Assistant Professor (cross-appointed with Animal Science)
Postdoctoral Fellow, INRS - Institut Armand-Frappier, Laval, QC, Canada
Ph.D. Microbiology, McGill University
M.Sc. Applied Microbiology, INRS - Institut Armand-Frappier, Laval, QC, Canada
B.Sc. Microbiology, Laval University
Awards and Recognitions
Microbiologiste agréé (Mcb.A.) by the Association des Microbiologists du Québec since 2012
Registered Member of the Canadian College of Microbiologists (RMCCM) since 2010
- Association des microbiologists du Québec
- Swine and Poultry Infectious Disease Research Centre (FRQ-NT Strategic Cluster)
- OptiLait (FRQ-NT Strategic Cluster)
- Fondation Initia (Contributing to the advancement of the agri-food industry through knowledge transfer)
- Canadian Society of Microbiologists
- American Society for Microbiology
- Safety For Food (Italy)
The theoretical approach of my research activities lies in the application of whole-community investigations (metagenomics) to elucidate the ecology of complex microbial communities in agricultural ecosystems. This is sustained by an experimental approach integrating complementary molecular and classical microbiology techniques in order to globally characterize the molecular and cellular microbial ecology of such communities and ecosystems.
The fundamental questions addressed by my research program are:
- How antibiotic additions to swine feed influence the occurrence of bacterial resistance to antibiotics in swine production?
- Which bacterial species and mobile genetic elements (plasmids, transposons, integrons) are involved in the dissemination of ecologically advantageous antibiotic resistance genes in swine production?
- What are the temporal evolution and geographical distribution of bacterial resistance to antibiotics in swine production?
We have initiated investigations in the area of bacterial ecology in the pre-harvest environment of animal and plant production, with a particular focus on the dynamics of antibiotic resistance and biodiversity in commensal anaerobic bacteria in swine production. It is known that, in the mammalian gut, pathogens are largely outnumbered by commensals, which can both harbor antibiotic resistance genes, and that anaerobes dominate over aerobes in terms of abundance. Thus, it is hypothesized that anaerobic commensal bacteria constitute the numerically and ecologically dominant sub-population in the swine large intestine.
Holman DB, Chénier MR (2014) Temporal changes and the effect of subtherapeutic concentrations of antibiotics in the gut microbiota of swine. FEMS Microbiology Ecology 90(3):599-608. dx.doi.org/10.1111/1574-6941.12419.
Holman DB, Baurhoo B, Chénier MR (2014) Temporal analysis of the effect of extruded flaxseed on the swine gut microbiota. Canadian Journal of Microbiology, 60(10):649-659. dx.doi.org/10.1139/cjm-2014-0317.
Pakpour S, Olishevska SV, Prasher SO, Milani AS, Chénier MR (2013) DNA extraction method selection for agricultural soil using TOPSIS multiple criteria decision-making model. American Journal of Molecular Biology, 3(4):215-228. dx.doi.org/10.4236/ajmb.2013.34028.
Holman DB, Chénier MR (2013) Impact of subtherapeutic administration of tylosin and chlortetracycline on antimicrobial resistance in farrow-to-finish swine. FEMS Microbiology Ecology, 85(1):1-13. dx.doi.org/10.1111/1574-6941.12093.
Pakpour S, Milani AS, Chénier MR (2012) A multiple-criteria decision-making approach for comparing sample preservation and DNA extraction methods from swine feces. American Journal of Molecular Biology, 2(2):159-169. dx.doi.org/10.4236/ajmb.2012.22018.
Pakpour S, Jabaji S, Chénier MR (2012) Frequency of antibiotic resistance in a swine facility 2.5 years after a ban on antibiotics. Microbial Ecology, 63:41-50. dx.doi.org/10.1007/s00248-011-9954-0.
Hussain SA, Prasher SO, Chénier MR, Arya G (2011) Removal of nitrate-N by antibiotic-exposed bacterial isolates from a constructed wetland. World Journal of Microbiology and Biotechnology, 27(9):2061-2069. dx.doi.org/10.1007/s11274-011-0668-8.
Chénier MR, Juteau P (2009) Impact of an aerobic thermophilic sequencing batch reactor on antibiotic-resistant anaerobic bacteria in swine waste. Microbial Ecology, 58:773-785. dx.doi.org/10.1007/s00248-009-9546-4.
Chénier MR, Juteau P (2009) Fate of chlortetracycline- and tylosin-resistant bacteria in an aerobic thermophilic sequencing batch reactor treating swine waste. Microbial Ecology, 58:86-97. dx.doi.org/10.1007/s00248-008-9478-4.
Chénier MR, Beaumier D, Roy R, Driscoll BT, Lawrence JR, Greer CW (2006) Influence of nutrient inputs, hexadecane and temporal variations on nitrification and exopolysaccharide composition of river biofilms. Canadian Journal of Microbiology, 52(8):786-797. dx.doi.org/10.1139/W06-030.
Chénier MR, Beaumier D, Fortin N, Roy R, Driscoll BT, Lawrence JR, Greer CW (2006) Influence of nutrient inputs, hexadecane and temporal variations on denitrification and community composition of river biofilms. Applied and Environmental Microbiology, 72(1):575-584. dx.doi.org/10.1128/AEM.72.1.575–584.2006.
Lawrence JR, Chénier MR, Roy R, Beaumier D, Fortin N, Swerhone GDW, Neu TR, Greer CW (2004) Microscale and molecular assessment of impacts of nickel, nutrients and oxygen level on structure and function of river biofilms. Applied and Environmental Microbiology, 70(7):4326-4339. dx.doi.org/10.1128/AEM.70.7.4326–4339.2004.
Chénier MR, Beaumier D, Roy R, Driscoll BT, Lawrence JR, Greer CW (2003) Impact of seasonal variations and nutrient inputs on nitrogen cycling and degradation of hexadecane by replicated river biofilms. Applied and Environmental Microbiology, 69(9):5170-5177. dx.doi.org/10.1128/AEM.69.9.5170–5177.2003.