1. Department of Regulation Biology, National Institute for Basic Biology, Okazaki 444–8585, Japan (A.F., L.M., R.S., I.S., N.M.);
2. Department of Molecular Biomechanics, School of Life Science, The Graduate School for Advanced Studies, Okazaki 444–8585, Japan (A.F., I.S., N.M.);
3. Biological Research Center of the Hungarian Academy of Sciences, Szeged, Hungary (L.M.); and
4. Universität Rostock, FB Biowissenschaften, Pflanzenphysiologie, Albert Einsteinstrasse 3a, 18051 Rostock, Germany (K.M., M.H.).