Abstract
In the present study the effect of Tin on three nitrogen-fixing cyanobacteria Nostoc muscorum, Anabaena doliolum and Aulosira fertilissima have been analyzed in terms of Total growth, Total carbohydrate, Proteins and Amino acids using 5 ppm to 55 ppm concentrations of Tin. Heterocyst frequency calculated after growth period of 18 days. Nostoc muscorum have been found to tolerate a high concentration of the test metal and Aulosira fertilissima found to be most sensitive towards Tin. 20 and 30 ppm concentration of Tin found to be toxic for test organisms. Complete growth inhibition occurs at 50 ppm. Heterocyst frequency increases with the increasing concentrations of Tin.
Publisher
Action For Sustainable Efficacious Development and Awareness
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