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Exploration of mangrove‑associated actinobacteria from South Andaman Islands,India

Systems Microbiology and Biomanufacturing 2023年第4期3卷 702-718页

作者： Balakrishnan Meena Lawrance Anburajan Munir Ahamed Johnthini Nambali Valsalan Vinithkumar Gopal Dharani Atal Centre for Ocean Science and Technology for Islands National Institute of Ocean TechnologyMinistry of Earth SciencesGovernment of IndiaDollygunjPort Blair 744103Andaman and Nicobar IslandsIndia Marine Biotechnology Division Ocean Science and Technology for Islands GroupNational Institute of Ocean TechnologyMinistry of Earth SciencesGovernment of IndiaChennai 600100Tamil NaduIndia Department of Marine Science Bharathidasan UniversityTiruchirappalli 620024Tamil NaduIndia

In this study,a total of 1125 actinobacteria were isolated from the selected mangrove species:Avicennia marina,rhizopora mucronata and Ceriops tagal from three study stations viz.,Minnie Bay,Carbyn’s Cove and *** these three stations,the highest number of actinobacteria was recorded in Carbyn’s Cove(64.97%),followed by(25.51%)at Burmanallah and the minimum of(9.51%)was recorded in Minnie *** number of actinobacteria was recorded from Ceriops tagal(40.44%)than the other selected mangrove species Avicennia marina(34.13%)and rhizopora mucronata(25.42%).Among the 1,125 mangrove-associated actinobacteria,103 morphologically different isolates from the Minnie Bay station was selected for the further characterization *** antibacterial assay,30.11%of the isolates revealed inhibitory activ-ity against all tested clinical pathogens and 65%isolates displayed inhibitory activity against minimum of 04 tested clinical *** survival studies of the actinobacterial isolates also accomplished to withstand in varied NaCl and pH *** 103 isolates,all were found to synthesize gelatinase enzyme,73 isolates demonstrated amylolytic activity,38 isolates exhibited proteolytic and 63 isolates displayed urease ***,56 isolates exhibited excellent DNase activity and 71 isolates revealed positive for l-asparaginase *** our recognition,11 isolates exhibited constructive results in the production of 06 extracellular enzymes of industrial *** 103 isolates,48 isolates were confirmed by molecular level *** on the phylogenetic analysis,the isolates were categorized under the genera:Strep-tomyces,Nocardiopsis,Salinispora and Actinomadura.

关键词： Mangrove Actinobacteria Avicennia marina rhizopora mucronata Ceriops tagal

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