[Influence of the surface features and physiological reactions of non-host species on the development of cellular structures of rust fungi].

Parasitic rust fungi Puccinia triticina and P. coronata specialized to cereals are not able to form functionally completed cellular structures (germ tubes and appressoria) on the surface of plant species that do not belong to Poaceae. Fungus structures are induced by the surface features of grains leaves (millet, maize, oat, common wheat) to a different extent. Nuclear division and activity of parasites are partially suppressed on the non-host leaves. Fungi intrusions into sub-stomal cavities of the oat and wheat leaves are predominantly prevented by oxidative burst and to the less extent by defense proteins.