College of Agricultural, Human, and Natural Resource Sciences

Department of Plant Pathology

Achour Amiri

Assistant Professor

Research Specialty and Interests

Investigate diseases of major tree fruit grown in Washington State and Pacific North West with a focus on applied epidemiology of major pathogens in orchards and its linkage to post-harvest disease problems. Develop rational IPM approaches for tree fruit diseases management. Use of standard and molecular tools for accurate risk assessment related to fungicide resistance development and management.

Extension efforts of the program are dedicated to develop and promote innovative and effective methods and technologies to provide appropriate information for multiples stakeholders.


  • Ph.D. University of Pierre et Marie Curie, Paris, France
  • M.Sc. Gembloux Agricultural University, Gembloux, Belgium
  • Engineering Degree, National Institute of Agronomy, Mostaganem, Algeria

Professional Experience

  • Postdoctoral Research Associate, University of Florida, 2011-2014.
  • Postdoctoral Assistant, Clemson University, 2007-2010.


Employment and Graduate Student Opportunities

If you like fungi and bacteria and are interested in tree fruit pathology, postharvest diseases, and applied epidemiology and you are excited about the idea of working in the number one production region of apple, pear and cherry in the world, you are very welcome to contact me.

For more information on graduate studies in the Department of Plant Pathology at Washington State University go to:

Selected Publications

  • Amiri A, Mulvaney K.A, Pandit L.K. 2017. First report of Penicillium expansum isolates with low levels of resistance to fludioxonil from commercial apple packinghouses in Washington State. Plant Dis. (First Look).
  • Amiri A, Mulvaney K.A, Pandit L.K, De Angelis R.D. 2017. First report of resistance to fluxapyroxad and fluopyram in Botrytis cinerea From Commercial Apple orchards in Washington State. Plant Dis.
  • Amiri A, Hawkins, A.W, Mulvaney K.A. 2017. Investigation into fitness, virulence, and fungicide sensitivity of Lambertella corni-maris causing yellow rot on apple. Plant Dis. (In Press).
  • Forcelini B. B, Seijo T.E, Amiri A, Peres, N.A. 2016. Resistance in strawberry isolates of Colletotrichum acutatum from Florida to quinone-outside inhibitor fungicides. Plant Dis. 100:2050-2056.
  • Amiri A, Onofre R, N.A. Peres. 2016. First report of Amphobotrytis cinerea causing gray mold on strawberry from Florida. Plant Dis. 5:1007.
  • Amiri A, and Peres NA. 2014. Diversity in the erg27 gene of Botrytis cinerea defines different levels of resistance to the hydroxyanilide fenhexamid across strawberry fields in Florida. Plant Dis. 98: 98:1131-1137.
  • Amiri A, Zuniga AI, Mertely J, and Peres NA. 2014. First report on resistance to pyraclostrobin, thiophanate-methyl and boscalid in Botrytis cinerea from eucalyptus seedlings in Florida greenhouses. Plant Dis. 98:851.
  • Fernández-Ortuño D, Grabke, A, Bryson, PK, Amiri, A, Peres, NA, and Schnabel, G. 2014. Fungicide Resistance Profiles in Botrytis cinerea from Southern State Strawberry fields. Plant Disease. 98:825-833.
  • Grabke A, Fernández-Ortuño D, Amiri A, Li X, Peres N A, Smith P, and Schnabel G. 2014. Phenotypic and genotypic characterization of iprodione resistant Botrytis cinerea from strawberry and blackberry. Phytopathology. 104:396-402.
  • Amiri A, Heath SM, Peres NA. 2014. Resistance to fluopyram, fluxapyroxad and penthiopyrad in Botrytis cinerea field isolates from strawberry. Plant Dis. 98: 532-539.
  • Amiri A, Heath SM, Peres NA. 2013. Phenotypic characterization of multifungicide resistance in Botrytis cinerea isolates from Strawberry Fields in Florida. Plant Dis. 97:393-401.
  • Amiri A, Schnabel G. 2012. Persistence of propiconazole in peach roots and efficacy against Armillaria root rot under field conditions. J. Fruit Science. 12-4:437-449.
  • Baert K, Devlieghere F, Amiri A, De Meulenaer B. 2012. Evaluation of strategies for reducing patulin contamination of apple juice using a farm to fork risk assessment model. Int. J. Food Microbiol. 154: 119-129.
  • Amiri A, Bompeix G. 2011. Control of Penicillium expansum with potassium phosphite and heat treatment. Crop Protection 30:222-227.
  • Amiri A, Brannen, P.M, Schnabel G. 2010. Reduced sensitivity in Monilinia fructicola field isolates from South Carolina and Georgia to respiration inhibitor fungicides. Plant Disease 94:737-743.

Pic apple tree-Sept 2015-c

WSU Tree Fruit Research and Extension Center (TFREC)

1100 N Western Avenue
Wenatchee, WA, 98801

Tel.: 509-663-8181 ext 268 (office) / 228 (Lab)

Department of Plant Pathology, PO Box 646430, Washington State University, Pullman WA 99164-6430, 509-335-9541, Contact Us
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