Efficiency of pre-sowing seeds by UV-C and X-ray exposure on the accumulation of antioxidants in inflorescence of plants of Matricaria chamomilla L. genotypes

Abstract

Secondary metabolites of the medicinal plants are among the main active substances of the drugs used in medicine. An important place among them belongs to phenols and flavonoids, which are some constitutive components of the redox homeostasis maintaining system through the animal and plant organisms.Radiation exposure is one of the most powerful factors leading to the oxidative stress, stimulating the formation of radioprotectors with antioxidant, anticancer, immunomodulatory, and anti-inflammatory effects. The data presented in the previous report indicated some differences in the pharmaceutical raw material yield stimulation of various genotypes under UV-C and X-ray exposure. This stage of the study is devoted to the investigation of the stimulating the yield of flavonoids and phenols as the markers of the secondary metabolism reorganization.The differences in the dynamics of the flavonoids and phenols content in plants of eight genotypes of the chamomile in the control and under pre-sowing UV-C and X-ray radiation exposure of seeds were studied. Groups of the genotypes by the stimulating effect on the content of antioxidants were determined mainly under UV-C exposure, as well as groups with a significant increase in the content of antioxidants under X-ray exposure were identified. A highly significant correlation (R = 0.84) between the stimulation of the flavonoid synthesis under X-ray exposure and the level of these antioxidants in the control is shown. Above average (R = 0.64) insignificant correlation is observed between the flavonoids level under UV-C exposure and in the control variant.