1. VIB Center for Microbiology, Flanders Institute for Biotechnology , Kasteelpark Arenberg 20, 3001 Leuven , Belgium
2. Centre of Microbial and Plant Genetics, KU Leuven , 3001 Leuven , Belgium
3. Department of Biosystems Science and Engineering, ETH Zürich , 4056 Basel , Switzerland
4. Swiss Institute of Bioinformatics , 1015 Lausanne , Switzerland
5. Laboratory of Socioecology and Social Evolution, KU Leuven , 3000 Leuven , Belgium