INFLUENCE OF HIGH SALINITY AND S-METHYLMETHIONINE ON SOME HEALTH-PROMOTING METABOLIC PROPERTIES OF GARDEN ROCKET LEAVES
DOI:
https://doi.org/10.24193/subbchem.2021.4.28Keywords:
ascorbate, carotenoids, phenoloids, lipid peroxidation, salt stress.Abstract
Production of health-promoting substances in plants’ metabolism may be modulated by treatment with chemical stress factors and natural bioactive compounds, which enhance stress tolerance through stimulation of biosynthesis of several protective metabolites. The aim of this work is to reveal metabolic interactions between high salinity stress (exerted by the presence of 100 mM NaCl in the mineral nutrient solution) and treatment of plants with 0.1 mM S-methylmethionine (also known as vitamin U). This plant-derived bioactive compound enhances the production of antioxidants such as carotenoids, ascorbate and other phenoloids in leaves of rocket plantlets exposed to salt stress, while reducing the concentration of toxic malondialdehyde and related catabolic products of membrane lipid peroxidation. Thus, a suitable combination of high salinity and plant hardening with S-methylmethionine may improve the quality of fresh rocket leaves upon human and animal consumption.References
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