Biodiversity and ecology of soil microbes

Associate researcher
Institut de recherche en biologie végétale


Soil microbial communities are extremely diverse, with potentially thousands of microbial “species” inhabiting a single gram of soil. Many microorganisms interact with plants and can improve nutrients uptake, reduce pathogens damage or protect against toxic molecules. My research program aim at understanding how plants can stimulate microbial activity and select beneficial microbes, and conversely how these microbes benefit plants. We use a variety of high-throughput sequencing approaches to target entire microbial communities from plant-associated environments, using metagenomics to identify the microorganisms and functional genes that are present, and metatranscriptomics to identify the genes that are actively expressed.

Keywords: Biodiversity and ecology of soil microbes • Mycorrhizal symbiosis • Soil metagenomics and metatranscriptomics • Sustainable agriculture • Biocontrol • Biofertilization Bioremediation

Referred scientific publications

(PDF available by email request to


  • Blakney AJC, M St-Arnaud, M Hijri. 2024. Does soil history decline in influencing the structure of bacterial communities of Brassica napus host plants across different growth stages? ISME Communications 4 (1): ycae019. (


  • Alotaibi F, Z Lahrach, S-J Lee, M St-Arnaud, M Hijri. 2023. Draft genome of Nocardia canadensis sp. nov. isolated from petroleum-hydrocarbon-contaminated soil. Microorganisms 11, 2972. (
  • Quiza l, J Tremblay, AP Pagé, C Greer, CJ Pozniak, R Li, B Haug, SM Hemmingsen, M St-Arnaud, E Yergeau. 2023. The effect of wheat genotype on the microbiome is more evident in roots and varies through time. ISME Communications 3 : 32 (
  • Pande MP, H Azarbad, J Tremblay, M St-Arnaud, E Yergeau. 2023. Metatranscriptomic response of the wheat holobiont to decreasing soil water content. ISME Communications 3: 30 (
  • Blakney AJC, LD Bainard, M St-Arnaud, M Hijri. 2023. Soil chemistry and soil history significantly structure oomycete communities in Brassicaceae crop rotations. Applied & Environmental Microbiology 89: e01314-01322 (


  • Alotaibi F, M St-Arnaud, M Hijri. 2022. In-depth characterization of plant growth promotion potentials of selected alkanes-degrading plant growth-promoting bacterial isolates. Frontiers in Microbiology 13: 863702 (
  • Rchiad Z, M Dai, C Hamel, LD Bainard, B Cade-Menun, Y Terrat, M St-Arnaud, M Hijri. 2022. Soil depth significantly shifted microbial community structures and functions at semiarid prairie agroecosystem. Frontiers in Microbiology 13: 815890 (
  • Floc’h J-B, C Hamel, M Laterrière, B Tidemann, M St-Arnaud, M Hijri. 2022. Long-term persistence of arbuscular mycorrhizal fungi in the rhizosphere and bulk soils of non-host Brassica napus and their networks of co-occurring microbes. Frontiers in Plant Science 13:828145. (
  • Blakney AJC, LD Bainard, M St-Arnaud, M Hijri. 2022. Brassicaceae host plants mask the feedback from the previous year’s soil history on bacterial communities, except when they experience drought. Environmental Microbiology 24: 3529-3548 (


  • Floc’h J-B, C Hamel, M Laterrière, B Tidemann, M St-Arnaud, M Hijri. 2021. Inter-kingdom networks of canola microbiome reveal Bradyrhizobium as keystone species and underline the importance of bulk soil in microbial studies to enhance canola production. Microbial Ecology (
  • Alotaibi F, S-J Lee, M St-Arnaud, M Hijri. 2021. Salix purpurea and Eleocharis obtusa rhizospheres harbor a diverse rhizospheric bacterial community characterized by hydrocarbons degradation potentials and plant growth-promoting properties. Plants 10: 1987 (
  • Alotaibi F, Hijri M, St-Arnaud M. 2021. Overview of approaches to improve rhizoremediation of petroleum hydrocarbons contaminated soils. Applied Microbiology 1(2): 329-351 (
  • Li Y, M Laterriere, C-Y Lay, R Klabi, J Masse, M St-Arnaud, É Yergeau, N Lupwayi, Y Gan, C Hamel. 2021. Effect of arbuscular mycorrhizal inoculation and crop sequence on root-associated microbiome, crop productivity and nutrient uptake in wheat-based and flax-based cropping systems. Applied Soil Ecology 168: 104136 (
  • Quiza L, J Tremblay, C Greer, S Hemmingsen, M St-Arnaud, C Pozniak, E Yergeau. 2021. Rhizosphere shotgun metagenomic analyses fail to show large differences between ancestral and modern wheat genotypes grown under low fertiliser inputs. FEMS Microbiology Ecology, fiab071 (
  • Bell TH, NR Camillone, K Abram, MAV Bruns, E Yergeau, M St-Arnaud. 2021. Hydrocarbon substrate richness impacts microbial abundance, microbiome composition, and hydrocarbon loss. Applied Soil Ecology 165: 104015 (
  • Yang T, N Lupwayi, M St-Arnaud, K Siddique, LD Bainard. 2021. Anthropogenic drivers of soil microbial communities and impacts on soil biological functions in agroecosystems. Global Ecology & Conservation 27: e01521 (


