1. Department of Disease and Stress Biology (A.M.M., A.S., V.M.G., S.A.H.) and Bio-Imaging Facility (K.C.F.), John Innes Centre, Norwich NR4 7UH, United Kingdom; Department of Agroecology, Faculty of Science and Technology, Aarhus University, Slagelse DK–4200, Denmark (O.V.M., M.N.); Max Planck Institute for Plant Breeding Research, 50829 Cologne, Germany (R.T.)