Richard Villemur

Professeur INRS

Areas of expertise

Microbial ecology of bioprocesses , Environmental microbiology

  • INRS Professor

Phone
450 687-5010

Fax
450 686-5501

E-mail
richard.villemur@iaf.inrs.ca

Armand-Frappier Santé Biotechnologie Research Centre

531, boulevard des Prairies
Laval  (Québec)  H7V 1B7
CANADA

See research centre

Interested research topics

Molecular Biology of microorganisms capable of degrading pollutants

Chemical products released from industrial, agricultural, municipal and domestic activities have contaminated several areas during the last decades and have created important pollution problems. Several compounds such as aromatic molecules have mutagenic, teratogenic and/or carcinogenic properties. Conventional methods of decontamination or storage are expensive and not efficient, causing an urgent need of new methods. Degradation of these products by microorganisms offers a promising approach to decontaminate polluted sites.

It was shown that several bacterial strains and several bacterial consortium are capable, in aerobic or anaerobic conditions, to degrade different aromatic compounds such as chlorophenols, polychlorinated biphenyl (PCB), phenolic compounds and polycyclic aromatic hydrocarbons (PAH). These bacteria use different biochemical pathways to cleave the benzenic rings; the resulting molecules being more easily assimilated.

Our group has isolated several aerobic and anaerobic bacterial strains capable of degrading aromatic compounds. One of our objectives is to characterize genes encoding for enzymes involved in the degradation of aromatic compounds by studying their chromosomic arrangement, their sequence and their expression. Furthermore, we studied the gene products for their enzymatic properties and their structures.

Study of microbial diversity in bioprocesses

Several types of biological processes have been developed to treat contaminated soil/sediments, liquid effluents and exhausted air. Although physico-chemical parameters can be easily controlled by engineers, the understanding of what happens inside these bioprocesses often remains unclear. For instances, what kind of microorganisms are implicated in these bioprocesses, and what are their abundance and their physiological states are still unanswered questions. How the microbial population evolves during the ongoing process, and how it responds to different conditions or stresses remain to be determined. Finally, the spatial organization of microorganisms and the interactions occurring between each type of microorganisms and with the support need to be understood.

The majority of bioprocesses operates with complex and uncharacterized microbial communities. Research on the ecology of these communities is impaired by a lack of tools to analyse microorganisms which cannot be cultivated. Culture methods may favor fast-growing microorganisms that have not numerical or ecological importance in a process. The use of non-culturable approaches with molecular tools provides a more accurate evaluation of a microbial community.

Our research aims to evaluate the dynamics of microbial communities associated with biological processes of depollution with molecular tools. We use these tools to identify microorganisms (with the ribosomal gene sequences) present in the bioprocesses and to develop specific DNA probes for the detection and the monitoring of these microorganisms by fluorescent in situ hybridization. With epifluorescent and confocal microscopy, it is now possible to visualize specific microorganisms directly in their environment, for example, in biofilms.

This research will increase our fundamental knowledge by knowing how microorganisms participate in the studied bioprocesses. Combined with physico-chemical parameters, it will allow engineers to generate a more accurate modelization of the bioprocesses, leading on a better design and improvement of larger-scale bioprocesses. For example, it will allow early and precise diagnostics of some operational problems.

Dr. Richard Villemur, Ph.D. (Biochemistry, Université de Montréal, [1987]; postdoctoral studies at the National Research Council of Canada in Halifax [1987-1989] and at the University of Minnesota [1990-1993]) is a professor at INRS-Institut Armand-Frappier since 1993. His is the specialist in molecular biology for the Groupe de Recherche en Microbiologie de l’Environnement at INRS-Institut Armand-Frappier.

The Research Group on Environmental Microbiology is seeking Master and PhD candidates.  For more details see our web site at http://www.microbio-environnement.org

Publications

HAJJ-MOHAMAD, M., HACHAD, M., DESCHAMPS, G., SAUVÉ, S., VILLEMUR, R., BLAIS, M. A., PRÉVOST, M., & DORNER, S. (2019).
Fecal contamination of storm sewers: Evaluating wastewater micropollutants, human-specific Bacteroides 16S rRNA, and mitochondrial DNA genetic markers as alternative indicators of sewer cross connections.
Science of the Total Environment, 659, 548-560.

