1. Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-90183 Umeå, Sweden
2. Centre de Ressources Régionales en Biologie Moléculaire, Université de Picardie Jules Verne, 80039 Amiens, France
3. Australian Research Council Centre of Excellence in Plant Energy Biology, University of Western Australia, Crawley WA 6009, Australia
4. University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj Napoca, Romania
5. Institut Jean-Pierre Bourgin, Unité de Recherche 501, Institut National de la Recherche Agronomique Centre de Versailles, 78026 Versailles Cedex, France