1. Lehrstuhl für Molekularbiologie der Pflanzen (Botanik); Department Biologie I; Ludwig-Maximilians-Universität München; Großhaderner Str. 2 D-82152 Planegg-Martinsried Germany
2. Genome Research; Department of Biology; Bielefeld University; 33594 Bielefeld Germany
3. MIPS; Institute for Bioinformatics and Systems Biology; Helmholtz Center Munich; Ingolstädter Landstr. 1 85764 Neuherberg Germany