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IJSTR >> Volume 8 - Issue 7, July 2019 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Molybdenum Stress And Its Effect On Growth And Biopigment Profile Of Blue Green Alga Oscillatoria Agardhii

[Full Text]



Ameesh Dev Singh, Gajendra Pal Singh



Oscillatoria agardhii, Heavy Metal, Biopigments, Molybdenum, Cyanobacteria



Heavy metals are naturally occurring elements that are found in the earth’s crust but their environmental contamination and human exposure result from anthropogenic activities such as mining and smelting operations, industrial, domestic and agricultural use of metals and metal-containing compounds. Blue green algae have high metal absorption capacities which help in removal of heavy metals and other nutrients from the waste streams. Effect of heavy metal stress on biopigments is commercially important as algal pigments are used as natural dyes for food and cosmetics, as pharmaceuticals and also as fluorescent markers in biomedical research. Wide-spread occurrence of Blue green algae along with their ability to grow and concentrate heavy metals, ascertains their suitability in practical applications of waste-water bioremediation. For present research work freshwater filamentous Blue green algas Oscillatoria agardhii was isolated from Mansagar Lake of Jaipur and was subjected to heavy metal stress. Research work shows the effects of different concentrations of heavy metal Molybdenum in growth media of Oscillatoria agardhii on growth and biopigments such as chlorophyll-a, carotenoids, phycocyanin, allophycocyanin, and phycoerythrin. Pure cultures of Oscillatoria agardhii were grown on Zarrouk’s medium containing different concentrations (1-5ppm) of Molybdenum trioxide. Significant changes in growth and biopigments’ production was reported due to heavy metal stress.



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