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In the course of the ongoing chemical study of species of Silene genus, S. repens Patrin as a common species of the genus, was selected as the object of this study. Using high-performance liquid chromatography with photodiode array detection and electrospray ionization triple quadrupole mass spectrometric detection (HPLC-PDA-ESI-tQ-MS), the presence of 12 ecdysteroids and 6 glycosylflavones was established in S. repens introduced seedlings. 20-Hydroxyecdysone and polypodine B, as well as sileneside E and schaftoside, were the dominant compounds in introduced seedlings of S. repens. The effect of exogenous phytohormones and elicitors on the productivity and accumulation of ecdysteroids and glycosylflavones in introduced seedlings of S. repens was investigated for the first time. It was found that the use of ethyl arachidonate (100 mg/L) to increase the productivity of S. repens is justified. To obtain S. repens with a high content of ecdysteroids and glycosylflavones, it is recommended to apply epibrassinolide (100 mg/L) and 4-chlorophenoxyacetic acid (100 mg/L), respectively. Antioxidant activity of S. repens against 2,2-diphenyl-1-picrylhydrazyl radical (DPPH·) was determined, and it was revealed that sileneside E and schaftoside, as well as meloside A and isovitexin had the highest antioxidant activity among the studied compounds of S. repens.

Phytohormones and Elicitors Enhanced the Ecdysteroid and Glycosylflavone Content and Antioxidant Activity of Silene repens