1Laboratoire de Génomique Fonctionelle des Plantes, 33 rue St Leu, F-80039 Amiens, Cedex, France
2Plant Biotechnology Institute, National Research Council, Saskatoon, Sask., Canada S7N 0W9
3Department of Botany, University of Toronto, Toronto, Ont., Canada M5S 3B2
4Department of Biology, McMaster University, 1280 Main St West, Hamilton, Ont., Canada L8S 4K1
5Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK,