1. CNRS–Bayer CropScience Joint Laboratory, UMR 5240, Bayer CropScience, F-69263 Lyon Cedex 9, France;,
2. Institut Jean-Pierre Bourgin, UMR 1318, INRA AgroParisTech, Saclay Plant Sciences, F-78026 Versailles Cedex, France;
3. Network Therapeutics Foundation Inc., New London, Connecticut 06320;
4. INRA, UMR 102 LEG, F-21065 Dijon, France;
5. Quintiles, 67404 Illkirch, France;
6. School of Molecular Bioscience, University of Sydney, New South Wales 2006, Australia;