 

GEOFFROY, V., PAYETTE, G., MAUFFREY, F., LESTIN, L., CONSTANT, P., & VILLEMUR, R. (2018).
Strain-level genetic diversity of Methylophaga nitratireducenticrescens confers plasticity to denitrification capacity in a methylotrophic marine denitrifying biofilm.
Peerj, 6(e4679), 1-25.

 

MAUFFREY, F., CUCAITA, A., CONSTANT, P., & VILLEMUR, R. (2017).
Denitrifying metabolism of the methylotrophic marine bacterium Methylophaga nitratireducenticrescens strain JAM1.
PeerJ, 5(e4098), 1-22. doi: 0.7717/peerj.4098

 

LAPRADE, N., CLOUTIER, M., LAPEN, D. R., TOPP, E., WILKES, G., VILLEMUR, R., & KHAN, I. U. (2016).
Detection of virulence, antibiotic resistance and toxin (VAT) genes in Campylobacter species using newly developed multiplex PCR assays.
Journal of Microbiological Methods, 124, 41-47.

 

WHITEDUCK-LEVEILLEE, J., CLOUTIER, M., TOPP, E., LAPEN, D. R., TALBOT, G., VILLEMUR, R., & KHAN, I. U. (2016). Development and evaluation of multiplex PCR assays for rapid detection of virulence-associated genes in Arcobacter species.
Journal of Microbiological Methods, 121, 59-65.

 

WHITEDUCK-LEVEILLEE, K., WHITEDUCK-LEVEILLEE, J., CLOUTIER, M., TAMBONG, J. T., XU, R., TOPP, E., ARTS, M. T., CHAO, J., ADAM, Z., LEVESQUE, C. A., LAPEN, D. R., VILLEMUR, R., & KHAN, I. U. (2016).
Identification, characterization and description of Arcobacter faecis sp. nov., isolated from a human waste septic tank. Systematic and Applied Microbiology, 39(2), 93-99.

 

WHITEDUCK-LEVEILLEE, K., WHITEDUCK-LEVEILLEE, J., CLOUTIER, M., TAMBONG, J. T., XU, R., TOPP, E., ARTS, M. T., CHAO, J., ADAM, Z., LEVESQUE, C. A., LAPEN, D. R., VILLEMUR, R., TALBOT, G. & KHAN, I. U. (2015).
Arcobacter lanthieri sp. nov., isolated from pig and dairy cattle manure,
International Journal of Systematic and Evolutionary Microbiology, 65(8):. 2709-2716

 

MARTINEAU, C., MAUFFREY, F. & VILLEMUR, R. (2015)
Comparative Analysis of Denitrifying Activities of Hyphomicrobium nitrativorans, Hyphomicrobium denitrificans, and Hyphomicrobium zavarzinii,
Applied and Environmental Microbiology, 81, 15, 5003-14

 

VILLEMUR, R., JUTEAU, P., BOUGIE, V., MÉNARD, J. & DÉZIEL, E. (2015)
Development of four-stage moving bed biofilm reactor train with a pre-denitrification configuration for the removal of thiocyanate and cyanate,
Bioresource Technology, 181, 254-62

 

VILLEMUR, R., IMBEAU, M., VUONG, M. N., MASSON, L. & PAYMENT, P. (2015)
An environmental survey of surface waters using mitochondrial DNA from human, bovine and porcine origin as fecal source tracking markers,
Water Research, 69, 143-153

 

MARTINEAU, C., VILLENEUVE, C., MAUFFREY, F. & VILLEMUR, R. (2014)
Complete Genome Sequence of Hyphomicrobium nitrativorans Strain NL23, a Denitrifying Bacterium Isolated from Biofilm of a Methanol-Fed Denitrification System Treating Seawater at the Montreal Biodome,
Genome Announc, 2, 1,

 

VUONG, N. M., VILLEMUR, R., PAYMENT, P., BROUSSEAU, R., TOPP, E. & MASSON, L. (2013)
Fecal source tracking in water using a mitochondrial DNA microarray,
Water Research, 47, 1, 16-30

