[Cellular features of immune reaction of common wheat with Lr19 gene to brown rust fungus infection].

The effect of resistant gene Lr19 on the development of brown rust fungus Puccinia triticina in the immune line of Thatcher variety was similar to that of nonhost species. The development of the fungus was inhibited in the plant tissue at the early stages. The fungus cells demonstrated structural disorganization of the nuclei and mitochondria before host cell invasion. The plant cell membranes and chloroplasts were changed; large chromatin aggregates appeared in their nuclei. Hypersensitive reaction developed after inhibition of the fungus.