1. Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
2. Microbial Ecology, University Lyon 1, The ‘Rhizosphere’ Team, Lyon, Villeurbanne, France
3. Department of Plant Biology, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
4. Faculty of Biology, Universitatea Alexandru Ioan Cuza, Iasi, Romania
5. Faculty of Agiculture and Natural Sciences, University of Mpumalanga, Mpumalanga, South Africa
6. Department of Biology, University of Waterloo, Waterloo, Ontario, Canada