Rev. biol. mar. oceanogr. 50(2): 375-381Nota Científica
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Actividad inhibitoria del sobrenadante de la bacteria Antártica Pseudomonas sp. M19B en la formación de biopelículas de Flavobacterium psychrophilum 19749
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Arely Leyton1, Homero Urrutia1, José Miguel Vidal1, Mery de la Fuente5,6, Manuel Alarcón1, Germán Aroca3, Gerardo González-Rocha4 y Katherine Sossa1,2
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1Laboratorio de Biopelículas y Microbiología Ambiental, Centro de Biotecnología, Universidad de Concepción, Barrio Universitario s/n, Concepción, Chile
2Facultad de Ciencias Forestales, Universidad de Concepción, Victoria 631, Barrio Universitario, Concepción, Chile
3Facultad de Ingeniería Bioquímica, Universidad de Valparaíso, Av. Brasil Nº 2147, Valparaíso, Chile
4Laboratorio de Investigación en Agentes Antibacterianos, Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
5Laboratorio de Genómica y Biotecnología Aplicada, Departamento de Ingeniería Ambiental y Recursos Naturales, Facultad de Ingeniería, Universidad Católica de la Santísima Concepción, Alonso de Rivera 2850, Concepción, Chile
6Departamento de Ciencias Biológicas y Químicas, Facultad de Ciencia, Universidad San Sebastián, General Cruz 1577, Concepción, Chile
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Flavobacterium psyhrophilum affects farmed salmon and trout worldwide and is the etiological agent of bacterial cold water disease. The treatment of this disease is made with antibiotics. The emergence of resistant strains and its ability to form biofilms have increased the resistance to antibiotics. Considering the diverse bioactivity of Antarctic bacteria, we evaluated the inhibitory effect of compounds secreted by Antarctic bacterial strains on the biofilm formation of F. psychrophilum 19749. 26.9% of the Antarctic bacterial isolates inhibited strongly the biofilm, the greatest effect was shown by M19B. Proteins (48-56 kDa) secreted by M19B may be related to the inhibition of the biofilm formation of F. psychrophilum 19749.
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Key words: Flavobacterium psychrophilum, biofilms, antarctic bacteria, inhibition |
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