1. Spanish-Portuguese Center for Agricultural Research (CIALE), Department of Microbiology and Genetics, University of Salamanca, Campus of Villamayor, Río Duero 12, 37185 Salamanca, Spain
2. Area de Microbiología, Escuela Universitaria de Ciencias de la Salud, Universidad de León, Campus de Ponferrada, Avda. Astorga s/n, 24400 Ponferrada, Spain