Time-course of pathogen induced accumulation of callose as mechanical protective barrier in wheat seedlings.

Results of fluorescence microscopic research and quantitative luminescent analysis of pathogen induced callose accumulation in winter wheat seedlings of two cultivars different in resistance to eye spot causal agent are presented. Higher content of constitutive callose in intact seedlings of unsusceptible cultivar at the initial stages of vegetation was determined. It correlates with resistance of this cultivar to the eye spot causal agent. The increased pathogen induced accumulation of callose in seedlings of susceptible cultivar is revealed, but didn't influence it protection against pathogen.