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This genus Lentinus is represented in Tamil Nadu with twelve species L. tuberregium, L. pseudotenebrosus, L. squarrosulus,
L. cyathiformis, L. stupeus, L. radicus, L. velutinus, L. similis, L. subdulcis, L. strigosus, L. cladopus and L. kaufmanii. The
identification was done with both classical and molecular tools (performed for only 6 species). DNA was extracted from the dried
fungal mycelia of L. tuberregium, L. pseudotenebrosus, L. squarrosulus, L. tigrinus, L. cladopus and L. kaufamnii. The rDNA-
ITS region was amplified using the primer pairs ITS 1 and ITS 4. The DNA sequences were deposited in the GenBank database.
The sequence data from ITS 1 and ITS 2 region of isolates were aligned against published sequence data. Results were obtained
to estimate the evolutionary relationships between wide ranges of Lentinus species. The analysis of phylogeny resulted in two
different groups among the Lentinus isolates. The results of this study demonstrates that the amplified regions of the ITS contains
sufficient variations for the taxonomic problem. Thus, revealing that molecular tool is reliable with the classical taxonomy as they
are congruent with each other.
Further, polysaccharides and compound isolation studies were also performed the above mentioned isolates, as the result
biomass production is directly correlated with exopolysaccharide production, there is a positive correlation between pellet
morphology and EPS production. Further, hyphal hairs increased more EPS production while less hair does not. L. cladopus
produced maximum polysaccharides followed by L. tuberregium. The compound isolated was tested for its antimicrobial and
antioxidant potential which showed that it has very good activity.
M. Kumar worked under Dr. V. Kaviyarasan for Ph.D, on agarics of Eastern Ghats. Now, working on the diversity of Basidiomycetous fungi of South
India, especially tropical dry evergreen forests
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