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Pakistan Journal of Biological Sciences
  Year: 2012 | Volume: 15 | Issue: 17 | Page No.: 813-820
DOI: 10.3923/pjbs.2012.813.820
 
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Biodiversity and Molecular Evolution of Microalgae on Different Epiphytes and Substrates

D. MubarakAli, M.I. Mohammed Ershath and N. Thajuddin

Abstract:
An exploration of the microalgal biodiversity from different epiphytes and substrates of pool water in temple at Tiruchirappalli District was studied. Totally ten epiphytic forms were selected for this investigation. In that, totally 44 species of 30 genera belonging to 3 families of the Chlorophyceae, Cyanophyceae (heterocystous and non-heterocystous) and Bacillariophyceae were identified and recorded. The dominant species in this environment were Cyanobacteria (Chroococcus sp. and Oscillatoria sp., Phormidium sp.), Green algae (Tetradron sp. and Scenedesmus sp.) and Diatom (Fragilaria sp. and Navicula sp.) were documented. The molecular taxonomy of cyanobacteria were also analyzed, in this regards, DNA was extracted; 16S rDNA gene was amplified and sequenced. The evolutionary relationship was found in the epiphytic microalgae by Neighbour-Joining method by construction of phylogenetic tree.
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