BIOACCUMULATION AND PHYTOTOXICITY OF COPPER IN LUDWIGIA PERENNIS L. IN URBAN - INDUSTRIAL ENVIRONMENTSUSHMA JANGID AND S.K. SHRINGI
Studies of physico-chemical parameters and metal concentrations in water and sediments of Alaniya river system near Kota at two different sites were carried out to assess the toxicity of copper. Metal accumulations in Ludwigia perennis L. growing at the contaminated sites were observed. The accumulation of copper was reported higher in root tissues compared to shoots in Ludwigia perennis L growing at Devil arab site and Borkhandi site of Alaniya river. For examining toxicity, testing of the plants species was carried out in laboratory by treating with different concentrations of copper. It was observed that lower concentrations of copper had stimulatory effect on photosynthetic pigments, whereas higher concentrations had inhibitory effects. The phenolic contents increased with increasing concentrations of copper. It was observed from the present study that Ludwigia perennis L is tolerant to the elevated copper concentrations. Therefore, L. perennis L may be used as bioassay for biomonitoring of copper pollution in the environment.
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