1. Plant Biomechanics Group and Botanic Garden, Faculty of Biology University of Freiburg Schänzlestraße 1 79104 Freiburg Germany
2. Institut Charles Sadron, CNRS UPR022 University of Strasbourg 23 rue du Loess, BP 84047 Strasbourg Cedex 2 67034 France
3. Cluster of Excellence livMatS@FIT, Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT) University of Freiburg Georges‐Kohler‐Allee 105 Freiburg 79110 Germany
4. Laboratoire ICube, CNRS UMR 7357 University of Strasbourg 72 route du Rhin, BP 315, Illkirch Cedex Strasbourg 67411 France