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

被引:10
作者
Bellec, Laure [1 ]
Le Du-Carre, Jessy [2 ]
Almeras, Fabrice [2 ]
Durand, Lucile [3 ]
Cambon-Bonavita, Marie-Anne [3 ]
Danion, Morgane [2 ]
Morin, Thierry [2 ]
机构
[1] Univ Bordeaux, UMR EPOC 5805 CNRS, Aquat Ecotoxicol Team, Pl Dr Peyneau, F-33120 Arcachon, France
[2] Agence Natl Securite Sanit Alimentat Environm & T, Lab Ploufragan Plouzane Niort, Unite Virol Immunol & Ecotoxicol Poissons, ANSES, F-29280 Plouzane, France
[3] Univ Brest, Lab Microbiol Environm Extremes, CNRS, IFREMER, F-29280 Plouzane, France
关键词
chronic exposition; co-occurrence network; dysbiosis; gill; glyphosate; microbiome; INTESTINAL MICROBIOME; DIVERSITY; GUT; COMMUNITY; MICROFLORA;
D O I
10.1093/femsec/fiac076
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
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 possess 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. This study evalutes the impact of a low chronical exposition of glyphosate on gill and gut microbiomes of rainbow trout.
引用
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页数:12
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