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Dr. Young-Ki Jo

Jo, Dr. Young-Ki
Dr. Young-Ki Jo
Professor and Extension Specialist, Turfgrass, Rice and Pecan
113D PLPM Building
Undergraduate Education
B.S., Biology Education. Seoul National University, South Korea, 1996
Graduate Education
M.S., Entomology. Michigan State University, East Lansing, 2000
Ph.D., Plant Pathology. The Ohio State University, Columbus, 2005

Research Emphasis

The principal focus of my research and extension deals with the management of diseases associated with turfgrass, rice, and pecan. Studies have been conducted to improve diagnostics of causal pathogens, understand epidemiology of pathogens and develop effective disease management strategies.

Recent Publications

Authorship: *Graduate student under my supervision, **Research assistant under my supervision, and ***Post-doc under my supervision.


  1. M. Zidek*, L. Yu**, M. Jochum*, Y. Jo. 2021. Complexity of Gaeumannomyces species causing take-all root rot of St. Augustinegrass in Texas. Mycologia 113:3, 599-611
  2. Hilton A*, Jeong M, Hsu J-H, Cao F, Choi W, Wang X, Yu C, Jo Y. 2021. Thermal treatment using microwave irradiation for the phytosanitation of Xylella fastidiosa in pecan graftwood. PLoS ONE 16(1): e0244758
  3. S.P. Gaire*, X,-G. Zhou, Y. Jo, and J. Shi. 2020. First report of Rhizoctonia solani AG-4 causing seedling disease in rice. Plant Disease 104:1546
  4. R.L. Davis, J.K. Greene, F. Dou, Y. Jo, and T.M. Chappell. 2020. A practical application of unsupervised machine learning for analyzing plant image data collected using unmanned aircraft systems. Agronomy 10:633
  5. Hilton A*, X. Wang, M. Zhang, K. Cervantes, J. French, J. J. Randall, C.H. Bock, L.J. Grauke, and Y. Jo. 2020. Improved methods for detecting Xylella fastidiosa in pecan and related Carya species. European Journal of Plant Pathology 157:899-918
  6. Jochum, M.*, K. McWilliams*, E. Borrego, M. Kolomiets, G. Niu, E. Pierson, and Y. Jo. 2019. Bioprospecting plant growth-promoting rhizobacteria that mitigate drought stress in grasses. Frontiers in Microbiology 10:2106
  7. Jochum, M.*, K. McWilliams*, E.A. Pierson, Y.-K. Jo. 2019. Host-mediated microbiome engineering (HMME) of drought tolerance in the wheat rhizosphere. PLoS ONE 14:e0225933. Top 10% most cited PLoS ONE papers published in 2019. Cited 15 times as of July 2021
  8. Jochum, M.*, Moncayo, L.*, and Jo, Y. 2018. Vertical semi-closed airlift photo bioreactor for autotrophic microalgal cultivation for rice. PLoS ONE 13:e0203456
  9. Bock, C., Oliver, J., Chen, C., Hotchkiss, M., Stevenson, K., Wang, X., Grauke, L.J., Hilton, A.*, Jo, Y., Randall, J. 2018. Pecan bacterial leaf scorch, caused by Xylella fastidiosa, is endemic in Georgia pecan orchards. Plant Health Progress 19:284-287. Selected as the Editor’s Pick at the Plant Management Network Newsletter, Issue 190, November 29, 2018
  10. Handiseni, M.*, Zhou, X., and Jo, Y. 2017. Soil amended with Brassica juncea plant tissue reduces viability, aggressiveness, and sclerotia formation of Rhizoctonia solani AG1-IA towards rice. Crop Protection 100:77-80
  11. Hilton, A.*, Jo, Y., Cervantes, K., Stamler, R., French, J. M., Heerema, R. J., Goldberg, N. P., Sherman, J., Randall, J., Wang, X., and Grauke, L. J. 2017. First report of pecan bacterial leaf scorch caused by Xylella fastidiosa in pecan (Carya illinoinensis) in Arizona, New Mexico, California, and Texas. Plant Disease 101:1949
  12. Handiseni, M.*, Cromwell, W.**, Zidek, M.*, Zhou, X., and Jo, Y. 2017. Use of brassicaceous seed meal for managing root-knot nematode in bermudagrass. Nematropica 47:55-62
  13. Tomaso-Peterson, M., Jo, Y., Vines, P., and Hoffmann, F. 2016. Curvularia malina sp. nov. incites a new disease of warm-season turfgrasses in the southeastern United States. Mycologia 108:915-924
  14. Handiseni, M.*, Jo, Y., and Zhou, X. 2016. Screening brassicaceous plants as biofumigants for management of Rhizoctonia solani AG1-IA. Plant Disease 100:758-763