 

VILLENEUVE, C., MARTINEAU, C., MAUFFREY, F. & VILLEMUR, R. (2013)
Methylophaga nitratireducenticrescens sp. nov. and Methylophaga frappieri sp. nov., isolated from the biofilm of the methanol-fed denitrification system treating the seawater at the Montreal Biodome,
International Journal of Systematic and Evolutionary Microbiology, 63, Pt 6, 2216-2222

 

VILLEMUR, R., DOS SANTOS, S. C., OUELLETTE, J., JUTEAU, P., LEPINE, F. & DEZIEL, E. (2013)
Biodegradation of endocrine disruptors in solid-liquid two-phase partitioning systems by enrichment cultures,
Applied and Environmental Microbiology, 79, 15, 4701-11

 

VILLEMUR, R. (2013)
The pentachlorophenol-dehalogenating Desulfitobacterium hafniense strain PCP-1,
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 368, 1616, 20120319

 

OUELLETTE, J., DOS SANTOS, S. C. C., LÉPINE, F., JUTEAU, P., DÉZIEL, E. & VILLEMUR, R. (2013)
High absorption of endocrine disruptors by Hytrel: Towards the development of a two-phase partitioning bioreactor
Journal of Chemical Technology and Biotechnology , 88, 1, 119-125

 

MARTINEAU, C., VILLENEUVE, C., MAUFFREY, F. & VILLEMUR, R. (2013)
Hyphomicrobium nitrativorans sp. nov., isolated from the biofilm of a methanol-fed denitrification system treating seawater at the Montreal Biodome,
International Journal of Systematic and Evolutionary Microbiology, 63, Pt 10, 3777-3781

 

LALANDE, J., VILLEMUR, R. & DESCHÊNES, L. (2013)
A New Framework to Accurately Quantify Soil Bacterial Community Diversity from DGGE,
Microbial Ecology, 66, 3, 647-658

 

AUFFRET, M., YERGEAU, E., PILOTE, A., PROULX, E., PROULX, D., GREER, C. W., VANDENBERG, G. & VILLEMUR, R. (2013)
Impact of water quality on the bacterial populations and off-flavours in recirculating aquaculture systems
FEMS Microbiology Ecology , 84, 2, 235-247

 

VILLENEUVE, C., MARTINEAU, C., MAUFFREY, F. & VILLEMUR, R. (2012)
Complete Genome Sequences of Methylophaga sp. Strain JAM1 and Methylophaga sp. Strain JAM7
Journal of Bacteriology , 194, 15, 4126-4127

 

VILLENEUVE, C., MARTINEAU, C., MAUFFREY, F. & VILLEMUR, R. (2012)
Methylophaga nitratireducenticrescens sp. nov. and Methylophaga frappieri sp. nov. isolated from the biofilm of the methanol-fed denitrification system treating the seawater at the Montreal Biodome (Canada)
International Journal of Systematic and Evolutionary Microbiology ,

 

AUCLAIR, J., PARENT, S. & VILLEMUR, R. (2012)
Functional Diversity in the Denitrifying Biofilm of the Methanol-Fed Marine Denitrification System at the Montreal Biodome
Microbial Ecology , 63, 4, 726-735

 

AUCLAIR, J., LÉPINE, F. & VILLEMUR, R. (2012)
A liquid chromatography – mass spectrometry method to measure (13)C-isotope enrichment for DNA stable-isotope probing
Canadian Journal of Microbiology , 58, 3, 287-92

 

ISABELLE, M., VILLEMUR, R., JUTEAU, P. & LÉPINE, F. (2011)
Isolation of estrogen-degrading bacteria from an activated sludge bioreactor treating swine waste, including a strain that converts estrone to beta-estradiol
Canadian Journal of Microbiology , 57, 7, 559-568

 

DISNARD, J., BEAULIEU, C. & VILLEMUR, R. (2011)
Composition of the bacterial biota in slime developed in two machines at a Canadian paper mill
Canadian Journal of Microbiology , 57, 2, 91-104

 

