1. University of Helsinki, Department of Microbiology, Faculty of Agriculture and Forestry, 00014 Helsinki, Finland
2. University of São Paulo, Center for Nuclear Energy in Agriculture, Avenida Centenário 303, 13400-970 Piracicaba, São Paulo, Brazil
3. Department of Chemistry, University of Jyväskylä, 40014 Jyväskylä, Finland
4. Department of Biological and Environmental Science, Nanoscience Center, University of Jyväskylä, 40014 Jyväskylä, Finland