1. Key Laboratory of Horticultural Plant Biology (Ministry of Education), Key Laboratory of Horticultural Crop Biology and Genetic Improvement (Central Region, Ministry of Agriculture), College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, P.R. China
2. Department of Plant Sciences, Laboratory of Molecular Biology, Wageningen University, Droevendaalsesteeg, PB Wageningen, Netherlands
3. Institute for Bioscience and Biotechnology Research & Department of Plant Sciences and Landscape Architecture, University of Maryland College Park, Rockville, MD, USA