CALDWELL, J., PAYMENT, P. & VILLEMUR, R. (2011)
Mitochondrial DNA as Source Tracking Markers of Fecal Contamination . In: HAGEDORN, C., BLANCH, A. R. & HARWOOD, V. J. (Eds.)
Microbial Source Tracking: Methods, Applications, and Case Studies. Springer New York, 229-250

 

BISAILLON, A., BEAUDET, R., LÉPINE, F. & VILLEMUR, R. (2011)
Quantitative analysis of the relative transcript levels of four chlorophenol reductive Dehalogenase genes in Desulfitobacterium hafniense PCP-1 exposed to chlorophenols
Applied and Environmental Microbiology , 77, 17, 6261-6264

 

AUFFRET, M., PILOTE, A., PROULX, E., PROULX, D., VANDENBERG, G. & VILLEMUR, R. (2011)
Establishment of a real-time PCR method for quantification of geosmin-producing Streptomyces spp. in recirculating aquaculture systems
Water Research , 45, 20, 6753-62

 

BISAILLON, A., BEAUDET, R., LÉPINE, F., DÉZIEL, E. & VILLEMUR, R. (2010)
Identification and characterization of a novel CprA reductive dehalogenase specific to highly chlorinated phenols from Desulfitobacterium hafniense strain PCP-1
Applied and Environmental Microbiology , 76, 22, 7536-7540

 

AUCLAIR, J., LÉPINE, F., PARENT, S. & VILLEMUR, R. (2010)
Dissimilatory reduction of nitrate in seawater by a Methylophaga strain containing two highly divergent narG sequences
ISME Journal , 4, 10, 1302-1313

 

VILLEMUR, R., LACASSE, M. & MORIN, A. (2009)
Monitoring the Bacterial and Fungal Biota of Eleven Tobacco Grades Stored at Three Different Locations
Beiträge zur Tabalkforschung International , 23, 6, 368-376

 

VALLET, B., LABELLE, M. A., RIEGER, L., BIGRAS, S., PARENT, S., JUTEAU, P., VILLEMUR, R. & COMEAU, Y. (2009)
Inhibition of biological phosphorus removal in a sequencing moving bed biofilm reactor in seawater
Water Science and Technology , 59, 6, 1101-1110

 

RESTREPO, J., LABELLE, M. A., PARENT, S., VILLEMUR, R., JUTEAU, P. & COMEAU, Y. (2009)
Biological phosphorus removal and denitrification of fish farm effluent in a sequencing moving bed biofilm bioreactor.
Water Quality Research Journal of Canada , 44, 3, 233-242

 

NEHMÉ, B., GILBERT, Y., LÉTOURNEAU, V., FORSTER, R. J., VEILLETTE, M., VILLEMUR, R. & DUCHAINE, C. (2009)
Culture-independent characterization of archaeal biodiversity in swine confinement building bioaerosols
Applied and Environmental Microbiology , 75, 17, 5445-5450

 

LAFORTUNE, I., JUTEAU, P., DÉZIEL, E., LÉPINE, F., BEAUDET, R. & VILLEMUR, R. (2009)
Bacterial diversity of a consortium degrading high-molecular-weight polycyclic aromatic hydrocarbons in a two-liquid phase biosystem
Microbial Ecology , 57, 3, 455-68

 

KORTBAOUI, R., LOCAS, A., IMBEAU, M., PAYMENT, P. & VILLEMUR, R. (2009)
Universal mitochondrial PCR combined with species-specific dot-blot assay as a source-tracking method of human, bovine, chicken, ovine, and porcine in fecal-contaminated surface water
Water Research , 43, 7, 2002-2010

 

CONSTANT, P., POISSANT, L. & VILLEMUR, R. (2009)
Tropospheric H2 budget and the response of its soil uptake under the changing environment
Science of the Total Environment , 407, 6, 1809-1823

 

LAURIN, V., LABBE, N., PARENT, S., JUTEAU, P. & VILLEMUR, R. (2008)
Microeukaryote Diversity in a Marine Methanol-Fed Fluidized Denitrification System
Microbial Ecology , 56, 4, 637-648

 

