Activity of lectin proteins and antioxidant enzymes in the wheat germs, infected with micromycetes

In the research presented data of infection contamination of spring wheat plants Omskaya 33 variety by Fusarium root rot pathogen Fusarium (F.) oxysporum Schlectend.:Fr. and saprophytic molds Aspergillus niger. The seeds were inoculated in suspension with spores of phytopathogens (1 • 104 CFU / cm3) within one day. The disease development index and the length of germs was assessed in 14 days after planting. The content of malondialdehyde (MDA), activity of soluble lectins and cell wall lectins, catalase, ascorbate-peroxidase and soluble peroxidase was evaluated in 7 days post infection. It is found that F. oxysporum increased the activity of cell wall lectins but both pathogens inhibited the activity of soluble lectins and length of roots germs. The level of MDA, activity of ascorbate-peroxidase and soluble peroxidase increased in plants infected with F. oxysporum ; A. niger increased the activity of catalase. It appears that, depending on the phytopathogen specialization plants activate different signaling systems necessary for the formation of protective responses.