1. Leibniz Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) Gatersleben Corrensstrasse 3 Stadt Seeland 06466 Germany
2. ARC Centre of Excellence in Plant Cell Walls School of Botany University of Melbourne Parkville Vic. 3010 Australia
3. Department of Plant Cell Biology Albrecht‐von‐Haller‐Institute Georg‐August‐University Göttingen Julia‐Lermontowa‐Weg 3 Göttingen D‐37077 Germany
4. Plant Sciences Wageningen University PO Box 386 Wageningen 6700AJ the Netherlands
5. ARC Centre of Excellence in Plant Cell Walls School of Agriculture, Food and Wine University of Adelaide Waite Campus Glen Osmond SA 5064 Australia
6. Division of Glycocience School of Biotechnology Royal Institute of Technology (KTH) AlbaNova University Center Stockholm SE‐106 91 Sweden