FN Archimer Export Format PT J TI Colonization of polystyrene microparticles by Vibrio crassostreae: light and electron microscopic investigation BT AF FOULON, Valentin LE ROUX, Frederique LAMBERT, Christophe HUVET, Arnaud SOUDANT, Philippe PAUL-PONT, Ika AS 1:1;2:2,3;3:1;4:4;5:1;6:1; FF 1:;2:PDG-RBE-PFOM;3:;4:PDG-RBE-PFOM-PI;5:;6:; C1 Inst Univ Europeen Mer, UMR CNRS UBO IRD Ifremer 6539, Lab Sci Environm Marin LEMAR, Technopole Brest Iroise, Rue Dumont Urville, F-29280 Plouzane, France. Ifremer, Unite Physiol Fonct Organismes Marins, ZI Pointe Diable, CS 10070, F-29280 Plouzane, France. UPMC Paris 06, Sorbonne Univ, CNRS, UMR 8227,Integrat Biol Marine Models,Stn Biol Ros, CS 90074, F-29688 Roscoff, France. Ctr Bretagne, ZI Pointe Diable, UMR UBO CNRS IRD Ifremer 6539, Ifremer,Lab Sci Environm Marin LEMAR, CS 10070, F-29280 Plouzane, France. C2 UBO, FRANCE IFREMER, FRANCE UNIV PARIS 06, FRANCE IFREMER, FRANCE SI ROSCOFF BREST SE PDG-RBE-PFOM PDG-RBE-PFOM-PI UM LEMAR IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 6.198 TC 89 UR https://archimer.ifremer.fr/doc/00351/46210/45908.pdf LA English DT Article AB 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. PY 2016 PD OCT SO Environmental Science & Technology SN 0013-936X PU Amer Chemical Soc VL 50 IS 20 UT 000385907200025 BP 10988 EP 10996 DI 10.1021/acs.est.6b02720 ID 46210 ER EF