CONSTANT, P., POISSANT, L. & VILLEMUR, R. (2008)
Isolation of Streptomyces sp. PCB7, the first microorganism demonstrating high-affinity uptake of tropospheric H2
Isme Journal , 2, 10, 1066-1076

 

CONSTANT, P., POISSANT, L. & VILLEMUR, R. (2008)
Annual hydrogen, carbon monoxide and carbon dioxide concentrations and surface to air exchanges in a rural area (Québec, Canada)
Atmospheric Environment , 42, 20, 5090-5100

 

VILLEMUR, R., CONSTANT, P., GAUTHIER, A., SHARECK, M. & BEAUDET, R. (2007)
Heterogeneity between 16S ribosomal RNA gene copies borne by one Desulfitobacterium strain is caused by different 100-200 bp insertions in the 5 ‘ region
Canadian Journal of Microbiology , 53, 1, 116-128

 

LABBE, N., LAURIN, V., JUTEAU, P., PARENT, S. & VILLEMUR, R. (2007)
Microbiological community structure of the biofilm of a methanol-fed, marine denitrification system, and identification of the methanol-utilizing microorganisms
Microbial Ecology , 53, 4, 621-630

 

CONSTANT, P., POISSANT, L., VILLEMUR, R., YUMVIHOZE, E. & LEAN, D. (2007)
Fate of inorganic mercury and methyl mercury within the snow cover in the low arctic tundra on the shore of Hudson Bay (Quebec, Canada)
Journal of Geophysical Research D: Atmospheres , 112, D08309

 

VILLEMUR, R., LANTHIER, M., BEAUDET, R. & LÉPINE, F. (2006)
The Desulfitobacterium genus
Fems Microbiology Reviews , 30, 5, 706-733

 

LAURIN, V., LABBÉ, N., JUTEAU, P., PARENT, S. & VILLEMUR, R. (2006)
Long-term storage conditions for carriers with denitrifying biomass of the fluidized, methanol-fed denitrification reactor of the Montreal Biodome, and the impact on denitrifying activity and bacterial population
Water Research , 40, 9, 1836-40

 

GAUTHIER, A., BEAUDET, R., LÉPINE, F., JUTEAU, P. & VILLEMUR, R. (2006)
Occurrence and expression of crdA and cprA5 encoding chloroaromatic reductive dehalogenases in Desulfitobacterium strains
Canadian Journal of Microbiology , 52, 1, 47-55

 

DUPLA, M., COMEAU, Y., PARENT, S., VILLEMUR, R. & JOLICOEUR, M. (2006)
Design optimization of a self-cleaning moving-bed bioreactor for seawater denitrification
Water Research , 40, 2, 249-258

 

VILLEMUR, R. & DÉZIEL, E. (2005)
Phase variation and antigenic variation
Advances in Molecular and Cellular Microbiology , 8, Dynamic Bacterial Genome, 277-321

 

VILLEMUR, R., BEAUDET, R., LANTHIER, M., GAUTHIER, A., BOYER, A., THIBODEAU, J., LÉPINE, F., DUGUAY, M. & PAGE-BELANGER, R. (2005)
Molecular analysis of Desulfitobacterium frappieri pcp-1 involved in reductive dehalogenation of pentachlorophenol
Water Science and Technology , 52, 1-2, 101-106

 

MARTELLINI, A., PAYMENT, P. & VILLEMUR, R. (2005)
Use of eukaryotic mitochondrial DNA to differentiate human, bovine, porcine and ovine sources in fecally contaminated surface water
Water Research , 39, 4, 541-548

 

LANTHIER, M., JUTEAU, P., LÉPINE, F., BEAUDET, R. & VILLEMUR, R. (2005)
Desulfitobacterium hafniense is present in a high proportion within the biofilms of a high-performance pentachlorophenol-degrading, methanogenic fixed-film reactor
Applied and Environmental Microbiology , 71, 2, 1058-1065

 

LABELLE, M. A., JUTEAU, P., JOLICOEUR, M., VILLEMUR, R., PARENT, S. & COMEAU, Y. (2005)
Seawater denitrification in a closed mesocosm by a submerged moving bed biofilm reactor
Water Research , 39, 14, 3409-3417

 

