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Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
Bioactive potential of Streptomyces against fish and shellfish pathogens.
D Selvakumar1, K Arun, S Suguna
1Department of Aquatic Biology and Fisheries, University of Kerala, Kariavattom campus, Trivandrum, 695 581, Kerala, India.
Iranian Journal of Microbiology
|February 21, 2012
Summary
Marine sponges yielded seven Streptomyces strains with antibacterial potential against fish and shellfish pathogens. These Streptomyces strains produce bioactive compounds effective against common aquatic disease-causing bacteria like Aeromonas hydrophila.
Area of Science:
- Marine microbiology
- Antimicrobial discovery
- Aquaculture health
Background:
- Marine sponges harbor diverse microbial communities, including Streptomyces.
- These microorganisms are a promising source of novel bioactive compounds.
Purpose of the Study:
- To isolate and characterize Streptomyces associated with marine sponges.
- To evaluate the bioactive potential of these isolates against fish and shellfish pathogens.
Main Methods:
- Isolation of Streptomyces from marine sponges using ISP media.
- Characterization of isolates based on morphological, physiological, and biochemical properties.
- Screening of crude extracts for antimicrobial activity against Aeromonas hydrophila, Serratia sp., and Vibrio spp. using diffusion bioassays.
Main Results:
- Ninety-four Streptomyces isolates were obtained; seven showed significant antagonism.
- Antibacterial activity was confirmed against Aeromonas hydrophila, Serratia sp., and Vibrio spp.
- UV-Vis spectrophotometry and TLC analysis indicated the presence of polyene substances.
Conclusions:
- Seven Streptomyces strains isolated from marine sponges exhibit promising antibacterial properties.
- These strains are potential sources for developing new treatments against fish and shellfish pathogens.
- Further research into the identified polyene substances is warranted.
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