Variability of the content of phenolic compounds in the vegetative organs of Vaccinium myrtillus L. in conditions of manmade pollution

The study of the patterns of enhanced synthesis of secondary metabolites by plants continuously exposed to man-made effects is one of the urgent tasks. Violations of the structural organization of biocenoses can lead to complete degradation of vegetation in large areas. One of the sources of man-made stress on the Kola Peninsula is the Severonikel copper-nickel combine (JSC Kola MMC), located in the central industrial part of the peninsula, whose emissions contain high concentrations of heavy metals. One of the dominant species of the herbaceous shrub layer is blueberry (Vaccinium myrtillus L.), a deciduous shrub of the heather family (Ericaceae Juss.), whose leaves synthesize flavonoids, polyphenolic acids, stilbens, causing significant hypoglycemic, antiinflammatory, restorative activity. The purpose of this work is to study the variability of the content of flavonoid compounds in the vegetative organs of Vaccinium myrtillus L., growing under conditions of man-made pollution in the Arctic zone of the Russian Federation. As a result of the work, the dependence of the synthesis of flavonoids and antioxidants on the distance to the source of man-made pollution was analyzed. The general nonlinear nature of the spatial distribution in relation to the amount of flavonoids and total antioxidant activity is noted. A nonlinear tendency of accumulation of heavy metals has been established.

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