  • ALKahtani MDF, A Fouda, KA Attia, F Al-Otaibi, AM Eid, EED Ewais, M Hijri, M St-Arnaud, SED Hassan, N Khan, Y Hafez, KAA Abdelaal. 2020. Isolation and characterization of plant growth promoting endophytic bacteria from desert plants and their application as bioinoculants for sustainable agriculture. Agronomy 10: 1325 (
  • Wang L, Gan Y, Bainard LD, Hamel C, St-Arnaud M, Hijri M. 2020. Expression of nitrogen cycling genes of root microbiomes provides insights for sustaining oilseed crop production. Environmental Microbiology (
  • Floc’h J-B, C Hamel, N Lupwayi, KN Harker, M Hijri, M St-Arnaud. 2020. Bacterial communities of the canola rhizosphere: network analysis reveals a core bacterium shaping microbial interactions. Frontier in Microbiology 11: 1587 (
  • Lee S-J, Kong M, St-Arnaud M, Hijri M. 2020. Arbuscular mycorrhizal fungal communities of native plant species under extreme petroleum hydrocarbon contamination highlights Rhizophagus as a key tolerant genus. Microorganisms 8 (6): 872 (
  • Floc’h J-B, C Hamel, KN Harker, M St-Arnaud. 2020. Fungal communities of the canola rhizosphere: keystone species and substantial between-year variation of the rhizosphere microbiome. Microbial Ecology:
  • Dagher DJ, IE de la Providencia, FE Pitre, M St-Arnaud & M Hijri. 2020. Arbuscular mycorrhizal fungal assemblages significantly shifted upon bacterial inoculation in non-contaminated and petroleum-contaminated environments. Microorganisms 8: 602 (


  • Dagher DJ, IE de la Providencia, FE Pitre, M St-Arnaud & M Hijri. 2019. Plant identity shaped rhizospheric microbial communities more strongly than bacterial bioaugmentation in petroleum hydrocarbon-polluted sediments. Frontiers in Microbiology 10: 2144 (
  • Sabeh M, E Lord, É Grenier, M St-Arnaud, B Mimee. 2019. What determine host specificity in hyperspecialized plant parasitic nematodes? BMC Genomics 20: 457 (
  • Kui L, RE Blackshaw, EN Johnson, Z Hossain, C Hamel, M St-Arnaud, Y Gan. 2019. Lentil enhances the stability of oilseed-cereal cropping systems across different environments. European Journal of Agronomy 105: 24-31 (doi:10.1016/j.eja.2019.02.005).


  • Correa-García S, P Pande, A Séguin, M St-Arnaud, E Yergeau. 2018. Rhizoremediation of petroleum hydrocarbons: a model system for plant microbiome manipulation. Microbial Biotechnology 11: 819-832 (
  • Lay C-Y, TH Bell, C Hamel, N Harker, R Mohr, CW Greer, É Yergeau, M St-Arnaud. 2018. Canola root-associated microbiomes in the Canadian Prairies. Frontier in Microbiology 9: 1188 (
  • Lay C-Y, C Hamel, M St-Arnaud. Taxonomy and pathogenicity of Olpidium brassicae and its allied species. 2018. Fungal Biology 122: 837-846 (
  • Pray, TJ, W Guidi Nissim, M St-Arnaud, M Labrecque. 2018. Investigating the effect of a mixed mycorrhizal inoculum on the productivity of biomass plantations willows grown in marginal farm land. Forests 9: 185 (
  • Gonzalez E., Brereton N.J.B., Marleau J., Guidi Nissim W., Pagé A., St-Arnaud M., Labrecque M., Yergeau E., Joly S., Pitre F. 2018. Trees, fungi and bacteria: tripartite metatranscriptomics of a root microbiome responding to soil contamination. Microbiome 6: 53 (
  • Yergeau E, J Tremblay, S Joly, M Labrecque, C Maynard, FE Pitre, M St-Arnaud, CW Greer. 2018. Soil contamination alters the willow root and rhizosphere metatranscriptome and the root–rhizosphere interactome. The ISME Journal 12: 869–884 (
  • Sabeh M, M-O Duceppe, M St-Arnaud, B Mimee. 2018. Transcriptome-wide selection of a reliable set of reference genes for gene expression studies in potato cyst nematodes (Globodera spp.). Plos One 13: e0193840 (
  • Klabi R, TH Bell, C Hamel, MP Schellenberg, A Iwaasa, M St-Arnaud. 2018. Contribution of Medicago sativa to the productivity and nutritive value of forage in semi-arid grassland pastures. Grass and Forage Science 73 (1): 159-173 (


