Early and differential bacterial colonization on microplastics deployed into the effluents of wastewater treatment plants
EntityUAM. Departamento de Biología
10.1016/j.scitotenv.2020.143832Science of the Total Environment 757 (2021): 143832
ISSN0048-9697 (print); 1879-1026 (online)
Funded byFinancial support was provided by the Spanish Ministry of Economy and Competitiveness (CTM2016-74927-C2-1/2-R)
ProjectGobierno de España. CTM2016-74927-C2-1-R; Gobierno de España. CTM2016-74927-C2-2-R
SubjectsAntibiotic resistance genes; Bacterial communities; Early colonization; Microplastics; Wastewater treatment plant effluents; Biología y Biomedicina / Biología
NoteTítulo del Post Print: Early and differential bacterial colonization on microplastics
Rights© 2020 Elsevier B.V.
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Microbial colonization of microplastics (MPs) in aquatic ecosystems is a well-known phenomenon; however, there is insufficient knowledge of the early colonization phase. Wastewater treatment plant (WWTP) effluents have been proposed as important pathways for MPs entry and transport in aquatic environments and are hotspots of bacterial pathogens and antibiotic resistance genes (ARGs). This study aimed at characterizing bacterial communities in the early stage of biofilm formation on seven different types of MPs deployed in two different WWTPs effluents as well as measuring the relative abundance of two ARGs (sulI and tetM) on the tested MPs. Illumina Miseq sequencing of the 16S rRNA showed significant higher diversity of bacteria on MPs in comparison with free-living bacteria in the WWTP effluents. β-diversity analysis showed that the in situ environment (sampling site) and hydrophobicity, to a lesser extent, had a role in the early bacterial colonization phase. An early colonization phase MPs-core microbiome could be identified. Furthermore, specific core microbiomes for each type of polymer suggested that each type might select early attachment of bacteria. Although the tested WWTP effluent waters contained antibiotic resistant bacteria (ARBs) harboring the sulI and tetM ARGs, MPs concentrated ARBs harboring the sulI gene but not tetM. These results highlight the relevance of the early attachment phase in the development of bacterial biofilms on different types of MP polymers and the role that different types of polymers might have facilitating the attachment of specific bacteria, some of which might carry ARGs
Google Scholar:Martínez-Campos, Sergio - González-Pleiter, Miguel - Fernández Piñas, Francisca - Rosal, Roberto - Leganés, Francisco
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