BELLEC, Laure; DU-CARRE, Jessy Le; ALMERAS, Fabrice; DURAND, Lucile; CAMBON-BONAVITA, Marie-Anne; DANION, Morgane; MORIN, Thierry

doi:10.1093/femsec/fiac076

Environnements et Paléoenvironnements OCéaniques [EPOC]

DU-CARRE, Jessy Le
Laboratoire de Ploufragan-Plouzané-Niort [ANSES]

ALMERAS, Fabrice

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FEMS Microbiology Ecology. 2022-06-24

Résumé en anglais

Abstract The herbicide glyphosate has been widely used in the past 40 years, under the assumption that side effects were minimal. In recent years, its impact on microbial compositions and potential indirect effects on plant, animal and human health have been strongly suspected. Glyphosate and co-formulates have been detected in various water sources, but our understanding of their potential effects on aquatic animals is still in its infancy compared with mammals. In this study, we investigated the effect of chronic exposure to an environmentally relevant concentration of glyphosate on bacterial communities of rainbow trout (Oncorhynchus mykiss). Gills, gut contents and gut epithelia were then analyzed by metabarcoding targeting the 16S rRNA gene. Our results revealed that rainbow trout has its own bacterial communities that differ from their surrounding habitats and possesses microbiomes specific to these three compartments. The glyphosate-based herbicide treatment significantly affected the gill microbiome, with a decrease in diversity. Glyphosate treatments disrupted microbial taxonomic composition and some bacteria seem to be sensitive to this environmental pollutant. Lastly, co-occurrence networks showed that microbial interactions in gills tended to decrease with chemical exposure. These results demonstrate that glyphosate could affect microbiota associated with aquaculture fish.< Réduire

Mots clés en anglais

chronic exposition

co-occurrence network

dysbiosis

gill

glyphosate

microbiome

URI

https://oskar-bordeaux.fr/handle/20.500.12278/171647

DOI

http://dx.doi.org/10.1093/femsec/fiac076

Unités de recherche

EPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805

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Glyphosate-based herbicide exposure: effects on gill microbiota of rainbow trout (Oncorhynchus mykiss) and the aquatic bacterial ecosystem

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Résumé en anglais

Mots clés en anglais

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