Vol. 3, Issue 1 (2018)
Alteration in biochemical contents of Azolla by heavy metals (Zn and Pb)
Author(s): Dr. Rimjhim Sheel, Dr. Kumari Nisha
Abstract: According to Gill (2014), heavy metals are major environmental pollutants, especially in high anthropogenic areas. These heavy metals can bind with essential cellular components of plant such as proteins, amino acids, chlorophyll and nitrogen and finally influence their functions. Several water ferns are capable of accumulating Heavy Metals. One of which is Azolla species. So, it is useful in the detoxification of industrial effluents. Roots of Azolla plant absorb pollutants including Heavy Metals Zn and Pb and can be used for phytoremediation. The aim of this study was to assess the influence of heavy metal on some biochemical parameters (Chlorophyll, Free Amino acid, Protein and Nitrogen) of water fern Azolla. Plants were grown in nutrient medium (Shive and Robbins medium-I),according to Sheel & Sinha (2003), for 30 days containing heavy metals 2.5%, 5% and 10% of Zn and Pb separately. These Heavy metals transfer from root to the shoot resulting in reducing the concentration of essential nutrients such as K+, Na+ and Mg++ in plants and inhibits normal growth (Lumpkin and Plucknett, 1980). The uptake of heavy metals also affect the concentration of Chlorophyll, Protein, Free Amino acid and Nitrogen. Result of the experiment also shows that high concentration of Zn is more effective on biochemical parameters of Azolla sps. then high concentration in Pb.