John F. Murphy

Professor Emeritus, Plant Pathology

(334) 844-1954 


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Entomology & Plant Pathology
Auburn Univ, AL 36849



  • 1988 Ph.D., University of Illinois at Urbana-Champaign (Department of Plant Pathology)
  • 1984 M.S., Clemson University (Department of Plant Pathology & Physiology)
  • 1981 B.S., Springfield College, Springfield, MA (Department of Biology)


  • September 2004-Present Professor, Department of Entomology & Plant Pathology, Auburn
    University, AL
  • October 1999-August 2004 Associate Professor, Department of Entomology & Plant Pathology,
    Auburn University, AL
  • July 1994-September 1999 Assistant Professor, Department of Plant Pathology, Auburn University,
  • October 1991-July 1994 Postdoctoral Research Associate, Department of Plant Breeding and
    Genetics, Cornell University, Ithaca, NY
  • January 1988-October 1991 Postdoctoral Fellow, Department of Plant Pathology, University of
    Kentucky, Lexington, KY



  • Nubia Velásquez (2008-2011)
  • Jongkit Masiri, Ph.D. student (2006-2010)
  • Willis Hatcher III, M.Ag. student (2009)
  • Clint Warren, M.S. student (2000-2002)
  • Hernan Garcia-Ruiz, M.S. student (1998-2000)
  • Pamela Hughes, M.S. student (1995-1997)
  • Michael Guerini, M.S. student (1995-1997)
  • Mahefa Andrianifahanana, M.S. student (1994-1996)



Plant Virology. Studies focus on the nature of virus disease symptoms and resistance to virus infection, and development of management strategies for insect-borne plant viruses.



  • Plant Virology
  • Departmental seminar



  • Pernezny, K., Roberts, P., Murphy, J.F., and Goldberg, N. 2003. Compendium of Pepper Diseases. American Phytopathological Society Press, St. Paul, MN.
  • Chapters within:
    Murphy, J.F., and Warren, C.E. Plant virus diseases, pages 23-25. Murphy, J.F. Cucumber mosaic virus, pages 29-31.Murphy, J.F., and Zitter, T.A. Pepper mottle virus, pages 33-34.


  • Murphy, J.F. 2006. Applied aspects of induced resistance to plant virus infection. In: Natural Resistance Mechanisms Of Plants To Viruses. Chapter A1, pages 1-11. Springer Publishing, Netherlands. Editors: G. Loebenstein and J.P. Carr. 532 pages.
  • Sikora, E.J., and Murphy, J.F. 2005. Identification and management of Cucumber mosaic virus in Alabama. Acta Horticulturae 695:191-194.


  • Murphy, J.F., and Morawo, T. 2017. Comparative Evaluation of Disease Induced by Three Strains of Tobacco etch virus in Capsicum annuum L. Plant Disease 101:217-223. 
  • Sikora, E.J., Murphy, J.F., and Conner, K.N. 2017. Monitoring Bean pod mottle virus and Soybean mosaic virus incidence at different soybean growth stages in Alabama. Plant Health Progress 18:166. 
  • Murphy, J.F., Masiri, J., Hadi, B.A.R., and Dute, R.R. 2016. Recovery from Cucumber mosaic virus infection for bell pepper plants does not counter negative impacts on plant growth. Journal of Phytopathology 144:840-846.
  • Murphy, J.F., Morawo, T., Monday, T., Lau, J., Foshee, W., and Fadamiro, H. 2016. Biologic formulations but not an inter-row living ground cover of rye reduced incidence of Tomato spotted wilt virus in tomato. International Journal of Vegetable Science 22:364-375.
  • Ryu, C-M, Choi, H.K., Lee, C-O, Murphy, J.F., Lee, J.K., and Kloepper, J.W. 2013. Modulation of quorum sensing in acyl-homoserine lactone-producing or -degrading tobacco plants leads to alteration of induced systemic resistance elicited by the rhizobacterium Serratia marcescens 90-166. Plant Pathology Journal 29: 182-192.
  • Perez, K., Yeam, I., Kang, B-C., Ripoll, D.R., Kim, J., Murphy, J.F., and Jahn, M.M. 2012. Tobacco etch virus infectivity in Capsicum spp. is determined by a maximum of three amino acids in the viral virulence determinant VPg. Molecular Plant-Microbe Interactions 25:1562-1573.
  • Hadi, B.A.R., Flanders, K.L., Bowen, K.L., Murphy, J.F., and Blount, A.R.  2012. Survey of Barley Yellow Dwarf Virusand Cereal Yellow Dwarf Virus on Three Perennial Pasture Grasses in Florida.  Journal of Entomological Science 47:35-43.
  • Velasquez, N., Murphy, J.F., and Suh, S-J.  2012.  Electroporetic transfection of pepper protoplasts with plant Potyviruses.  Journal of Virological Methods 179:154-160.
  • Sikora, E.J., Murphy, J.F., Lawrence, K.S., and Mullen, J.M. 2011. Survey of fungal, nematode and virus diseases of soybean in Alabama. Plant Health Progress doi:10.1094/PHP-2011-1227-01-RS
  • Hadi, B.A.R., Flanders, K., Murphy, J.F., Bowen, K., and Halbert, S. 2011. Species Composition of the Aphid Vectors (Hemiptera: Aphididae) of Barley yellow dwarf virus and Cereal yellow dwarf virus in Alabama and Western Florida.Journal of Economic Entomology 104: 1167-1173.
  • Masiri, J., Velasquez, N., and Murphy, J.F. 2011. Cucumber mosaic virus 2b-deficient mutant has a limited, symptomless systemic infection of bell pepper (Capsicum annuum L.).  Plant Disease 95:331-336.
  • Croxton, S.D., Foshee, III, W.G., Blythe, E.K., Murphy, J.F. and Sibley, J.L. 2011. Evaluation of selected tempera paints applied to tomatoes to reduce the occurrence of Tomato spotted wilt virus.   International Journal of Vegetable Science17:177-189.