  • Iffis B, M St-Arnaud, M Hijri. 2017. Petroleum contamination and plant identity influence soil and root microbial communities while AMF spores retrieved from the same plants possess markedly different communities. Frontiers in Plant Science 8: 1381 (
  • Marchand C, TH Bell, M St-Arnaud, W Hogland, M Hijri. 2017. Petroleum biodegradation capacity of bacteria and fungi isolated from petroleum-contaminated soil. International Biodeterioration & Biodegradation 116: 48-57 (
  • Taktek S, M St-Arnaud, Y Piché, JA Fortin, H Antoun. 2017. Igneous phosphate rock solubilization by biofilm-forming mycorrhizobacteria and hyphobacteria associated with Rhizoglomus irregulare DAOM 197198. Mycorrhiza 27 (1): 13-22 (


  • Iffis B, M St-Arnaud, M Hijri. 2016. Petroleum hydrocarbon contamination, plant identity and arbuscular mycorrhizal fungal community determine assemblages of the AMF spore-associated microbes. Environmental Microbiology 18: 2689–2704 (
  • Bell TH, FOP Stefani, K Abram, J Champagne, E Yergeau, M Hijri, M St-Arnaud. 2016. A diverse soil microbiome degrades more crude oil than specialized bacterial assemblages obtained in culture. Applied and Environmental Microbiology 82 (18): 5530-5541 (
  • Bourdel, G, A Roy-Bolduc, M St-Arnaud, M Hijri. 2016. Concentration of petroleum-hydrocarbon contamination shapes fungal endophytic community structure in plant roots. Frontiers in Microbiology 7: 685 (
  • Rohrbacher F, M St-Arnaud. 2016. Root exudation: the ecological driver of hydrocarbon rhizoremediation. Agronomy 6 (1): 19 (


  • Ellouze W, C Hamel, S Bouzid, M St-Arnaud. Root endophytes modify the allelopathic effects of chickpea on the emergence of durum wheat. Applied Soil Ecology 96: 201-210 (
  • Taktek S, M Trépanier, P Magallon Servin, M St-Arnaud, Y Piché, JA Fortin, H Antoun. Trapping of phosphate solubilizing bacteria on hyphae of the arbuscular mycorrhizal fungus Rhizophagus irregularis DAOM 197198. Soil Biology & Biochemistry 90: 1-9 (
  • Quiza L, M St-Arnaud, E Yergeau. Harnessing phytomicrobiome signalling for rhizosphere microbiome engineering. Frontiers in Plant Science 6: 507 (
  • Bell TH, B Cloutier-Hurteau, F Al-Otaibi, M-C Turmel, E Yergeau, F Courchesne, M St-Arnaud. Early rhizosphere microbiome composition is related to the growth and Zn uptake of willows introduced to a former landfill. Environmental Microbiology 17(8): 3025-3038 (
  • de la Providencia IE, FO Stephanie, M Labridy, M St-Arnaud, M Hijri. Arbuscular mycorrhizal fungal diversity associated with Eleocharis obtusa and Panicum capillare growing in an extreme petroleum hydrocarbon-polluted sedimentation basin. FEMS Microbiology Letters 362 (12): fnv081 (
  • Klabi R, TH Bell, C Hamel, MP Schellenberg, A Iwaasa, A Raies, M St-Arnaud. 2015. Plant assemblage composition and soil P level differentially affect communities of AM and total fungi in a semi-arid grassland. FEMS Microbiology Ecology 91: 1-13 (
  • Stefani F, Bell TH, Marchand C, de la Providencia I, El-Yassimi A, St-Arnaud M, Hijri M. Culture-dependent and -independent methods capture different microbial community fractions in hydrocarbon-contaminated soils. PLoS One 10(6): e0128272 (


  • Iffis B, M St-Arnaud, M Hijri. Bacteria associated with arbuscular mycorrhizal fungi within roots of plants growing in a soil highly contaminated with aliphatic and aromatic petroleum hydrocarbons. FEMS Microbiology Letters 358: 44–54 (doi: 10.1111/1574-6968.12533).
  • Hassan SE*, T Bell*, FOP Stefani, D Denis, M Hijri, M St-Arnaud. Contrasting the community structure of arbuscular mycorrhizal fungi from hydrocarbon-contaminated and uncontaminated soils following willow (Salix spp. L.) planting. PLoS ONE 9: e102838 (doi:10.1371/journal.pone.0102838).
    *ces auteurs ont contribué également
  • Klabi R, C Hamel, MP Schellenberg, A Iwaasa, A Raies, M St-Arnaud. 2014. Interaction between legume and arbuscular mycorrhizal fungi identity alters the competitive ability of warm-season grass species in a grassland community. Soil Biology & Biochemistry 70: 176–182 (DOI: 10.1016/j.soilbio.2013.12.019).
  • Yergeau, E, S Sanschagrin, C Maynard, M St-Arnaud, CW Greer. 2014. Microbial expression profiles in the rhizosphere of willows depend on soil contamination. The ISME Journal 8: 344–358 (
    (article libre accès)
  • Bell T, SE Hassan, A Lauron-Moreau, F Al-Otaibi, M Hijri, E Yergeau, M St-Arnaud. 2014. Linkage between bacterial and fungal rhizosphere communities in hydrocarbon-contaminated soils is related to plant phylogeny. The ISME Journal 8: 331–343 (
    (article libre accès)


