Roy Davis

Postdoctoral Research & Adjunct Professor

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Professional Credentials

• PhD, Plant Pathology & Microbiology, 2022, Texas A&M University
• BS, Biological Sciences, 2015, Campbell University

Areas of Interest

• Epidemiology
• Population Genetics

Research Projects/Interests

I am currently working in Dr. Everhart’s lab on a project related to the population genetics and epidemiology of Alternaria brassicicola, a fungal pathogen that causes Alternaria blight and head rot of broccoli. My main focus is describing how populations of this pathogen vary between states, within states, and within the same field.

Publications & Awards

Davis II, R. L., Cerritos-Garcia, D. G., Martin, A. G., Fenton Jr., M. F., Patel, K., Nieto-Lopez, E., Saint-Preux, C., da Silva, M. B., Betaw, H., Hoepting, C., Rideout, S., Langston, D., Smart, C. D., Dutta, B., and Everhart, S. E. 2025. Determining the causal agent of Alternaria leaf blight and head rot affecting broccoli in the Eastern United States. Plant Dis. Doi: 10.1094/PDIS-01-25-0117-SR.

Davis II, R. L., Hayter, J. T., Marlino, M. L., Isakeit, T., Chappell, T. M. 2023. Pathogenic and saprophytic growth rates of Fusarium oxysporum f. sp. vasinfectum interact to affect variation in inoculum density and interannual infection risk. Phytopath. Doi: 10.1094/PHYTO-11-22-0407-R.

Davis II, R. L., Isakeit, T., Chappell, T. M. 2022. DNA-based quantification of Fusarium oxysporum f. sp. vasinfectum in environmental soils to describe spatial variation in inoculum density. Plant Dis. Doi: 10.1094/PDIS-08-21-1664-RE.

Davis II, R. L., Greene, J. K., Dou, F., Jo, Y. K., and Chappell, T. M. 2020. A practical application of unsupervised machine learning for analyzing plant image data collected using unmanned aircraft systems. Doi: 10.3390/agronomy10050633.

Not accepting graduate students.