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Marine Derived Fungi of Peninsular Malaysia-a Biochemical Perspective


Paper Type 
Contributed Paper
Title 
Marine Derived Fungi of Peninsular Malaysia-a Biochemical Perspective
Author 
Audra Shaleena Paliany, Yasodha Sivasothy, Khalijah Awang, Mohammed Rizman-Idid and Siti Aisyah Alia
Email 
saa@um.edu.my
Abstract:
 In an effort to tap into natural products harboured by marine derived fungi in Malaysia, selected marine derived endophytic andmanglicolous fungi from the coastlines of Peninsular Malaysia were investigated for their antibacterial protential. Forty-one strains were isolated from marine associated plants, comprised and comprised 12 and 19 endophytic strains from Vitex rotundifolia and Ipomoea pes-caprae respectively, while 10 manglicolous strains were from decaying mangrove wood collected in Peninsular Malaysia. In preliminary experiments, a plug assay was employed to study the antibacterial activities of all 41 fungi isolates. Fifteen of the endophytic isolates and nine of the manglicolous isolates displayed antibacterial activities against at least one of the test bacteria. Based on the plug assay, the endophytic fungi from Ipomoea pes-caprae were shown to display higher antibacterial potential in comparison to the endophytic fungi from Vitexrotundifolia. In particular, Minimidochium sp. And Bipolaris sp. (ISB0014) displayed antibacterial activities against 5 or more test bacteria. Potential fungi isolates with good antibacterial activities were further analysed through a broth microdilution assay. Minimidochium sp. And Dyfrolomyces rhizophorae exhibited promising antibacterial activities with minimum inhibitory concentrationsnot higher than 0.5 mg/ml. Bioactivity-guided and fractionation of D. rhizophorae extracts resulted in the isolation of fatty acids, palmitic and linoleic acid. Though ubiquitous in nature, Linoleic acid is known as an essential health supplement and both fatty acids are used as biodiesel replacing conventional fuels.

 

Start & End Page 
894 - 909
Received Date 
2013-12-12
Revised Date 
Accepted Date 
2014-02-15
Full Text 
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Correspondence & Author Name 
Keyword 
Natural products, antibiotics, manglicolous fungi, endophytic fungi, bioactivity
Volume 
Vol.41 No.4 (SPECIAL ISSUE 1)
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