1. Department of Microbiology, Faculty of Science, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/C, H-1117 Budapest, Hungary
2. Department of Plant Anatomy, Faculty of Science, Eötvös Loránd University, Budapest, Hungary
3. Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Herman O. Str. 15, Hungary
4. Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, D-38124 Braunschweig, Germany