IN-SITU LOCALIZATION OF ATPASE ACTIVITY IN CELLS OF PLANTS INFECTED BY MAIZE-DWARF MOSAIC POTYVIRUS

Cells of healthy maize plants as well as those infected by maize dwarf mosaic potyvirus were examined by electron microscopy for the locatio n of ATPase activity. In healthy and virus infected plants, ATPase act ivity was found in plasma membranes, chloroplast thylakoid membranes, nuclear membranes and in mitochondria. In virus-infected cells, ATPase activity was also observed in cytoplasmic vesicles which were found i n dose proximity to the virus-specific cytoplasmic inclusion bodies (C I), at the ends of the arms of the CI and in plasmodesmata.