1. Center for Modeling and Simulation in the Biosciences and Interdisciplinary Center for Scientific Computing, University of Heidelberg, 69120 Heidelberg, Germany
2. Virtual Plants Inria Team, Université Montpellier 2, 34095 Montpellier cedex 5, France
3. Centre for Mathematical Medicine and Biology, School of Mathematical Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
4. Centre for Plant Integrative Biology, University of Nottingham, Sutton Bonington LE12 5RD, United Kingdom
5. Laboratoire de Reproduction et Développement des Plantes, Centre National de la Recherche Scientifique, Institut National de la Recherche Agronomique, Ecole Normale Supérieure de Lyon, Université Lyon I, Université de Lyon, 69364 Lyon cedex 07, France