1. Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
2. University of Potsdam, Institute of Biochemistry and Biology, 14476 Potsdam-Golm, Germany
3. Center of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
4. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Czech Academy of Sciences, 78371 Olomouc, Czech Republic
5. CSIRO Plant Industry, St. Lucia QLD 4067, Australia