1. National Research Council, Institute of Sciences of Food Production (CNR-ISPA), Bari, Italy
2. Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
3. Max Rubner-Institut, Department of Microbiology and Biotechnology, Kiel, Germany
4. Department of Environmental Biology, Sapienza University of Rome, Rome, Italy