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Articles by R. Praveen Kumar
Total Records ( 2 ) for R. Praveen Kumar
  M. Leo Antony , D. Mubarak Ali , E. Baldev , D. Pandiaraj , R. Praveen Kumar and N. Thajuddin
  Fungi present in indoor environment always create serious health risks for the individual dwellers. The present study was focused on the enumeration of fungal contaminants in the newly constructed lab. Totally 8 different fungi were isolated from the indoor environment by using sedimentation culture plate method. The isolated species were identified conventionally, as well as using the sequence homology of internal transcribed spacer regions. This ribosomal non-coding unit sequence based analysis is the most popular locus for species identification and to study the phylogenetic variation. The fungal species isolated and described are already found to be reported as pathogens present in indoor air. Based on the sequences obtained, phylogenetic tree was constructed using both maximum likelihood and distance matrix depicts that the distance method using ClustalW2 offers better resolution and relates the related genera. The study reveals the methodology in fungal taxonomy and also for environmental monitoring of fungi.
  A. Suresh , R. Praveen Kumar , D. Dhanasekaran and N. Thajuddin
  The systematic study was conducted on the microalgal flora of Western Ghats and other parts of Eastern Ghats revealed a rich wetland algal resource for biotechnological exploration. The present study reveals with the diversity of microalgal flora in the region of Kodaikanal (10°14' N, 77°28' E), Gudalur (9°19'N 77°12'E), Agasthiyar falls (9°58'N, 78°10'E) and Kolli hills (10°12'N, 77°56'E) located in Western and Eastern Ghats of Tamilnadu, India collected in May 2011. In total, 97 species of micro algae belonging to three taxonomic groups were identified, of which 41 species belonging to Cyanophyceae, 38 species from Chlorophyceae and 18 species from Bacillariophyceae. The predominant species in Cyanophyceae were Aphanothece microscopica, Chroococcus minutus, Coelospharium dubium, Hydrococcus rivularism, Oscillatoria princeps, Nostoc muscorum, Nostoc puncteforme, Nostoc commune, Gleotricha gausii, Calothrix braunii, Rivellaria sp., Tolypothrix tenuis, Scytonema schmidtii, whereas in Chlorophyceae, Chlorella sp., Scenedesmus sp., Pediastrum duplex, Cosmarium consperum, Euastrum elagans, Micrasterias americana and in Bacillariophyceae, Navicula hallophyla, Rhophaldia gebrella, Fragellaria intermedia, Pinnularia virdis, Nitzchia palliate. Physicochemical nature of water samples were analyzed and correlated with the total microalgal diversity. Based on the correlation coefficient data, the micro algae showed positive relationship with dissolved oxygen, salinity, nutrients and negative relationship with temperature and turbidity. The species diversity index (H'), Species Richness (SR) and species evenness (J') were calculated and analyzed for microalgal population dynamic variation in the Western and Eastern Ghats.
 
 
 
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