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Articles by N. Rajeshwara Rao
Total Records ( 2 ) for N. Rajeshwara Rao
  S. Kamala Kannan , B. Prabhu Dass Batvari , P. Devarajan , P. Periakali , R. Krishnamoorthy , N. Rajeshwara Rao , S.G.D. Sridhar , P.N. Ballukraya , K.K. Sharma and M. Jayaprakash
  In the present study, available herbal resources among the 96 villages around Pulicat Lake have been isolated, identified and located using global positioning system. Nearly 34 species of herbal plants belonging to 24 families have been observed in these villages. Analysis of 27 plant and 27 soil samples for concentrations of toxic heavy metals (cadmium, chromium and lead) reveals relatively higher concentrations of cadmium (4.81 μg mL-1) and chromium (1.472 μg mL-1) in the plants when compared with the soil samples. In addition to this, 22 water samples were collected and their physiochemical parameters like pH, salinity, chloride, carbonate and bicarbonate were analyzed. The results obtained indicate that pH and chloride do not seem to influence the bioavilability of toxic heavy metals. Further work is required to establish the relationships among physiochemical characters of the water, soil, accumulation of heavy metals in plants and their physiology.
  S. Kamala Kannan , K.J. Lee , R. Krishnamoorthy , A. Purusothaman , K. Shanthi and N. Rajeshwara Rao
  Ennore creek sediments are often severely polluted with the heavy metal chromium. Several chromium-resistant bacteria were isolated and identified from the sediments and all the isolates exhibited multi-metal resistance. Chromate reduction assay showed that the isolated Bacillus cereus ECD strains were able to reduce chromate up to 76.1% at a concentration of 100 μg mL-1. Growth of the Bacillus species in the presence of increasing concentration of chromate was also determined. Since the Bacillus cereus ECD strain has high resistance to chromate and other metals and also reduces chromate under aerobic conditions, this bacterium might be potentially applicable for the treatment of metal- based industrial effluents.
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