1. Institute of Biology II University of Freiburg 79104 Freiburg Germany
2. Institute of Computer Science University of Freiburg 79110 Freiburg Germany
3. BIOSS Centre for Biological Signalling Studies University of Freiburg 79104 Freiburg Germany
4. Centre for Biological Systems Analysis (ZBSA) University of Freiburg 79104 Freiburg Germany
5. Department of Molecular Mechanisms of Phenotypic Plasticity Institut de Biologie Moléculaire des Plantes Rue du Général Zimmer 12 67084 Strasbourg France