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El Khoury S, Gauthier J, Mercier PL, Moïse S, Giovenazzo P, Derome N. Honeybee gut bacterial strain improved survival and gut microbiota homeostasis in Apis mellifera exposed in vivo to clothianidin. Microbiol Spectr 2024:e0057824. [PMID: 39189755 DOI: 10.1128/spectrum.00578-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 06/04/2024] [Indexed: 08/28/2024] Open
Abstract
Pesticides are causing honeybee mortality worldwide. Research carried out on honeybees indicates that application of pesticides has a significant impact on the core gut community, which ultimately leads to an increase in the growth of harmful pathogens. Disturbances caused by pesticides also affect the way bacterial members interact, which results in gut microbial dysbiosis. Administration of beneficial microbes has been previously demonstrated to be effective in treating or preventing disease in honeybees. The objective of this study was to measure under in vivo conditions the ability of two bacterial strains (the Enterobacter sp. and Pantoea sp.) isolated from honeybee gut to improve survival and mitigate gut microbiota dysbiosis in honeybees exposed to a sublethal clothianidin dose (0.1 ppb). Both gut bacterial strains were selected for their ability to degrade clothianidin in vitro regardless of their host-microbe interaction characteristics (e.g., beneficial, neutral, or harmful). To this end, we conducted cage trials on 4- to 6-day-old newly emerging honeybees. During microbial administration, we jointly monitored the taxonomic distribution and activity level of bacterial symbionts quantifying 16S rRNA transcripts. First, curative administration of the Pantoea sp. strain significantly improved the survival of clothianidin-exposed honeybees compared to sugar control bees (i.e., supplemented with sugar [1:1]). Second, curative administration of the Enterobacter sp. strain significantly mitigated the clothianidin-induced dysbiosis observed in the midgut structural network, but without improving survival. IMPORTANCE The present work suggests that administration of bacterial strains isolated from honeybee gut may promote recovery of gut microbiota homeostasis after prolonged clothianidin exposure, while improving survival. This study highlights that gut bacterial strains hold promise for developing efficient microbial formulations to mitigate environmental pesticide exposure in honeybee colonies.
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Affiliation(s)
- Sarah El Khoury
- Université Laval, Institut de Biologie Intégrative et des Systèmes (IBIS), Québec, Canada
- Département de Biologie, Université Laval, Québec, Canada
| | - Jeff Gauthier
- Université Laval, Institut de Biologie Intégrative et des Systèmes (IBIS), Québec, Canada
- Département de Biologie, Université Laval, Québec, Canada
| | - Pierre Luc Mercier
- Université Laval, Institut de Biologie Intégrative et des Systèmes (IBIS), Québec, Canada
- Département de Biologie, Université Laval, Québec, Canada
| | - Stéphane Moïse
- INRS, Institut National de la Recherche Scientifique, Québec, Canada
| | | | - Nicolas Derome
- Université Laval, Institut de Biologie Intégrative et des Systèmes (IBIS), Québec, Canada
- Département de Biologie, Université Laval, Québec, Canada
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Geervliet M, de Vries H, Jansen CA, Rutten VPMG, van Hees H, Wen C, Skovgaard K, Antonello G, Savelkoul HFJ, Smidt H, Tijhaar E, Wells JM. Effects of E scherichia coli Nissle 1917 on the Porcine Gut Microbiota, Intestinal Epithelium and Immune System in Early Life. Front Microbiol 2022; 13:842437. [PMID: 35283814 PMCID: PMC8914288 DOI: 10.3389/fmicb.2022.842437] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/01/2022] [Indexed: 12/22/2022] Open
Abstract
Early in life and particularly around weaning, piglets are susceptible to infections because of abrupt social, environmental, and dietary changes. Dietary interventions with probiotic bacteria have gained popularity because of the increased awareness of the direct link between diet and health. In this study, piglets received the probiotic strain Escherichia coli Nissle 1917 (EcN) or a control treatment perorally from day 2 after birth until 2 weeks post-weaning. To investigate spatio-temporal effects of EcN on the gut microbiota composition, intestinal epithelial gene expression and immune system, feces, digesta, blood, scraping material and mesenteric lymph node tissue were collected at different time points. In addition, oral vaccinations against Salmonella enterica serovar Typhimurium were administered on days 21 and 45 of the study to assess the immunocompetence. EcN-treated pigs showed a reduced diversity of taxa within the phylum Proteobacteria and a lower relative abundance of taxa within the genus Treponema during the pre-weaning period. Moreover, EcN induced T cell proliferation and Natural Killer cell activation in blood and enhanced IL-10 production in ex vivo stimulated mesenteric lymph node cells, the latter pointing toward a more regulatory or anti-inflammatory state of the local gut-associated immune system. These outcomes were primarily observed pre-weaning. No significant differences were observed between the treatment groups with regards to body weight, epithelial gene expression, and immune response upon vaccination. Differences observed during the post-weaning period between the treatment groups were modest. Overall, this study demonstrates that the pre-weaning period offers a 'window of opportunity' to modulate the porcine gut microbiota and immune system through dietary interventions such as EcN supplementation.