  • Boon E, E Zimmerman, M St-Arnaud and M Hijri. 2013. Allelic differences among G. etunicatum sister spores suggest segregation at sporulation. PLoS ONE 8 (12): e83301 (doi: 10.1371/journal.pone.0083301).
  • Hassan, S.E., M. Hijri & M. St-Arnaud. 2013. Effect of arbuscular mycorrhizal fungi on trace metal uptake by sunflower plants grown on cadmium contaminated soil. New Biotechnology 30: 780-787 (doi: 10.1016/j.nbt.2013.07.002)
  • Hassan, S.E., A. Liu, S. Bittman, T.A. Forge, D.E. Hunt, M. Hijri & M. St-Arnaud. 2013. Impact of 12-year field treatments with organic and inorganic fertilizers on crop productivity and mycorrhizal community structure. Biology and Fertility of Soils: 49: 1109–1121 (doi:10.1007/s00374-013-0813-7)
  • Ellouze, W, C. Hamel, V. Vujanovic, Y. Gan, S. Bouzid, M. St-Arnaud. 2013. Chickpea genotype shapes the soil microbiome and affect the establishment of the subsequent durum wheat crop in the semiarid north american great plains. Soil Biology & Biochemistry 63: 129-141 (doi:10.1016/j.soilbio.2013.04.001)
  • Beauregard, M.-S., C. Hamel, M.-P. Gauthier, T. Zhang, C.S. Tan, T. Welacky, M. St-Arnaud. 2013. Various forms of organic and inorganic P fertilizers did not negatively affect AM fungi communities and biomass in a maize-soybean rotation system. Mycorrhiza 23: 143-154 (doi:10.1007/s00572-012-0459-6)


  • Ellouze, W, C. Hamel, A. Freire Cruz, T. Ishii, Y. Gan, S. Bouzid, M. St-Arnaud. 2012. Phytochemicals and spore germination: at the root of AMF host preference? Applied Soil Ecology 60: 98– 104 (doi:10.1016/j.apsoil.2012. 02.004)


  • Ellouze, W., C. Hamel, S. Bouzid, M. St-Arnaud. 2011. Mycorrhizosphere interactions mediated through rhizodepositions and arbuscular mycorrhizal hyphodeposition and their application in sustainable agriculture. pp 133-152 In In Susanne M. Fulton (ed). Mycorrhizal Fungi: Soil, Agriculture and Environmental Implications, Nova Science Publishers, Hauppauge, NY.
  • Hassan, S.E., E. Boon, M. St-Arnaud, M. Hijri. 2011. Molecular biodiversity of arbuscular mycorrhizal fungi in trace metal-polluted soils. Molecular Ecology 20: 3469–3483 (doi: 10.1111/j.1365-294X.2011.05142.x)
  • Marleau, J., Y. Dalpé, M. St-Arnaud, M. Hijri. 2011. Correction: Spore development and nuclear inheritance in arbuscular mycorrhizal fungi. BMC Evolutionary Biology 11:97 (doi:10.1186/1471-2148-11-97)
  • Lecomte, J., M. St-Arnaud, M. Hijri. 2011. Isolation and identification of soil bacteria growing at the expense of arbuscular mycorrhizal fungi. FEMS Microbiology Letters: published online (DOI:10.1111/j.1574-6968.2011.02209.x)
  • Marleau, J., Y. Dalpé, M. St-Arnaud, M. Hijri. 2011. Spore development and nuclear inheritance in arbuscular mycorrhizal fungi. BMC Evolutionary Biology 11:51 (doi:10.1186/1471-2148-11-51).
    PDF disponible en accès libre à:


  • Beauregard M-S, C Hamel, A. Nayyar, M. St-Arnaud. 2010. Long-term phosphorus fertilization impacts soil fungal and bacterial diversity but not AM fungal community in alfalfa. Microbial Ecology 59: 379-389 (DOI: 10.1007/s00248-009-9583-z)
  • Bissonnette, L., M. St-Arnaud & M. Labrecque. 2010. Phytoextraction of heavy metals by two Salicaceae clones in symbiosis with arbuscular mycorrhizal fungi during the second year of a field trial. Plant and Soil 332: 55–67 (DOI : 10.1007/s11104-009-0273-x)
  • Hassan, S.E., M. St-Arnaud, M. Labrecque & M. Hijri. 2010. Phytoremediation: biotechnological procedures involving plants and arbuscular mycorrhizal fungi. In press In Devarajan Thangadurai, Carlos Alberto Busso, Mohamed Hijri (eds). Mycorrhizal biotechnology, CRC Press, Boca Raton, FL
  • Lioussanne, L., F. Perrault, L., M. Jolicoeur & M. St-Arnaud. 2010. The bacterial community of tomato rhizosphere is modified by inoculation with arbuscular mycorrhizal fungi but unaffected by soil enrichment with mycorrhizal root exudates or inoculation with Phytophthora nicotianae. Soil Biology & Biochemistry 42: 473-483 (DOI: 10.1016/j.soilbio.2009.11.034)
  • Yergeau E, K Labour, C Hamel, V Vujanovic, A Nakano-Hylander, R Jeannotte, M St-Arnaud. 2010. Patterns of Fusarium community structure and abundance in relation to spatial, abiotic and biotic factors. FEMS Microbiology Ecology 71: 34-42 (doi: 10.1111/j.1574-6941.2009.00777.x)


