Affiliation: | Department of Biology (M.K.R., M.S., L.B., L.F., D.R.), and Swiss Institute of Bioinformatics (L.F.), University of Fribourg, CH–1700 Fribourg, Switzerland; and;Department of Reproduction and Plant Development, Centre National de la Recherche Scientifique/Institut National de la Recherche Agronomique/Ecole Normal Supérieure de Lyon, F–69364 Lyon Cedex 07, France (P.M., M.V.) |