1. Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
2. Institute for Agribiotechnology Research (CIALE), Villamayor, Salamanca, Spain
3. Institute of Microbiology of the Czech Academy of Sciences, Vídeňská, Prague, Czech Republic
4. Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Bologna, Italy
5. Associated Research Unit of Plant-Microorganism Interaction, USAL-CSIC (IRNASA), Salamanca, Spain