Instituto Multidisciplinario de Biología Vegetal, University of Freiburg - Institute of Biology II, University of Bonn - Department of Molecular Plant Physiology, Philipps-Universität Marburg - Division of Naturschutz, Institute of Experimental Botany ASCR - Laboratory of Growth Regulators, University of Freiburg - Institute of Biology II, University of Tübingen - Zentrum für Molekularbiologie der Pflanzen, University of Freiburg - Institute of Biology II, University of Freiburg - Institute of Biology II, University of Freiburg - Institute of Biology II, University of Freiburg - Institute of Biology II, Institute of Experimental Botany ASCR - Laboratory of Growth Regulators, University of Freiburg - Institute of Physiology II, University of Freiburg - Institute of Biology II, Instituto Multidisciplinario de Biología Vegetal and University of Freiburg - Institute of Biology II