  • Lioussanne L, M-S Beauregard, C Hamel, M Jolicoeur, M St-Arnaud. 2009. Interactions between arbuscular mycorrhizal fungi and soil microorganisms. pp 51-69 In Khasa D, Piché Y, Coughlan A (Eds) Advances in mycorrhizal science and technology. NRC Research Press, Ottawa
  • Lioussanne L, M Jolicoeur, M St-Arnaud 2009 The growth of the soilborne pathogen Phytophthora nicotianae is reduced in tomato roots colonized with arbuscular mycorrhizal fungi but unaffected by application of root exudates collected from corresponding mycorrhizal plants. Mycorrhiza 19:443-448 (DOI 10.1007/s00572-009-0257-y)
  • Lioussanne, L., M. Jolicoeur, M. St-Arnaud. 2009. Role of root exudates and rhizosphere microflora in the arbuscular mycorrhizal fungi-mediated biocontrol of Phytophthora nicotianae in tomato. pp 141-158 In Symbiotic Fungi: Principles and Practice. Ajit Varma and Amit C Kharkwal (eds.), Soil Biology Series, Springer-Verlag, Berlin, Heidelberg (DOI: 10.1007/978-3-540-95894-9_9)
  • Paulin MM, A Novinscak, M St-Arnaud, J-P Privé, J Owen, M Filion. 2009. Transcriptional activity of antifungal metabolite-encoding genes phlD and hcnBC in Pseudomonas spp. using qRT-PCR. FEMS Microbiol. Ecol. 68: 212-222 (DOI:10.1111/j.1574-6941.2009.00669.x)
  • Zimmerman, E., M. St-Arnaud, M. Hijri. 2009. Sustainable agriculture and the AMF multigenomic model: how advances in AMF genetics will change soil management practices pp. 269-287 In Plant-Microorganisms Interactions. Bouarab K, Brisson N, Daayf F (eds). CABI, Oxford, UK


  • Beauregard M.S., C. Hamel, M. St-Arnaud. 2008. AM fungi communities in major intensive North American grain productions pp 135-158 In Z.A. Siddiqui, S. Akhtar, K. Futai (eds) Mycorrhizae: Sustainable Agriculture and Forestry. Springer, The Netherlands
  • Chapdelaine A, Y. Dalpé, C. Hamel, M. St Arnaud. 2008. Arbuscular mycorrhizal inoculation of ornamental trees in nursery. pp. 46-55 In Feldmann F, Kapulnik Y, Baar J (eds). Mycorrhiza works. Proceedings of the International symposium Mycorrhiza for plant vitality and the Joint meeting of Working groups 1-4 of Cost action 870, Oct. 3-5, 2007, Hannover. Deutsche Phytomedizinische Gesellschaft, Spectrum Phytomedizin, Braunschweig, Germany
  • Lioussanne, L., M. Jolicoeur & M. St-Arnaud. 2008. Mycorrhizal colonization with Glomus intraradices and development stage of transformed tomato roots significantly modify the chemotactic response of zoospores of the pathogen Phytophthora nicotianae. Soil Biology & Biochemistry 40: 2217-2224 (doi:10.1016/j.soilbio.2008.04.013)


  • Lauzer D, S Renaut, M St-Arnaud, D Barabé. 2007. In vitro asymbiotic germination, protocorm development and plantlet acclimatization of Aplectrum hyemale (Muhl. ex Willd.) Torr. (Orchidaceae). Journal of the Torrey Botanical Society 134: 344-348
  • Scheffknecht S., M. St-Arnaud, T. Khaosaad, S. Steinkellner, H. Vierheilig. 2007. An altered root exudation pattern through mycorrhization affecting microconidia germination of the highly specialized tomato pathogen Fusarium oxysporum f. sp. lycopersici (Fol) is not tomato specific but also occurs in Fol non-host plants. Canadian Journal of Botany 85: 347-351
  • St-Arnaud, M., V. Vujanovic. 2007. Effect of the arbuscular mycorrhizal symbiosis on plant diseases and pests. pp. 67-122 In: Hamel, C. & Plenchette, C. (eds). Mycorrhizae in crop production. Haworth Food & Agricultural Products Press, Binghampton, NY
  • Vujanovic V., R.C. Hamelin, L. Bernier, G. Vujanovic, M. St-Arnaud. 2007. Fungal diversity, dominance and community structure in the rhizosphere of clonal Picea mariana plants throughout nursery production chronosequences. Microbial Ecology 54: 672-684


  • Vujanovic, V., C. Hamel, E. Yergeau & M. St-Arnaud. 2006. Biodiversity and biogeography of Fusarium species from northeastern North American asparagus fields based on microbiological and molecular approaches. Microbial Ecology 51: 242-255
  • Yergeau, E., D.W. Sommerville, E. Maheux, V. Vujanovic, C. Hamel, J. Whalen & M. St-Arnaud. 2006. Relationships between Fusarium population structure, soil nutrient status and disease incidence in field-grown asparagus. FEMS Microbiology Ecology 58: 394-403
  • Yergeau, E., V. Vujanovic & M. St-Arnaud. 2006. Changes in communities of Fusarium and arbuscular-mycorrhizal fungi as related to different asparagus cultural factors. Microbial Ecology 52: 104-113


