Studies of uptake and toxic effects of NI (II) on Salvinia natans |
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| Authors: | Asit K Sen Manisha Bhattacharyya |
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| Institution: | 1. Department of Chemistry, Visva-Bharati University, Santiniketan-731235, West Bengal, India
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| Abstract: | The uptake of Ni (II) and toxic effects of the metal on some biochemical parameters in Salvinia natans L. were studied. The uptake of Ni (II) by the plants gradually increased with increase in concentration of Ni (II) in the culture medium. Maximum accumulation of Ni (II) was noted within a day and maximum removal (about 90%) was recorded upto 20 Μg mL?1 of Ni (II). Accumulation of the metal in roots (14.75 Μg mL?1) is greater than that of shoots (5.25 Μg mL?1). Ni (II)>10 Μg mL?1 promoted senescence of Salvinia plants by decreasing chlorophylls, protein, amino acid, Hill activity, dry weight and by inducing necrosis. In the absence of other pollutants, Salvinia plants may be used for removal of Ni (II) from effluents and also as an indicator of Ni pollution. |
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