Abstract
Marine bacteria have been recognized as an important and untapped resource for novel bioactive compounds. In the present study the antagonistic activity of marine bacteria was investigated. The selected Pseudoalteromonas tunicata showed a very broad range of antagonistic activity against many pathogenic bacteria and fungi. The antagonistic strains were also tested for the production of exo-enzymatic activities, 83% of the selected marine bacterial strains produced proteases except Pseudoalteromonas denitificans andPseudoalteromonas piscicida. Lipase activity was produced by Pseudoalteromonas aliena, Pseudoalteromonas aurantia, Pseudoalteromonas tunicata andPseudoalteromonas citrea strains. The P. tunicata strain isolated in the present study seems to have potential antifungal and antimicrobial activity against most of the human bacterial pathogens and phytopathogenic fungi. Thus, the marine bacterial strain P. tunicata was having the potential of producing bioactive compounds. Key words: Antagonistic activity, marine bacteria, human pathogens, enzymatic activities, bioactive compounds.
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