1. Institut Charles Sadron, CNRS UPR022, Université de Strasbourg, Strasbourg, France
2. Plant Biomechanics Group and Botanic Garden, University of Freiburg, Freiburg, Germany
3. FIT, Freiburg Center for Interactive Materials and Bioinspired Technologies, Freiburg, Germany
4. FMF, Freiburg Materials Research Center, Freiburg, Germany
5. Basell Deutschland GmbH, LyondellBasell Industries, Frankfurt a.M, Germany
6. Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, CA, USA
7. ICube, UMR7357, Université de Strasbourg, Strasbourg, France