Antagonistic Activity of a Marine Bacterium Pseudoalteromonas luteoviotacea TAB 4.2 Associated with Coral Acropora sp.

Radjasa, Ocky Karna and Martens, Torben and Grossart, Hans-Peter and Brinkoff, Thorsten and Sabdono, Agus and Simon, Meinhard (2007) Antagonistic Activity of a Marine Bacterium Pseudoalteromonas luteoviotacea TAB 4.2 Associated with Coral Acropora sp. Journal of Biological Sciences , 7 (2). pp. 239-246. ISSN 1727-3048

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Abstract

A coral-associated bacterium was successfully screened for secondary metabolite production based on biological activity and PCR amplification of the non-ribosomal peptide synthetase (NRPS) gene and was identified as closely related to Pseudoatteromonas tuteoviotacea based on its 16S rDNA. The bacterium was found to inhibit the growth of other coral-associated bacteria and pathogenic bacteria. To characterize the inhibiting metabolite, a 279 bp long DNA fragment was obtained and the deduced amino acid sequence showed conserved signature regions for peptidc synthctases and revealed a high similarity to NosD (40% identity), a multifunctional peptide synthetase from Nostoc sp. G5V224 and NdaB (44% identity), a peptide synthetase module of Nodutaria spumigena. To estimate the possible role of secondary metabolites, analyses on the quantitative proportion of Pseudoatteromonas was carried out. The results revealed that Pseudottermonas group was indeed present within surfaces of coral Acropora sp

Item Type:Article
Uncontrolled Keywords:Coral-associated bacterium. antimonistic activity. Pseudoatteromonas. Acronora so.
Subjects:G Geography. Anthropology. Recreation > GC Oceanography
Divisions:Faculty of Fisheries and Marine Sciences > Department of Marine Science
ID Code:360
Deposited By:Mr. Sugeng Priyanto
Deposited On:24 Jul 2009 10:02
Last Modified:29 Jul 2009 12:54

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