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The high level of environmental ?ontamination is a stress factor for plants, which causes an integrated nonspecific response aimed at the survival of biosystems due to the formation of protecting mechanisms. The effect of long-term chemical contamination of soils on the growth and structure of reed (Phragmites australis Cav.) roots and stems has been investigated. Soils and plants on monitoring plots in the zone of sediment ponds of chemical plants were studied. The area under study is located in the Severskii Don...