1. Institute for Advanced Study Chengdu University Chengdu China
2. State Key Laboratory of Grassland and Agro‐Ecosystems School of Life SciencesLanzhou University Lanzhou Gansu China
3. Teachers Training School Baiyin Gansu China
4. Key Laboratory for Bio‐Resources and Eco‐Environment College of Life SciencesSichuan University Chengdu China
5. Department of Environmental Science, Policy, and Management University of California Berkeley CA USA
6. Plant Biology Section School of Integrative Plant Science Cornell University Ithaca NY USA