1. Institute of Soil Science and Land Evaluation; Soil Biology Section; University of Hohenheim; Stuttgart; Germany
2. Institute of Soil Science and Land Evaluation; Biogeophysics Section; University of Hohenheim; Stuttgart; Germany
3. Julius Kühn-Institut; Federal Research Centre for Cultivated Plants; Institute for Epidemiology and Pathogen Diagnostics; Braunschweig; Germany
4. Department of Ecological Microbiology; University of Bayreuth; Bayreuth; Germany