  • Hamel, C., Vujanovic, V., Nakano-Hylander, A., Jeannotte, R. & M. St-Arnaud. 2005. Factors associated with Fusarium crown and root rot of asparagus outbreaks in Quebec. Phytopathology 95: 867-873
  • Hamel, C., V. Vujanovic, R. Jeannotte, A. Nakano-Hylander & M. St-Arnaud. 2005. Negative feedback on a perennial crop: Fusarium crown and root rot of asparagus is related to changes in soil microbial community structure. Plant and Soil 268: 75-87
  • St-Arnaud, M. & A. Elsen. 2005. Interaction of arbuscular mycorrhizal fungi with soil-borne pathogens and non-pathogenic rhizosphere micro-organisms. pp. 217-231 In: Declerck, S., Strullu, D.-G. & J.A. Fortin (eds). In vitro culture of mycorrhizas. Soil biology Series, A. Varma (ed), Springer-Verlag, Berlin
  • Vujanovic, M. & M. St-Arnaud. 2005. Root-rot of black spruce caused by Cylindrocladium canadense in Eastern North America. Plant Disease 89: 204
  • Wen, K., P. Seguin, M. St-Arnaud & S.H. Jabaji-Hare. 2005. Real-time quantitative RT-PCR of defense-associated gene transcripts of Rhizoctonia solani-infected bean seedlings in response to inoculation with a non-pathogenic binucleate Rhizoctonia isolate. Phytopathology 95: 345-353
  • Yergeau, E., M. Filion, V. Vujanovic & M. St-Arnaud. 2005. A PCR-denaturing gradient gel electrophoresis approach to assess Fusarium diversity in asparagus. Journal of Microbiological Methods 60: 143-154


  • Dumas-Gaudot E., B. Valot, G. Bestel-Corre, G. Recorbet, M. St-Arnaud, B. Fontaine, M. Dieu, M. Raes, R.S. Saravanan, S. Gianinazzi. 2004. Proteomics as a way to identify extra-radicular fungal proteins from Glomus intraradices – Ri-T-DNA carrot root mycorrhizas. FEMS Microbiol. Ecol. 48: 401-411
  • Filion, M., R.C. Hamelin, L. Bernier & M. St-Arnaud. 2004. Molecular profiling of rhizosphere microbial communities associated with healthy and diseased black spruce (Picea mariana) seedlings grown in a nursery. Applied and Environmental Microbiology 70: 3541-3551
  • Toussaint, J.-P., M. St-Arnaud, C. Charest. 2004. Nitrogen transfer and assimilation between the arbuscular mycorrhizal fungus Glomus intraradices Schenck & Smith and Ri T-DNA roots of Daucus carota L. in an in vitro compartmented system. Canadian Journal of Microbiology 50: 251-260


  • Filion, M., M. St-Arnaud & S.H. Jabaji-Hare. 2003. Direct quantification of fungal DNA from soil substrate using real-time PCR. Journal of Microbiological Methods 53: 67-76
  • Filion, M., M. St-Arnaud & S.H. Jabaji-Hare. 2003. Quantification of Fusarium solani f.sp. phaseoli in mycorrhizal bean plants and surrounding mycorrhizosphere soil using real-time polymerase chain reaction and direct isolations on selective media. Phytopathology 93: 229-235
  • Labour, K., Jolicoeur, M. & St-Arnaud, M. 2003. Arbuscular mycorrhizal responsiveness of in vitro tomato root lines is not correlated to growth rate and nutrients uptake. Canadian Journal of Botany 81: 645-656
  • Vujanovic, V., C. Hamel, S.H. Jabaji-Hare & M. St-Arnaud. 2003. First report of root rot on Asparagus caused by Phytophthora megasperma in Canada. Plant Disease 87: 447. DOI: 10.1094/PDIS.2003.87.4.447A
    (consultez ici)
  • Vujanovic, V., C. Hamel, S.H. Jabaji-Hare, M. St-Arnaud. 2003. A new species of Pseudorobillarda from an asparagus field in Québec, Canada. Mycotaxon 87: 351-357.
  • Vujanovic V, Mailloux G, Hamel C., St-Arnaud M. 2003. Impudencia crioceris, a new genus and species of dematiaceous hyphomycetes on two Crioceris insects in Québec, Canada. Mycotaxon 88: 233-238
  • Vujanovic, V., M. St-Arnaud. 2003. A new species of Pseudorobillarda, an endophyte from Thuja occidentalis in Canada, and a key to the species. Mycologia 95: 955-958.


