1. Laboratoire Microorganismes et Biomolécules Actives, Université Tunis El Manar (FST) & Université de Carthage (INSAT), 2092 Tunis, Tunisia
2. School of Biology, Newcastle University, Ridley Building 2, Newcastle upon Tyne, NE1 7RU, UK
3. Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
4. Central Facility for Microscopy, HZI – Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
5. Ecologie Microbienne, Centre National de la Recherche Scientifique UMR 5557, Université de Lyon, Université Claude Bernard Lyon I, INRA, UMRA1418, Cedex, 69622 Villeurbanne Cedex, France
6. Department of Molecular, Cellular, and Biomedical Sciences, University of New Hampshire, 289 Rudman Hall, 46 college Road, Durham, NH 03824-2617, USA