JUTEAU, P., TREMBLAY, D., VILLEMUR, R., BISAILLON, J. G. & BEAUDET, R. (2005)
Erratum: Analysis of the bacterial community inhabiting an aerobic thermophilic sequencing batch reactor (AT-SBR) treating swine waste (Applied Microbiology and Biotechnology (2004) 66 (115-122) DOI: 10.1007/s00253-004-1692- 5)
Applied Microbiology and Biotechnology , 67, 2, 287

 

JUTEAU, P., TREMBLAY, D., VILLEMUR, R., BISAILLON, J. G. & BEAUDET, R. (2005)
Analysis of the bacterial community inhabiting an aerobic thermophilic sequencing batch reactor (AT-SBR) treating swine waste. [Erratum to document cited in CA142:203547]
Applied Microbiology and Biotechnology , 67, 2, 287

 

JUTEAU, P., COTE, V., DUCKETT, M. F., BEAUDET, R., LÉPINE, F., VILLEMUR, R. & BISAILLON, J. G. (2005)
Cryptanaerobacter phenolicus gen. nov., sp nov., an anaerobe that transforms phenol into benzoate via 4-hydroxybenzoate
International Journal of Systematic and Evolutionary Microbiology , 55, Pt 1, 245-250

 

CONSTANT, P., POISSANT, L. & VILLEMUR, R. (2005)
[Impact de la variation du niveau d’eau d’un marais du lac Saint-Pierre (Québec, Canada) sur les concentrations et les flux d’hydrogène, monoxyde de carbone, méthane et dioxyde de carbone ] Water level fluctuations of a Lake Saint-Pierre wetland’s (Québec, Canada) and their impact on hydrogen, carbon monoxide, methane and carbon dioxide tropospheric concentrations and fluxes.
Revue des Sciences de l’Eau , 18, 4, 521-539

 

BORDAS, F., LAFRANCE, P. & VILLEMUR, R. (2005)
Conditions for effective removal of pyrene from an artificially contaminated soil using Pseudomonas aeruginosa 57SJ rhamnolipids
Environmental Pollution , 138, 1, 69-76

 

THIBODEAU, J., GAUTHIER, A., DUGUAY, M., VILLEMUR, R., LEPINE, F., JUTEAU, P. & BEAUDET, R. (2004)
Purification, cloning, and sequencing of a 3,5-dichlorophenol reductive dehalogenase from Desulfitobacterium frappieri PCP-1
Applied and Environmental Microbiology , 70, 8, 4532-4537

 

LABBE, N., PARENT, S. & VILLEMUR, R. (2004)
Nitratireductor aquibiodomus gen. nov., sp nov., a novel alpha-proteobacterium from the marine denitrification system of the Montreal Biodome (Canada)
International Journal of Systematic and Evolutionary Microbiology , 54, 269-273

 

JUTEAU, P., TREMBLAY, D., VILLEMUR, R., BISAILLON, J. G. & BEAUDET, R. (2004)
Analysis of the bacterial community inhabiting an aerobic thermophilic sequencing batch reactor (AT-SBR) treating swine waste
Applied Microbiology and Biotechnology , 66, 1, 115-122

 

HUTCHINSON, J., RUNGE, W., MULVEY, M., NORRIS, G., YETMAN, M., VALKOVA, N., VILLEMUR, R. & LEPINE, F. (2004)
Burkholderia cepacia Infections Associated with Intrinsically Contaminated Ultrasound Gel: The Role of Microbial Degradation of Parabens
Infection Control and Hospital Epidemiology , 25, 4, 291-296

 

LABBÉ, N., PARENT, S. & VILLEMUR, R. (2003)
Addition of trace metals increases denitrification rate in closed marine systems
Water Research , 37, 4, 914-920

 

LABBÉ, N., JUTEAU, P., PARENT, S. & VILLEMUR, R. (2003)
Bacterial diversity in a marine methanol-fed denitrification reactor at the Montreal biodome, Canada
Microbial Ecology , 46, 1, 12-21

 

