Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish
Cyanobacteria have garnered attention as a prospective source of natural and sustainable antibiotics due to their diverse secondary bioactive compounds. Phenolic extracts of indigenous freshwater and marine Oscillatoria sp. were utilized to assess their antibacterial activity through the disk diffus...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Aquaculture Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352513425000407 |
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| author | Jannatul Nayeem Sumit Kanti Dey Proma Dey Mohammed Abdullah Ayoun Dipa Debi Mohammed Nurul Absar Khan Helena Khatoon |
| author_facet | Jannatul Nayeem Sumit Kanti Dey Proma Dey Mohammed Abdullah Ayoun Dipa Debi Mohammed Nurul Absar Khan Helena Khatoon |
| author_sort | Jannatul Nayeem |
| collection | DOAJ |
| description | Cyanobacteria have garnered attention as a prospective source of natural and sustainable antibiotics due to their diverse secondary bioactive compounds. Phenolic extracts of indigenous freshwater and marine Oscillatoria sp. were utilized to assess their antibacterial activity through the disk diffusion technique. Three gram-positive bacteria such as Staphylococcus sp.1,2 and Streptococcus sp. and nine gram-negative bacteria including Vibrio sp.1,2,3, Escherichia coli, Salmonella sp., Shigella sp., Aeromonas sp., Pseudomonas sp.1,2 was isolated from diseased marine fish and shellfish for the antibacterial activity assessment. Filamentous Oscillatoria sp. indicated higher antibiotic activity than planktonic one. Gram-positive bacteria showed higher susceptibility to phenol compared to gram-negative bacteria. Filamentous Oscillatoria sp. showed the highest inhibition zone of 34.06 ± 0.08 mm against Staphylococcus sp., while planktonic Oscillatoria sp. showed a lower inhibition zone of 17.11 ± 0.18 mm against Pseudomonas sp. A highest activity index (AI) value of 2.10 ± 0.03 was observed for filamentous Oscillatoria sp. against Staphylococcus sp., whereas a significantly lower AI value of 1.00 ± 0.01 was obtained for planktonic Oscillatoria sp. against Pseudomonas sp. Thus, Oscillatoria spp. contain potential antibacterial substances that facilitate detailed analysis of Oscillatoria spp. bioactive compounds for creating novel antibiotics and benefitting both aquaculture and pharmaceutical industries. |
| format | Article |
| id | doaj-art-49a677547ed84a379cc1fcb7845e47a5 |
| institution | Kabale University |
| issn | 2352-5134 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Aquaculture Reports |
| spelling | doaj-art-49a677547ed84a379cc1fcb7845e47a52025-02-02T05:27:42ZengElsevierAquaculture Reports2352-51342025-04-0141102654Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfishJannatul Nayeem0Sumit Kanti Dey1Proma Dey2Mohammed Abdullah Ayoun3Dipa Debi4Mohammed Nurul Absar Khan5Helena Khatoon6Department of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Fishing and Post-Harvest Technology, Chattogram Veterinary and Animal Sciences University, Chattogram, BangladeshDepartment of Aquaculture, Faculty of Fisheries, Chattogram Veterinary and Animal Sciences University, Chattogram, Bangladesh; Corresponding author.Cyanobacteria have garnered attention as a prospective source of natural and sustainable antibiotics due to their diverse secondary bioactive compounds. Phenolic extracts of indigenous freshwater and marine Oscillatoria sp. were utilized to assess their antibacterial activity through the disk diffusion technique. Three gram-positive bacteria such as Staphylococcus sp.1,2 and Streptococcus sp. and nine gram-negative bacteria including Vibrio sp.1,2,3, Escherichia coli, Salmonella sp., Shigella sp., Aeromonas sp., Pseudomonas sp.1,2 was isolated from diseased marine fish and shellfish for the antibacterial activity assessment. Filamentous Oscillatoria sp. indicated higher antibiotic activity than planktonic one. Gram-positive bacteria showed higher susceptibility to phenol compared to gram-negative bacteria. Filamentous Oscillatoria sp. showed the highest inhibition zone of 34.06 ± 0.08 mm against Staphylococcus sp., while planktonic Oscillatoria sp. showed a lower inhibition zone of 17.11 ± 0.18 mm against Pseudomonas sp. A highest activity index (AI) value of 2.10 ± 0.03 was observed for filamentous Oscillatoria sp. against Staphylococcus sp., whereas a significantly lower AI value of 1.00 ± 0.01 was obtained for planktonic Oscillatoria sp. against Pseudomonas sp. Thus, Oscillatoria spp. contain potential antibacterial substances that facilitate detailed analysis of Oscillatoria spp. bioactive compounds for creating novel antibiotics and benefitting both aquaculture and pharmaceutical industries.http://www.sciencedirect.com/science/article/pii/S2352513425000407CyanobacteriaOscillatoriaBacteriaIsolationAntimicrobial activityActivity index |
| spellingShingle | Jannatul Nayeem Sumit Kanti Dey Proma Dey Mohammed Abdullah Ayoun Dipa Debi Mohammed Nurul Absar Khan Helena Khatoon Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish Aquaculture Reports Cyanobacteria Oscillatoria Bacteria Isolation Antimicrobial activity Activity index |
| title | Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish |
| title_full | Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish |
| title_fullStr | Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish |
| title_full_unstemmed | Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish |
| title_short | Antimicrobial activity of indigenous Oscillatoria spp. against prevalent bacterial diseases in fish and shellfish |
| title_sort | antimicrobial activity of indigenous oscillatoria spp against prevalent bacterial diseases in fish and shellfish |
| topic | Cyanobacteria Oscillatoria Bacteria Isolation Antimicrobial activity Activity index |
| url | http://www.sciencedirect.com/science/article/pii/S2352513425000407 |
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