1. Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 165 02 Prague 6, Czech Republic
2. Department of Plant Physiology, Faculty of Science, Charles University, 128 44 Prague 2, Czech Republic
3. Department of Botany and Plant Pathology and Center for Genome Research and Biocomputing, Oregon State University, Corvallis, Oregon 97331
4. Biology Centre of ASCR, Institute of Parasitology, 370 05 České Budějovice, Czech Republic
5. Laboratory of Electron Microscopy, Faculty of Science, Charles University, 128 44 Prague 2, Czech Republic
6. Laboratory of Mass Spectrometry, Faculty of Science, Charles University, 128 44 Prague 2, Czech Republic