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Evaluation of antimicrobial and antagonistic activities of endophytic bacterial isolates of an ethnomedicinal plant of Manipur, Shamba (Oroxylum indicum)
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In the present study, a total of 57 endophytic bacterial isolates were obtained from leaf, stem and root samples of Oroxylum indicum using Nutrient Agar (NA) and Starch Casein Nitrate Agar (SCNA). The isolates were screened for antibacterial activity against a panel of test bacterial pathogens viz. Micrococcus luteus (MTCC 106), Bacillus subtilis (MTCC 121) and Escherichia coli (MTCC 739) and also tested for antagonistic activity against fungal pathogen viz. Fusarium oxysporium (MTCC 287). Among 57 isolates, 5 isolates (OInL1, OInL6, OInL7, OInL11 and OInL14), 12 isolates (OInL12, OInL13, OInS1, OInS2, OInS13, OInS15, OInS19, OInS20, OInR8, OInR12, OInR13 and OInR15) and 10 isolates (OInL1, OInL4, OInL7, OInL12, OInS15, OInS20, OInR13, OInR15, OInR16 and OInR17) exhibited antibacterial activity against Micrococcus luteus (MTCC 106), Bacillus subtilis (MTCC 121) and Escherichia coli (MTCC 739) respectively in secondary antimicrobial screening using Kirby Bauer method. Furthermore, among 57 isolates, 9 (OInL6, OInL7, OInL11, OInL12, OInL14, OInR13, OInR15, OInR16 and OInR17) showed antagonistic activity against Fusarium oxysporium (MTCC 287).
Title: Evaluation of antimicrobial and antagonistic activities of endophytic bacterial isolates of
an ethnomedicinal plant of Manipur, Shamba (Oroxylum indicum)
Description:
In the present study, a total of 57 endophytic bacterial isolates were obtained from leaf, stem and root samples of Oroxylum indicum using Nutrient Agar (NA) and Starch Casein Nitrate Agar (SCNA).
The isolates were screened for antibacterial activity against a panel of test bacterial pathogens viz.
Micrococcus luteus (MTCC 106), Bacillus subtilis (MTCC 121) and Escherichia coli (MTCC 739) and also tested for antagonistic activity against fungal pathogen viz.
Fusarium oxysporium (MTCC 287).
Among 57 isolates, 5 isolates (OInL1, OInL6, OInL7, OInL11 and OInL14), 12 isolates (OInL12, OInL13, OInS1, OInS2, OInS13, OInS15, OInS19, OInS20, OInR8, OInR12, OInR13 and OInR15) and 10 isolates (OInL1, OInL4, OInL7, OInL12, OInS15, OInS20, OInR13, OInR15, OInR16 and OInR17) exhibited antibacterial activity against Micrococcus luteus (MTCC 106), Bacillus subtilis (MTCC 121) and Escherichia coli (MTCC 739) respectively in secondary antimicrobial screening using Kirby Bauer method.
Furthermore, among 57 isolates, 9 (OInL6, OInL7, OInL11, OInL12, OInL14, OInR13, OInR15, OInR16 and OInR17) showed antagonistic activity against Fusarium oxysporium (MTCC 287).
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