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Affiliation(s)
- Mirelle Geervliet
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Hugo de Vries
- Host-Microbe Interactomics Group, Wageningen University & Research, Wageningen, Netherlands
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Christine A. Jansen
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Victor P. M. G. Rutten
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Hubèrt van Hees
- Research and Development, Trouw Nutrition, Amersfoort, Netherlands
| | - Caifang Wen
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Kerstin Skovgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Giacomo Antonello
- Department of Cellular, Computational and Integrative Biology, University of Trento, Trento, Italy
| | - Huub F. J. Savelkoul
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, Netherlands
| | - Edwin Tijhaar
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, Netherlands
| | - Jerry M. Wells
- Host-Microbe Interactomics Group, Wageningen University & Research, Wageningen, Netherlands
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El Khoury S, Gauthier J, Bouslama S, Cheaib B, Giovenazzo P, Derome N. Dietary Contamination with a Neonicotinoid (Clothianidin) Gradient Triggers Specific Dysbiosis Signatures of Microbiota Activity along the Honeybee ( Apis mellifera) Digestive Tract. Microorganisms 2021; 9:microorganisms9112283. [PMID: 34835409 PMCID: PMC8619528 DOI: 10.3390/microorganisms9112283] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 12/14/2022] Open
Abstract
Pesticides are increasing honeybee (Apis mellifera) death rates globally. Clothianidin neonicotinoid appears to impair the microbe–immunity axis. We conducted cage experiments on newly emerged bees that were 4–6 days old and used a 16S rRNA metataxonomic approach to measure the impact of three sublethal clothianidin concentrations (0.1, 1 and 10 ppb) on survival, sucrose syrup consumption and gut microbiota community structure. Exposure to clothianidin significantly increased mortality in the three concentrations compared to controls. Interestingly, the lowest clothianidin concentration was associated with the highest mortality, and the medium concentration with the highest food intake. Exposure to clothianidin induced significant variation in the taxonomic distribution of gut microbiota activity. Co-abundance network analysis revealed local dysbiosis signatures specific to each gut section (midgut, ileum and rectum) were driven by specific taxa. Our findings confirm that exposure to clothianidin triggers a reshuffling of beneficial strains and/or potentially pathogenic taxa within the gut, suggesting a honeybee’s symbiotic defense systems’ disruption, such as resistance to microbial colonization. This study highlights the role of weak transcriptional activity taxa in maintaining a stable honeybee gut microbiota. Finally, the early detection of gut dysbiosis in honeybees is a promising biomarker in hive management for assessing the impact exposure to sublethal xenobiotics.
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Affiliation(s)
- Sarah El Khoury
- Department of Biology, Laval University, Québec, QC G1V 0A6, Canada; (S.E.K.); (J.G.); (S.B.); (P.G.)
