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M.Sangeetha, A. Sivarajan and R. Balagurunathan*
Actinobacterial Research Laboratory, Department of Microbiology, Periyar University, Salem - 636 011
Ind.J.Applied.Microbiol. 2019 .22(3) : 47-56
The major global health burden is rising of drug resistance. New screening approaches, exploration of unscreened ecosystem are continuously required to combat antibiotic-resistant concern. Bamboo which is the one of the important medicinal value plants and the impact of bamboo properties might influence the crucial activity of soil microbes. Rhizosphere microorganisms provide an excellent resource for the isolation and identification of therapeutic important products. Among them, actinobacteria are an important source in antibiotic development. Based on this view, in the present investigation, an effort was made to screen different ecosystem which is a unique unscreened and a diverse bamboo ecosystem for the isolation of potent antibiotic producing actinobacteria. Actinobacteria isolates were obtained from rhizospheres of bamboo in Megamalai forest, Western Ghats of Tamil Nadu, India. The physicochemical properties of rhizosphere soil sample were analysed. Isolates were selected based on the different morphological characteristics. Totally 32 actinobacteria species, including rare Micromonospora and Streptosporangium were isolated. Based on the morphological characteristics, 22strains were screened for antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA).Among that, five actinobacterial strains BS 6, BS 9, BS 11, BS 12 and BS 19 have possessed zone of inhibition of 15mm, 14mm, 16 mm, 17 mm and 30 mm respectively. The screening results highlighted that bamboo environment represented a rich reservoir for isolation of actinobacteria, which are potential sources for discovery of prime antibiotics.
Keywords: Actinobacteria, bamboo, antibiotic, MRSA, antibacterial.
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