  • Vujanovic, V., C. Hamel, S. Jabaji-Hare & M. St-Arnaud. 2002. Development of a selective myclobutanil agar medium (MBA) for the isolation of Fusarium species from asparagus fields. Canadian Journal of Microbiology 48: 841-847
  • Fortin, J.A., G. Bécard, S. Declerck, Y. Dalpé, M. St-Arnaud, A. Coughland & Y. Piché. 2002. Arbuscular mycorrhiza on root-organ cultures. Canadian Journal of Botany 80: 1-20
  • Guillon, C., M. St-Arnaud, C. Hamel & S.H. Jabaji-Hare. 2002. Differential and systemic alteration of defence-related gene transcript levels in mycorrhizal bean plants infected with R. solani. Canadian Journal of Botany 80: 305-315
  • Kosuta, S., C. Hamel, Y. Dalpé & M. St-Arnaud. 2002. Copper release from chemical root-control baskets in hardwood tree production. Journal of Environmental Quality 31: 910-916


  • Filion, M., M. St-Arnaud, C. Guillon, C. Hamel & S.H. Jabaji-Hare. 2001. Suitability of Glomus intraradices in vitro-produced spores and root segment inoculum for the establishment of a mycorrhizosphere in an experimental microcosm. Canadian Journal of Botany 79: 879-885
  • Vujanovic, V., M. St-Arnaud. 2001. Pine crown-shapes relationship with microfungal communities: Evaluation for urban landscape management. In L’Arbre 2000 The tree. Sous la direction de Michel Labrecque. Collection Collectif, Isabelle Quentin Eds. Montréal. pp. 361-363
  • Vujanovic, V., M. St-Arnaud. 2001. First report of Cryptocline taxicola infecting pacific yew (Taxus brevifolia). Plant Disease 85 (8): 922. DOI: 10.1094/PDIS.2001.85.8.922C
    (consultez ici)
  • Vujanovic, V. & M. St-Arnaud. 2001. Leptomelanconium abietis sp. nov. on needles of Abies balsamea. Mycologia 93: 212-215
  • Vujanovic, V., M. St-Arnaud. 2001. Pathogenic fungal species on balsam fir in southern Quebec. Can. Plant Disease Survey 81: 152-153
  • Vujanovic, V., M. St-Arnaud. 2001. Pathogen biodiversity in pine tree collections under urban ecological conditions, Québec. Canadian Plant Disease Survey 81: 166-168


  • Vujanovic, V., M. St-Arnaud, D. Barabé & G. Thibeault. 2000. Viability testing of orchid seed and the promotion of colouration and germination. Annals of Botany 86: 79-86
  • Vujanovic, V., M. St-Arnaud, D. Barabé & G. Thibeault. 2000. Phialocephala victorinii sp. nov. endophyte of Cypripedium parviflorum. Mycologia 92: 571-576
  • Vujanovic, V., M. St-Arnaud & P. Neumann. 2000. Susceptibility of cones and seeds to fungal infection in a pine (Pinus spp.) collection. Forest Pathology 30: 305-320


  • Filion, M., M. St-Arnaud, J.A. Fortin 1999. Direct interaction between the arbuscular mycorrhizal fungus Glomus intraradices and different rhizosphere microorganisms. New Phytologist 141: 525-533
  • Vimard, B., M. St-Arnaud, V. Furlan & J.A. Fortin. 1999. Colonization potential of in vitro-produced arbuscular mycorrhizal fungus spores as compared with a root-segment-and-soil inoculum from open pot culture. Mycorrhiza 8: 335-338
  • Vujanovic, V., St-Arnaud, M., Charlebois, D. & Fortin, E. 1999. First report of Ceratocystis fimbriata infecting balsam poplar (Populus balsamifera). Plant Disease 83 (9): 879. DOI: 10.1094/PDIS.1999.83.9.879A
    (consultez ici)
  • Vujanovic, V., M. St-Arnaud, P. Neumann, J.A. Fortin & J. Brisson. 1999. A new species Polynema murii on Fagus grandifolia. Mycologia 91: 136-140
  • Vujanovic, V., A. Cogliastro, M. St-Arnaud, P. Neumann & D. Gagnon. 1999. First report of Fusarium solani canker and wilt symptoms on Red Oak (Quercus rubra) in Quebec, Canada. Plant Disease 83: 78. DOI: 10.1094/PDIS.1999.83.1.78B
    (consultez ici)


  • Hamel, C., St-Arnaud, M. 1998. Interaction between plants through arbuscular mycorrhiza and its relation with other soil organisms. pp. 9-20 In: Zulueta Rodrígez R, Escalona Aguilar MA, Trejo Aguilar D (Eds). Avances de la investigación micorrízica en México. Universidad Veracruzana, Xalapa, Mexico. 284 pp
  • Vujanovic, V., M. St-Arnaud & P. Neumann. 1998. New hosts for Choanatiara lunata. Canadian Journal of Plant Pathology 20: 319-323
  • Vujanovic, V., M. St-Arnaud & P. Neumann. 1998. Première mention du Marssonina salicicola sur des saules pleureurs au Québec. Phytoprotection 79: 87-91
  • Vujanovic, V., M. St-Arnaud & P. Neumann. 1998. First report of Naemacyclus fimbriatus infecting Pitch Pine (Pinus rigida). Plant Disease 82: 959
  • Vujanovic, V., St-Arnaud, M. & P. Neumann. 1998. Seven new Pinus hosts for Strasseria geniculata (Berk. & Br.) Höhn. pp. 48-52 In Laflamme, G., Bérubé, J.A., Hamelin, R.C. Foliage, shoot and stem diseases of trees. Proceedings of the IUFRO WP 7.02.02 Meeting, Québec City, May 25-31 1997. Information Report LAU-X-122, Canadian Forest Service, Sainte-Foy
  • Vujanovic, V., M. St-Arnaud, P. Neumann & J.A. Fortin. 1998. Diarimella laurentidae anam. – sp. nov. from Québec. Canadian Journal of Botany 76: 2037-2041


