1. Department of Plant Systems Biology VIB Technologiepark 927 B‐9052 Gent Belgium
2. Department of Plant Biotechnology and Bioinformatics Ghent University Technologiepark 927 B‐9052 Gent Belgium
3. Department of Molecular Microbiology VIB Kasteelpark Arenberg 31 B‐3001 Leuven Heverlee Belgium
4. Laboratory of Molecular Cell Biology Institute of Botany and Microbiology KU Leuven Kasteelpark Arenberg 31 B‐3001 Leuven Heverlee Belgium