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Provedor de dados:  ArchiMer
País:  France
Título:  Colonization of polystyrene microparticles by Vibrio crassostreae: light and electron microscopic investigation
Autores:  Foulon, Valentin
Le Roux, Frederique
Lambert, Christophe
Huvet, Arnaud
Soudant, Philippe
Paul-pont, Ika
Data:  2016-10
Ano:  2016
Resumo:  Microplastics collected at sea harbour a high diversity of microorganisms including some Vibrio genus members, raising questions about the role of microplastics as a novel ecological niche for potentially pathogenic microorganisms. In the present study we investigated the adhesion dynamics of Vibrio crassostreae on polystyrene microparticles (micro-PS) using electronic and fluorescence microscopy techniques. Micro-PS were incubated with bacteria in different media (Zobell culture medium and artificial seawater) with or without natural marine aggregates. The highest percentage of colonised particles (38-100%) was observed in Zobell culture medium, which may be related to nutrient availability for production of pili and exopolysaccharide adhesion structures. A longer bacterial attachment (6 days) was observed on irregular micro-PS compared to smooth particles (<10h) but complete decolonisation of all particles eventually occurred. The presence of natural marine agreggates around micro-PS led to substantial and perennial colonisation featuring monospecific biofilms at the surface of the aggregates. These exploratory results suggest that V. crassostreae may be a secondary coloniser of micro-PS, requiring a multi-species community to form a durable adhesion phenotype. Temporal assessment of microbial colonisation on microplastics at sea using imaging and omics approaches are further indicated to better understand the microplastics colonisation dynamics and species assemblages.
Tipo:  Text
Idioma:  Inglês

Editor:  Amer Chemical Soc
Formato:  application/pdf
Fonte:  Environmental Science & Technology (0013-936X) (Amer Chemical Soc), 2016-10 , Vol. 50 , N. 20 , P. 10988-10996
Direitos:  2016 American Chemical Society


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