1. Department of Ecological and Biological Sciences, University of Tuscia, Largo dell'Università snc, 01100, Viterbo, Italy
2. Department of Microbiology and Plant Pathology, University of California, 900 University Ave, Riverside, California 92521
3. Department of Biogeochemistry and Microbial Ecology, Museo Nacional de Ciencias Naturales, Spanish National Resource Council, Madrid, Spain
4. Italian National Antarctic Museum, Mycological Section, Genoa, Italy