ABSTRACT
The effect of the diterpene glycoside stevioside and high concentrations of heavy metals on the molecular heterogeneity of lectins was studied in seedlings of Kazanskaya 560 winter wheat cultivar. Stevioside induced the emergence of a new 45-kDa lectin. Cultivation of wheat seedlings in CdSO4 and ZnSO4 solutions resulted in the emergence of the protein with Mr = 88 kDa. We detected the presence of both lectins in seedlings during combined treatment with stevioside and heavy metals.
Subject(s)
Cadmium/pharmacology , Diterpenes, Kaurane/pharmacology , Glucosides/pharmacology , Plant Lectins/chemistry , Triticum/drug effects , Zinc/pharmacology , Cadmium/toxicity , Plant Lectins/metabolism , Seedlings/drug effects , Seedlings/metabolism , Triticum/metabolism , Zinc/toxicityABSTRACT
This is the first study on the effect of stevioside, a diterpene glycoside that is a new promising plant growth regulator, on the antioxidant and photosynthetic systems of seedlings of the winter wheat cultivar Kazanskaya 560. Stevioside has been demonstrated to cause a decrease in the malondialdehyde formation rate, an increase in the activities of antioxidant enzymes (peroxidase and ascorbate peroxidase), and the accumulation of proline and carotenoids. Apparently, this integrated effect of stevioside can prevent oxidative stress caused by adverse environmental factors in plants.
