Oualid (Walid) Ellouz, Ph.D.

Image Oualid (Walid) Ellouz
Research Scientist

Plant Pathology

Current research and/or projects

  • Emerging fruit tree decline in Canada: identification and characterization of the causal agents and epidemiological studies.
  • Analyzing the microbiome of mature apple in different geographical regions.
  • Bacteriophage mediated control of Grape Crown gall caused by Agrobacterium vitis.

Professional activities / interests

  • Disease ecology, pathogen detection and integrated management strategies.
  • Etiology and epidemiology of root, foliar and trunk diseases of grapevine, pome, nut and tender fruit trees.
  • Microbiome of fruit and vegetables crops.
  • Postharvest diseases of fruits and vegetables.

Education and awards

  • PhD., Biological Sciences, University of Montreal, QC, Canada.

Key publications

  1. Ellouze, W., Griffiths, J. (2021) AAFC research update on sudden apple decline and fruit tree decline disorders in Ontario. Orchard Network Newsletter, February 2021. p. 16-19.

    2021 - View publication details

  2. Ellouze, W.; Mishra, V.; Howard, R.J.; Ling, K.-S.; Zhang, W. Preliminary study on the control of Cucumber green mottle mosaic virus in commercial greenhouses using agricultural disinfectants and resistant cucumber varieties. Agronomy 2020, 10, 1879.

    2020 - View publication details

  3. Ellouze, W., Nesbitt, D., Parcey, M., Gayder, S., Marchand, G., Svircev, A.M., Tambong, J.T. (2020). Draft Genome Sequences of Hazelnut-Associated Pseudomonas Strains Isolated in Ontario, Canada, 9(45), http://dx.doi.org/10.1128/MRA.01021-20

    2020 - View publication details

  4. Griffiths, J., Ellouze, W. (2019) Research activities working towards identifying causes of tree fruit decline. Orchard Network Newsletter, December 2019. p. 6-7.

    2019 - View publication details

  5. Nguyen HDT, Grunwald NJ, Abad ZG, Martin FN, Crouch J, Hambleton S, Dettman J, Liu M, Harris LJ, Castlebury L, Salagado-Salazar C, Cowger C, Ellouz O, Mollov D, Fall ML, Ling K, Griffifths J, Mahaffee W, Chen W, Sultata T, Yu Q, Carta LK, Skantar AM, Tambong J, Rogers E, Li S, Dumonceaux TJ, Widmer TL. The 2019 AAFC-USDA meeting on genotyping and monitoring of high-risk plant pathogens.

    2019 - View publication details

  6. Griffiths, J., Lofano, A., Ellouze, W., Wang, A. (2019) Apple and apricot decline in Ontario. Plant Canada 2019, July 7-10. University of Guelph, Guelph, Ontario, Canada.

    2019 - View publication details

  7. Ellouze, W., Hamel, C., Singh, A.K., Mishra, V., DePauw, R.M., Knox, R.E. 2018. Abundance of the arbuscular mycorrhizal fungal taxa associated with the roots and rhizosphere soil of different durum wheat cultivars in the Canadian prairie. Canadian Journal of Microbiology 64:527-536.

    2018 - View publication details

  8. Ellouze, W. (2018) Approaches to manage Cucumber Green Mottle Mosaic Virus in commercial greenhouses. The International CGMMV working group meeting, July 27th. Pre-meeting activity of the International Congress of Plant Pathology (ICPP-2018). The Hilton Boston Back Bay Hotel, Boston, USA.

    2018 - View publication details

  9. Ellouze, W., Mishra, V., Howard, R.J. (2018) Efficacy of agricultural disinfectants for Cucumber Green Mottle Mosaic Virus decontamination in a commercial vegetable greenhouse. Canadian Journal of Plant Pathology 40:133-134.

    2018 - View publication details

  10. Mishra V, Ellouze W, Howard RJ (2018) Utility of Arbuscular Mycorrhizal Fungi for Improved Production and Disease Mitigation in Organic and Hydroponic Greenhouse Crops. J Hortic 5: 237. doi: 10.4172/2376-0354.1000237

    2018 - View publication details

Research facility

1391 Sandford Street
London, ON N5V 4T3


Member, Canadian Phytopathological Society, American Phytopathological Society, Canadian Society for Horticultural Science and Canadian Society of Plant Biologists.