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Growth Inhibition of fish Pathogens by Antagonistic Actinomycetes Isolated from Mangrove environment

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Relation http://eprints.cmfri.org.in/4599/
 
Title Growth Inhibition of fish Pathogens by Antagonistic Actinomycetes Isolated from Mangrove environment
 
Creator Rathnakala, R
Chandrika, V
 
Subject Fish Pathology
 
Description Solvent extracts of 6 strains actinomycetes isolated from mangrove environment were found to inhibit the growth of fish bacterial pathogens. filamentous and
non-filamentous fungi. Out of the 104 actinomycetes tested 56% of the isolates exhibited antagonistic effect towards gram-negative bacteria and 35.6% towards
gram-positiveb acteria.The concentrationsrequired to bring about 100% inhibition of filamentous fungi was 500-760µg crude extracts. The same concentration
produced inhibition zone in bacteria ranging from 2mm to IOmm in diameter against various test pathogens. Antibiograni of the actinomycetes against test
pathogens showed two extreme zones (category I and Category X) of inhibition by most of the antagonistic actinomycetes. The results suggest that the crude
extract of these antagonistic actinomycetes possesses both antibacterial and antifungal propcrties. Therefore the extract promises to be a potential source of
antibiotics against fish bacterial pathogens.
 
Date 1996
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/4599/1/22.pdf
Rathnakala, R and Chandrika, V (1996) Growth Inhibition of fish Pathogens by Antagonistic Actinomycetes Isolated from Mangrove environment. In: The Fourth Indian Fisheries Forum, Proceedings, 24-28 November, 1996, Kochi.