INIBIOMA   20415
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y MEDIOAMBIENTE
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Isolation of actinomycetes associated to a marine sediment from coastal plain of Buenos Aires (Argentina) and their preliminar characterization
Autor/es:
SOLANS M.; BERNASCONI E.
Lugar:
Mar del Plata
Reunión:
Congreso; XVIII Congreso Latinoamericano de Ciencias del Mar (COLACMAR); 2019
Institución organizadora:
Universidad Nacional de Mar del Plata
Resumen:
Actinomycetes are filamentous bacteria (Gram-positive, Actinobacteria) with multiple metabolic capacities, being producers of several bioactive compounds. In recent years, the search for microorganisms with biotechnological potential has been reoriented towards poorly studied environments such as sediments of rivers, lakes and oceans (Yang and Song, 2018). Specifically marine sediments can be a source of Actinomycetes that play important ecosystem services such as attenuation of impacted environments. Therefore, we isolated filamentous bacteria from marine sediments collected in East sector of the province of Buenos Aires (Argentina) corresponding to a marsh environment in the Samborombón Bay. Serial dilutions (1:10 - 1: 10,000) of the samples were spread on plates containing artificial soil agar to actinomycetes isolation (Vobis, 1992). These plates were incubated at 28 °C for 2-3 weeks until colony development. Several actinomycetes were isolated and characterized through morphological and physiological features according to Shirling and Gottlieb (1966), including pigmentation of the mycelium, the differentiation of aerial mycelium, the morphology of the spores chains, and the utilization of starch and casein. Eleven isolates were obtained, being most of them able to degrade starch. These preliminary results are promising in the bioprospecting of native actinomycetes from marine sediments that must be still identified and evaluated as potential producers of bioactive metabolites. However, these results deserve further study.