  • St-Arnaud, M., Hamel, B. Vimard, C., Caron, M. & J.A. Fortin. 1997. Inhibition of Fusarium oxysporum f. sp. dianthi in the nonVAM species Dianthus caryophyllus by co-culture with Tagetes patula companion plants colonized by Glomus intraradices. Canadian Journal of Botany 75: 998-1005


  • St-Arnaud, M., Hamel, B. Vimard, C., Caron, M. & J.A. Fortin. 1996. Enhanced hyphal and spore production of the arbuscular mycorrhizal fungus Glomus intraradices in an in vitro system in the absence of host roots. Mycological Research 100: 328-332


  • Barabé, D., S. Daigle, M. Labrecque & M. St-Arnaud. 1995. Allometry in the histogenesis of Prunus fruits (Rosaceae). Canadian Journal of Botany 73: 299-306)
  • St-Arnaud, M., Hamel, C., Caron, M. & J.A. Fortin. 1995. Endomycorhizes VA et sensibilité des plantes aux maladies: synthèse de la littérature et mécanismes d’interaction potentiels. pp.51-87 Dans Fortin, J.A., C. Charest et Y. Piché (Éds.) La symbiose mycorhizienne – État des connaissances. Éditions Orbis, Frelighsburg, Québec, Canada.
  • St-Arnaud, M., Hamel, B. Vimard, C., Caron, M. & J.A. Fortin. 1995. Altered growth of Fusarium oxysporum f.sp. chrysanthemi in an in vitro dual culture system with the vesicular arbuscular mycorrhizal fungus Glomus intraradices growing on Daucus carota transformed roots. Mycorrhiza 5: 431-438.


  • Benhamou, N., J.A. Fortin, C. Hamel, M. St-Arnaud & A. Shatilla. 1994. Resistance responses of mycorrhizal Ri T-DNA transformed carrot roots to infection by Fusarium oxysporum f. sp. chrysanthemi. Phytopathology 84: 958-968
  • Lauzer, D., M. St-Arnaud & D. Barabé. 1994. Tetrazolium staining and in vitro germination of mature seeds of Cypripedium acaule (Orchidaceae). Lindleyana 9: 197-204
  • St-Arnaud, M., C. Hamel, M. Caron & J.A. Fortin. 1994. Inhibition of Pythium ultimum in roots and growth substrate of mycorrhizal Tagetes patula colonized with Glomus intraradices. Canadian Journal of Plant Pathology 16: 187-194


  • Barabé D, M St-Arnaud, D Lauzer. 1993. Sur la nature des protocormes d’Orchidées (Orchidaceae). C.R. Acad. Sci. Paris, t. 316, Série III: 139-144.


  • St-Arnaud M, D Lauzer, D Barabé. 1992. In vitro germination and early growth of seedlings of Cypripedium acaule (Orchidaceae). Lindleyana 7: 22-27.


  • St-Arnaud M, P Neumann. 1990. Évaluation au Québec d’un modèle de prédiction de la période annuelle d’éjection des ascopores du Venturia inaequalis. Phytoprotection 71: 17 23.
  • St-Arnaud M, P Neumann. 1990. Un modèle d’estimation de l’état d’avancement de la période d’infection primaire par le Venturia inaequalis en vergers de pommiers. Phytoprotection 71: 73-84.


  • St-Arnaud M, D Barabé. 1989. Anatomie florale du Cypripedium acaule Aiton (Orchidaceae). Phytomorphology 39: 81-92.
  • St-Arnaud M, D Barabé. 1989. Comparative analysis of the flower vascularization of some Cypripedium species (Orchidaceae). Lindleyana 4: 146-153.


  • St-Arnaud M, G Vincent. 1988. Influence of de-icing salt on the germination and growth of five potentially utilizable plants for median turfing in northern climate. Journal of Environmental Horticulture 6: 118-121.


  • St-Arnaud M, LJ Coulombe, P Neumann, A Jacob. 1985. La maturation et l’éjection des ascospores de Venturia inaequalis à Frelighsburg (Québec) en relation avec la température et la pluie. Phytoprotection 66 : 153-161.


  • St-Arnaud, M., L.J. Coulombe, P. Neumann & A. Jacob. 1984. Étude de la maturation et de l’éjection des ascospores de Venturia inaequalis (Cke) Wint. en conditions naturelles. pp. 103 111 Dans Vincent, C. et N.J. Bostonian (éds.). La phytoprotection des vergers de pommiers au Québec, Bulletin technique No 19, Station de recherche d’Agriculture Canada, St-Jean-sur-Richelieu.