The specific role of chitinases in disease resistance
in plants is difficult to assess, since these enzymes are
induced by some factors that cause simultaneous in-
crease in the activities of other defense reactions and
PR proteins as well [9]. On the other hand, the data on
chitinase induction and its final concentrations in com-
patible and incompatible tissues with fungal pathogens
and its role in host-defense mechanisms in various
plant-pathogen interactions are different [3]. Nitzsche