1. Institute of Plant Molecular Biology and Agricultural Biotechnology, State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong, Shatin, New Territories 852, Hong Kong (Y.C., M.H., Y.S., B.-C.T.);
2. Key Laboratory of Plant Cell Engineering and Germplasm Innovation, Ministry of Education, School of Life Sciences, Shandong University, Jinan, Shandong 250100, People’s Republic of China (M.H., B.-C.T.);
3. Horticultural Sciences Department, University of Florida, Gainesville, Florida 32611 (L.L., S.W., D.R.M.); and
4. Experimental Plant Division, RIKEN BioResource Center, Tsukuba, Ibaraki 305–0074, Japan (K.I., M.K.)