Dose-Dependent Effects of Azospirilla Lectin on the Growth of Wheat Seedlings Under Salt Stress

The dose-dependent effect of the A. brasilense Sp7 lectin on the roots of 4-day-old wheat seedlings (Triticum aestivum L. cv. Saratovskaya 29) grown under simulated salt stress was studied. In the roots of wheat seedlings under salt stress, lectin increased the activity of peroxidase and superoxide dismutase, but decreased the activity of catalase. In the roots of stressed seedlings, lectin reduced the total protein content and lipid peroxidation causing membrane damage, but increased the content of secondary metabolites, such as the total amount of phenols and flavonoids. It was concluded that Azospirillum lectins are involved in adaptive changes in the roots of wheat seedlings, due to which the relationship between bacteria and their hosts can be regulated when soil and climatic factors change.