- Institut de Biologie Intégrative et des Systèmes (IBIS), Laval University, Québec, QC G1V 0A6, Canada
| | - Jeff Gauthier
- Department of Biology, Laval University, Québec, QC G1V 0A6, Canada; (S.E.K.); (J.G.); (S.B.); (P.G.)
- Institut de Biologie Intégrative et des Systèmes (IBIS), Laval University, Québec, QC G1V 0A6, Canada
| | - Sidki Bouslama
- Department of Biology, Laval University, Québec, QC G1V 0A6, Canada; (S.E.K.); (J.G.); (S.B.); (P.G.)
- Institut de Biologie Intégrative et des Systèmes (IBIS), Laval University, Québec, QC G1V 0A6, Canada
| | - Bachar Cheaib
- Institute of Biodiversity, Animal Health & Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK;
| | - Pierre Giovenazzo
- Department of Biology, Laval University, Québec, QC G1V 0A6, Canada; (S.E.K.); (J.G.); (S.B.); (P.G.)
| | - Nicolas Derome
- Department of Biology, Laval University, Québec, QC G1V 0A6, Canada; (S.E.K.); (J.G.); (S.B.); (P.G.)
- Institut de Biologie Intégrative et des Systèmes (IBIS), Laval University, Québec, QC G1V 0A6, Canada
- Correspondence:
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Zhou S, Luo R, Gong G, Wang Y, Gesang Z, Wang K, Xu Z, Suolang S. Characterization of Metagenome-Assembled Genomes and Carbohydrate-Degrading Genes in the Gut Microbiota of Tibetan Pig. Front Microbiol 2020; 11:595066. [PMID: 33424798 PMCID: PMC7785962 DOI: 10.3389/fmicb.2020.595066] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/27/2020] [Indexed: 01/15/2023] Open
Abstract
Tibetan pig is an important domestic mammal, providing products of high nutritional value for millions of people living in the Qinghai-Tibet Plateau. The genomes of mammalian gut microbiota encode a large number of carbohydrate-active enzymes, which are essential for the digestion of complex polysaccharides through fermentation. However, the current understanding of microbial degradation of dietary carbohydrates in the Tibetan pig gut is limited. In this study, we produced approximately 145 gigabases of metagenomic sequence data for the fecal samples from 11 Tibetan pigs. De novo assembly and binning recovered 322 metagenome-assembled genomes taxonomically assigned to 11 bacterial phyla and two archaeal phyla. Of these genomes, 191 represented the uncultivated microbes derived from novel prokaryotic taxa. Twenty-three genomes were identified as metagenomic biomarkers that were significantly abundant in the gut ecosystem of Tibetan pigs compared to the other low-altitude relatives. Further, over 13,000 carbohydrate-degrading genes were identified, and these genes were more abundant in some of the genomes within the five principal phyla: Firmicutes, Bacteroidetes, Spirochaetota, Verrucomicrobiota, and Fibrobacterota. Particularly, three genomes representing the uncultivated Verrucomicrobiota encode the most abundant degradative enzymes in the fecal microbiota of Tibetan pigs. These findings should substantially increase the phylogenetic diversity of specific taxonomic clades in the microbial tree of life and provide an expanded repertoire of biomass-degrading genes for future application to microbial production of industrial enzymes.
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Affiliation(s)
- Saisai Zhou
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Linzhi, China
| | - Runbo Luo
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Linzhi, China
| | - Ga Gong
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Linzhi, China
| | - Yifei Wang
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Linzhi, China
| | - Zhuoma Gesang
- Animal Epidemic Prevention and Control Center of Tibet Autonomous Region, Lasa, China
| | - Kai Wang
- Shanghai MasScience Biotechnology Institute, Shanghai, China
| | - Zhuofei Xu
- Shanghai MasScience Biotechnology Institute, Shanghai, China
| | - Sizhu Suolang
- Department of Animal Science, Tibet Agricultural and Animal Husbandry College, Linzhi, China
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