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Ph.D. in Plant Pathology, Auburn University, 1999
M.S. in Plant Pathology, Beijing Agricultural University, China, 1988
Research Interests and Current Efforts
Ecology, epidemiology and management of diseases on vegetable and other important crops. Research efforts focus on diseases caused by oomycetes and other pathogens such as Phytophthora blight, black shank, Fusarium wilt, bacterial wilt, bacterial speck and spot, southern blight, downy mildew, and gummy stem blight. One of my primary objectives is to develop integrated approaches for management of vegetable diseases, including the use of cultural practices, host resistance, chemicals, biologicals, and other ecological and genetic manipulations. Research in my lab is also directed towards detection, identification, and analysis of genetic diversity of plant pathogens.
Selected Recent Publications
Li, Y., Cai, Y., Liang, Y., Ji, P., and Xu, L. 2019. Assessment of antifungal activities of a biocontrol bacterium BA17 for managing postharvest gray mold of green bean caused by Botrytis cinerea. Postharvest Biol. Technol. (in press)
Hua, G. K. H., Ali, E., and Ji, P. 2019. Characterization of bacterial pathogens causing fruit soft rot and stem blight of bell pepper in Georgia, USA. J. Plant Pathol. (in press)
Chen, J., Lu, Z., An, Z., Ji, P., and Liu, X. 2019. Antibacterial activities of sophorolipids and nisin and their combination against foodborne pathogen Staphylococcus aureus. Eur. J. Lipid Sci. Technol. (in press)
Hua, G. K. H., Wang, L., Chen, J., and Ji, P. 2019. Biological control of Fusarium wilt on watermelon by fluorescent pseudomonads. Biocontrol Sci. Tech. (in press)
Keinath, A. P., Coolong, T. W., Lanier, J. D., and Ji, P. 2019. Managing Fusarium wilt of watermelon with delayed transplanting and cultivar resistance. Plant Dis. 103:44-50.
Milner, H., Ji, P., Sabula, M., and Wu, T. 2019. Quantitative polymerase chain reaction (Q-PCR) and fluorescent in situ hybridization (FISH) detection of soilborne pathogen Sclerotium rolfsii. Appl. Soil Ecol. 136:86-92.
Li, Y., Jiang, W., Zhang, Q., Ali, E., Ji, P., Pan, H., and Sun, L. 2019. Population structure and genetic diversity of Setosphaeria turcica from corn in Heilongjiang province, China. J. Appl. Microbiol. 127:1814-1823.
Petkar, A., Shultz-Harris, K., Wang, H., Brewer, M., Sumabat, L., and Ji, P. 2019. Genetic and phenotypic diversity of Fusarium oxysporum f. sp. niveum populations from watermelon in the southeastern United States. PLOS ONE 14(7): e0219821.
Liu, C., Ji, P., and Timper, P. 2019. Maternal stress reduces the susceptibility of root-knot nematodes to Pasteuria penetrans. J. Nematol. 51: E2019-040.
Waliullah, S., Hudson, O., Oliver, J. E., Brannen, P. M., Ji, P., and Ali, E. 2019. Comparative analysis of different molecular and serological methods for detection of Xylella fastidiosa in blueberry. PLOS ONE 14(9): e0221903.
Hua, G. K. H., Timper, P., and Ji, P. 2019. Meloidogyne incognita intensifies the severity of Fusarium wilt on watermelon caused by Fusarium oxysporum f. sp. niveum. Can. J. Plant Pathol. 41:261-269.
Li, Y., Jiang, D., Xu, L., Zhang, S., Ji, P., Pan, H., Jiang, B., and Shen, Z. 2019. Evaluation of diversity and resistance of maize varieties to Fusarium spp. causing ear rot in maize under conditions of natural infection. Czech J. Genet. Plant Breed. 55 (4):131–137.
Li, Y. G., Jiang, W. Y., Jiang, D., Wang, R. T., Tian, S., Ji, P., and Jiang, B. W. 2019. First report of fruit rot on postharvest pumpkin caused by Fusarium acuminatum in China. Plant Dis. 103:1035.
Li, S., Musungu, B., Lightfoot, D., and Ji, P. 2018. The interactomic analysis reveals pathogenic protein networks in Phomopsis longicolla underlying seed decay of soybean. Frontiers in Genetics, 9:104. doi: 10.3389/fgene.2018.00104.
Yang, L., Fountain, J. C., Ji, P., Ni, X., Chen, S., Lee, R. D., Kemerait, R. C., and Guo, B. 2018. Deciphering drought-induced metabolic responses and regulation in developing maize kernels. Plant Biotechnol. J. 16:1616–1628.
Li, Y., Zhao, T., Hua, G. K. H, Xu, L., Liu, J., Li, S., Huang, H., and Ji, P. 2018. Pathogenicity and genetic diversity of Fusarium oxysporum causing soybean root rot in northeast China. J. Agric. Sci. 10(5):13-23.
Amaradasa, B. S., Beckham, K., Dufault, N., Sanchez, T., Sarigul, T., Iriarte, F., Paret, M., and Ji, P. 2018. First report of Fusarium oxysporum f. sp. niveum race 3 causing wilt of watermelon in Florida, USA. Plant Dis. 102:1029.
Li, Y., Song, X., Wang, X., Zhang, H., Tian, S., and Ji, P. 2018. First report of fruit rot of watermelon caused by Fusarium equiseti in China. Plant Dis. 102:1852.
Li, Y., Harris-Shultz, K., Wang, H., Wadl, P. A., and Ji, P. 2017. Population structure and genetic diversity of Phytophthora nicotianae from tobacco in Georgia. Plant Dis. 101:1113-1118.
Qu, T., Gao, S., Li, J., Hao, J. J., and Ji, P. 2017. Synthesis and antifungal activity of 2-allylphenol derivatives against fungal plant pathogens. Pestic. Biochem. Phys. 135:47-51.
Petkar, A., and Ji, P. 2017. Infection courts in watermelon plants leading to seed infestation by Fusarium oxysporum f. sp. niveum. Phytopathology 107:828-833.
Liu, C., Timper, P., Ji, P., Joseph, S., and Mekete, T. 2017. Influence of root exudates and soil on attachment of Pasteuria penetrans to Meloidogyne arenaria. J. Nematol. 49:304-310.
Petkar, A., Langston, D. B., Buck, J. W., Stevenson, K. L., and Ji, P. 2017. Sensitivity of Fusarium oxysporum f. sp. niveum to prothioconazole and thiophanate-methyl and gene mutation conferring resistance to thiophanate-methyl. Plant Dis. 101:366-371.
Kousik, C. S., Ji, P., Egel, D. S., and Quesada-Ocampo, L. M. 2017. Fungicide rotation programs for managing Phytophthora fruit rot of watermelon in southeastern United States. Plant Health Prog. 18:28-34.