Effect of copper and cadmium ions on the pigments of water plants hydrocharitaceae

Effect of Cu and Cd ions on the pigments of water plants Hydrocharitaceae in conditions of metals accumulation and during the post stress period was investigated. The plants represent various ecotypes: Egeria densa and Hydrilla verticillata are artificially cultivated plants, Elodea сanadensis - natural ecotype. It was shown that under action of Cu and Cd ions in concentration 100 μM concentration of chlorophylls a and b as well as of carotenoids are reduced and chlorophyll content in light-harvesting complex increases. In comparison with a chlorophyll a and carotenoids a chlorophyll b is appeared to be more tolerant to influence of Cu and Cd. Duration of metals influence on plants determines rehabilitation efficiency.