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      ACTIVIDAD ANTAGÓNICA ENTRE BACTERIAS EPIBIÓTICAS AISLADAS DE ESPONJAS MARINAS DEL CARIBE COLOMBIANO Y SU RELACIÓN CON LA MACROEPIBIOSIS Translated title: ANTAGONISTIC ACTIVITY BETWEEN EPIBIOTIC BACTERIA ISOLATED FROM MARINE SPONGES OF THE COLOMBIAN CARIBBEAN AND ITS RELATIONSHIP WITH THE MACROFOULING

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          Abstract

          Las superficies sumergidas en el mar son densamente colonizadas por bacterias y sus interacciones, tales como la inhibición del crecimiento, son importantes para determinar el desarrollo de comunidades bacterianas, como también de posteriores etapas de la macroepibiosis. Para determinar el potencial de interacción entre bacterias de las biopelículas de esponjas, se realizaron ensayos de actividad de inhibición in vitro de crecimiento entre cepas bacterianas aisladas de superficies con diferente grado de macroepibiosis, de las esponjas Aplysina insularis (limpia), Aplysina lacunosa (con macroepibiosis) y de la superficie calcárea de la concha del molusco bivalvo Donax sp. El porcentaje total de interacción antagónica entre estas cepas bacterianas fue del 64 %; las cepas bacterianas aisladas de superficies limpias inhibieron el crecimiento de cepas provenientes de superficies muy colonizadas en proporciones cercanas a 1:1. Cepas de superficies no colonizadas tuvieron mayor frecuencia de interacciones antagónicas. Se propone la interacción bacteriana antagónica como posible mecanismo de regulación del crecimiento poblacional y de esta forma del desarrollo de etapas subsecuentes de la macroepibiosis.

          Translated abstract

          Surfaces submerged in the sea are densely colonized by bacteria, and inter-specific interactions such as growth inhibition are important determinants of the development of bacterial communities, as well as of later phases of macrofouling. To determine the potential interactions among biofilm bacteria from sponges we carried out in vitro growth inhibition tests between bacterial strains isolated from surfaces with various degrees of macrofouling, from the sponges Aplysina insularis (clean), Aplysina lacunosa (fouled), and from the calcareous surface of the bivalve mollusk Donax sp. The total percentage of antagonistic interactions among these strains was 64 %; strains isolated from clean surfaces inhibited the growth of strains from well-colonized surfaces in a 1:1 ratio. Strains from clean surfaces had a higher frequency of antagonistic interactions. We propose bacterial antagonistic interaction as a possible mechanism of population growth regulation and, consequently, of the development of subsequent phases of macrofouling.

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          Listening in on bacteria: acyl-homoserine lactone signalling.

          Bacterial cell-to-cell signalling has emerged as a new area in microbiology. Individual bacterial cells communicate with each other and co-ordinate group activities. Although a lot of detail is known about the mechanisms of a few well-characterized bacterial communication systems, other systems have been discovered only recently. Bacterial intercellular communication has become a target for the development of new anti-virulence drugs.
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            Marine epibiosis. I. Fouling and antifouling: some basic aspects

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                mar
                Boletín de Investigaciones Marinas y Costeras - INVEMAR
                Bol. Invest. Mar. Cost.
                INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS -JOSE BENITO VIVES DE ANDRÉIS- (INVEMAR) (Santa Marta, Magdalena, Colombia )
                0122-9761
                January 2009
                : 38
                : 1
                : 25-38
                Affiliations
                [02] Santa Marta orgnameInstituto de Investigaciones Marinas y Costeras-INVEMAR Colombia diego.gil@ 123456invemar.org.co
                [01] Santa Marta orgnameUniversidad Nacional de Colombia orgdiv1Departamento de Biología Colombia szea@ 123456invemar.org.co
                Article
                S0122-97612009000100002
                a14a99b3-15f3-4dfc-a43f-49bc6ad8b8df

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 30 September 2007
                : 10 February 2009
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 44, Pages: 14
                Product

                SciELO Colombia

                Categories
                Artículos de Investigación

                Epibiosis,Marine sponges,Antagonistic interaction,Epibiotic bacteria,Esponjas marinas,Interacciones antagónicas,Bacterias epibióticas

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