Brunswick, NJ 08901, U.S.A.