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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2020) [Effective from January 1, 2020]For more details click here

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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(8): 3255-3261
DOI: https://doi.org/10.20546/ijcmas.2020.908.372


Physiological and Biochemical Changes in Spirulina platensis
under UV-B Stress
Radha Gupta1* and P.S. Bisen2
1Department of Plant molecular Biology and Biotechnology, College of Agriculture, RVSKVV, Gwalior, M.P., India
2School of Biotechnology, Jiwaji University, Gwalior, India
*Corresponding author
Abstract:

Physiological and biochemical variation have been investigated under UV-B stress on cyanobacterium Spirulina platensis. Morphological examinations showed significant change in terms of granulation, pigmentation, both apical and terminal end of filaments, showing altered emission intensity of pigment and changes in morphological structure of sheath in UV B treated as compared to untreated counterpart could observed respectively by bright field, fluorescent and scanning electron microscopy. UV B radiation decreased the, dry weight, Chl a, protein, but carbohydrate content is recorded to increase. UV-B treatment inhibited the both NR and NiR activity by more than 50% as compared to control. Fluorescence spectroscopy of the Chl a demonstrates that exposure of UV-B radiation significantly altered the fluorescence emission spectral profile up to 33% as compared to control. The results showed that owing to adaptation morphological and biochemical changes occur in the cyanobacterium S. Platensis subjected under UV-B treated conditions.


Keywords: Fluorescence spectroscopy, Microscopy, Spirulina cyanobacteria, UV B stress, Microbial physiology and growth
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How to cite this article:

Radha Gupta and Bisen, P.S. 2020. Physiological and Biochemical Changes in Spirulina platensis under UV-B Stress.Int.J.Curr.Microbiol.App.Sci. 9(8): 3255-3261. doi: https://doi.org/10.20546/ijcmas.2020.908.372