1 Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, D-79104, Freiburg, Germany. stefan.rensing@biologie.uni-freiburg.de.
2 Plant Biotechnology, Faculty of Biology, University of Freiburg, Schaenzlestr. 1, D-79104, Freiburg, Germany.
3 Department of Plant Systems Biology, VIB, B-9052, Ghent, Belgium.
4 Bioinformatics and Evolutionary Genomics, Department of Molecular Genetics, Ghent University, Technologiepark 927, B-9052, Ghent, Belgium.