1. College of Horticulture, Gansu Agricultural University, 1 Yinmen Village, Anning District, Lanzhou 730070, China
2. Department of Biology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
3. Department of Stress, Development and Signaling in Plants, Spanish National Research Council, CSIC, 18008 Granada, Spain