1. Department of Molecular Biology, Genetics; Aarhus University; Forsøgsvej 1 Slagelse 4200 Denmark
2. Plant Genome and Systems Biology; Helmholtz Zentrum München; German Research Center for Environmental Health; Ingolstädter Landstrasse 1 Neuherberg 85764 Germany
3. Institute of Biological, Environmental and Rural Sciences; Aberystwyth University; Aberystwyth SY23 3DA UK
4. Institute of Agricultural Sciences; ETH Zurich; Universitätstraße 2 8092 Zürich Switzerland
5. Department of Molecular Biology and Genetics; Research Centre Foulum; Aarhus University; Blichers Allé 20 8830 Tjele Denmark
6. The Genome Analysis Centre; Norwich Research Park; Norwich NR4 7UH UK