1. Laboratory of Environmental Microbiology; Institute of Microbiology of the CAS; Vídeňská 1083 14220 Praha 4 Czech Republic
2. Department of Functional Ecology; Institute of Botany, The Czech Academy of Sciences; Dukelská 135 37982 Třeboň Czech Republic
3. Department of Mycorrhizal Symbiosis; Institute of Botany, The Czech Academy of Sciences; Zámek 1 252 43 Průhonice Czech Republic
4. Department of Experimental Plant Botany, Faculty of Science; Charles University; Viničná 7 12801 Prague 2 Czech Republic
5. Institute of Soil Biology, Biology Centre of the CAS; Na Sádkách 7 37005 České Budějovice Czech Republic
6. Institute for Environmental Studies, Faculty of Science; Charles University; Benátská 2 12801 Prague 2 Czech Republic