Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany (M.S., R.S.); Laboratories of Genetics and Plant Physiology, Wageningen University, NL–6708 PB Wageningen, The Netherlands (J.K.); and Centre for Biosystems Genomics, NL–6708 PB Wageningen, The Netherlands (J.K.) (At 2009-12-11)