Some morphological peculiarities ofMycoplasma bodies occurring in plants infected with potato witches' broom disease

Our paper describes some morphological peculiarities ofMycoplasma bodies located in vascular bundles ofNicotiana glauca Grah. and tomato infected with potato witches' broom disease. The influence of postfixation on the density of bodies and possible development of artifacts was studied in particular. It was found that bodies of adjoining cells may have a different shape. Also elementary bodies, approximately of uniform diameter, may occur in masses in close proximity to the cells containing “adult”Mycoplasma bodies. Deformed large bodies giving in a certain position the impression of “vacuolization” are evidently degenerated saucershaped forms. In addition toMycoplasma some other bodies with different inner structure were observed in the same cells.