1. Université de Lille CNRS, UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, F 59000 Lille, France.
2. Department of Ecology, Evolution and Natural Resources, Rutgers University, New Brunswick, NJ 08901, USA.
3. Institute for Plant Biochemistry, Center of Excellence on Plant Sciences, Heinrich-Heine-University, Universitätsstrasse 1, D-40225 Düsseldorf, Germany.