JUTEAU, P., BISAILLON, J. G., LÉPINE, F., RATHEAU, V., BEAUDET, R. & VILLEMUR, R. (2003)
Improving the biotreatment of hydrocarbons-contaminated soils by addition of activated sludge taken from the wastewater treatment facilities of an oil refinery
Biodegradation , 14, 1, 31-40

 

GAUTHIER, E., DÉZIEL, E., VILLEMUR, R., JUTEAU, P., LÉPINE, F. & BEAUDET, R. (2003)
Initial characterization of new bacteria degrading high-molecular weight polycyclic aromatic hydrocarbons isolated from a 2-year enrichment in a two-liquid-phase culture system
Journal of Applied Microbiology , 94, 2, 301-311

 

DÉZIEL, E., LÉPINE, F., MILOT, S. & VILLEMUR, R. (2003)
rhlA is required for the production of a novel biosurfactant promoting swarming motility in Pseudomonas aeruginosa: 3-(3-hydroxyalkanoyloxy)alkanoic acids (HAAs), the precursors of rhamnolipids
Microbiology , 149, 8, 2005-2013

 

BOYER, A., PAGÉ-BÉLANGER, R., SAUCIER, M., VILLEMUR, R., LÉPINE, F., JUTEAU, P. & BEAUDET, R. (2003)
Purification, cloning and sequencing of an enzyme mediating the reductive dechlorination of 2,4,6-trichlorophenol from Desulfitobacterium frappieri PCP-1
Biochemical Journal , 373, 297-303

 

VILLEMUR, R., SAUCIER, M., GAUTHIER, A. & BEAUDET, R. (2002)
Occurrence of several genes encoding putative reductive dehalogenases in Desulfitobacterium hafniense/frappieri and Dehalococcoides ethenogenes
Canadian Journal of Microbiology , 48, 8, 697-706

 

VILLEMUR, R., SAUCIER, M., GAUTHIER, A. & BEAUDET, R. (2002)
Erratum: Occurrence of several genes encoding putative reductive dehalogenases in Desulfitobacterium hafniense/frappieri and Dehalococcoides ethenogenes (Canadian Journal of Microbiology (2002) 48 (697-706))
Canadian Journal of Microbiology , 48, 10, 945

 

VALKOVA, N., LÉPINE, F., BOLLET, C., DUPONT, M. & VILLEMUR, R. (2002)
prbA, a gene coding for an esterase hydrolyzing parabens in Enterobacter cloacae and Enterobacter gergoviae strains
Journal of Bacteriology , 184, 18, 5011-5017

 

MCLAUGHLIN, R. W., VALI, H., LAU, P. C. K., PALFREE, R. G. E., DE CICCIO, A., SIROIS, M., AHMAD, D., VILLEMUR, R., DESROSIERS, M. & CHAN, E. C. S. (2002)
Are there naturally occurring pleomorphic bacteria in the blood of healthy humans?
Journal of Clinical Microbiology , 40, 12, 4771-4775

 

LÉPINE, F., DÉZIEL, E., MILOT, S. & VILLEMUR, R. (2002)
Liquid chromatographic/mass spectrometric detection of the 3-(3-hydroxyalkanoyloxy)alkanoic acid precursors of rhamnolipids in Pseudomonas aeruginosa cultures
Journal of Mass Spectrometry , 37, 1, 41-46

 

LANTHIER, M., TARTAKOVSKY, B., VILLEMUR, R., DELUCA, G. & GUIOT, S. R. (2002)
Microstructure of anaerobic granules bioaugmented with Desulfitobacterium frappieri PCP-1
Applied and Environmental Microbiology , 68, 8, 4035-4043

 

GUIOT, S. R., TARTAKOVSKY, B., LANTHIER, M., LEVESQUE, M. J., MANUEL, M. F., BEAUDET, R., GREER, C. W. & VILLEMUR, R. (2002)
Strategies for augmenting the pentachlorophenol degradation potential of UASB anaerobic granules
Water Science and Technology , 45, 10, 35-41

 

GAUTHIER, C., ST-PIERRE, Y. & VILLEMUR, R. (2002)
Rapid antimicrobial susceptibility testing of urinary tract isolates and samples by flow cytometry
Journal of Medical Microbiology , 51, 3, 192-200