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Antibacterial Activity of Heterotrophic Endophytes from Karangkadu Mangrove Ecosystem, India

Author(s): Sundaram Ravikumar1, Samuel Jacob Inbaneson1, Muthu Uthiraselvam2, Ramakrishnan Kaleeswari2, Andy Ramu3, Margaret Beula Banerjee4 and Jayaprakasham Rajasekar5

Journal: Journal of Pharmacy Research
ISSN 0974-6943

Volume: 4;
Issue: 1;
Start page: 195;
Date: 2011;
Original page

Keywords: Antibacterial activity | Cross streak assay | Disc diffusion assay | Endophytes | Halophytes.

A total of 17 endophytic heterotrophic bacteria were isolated from the leaves of five different halophytes from Karangkadu mangrove ecosystem along Palk Strait, Tamil Nadu, India. The percentage occurrence of Gram negative strains is higher than Gram positive strains. Eight strains were showed broad spectrum of activityagainst tested antibiotic resistant pathogens (n=3), urinary tract infectious pathogens (n=3) and eye pathogens (n=7). Among them, THB12 exhibited higher inhibitory activity (14±1.31 mm) against Pseudomonas sp. of urinary tract infectious pathogen. It’s concluded from present the study that, the endophytic bacteria isolated from the mangrove halophytes of Karangkadu mangrove ecosystem showing potential broad spectrum antibacterial activity.
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