1. Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61–614 Poznań, Poland
2. Department of General Botany, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
3. Department of Applied Ecology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
4. Electron and Confocal Microscope Laboratory, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland
5. Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, 20520 Turku, Finland