[Effect of tobacco mosaic virus strains on the ultrastructure of parenchymal tobacco leaf cells].

It is shown that considerable amount of virus particles accumulates in the parenchymal cells infected with any of strains of tobacco mosaic virus (TMV) isolated from affected plants of papper (TMV-p), tomato (TMV-t), eggplant (TMV-e). Along with normal, abnormal (swolled and "thin") virions were found that testifies to their destruction. In reply to infection, activation of the lysosomal compartment was observed in the cells that expressed in the formation of cytoplasmic vacuoles, dyctiosomes, smooth endoplasmic reticulum elements, different vesicles, mitochondria with invaginations, multivesicular bodies. It is established that the investigating strains, in dependence on degree of stimulation of lysosomal compartment and development of intracellular lytic processes causing the destruction of virus particles and cellular structures, may be arranged as follows: TMV-p, TMV-e, TMV-t.

[Phytopathogenic viruses and their strains found in the Asian territory of Russia]. / Fitopatogennye virusy i ikh shtammy, vyiavlennye na Aziatskoi territorii Rossii.

More than 50 strains of 42 species representing 16 genera and 7 families of plant viruses have been identified in the Asian territory of Russia mainly in the South of Far East and Siberia. The viruses were united into the genera according to the data on morphology of virions and virus intracellular inclusions, the range of host-plants as well as properties of virus in infectious plant sap, physico-chemical and antigenic properties of capsid proteins. Taking into account significant differences of plant virus strains as to biological properties there are reasonable proposition to include a strain as an independent taxonomic unit into the present day classification of plant viruses.