1. Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 400044, China
2. Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
3. Department of Plant Sciences, University of California, Davis, California 95616
4. College of Agriculture, Guangxi University, Nanning 530004, China