%0 Journal Article
%T The Inhibition of Bean Plant Metabolism by Cd Metal and Atrazine III: Effect of Seaweed Codium iyengarii on Metal, Herbicide Toxicity and Rhizosphere of the Soil
%A Rafia Azmat
%A Aliya Hayat
%A Tanveer Khanum
%A Rukhsana Talat
%J Biotechnology
%D 2006
%I Asian Network for Scientific Information
%X A seaweed-dried powder of Codium iyengarii was used to investigate the effect on bean plants. These cultivated in metal contaminated and atrazine herbicide environment. The use of seaweed increased the growth of seedlings under toxicity of metal and herbicide. Seaweed contains all trace elements and major and minor plant nutrients such as alganic acid, vitamins, auxins, gibberllins and antibiotics. Results were interpreted in relation with metabolic activity of plant, bioremediation of atrazine and soil rhizosphere. It was observed that seaweeds containing alganic acid act as a soil conditioner, which improved the water holding characteristics of soil and helped in the formation of crumb structure. The toxicity of heavy metal Cd in conjunction with atrazine herbicide was inhibited up to 100 ppm of metal concentration. Significant improvement in seed germination, morphology and physiological processes were observed. Seaweeds helps in improving the rhizosphere of the contaminated soil which results in the bioremediation of atrazine by soil bacteria. This can be attributed with the growth of the plant in heavy metal contaminated environment and also controls the toxicity of trizine herbicide. While an increase in the concentration of Cd metal shows that it retarded the growth of the bean plant in the presence of seaweeds too.
%K Seaweeds
%K alganic acid
%K metabolic activity
%K Cd
%K atrazine
%U http://docsdrive.com/pdfs/ansinet/biotech/2006/85-89.pdf