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Open AccessJournal ArticleDOI

Isolation and Characterization of a Novel Actinomycete Isolated from Marine Sediments and Its Antibacterial Activity against Fish Pathogens

Haimanti Mondal, +1 more
- 01 Nov 2022 - 
- Vol. 11, Iss: 11, pp 1546-1546
TLDR
In this paper , an attempt was made to isolate Actinomycetes from marine sediments in terms of their ability to produce several novel bioactive compounds, which can be used as an alternative to antibiotics for treating several fish pathogens.
Abstract
Marine habitats are especially complex, with a varied diversity of living organisms. Marine organisms, while living in such intense conditions, have developed great physiological and metabolic potential to survive. This has led them to produce several potent metabolites, which their terrestrial counterparts are unable to produce. Over the past few years, marine Actinomycetes have been considered one of the most abundant sources of diverse and novel metabolites. In this work, an attempt was made to isolate Actinomycetes from marine sediments in terms of their ability to produce several novel bioactive compounds. A total of 16 different Actinomycete colonies were obtained from marine sediment samples. Among the 16 Actinomycete isolates, 2 isolates demonstrated in vitro antibacterial activity against Aeromonas hydrophila and Vibrio parahemolyticus. However, among them, only one isolate was found to have potent antibacterial activity, and hence, was taken for further analysis. This isolate was designated as Beijerinickia fluminensis VIT01. The bioactive components obtained were extracted and later subjected to Fourier transform infrared spectroscopy (FTIR) and gas chromatography–mass spectroscopy (GC-MS) analyses for identification. Several novel bioactive compounds were reported from the data obtained and were found to have potent antibacterial activity. Hence, they could be used as an alternative to antibiotics for treating several fish pathogens in the aquaculture industry.

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Identification of Antimicrobial Metabolites from the Egyptian Soil-Derived Amycolatopsis keratiniphila Revealed by Untargeted Metabolomics and Molecular Docking

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References
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Journal ArticleDOI

Widespread and persistent populations of a major new marine actinomycete taxon in ocean sediments.

TL;DR: This study presents the first evidence for the existence of widespread populations of obligate marine actinomycetes from ocean sediments, and suggests novelty at the genus level.
Journal ArticleDOI

Marine actinomycetes: an ongoing source of novel bioactive metabolites.

TL;DR: The ecological role of actinomycetes in the marine ecosystem is largely neglected and various assumptions meant there was little incentive to isolate marine strains for search and discovery of new drugs, but continued development of improved cultivation methods and molecular technologies for accessing the marine environment promises to provide access to this significant new source of chemical diversity.
Journal ArticleDOI

Pharmaceutically active secondary metabolites of marine actinobacteria.

TL;DR: An evaluation is made on the current status of research on marine actinobacteria yielding pharmaceutically active secondary metabolites, which may form the basis for synthesis of new drugs that could be used to combat resistant pathogens.
Journal ArticleDOI

Abyssomicins, inhibitors of the para-aminobenzoic acid pathway produced by the marine Verrucosispora strain AB-18-032.

TL;DR: A screening method was established to detect inhibitors of the biosynthetic pathways of aromatic amino acids and para-aminobenzoic acid, the precursor of folic acid, using an agar plate diffusion assay modified as an antagonism test, and a family of three novel polycyclic polyketides named as abyssomicins was isolated from a marine strain of Verrucosispora.
Journal ArticleDOI

Isolation and Characterization of Novel Marine-Derived Actinomycete Taxa Rich in Bioactive Metabolites

TL;DR: Biological activity testing of fermentation products from the new marine-derived actinomycetes revealed that several had activities against multidrug-resistant gram-positive pathogens, malignant cells, and vaccinia virus replication.
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The paper isolated a novel Actinomycete, Beijerinickia fluminensis VIT01, from marine sediments. Molecular characterization was done using FTIR and GC-MS, revealing potent antibacterial compounds.

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A novel Actinomycete, Beijerinickia fluminensis VIT01, was isolated from marine sediments. It exhibited potent antibacterial activity against fish pathogens, offering potential as an alternative to antibiotics in aquaculture.

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