1. BPMP, Univ Montpellier, CNRS, INRA, SupAgro, Montpellier, France
2. Laboratory of Genetics, Wageningen University, Wageningen, Netherlands
3. Unité Mixte de Recherche, Montpellier, France
4. Gregor Mendel Institute, Austrian Academy of Sciences, Vienna Biocenter, Vienna, Austria
5. Plant Molecular and Cellular Biology Laboratory, Salk Institute for Biological Studies, La Jolla, United States