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Antimicrobial activity of endophytic fungi isolated from the mangrove plant Sonneratia apetala (Buch.-Ham) from the Sundarbans mangrove forest
Endophytic fungi reside in the intercellular space of plant nourished by the plant. In return, they provide bioactive molecules which can play critical roles on plant defense system. Fifty six endophytes were isolated from the leaves, root, bark and fruits of Sonneratia apetala , a pioneer mangrove...
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Published in: | Advances in traditional medicine (Online) 2020, 20(3), , pp.419-425 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Endophytic fungi reside in the intercellular space of plant nourished by the plant. In return, they provide bioactive molecules which can play critical roles on plant defense system. Fifty six endophytes were isolated from the leaves, root, bark and fruits of
Sonneratia apetala
, a pioneer mangrove plant in the Sundarbans, Bangladesh. A total of 56 isolates were obtained and 12 different species within 8 genera were identified using morphological and molecular characteristics. Antimicrobial activity of ethyl acetate (EtOAc) and methanolic (MeOH) extracts of these 12 different species were analyzed by resazurin assay and the minimum inhibitory concentrations (MICs) were determined. The fungal extracts showed antimicrobial activities against more than one tested bacterium or fungus among 5 human pathogenic microbes, i.e.
Escherichia coli
NCTC 12241,
Staphylococcus aureus
NCTC 12981,
Micrococcus lutus
NCTC 7508,
Pseudomonas aeruginosa
NCTC 7508 and
Candida albicans
ATCC 90028. Overall, methanolic extracts showed greater activity than that of ethyl acetate extracts. Of the isolates identified,
Colletotrichum gloeosporioides
,
Aspergillus niger
and
Fusarium equiseti
were the most active isolates and showed activity against microorganisms under investigation. Methanolic extracts of
C. gloeosporioides
and
A. niger
showed the lowest MIC (0.0024 mg/mL) against
P. aeruginosa
. The study indicates that endophytic fungi isolated from
S. apetala
species possess potential antimicrobial properties, which could be further investigated. |
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ISSN: | 2662-4052 2662-4060 |
DOI: | 10.1007/s13596-019-00422-9 |