Author(s): Arumuganainar Suresh, Gowrisankar

Email(s): blueyellowsnu@gmail.com

DOI: 10.5958/0974-360X.2017.00093.2   

Address: Arumuganainar Suresh1, 2*, Gowrisankar2,3
1Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Pallavaram, Chennai - 600117, Tamil Nadu, India.
2Department of Microbiology, Sri Paramakalyani College, Alwarkurichi, Tamilnadu 627412, India.
3Division of Bacterial Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, 30333, USA.
*Corresponding Author

Published In:   Volume - 10,      Issue - 2,     Year - 2017


ABSTRACT:
Enhanced solar ultraviolet radiation due to ozone depletion is a major stress factor for cyanobacteria in aquatic and terrestrial ecosystems. Therefore to study the impact of UV-B radiation on cyanobacteria, we isolated three genus of blue green algae namely Anabaena spp., Nostoc spp., and Scytonema spp., and were exposed to UV-B at sublethal dose. The UV exposed cyanobacteria were screened analyzed for the specific growth rate, pigments and heterocyst count with wild type strains for a period of 20 days. All UV-B exposed strains were exhibited stunted growth and pigments content except Scytonema spp. It exhibited accelerated growth and increased carotenoids and heterocyst number. This investigation concluded that the UV-B radiation has negative impact on all genus studied except Scytonema spp in which strain improved in many aspects (positive impact). There by high efficiency strains can be generated using UV-B mutation that could potentiate their application as biofertilizer and also for value added products.


Cite this article:
Arumuganainar Suresh, Gowrisankar. Impact of Ultraviolet-B Radiation on Cyanobactrial Isolates. Research J. Pharm. and Tech. 2017; 10(2): 461-466. doi: 10.5958/0974-360X.2017.00093.2


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RNI: CHHENG00387/33/1/2008-TC                     
DOI: 10.5958/0974-360X 

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