ACCUMULATION OF HEAVY METALS AND CONCURRENT PHYSIOLOGICAL CHANGES IN HYDROPHYTES

Aquatic plants have shown great promise to deal with the metallic pollutions. Floating and submerged plants accumulate heavy metals in leaves and roots. Phytoremediation is a new cleanup technology exploiting the metal interaction ability of plants. The present study reports the effect of cadmium, c...

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Bibliographic Details
Published inAdvances in pharmacology and toxicology Vol. 12; no. 1; p. 41
Main Authors Jagtap, M N, Kulkarni, M V, Puranik, P R
Format Journal Article
LanguageEnglish
Published Jalgaon Advances in Pharmacology and Toxicology (APT Journals) 01.04.2011
Subjects
Aquatic plants
Cadmium
Chlorophyll
Flowers & plants
Heavy metals
Life sciences
Metabolites
Metals
Nickel
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Summary:Aquatic plants have shown great promise to deal with the metallic pollutions. Floating and submerged plants accumulate heavy metals in leaves and roots. Phytoremediation is a new cleanup technology exploiting the metal interaction ability of plants. The present study reports the effect of cadmium, chromium and nickel at various concentrations in hydroponic system on three hydrophytes; Pistia stratiotes, Salvinia molesta L. and Hydrilla verticillata. L. Casp. The chlorophyll content found to be decreased in all combinations of plants and metal in comparison with control plants. The polyphenol synthesis was found to be stimulatory to the metal concentrations. Increase in metal concentrations increased the polyphenol content of hydrophytes. Highest accumulation of nickel (18.22 mg/g) and chromium (9.79 mg/g) was observed in Salivinia molesta than other plants at varying metal concentrations. While, highest accumulation of cadmium (13.78 mg/g) was seen in Pistia stratiotes. The order of plants on the basis of metal accumulation could be prepared as Pistia > Salvinia > Hydrilla for cadmium, Salvinia > Hydrilla > Pistia for chromium and nickel. The results revealed that Pistia stratiotes as an efficient accumulator of metals. [PUBLICATION ABSTRACT]
ISSN:0973-2381