Effect of Nickel ion on Stem of Hydrilla verticillata L.

Abstract

The study sought to evaluate the potential of Hydrillaverticillata L. in the absorption of Nickle(Ni) ion and possible variations in its tissues after 7 days of exposure to this metal. Hydrilla verticillata L. were cultured in Hoagland medium supplemented with various Ni ion concentrations (as 3,5,7,9 and 11 mg/ml) and were separately harvested after 3, 5 & 7 days. In the anatomical analysis, disorganization of epidermal cells, degeneration of cortical cells and pith, highlights the variation resulting from Ni ion toxicity. However these variations were not sufficient to damage the development of an individual. Hydrilla verticillata L. showed high capacity of extraction and storage of the metal, being food alternative to aquatic environments, with high concentration of Ni ion.

Keywords

• Anatomical variations
• aquatic environment
• hoagland medium
• Hydrilla verticillata L
• Ni ion toxicity
• stem