1. Department of Plant Systems Biology, Flanders Institute for Biotechnology, 9052 Gent, Belgium
2. Department of Molecular Genetics, Ghent University, 9052 Gent, Belgium
3. Unité Amélioration Génétique et Physiologie Forestières, Institut National de la Recherche Agronomique, 45166 Olivet cedex, France
4. Unité de Chimie Biologique, Unité Mixte de Recherche 206 AgroParisTech/Institut National de la Recherche Agronomique, AgroParisTech Centre de Grignon, 78850 Thiverval-Grignon, France
5. Institut fur Forstbotanik, Universität Göttingen, 37077 Göttingen, Germany
6. Department of Wood Science, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
7. U.S. Dairy Forage Research Center, Agricultural Research Service, Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706
8. Centre de Recherche sur les Macromolécules Végétales, Unité Propre de Recherche 5301, Centre National de la Recherche Scientifique, 38041 Grenoble Cedex 09, France
9. Pôle de Biotechnologies Végétales, Unité Mixte de Recherche/Unité Propre de Service 5546, Centre National de la Recherche Scientifique, 31326 Castanet Tolosan, France
10. Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
11. Max-Planck Institute of Molecular Plant Physiology, 14476 Golm-Potsdam, Germany
12. Centre Technique du Papier, 38044 Grenoble Cedex 9, France
13. U.S. Dairy Forage Research Center, Agricultural Research Service, U.S. Department of Agriculture and Department of Biological Systems Engineering, University of Wisconsin, Madison, Wisconsin 53706