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Articles by D. Vijayan
Total Records ( 2 ) for D. Vijayan
  D. Vijayan , K. Manivannan , S. Santhoshkumar , D. Pandiaraj , M. MohamedImran , N. Thajuddin , K. Kala and M.H. Muhammad Ilyas
  The biodiversity study was executed to reveal the microalgal population in the Gundur Lake located in the southern part of Tiruchirappalli in Tamil Nadu, India. The samples were collected from the six chosen sites in the lake as algal mats and plankton samples during March 2014. In total, 81 species were reported which includes 35 species belongs to Chlorophyta, 9 species belongs to Bacillariophyta and 37 species belongs to Cyanophyta. Eight microalgal genera such as Pediastrum, Cosmarium rhophalodia, Microcystis, Chroococcus, Oscillatoria, Scytonema and Gloeotrichia were found predominant in the lake. Physicochemical parameters of the water samples were also analysed to evaluate the algal diversity. The suitable trophic condition and eutrophic nature of the lake favoured the algal dominance and bloom formation.
  K. Kannan , D. Vijayan , D. MubarakAli , R. Praveenkumar , A. Parveez Ahamed and N. Thajuddin
  Azolla-Anabaena symbiosis is one of the vital roles in the field of agriculture and development. Both the associates have mutualistic relationship and work together for carbon and nitrogen fixation to soil. The present study is to investigate the new entity in the relationship between the Azolla and Cyanobacteria. Endophytic and Epiphytic cyanobacterial associates were isolated from different Azolla sp. viz., Azolla pinnata, Azolla caroliana and Azolla filliculoides. The isolates were further characterized by conventional methods and molecular techniques. A novel entity, Westiellopsis was found in the association with Azolla filiculoides comparatively with previously reported. Furthermore, Anabaena variabilis precluded from Azolla filiculoides was produce red color pigmentation. The C-Phycoerythrin content of the isolated cyanobacterial symbiont was measured by absorption and fluorescence emission spectroscopy. The nutritional optimization was done showed two fold increased in pigment production than the control.
 
 
 
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