Research Terms
Industries
1. Jones, J. B., L.E. Jackson, B. Balogh, A. Obradovic, F.B. Iriarte, and M.T. Momol. 2007. Bacteriophages for plant disease control. Annu. Rev. of Phytopathol. 45:7.1–7.18. Annual Reviews Inc. Palo Alto.
2. R. E. Stall, Jones, J. B., and G. V. Minsavage. 2009. Durability of Resistance in Tomato and Pepper to Xanthomonads Causing Bacterial Spot. 47:(In press). Annual Reviews Inc. Palo Alto.
1. Pradhanang PM, Ji P, Momol MT, Olson SM, Mayfield JL, Jones JB. 2005. Application of acibenzolar-S-methyl enhances host resistance in tomato against Ralstonia solanacearum. Plant Disease 89:989-993.
2. Ji P, Momol MT, Olson SM, Pradhanang PM, and Jones JB. 2005. Evaluation of Thymol as biofumigant for control of bacterial wilt of tomato under field conditions. Plant Disease 89 89:497-500.
3. Güven, K., J. B. Jones, M. T. Momol, and E. R. Dickstein. 2004 Phenotypic and Genetic Diversity among Pseudomonas syringae pv. phaseolicola . J. Phytopathology 152, 658–666
4. Byrne, J.M.,
5. Jones, J. B., G. H. Lacy, H. Bouzar, R. E. Stall, and N. W. Schaad. 2004. Reclassification of the xanthomonads Associated with bacterial spot disease of tomato and pepper. System. & Appl. Microbiol. 27:755-762.
6. Block, A., E. Schmelz, J. B. Jones, and H. J. Klee. 2005. Coronatine and salicylic acid: the battle between Arabidopsis and Pseudomonas for phytohormone control. Molecular Plant Pathology 6: 79–83.
7. Hert, A. P., P. D. Roberts, M. T. Momol, G. V. Minsavage, S. M. Tudor-Nelson, and J. B. Jones. 2005. Relative Importance of Bacteriocin-Like Genes in Antagonism of Xanthomonas perforans Tomato Race 3 to Xanthomonas euvesicatoria Tomato Race 1 Strains. Appl. Env. Microbiology. 71:3581-3588.
8. Obradovic, A., J. B. Jones, M. T. Momol, S. M. Olson, L. E. Jackson, B. Balogh, K. Guven, and F. B. Iriarte. 2005. Integration of Biological Control Agents and Systemic Acquired Resistance Inducers Against Bacterial Spot on Tomato. Plant Dis. 89:712-716.
9. Block, A. , Eric Schmelz, Phillip J. O'Donnell, Jeffrey B. Jones, and Harry J. Klee. 2005. Systemic Acquired Tolerance to Virulent Bacterial Pathogens in Tomato. Plant Physiol. 133: 1481-1490.
10. Basim, H., Gerald V. Minsavage, Robert E. Stall, Jaw-Fen Wang, Savita Shanker, and Jeffrey B. Jones. 2005. Characterization of a unique chromosomal copper resistance gene cluster from Xanthomonas campestris pv. vesicatoria. Appl. & Env. Microbiol 71:8284–8291.
11. Rodrigues, Fabr?cio A. Wayne M. Jurick II,
12. Ji, P., H.L. Campbell, J.W. Kloepper, J.B. Jones, T.V. Suslow, M. Wilson. 2006. Integrated biological control of bacterial speck and spot of tomato under Weld conditions using foliar biological control agents and plant growth-promoting rhizobacteria. Biological Control 36:358-367.
13. French-Monar, R. D., Jones, J. B. & Roberts, P. D. 2006. Characterization of natural populations of Phytophthora capsici associated with local weed populations in Florida vegetable farms. Plant Disease 90:345-350.
14. Ji, P., H.L. Campbell, J.W. Kloepper, J.B. Jones, T.V. Suslow, M. Wilson. 2006. Integrated biological control of bacterial speck and spot of tomato under Weld conditions using foliar biological control agents and plant growth-promoting rhizobacteria. Biological Control 36:358-367.
15. French-Monar, R. D., Jones, J. B. & Roberts, P. D. 2006. Characterization of Phytophthora capsici associated with roots of weeds on
16. French-Monar, R. D., Jones, J. B., Hanlon, E. A., and Roberts, P.D. 2006. Soil monitoring of viable inoculum of Phytophthora capsici localized in soil under vegetable production conditions in southwest
17. Gabriel, Dean W.,
18. Robinson, P., Jones, J. B. & Pernezny, K. L. 2006. Bacterial leaf spot of lettuce: Relationship of temperature to infection and potential host range of Xanthomonas campestris pv. vitians. Bacterial leaf spot of lettuce: Relationship of temperature to infection and potential host range of Xanthomonas campestris pv. vitians. 90:456-470
19. Ji, P., Allen, C., Sanchez-Perez, A.,
20. French, R., J. B. Jones, M. Ozores-Hampton, and P. D. Roberts. 2007. Survival of inoculum of Phytophthora capsici in soil through time under different soil treatments. Plant Disease. 91:593-598.
21. Obradovic, A., Jones, J. B., G. V. Minsavage, , E. R. Dickstein, and T. M. Momol. 2007. A Leaf Spot and Blight of Greenhouse Tomato Seedlings Incited by a Herbaspirillum species. Plant Disease. 91: 886-890.
22. Iriarte, F., Balogh, B., Momol, T. M., Smith, L. M.,
23. Moss, W. P., Byrne, J. M., Campbell, H. L., Ji, P., Bonas, U., Jones, J. B.,
24. Pernezny, K., R. N. Raid, J. B. Jones, and E. Dickstein 2007. First Report of a Leaf Spot Disease of Wild Rocket (Diplotaxis tenuifolia) in Florida Caused by Xanthomonas campestris pv. raphani. Plant Disease 91:1360.
25. Khalaf, Abeer, G. A. Moore, J. B. Jones, and F. G. Gmitter. 2007. New insights into the resistance of Nagami kumquat to canker disease. Physiol. and Molecular Plant Pathology 71: 240-250.
26. Balogh, B., B. I. Canteros, R. E.Stall, and J. B. Jones. 2008. Control of citrus canker and citrus bacterial spot with bacteriophages. Plant Dis. 92:1048-1052.
27. Schornack, S., G. V. Minsavage, R. E. Stall, J. B. Jones and T. Lahaye. 2008. Characterization of AvrHah1, a novel AvrBs3-like effector from Xanthomonas gardneri with virulence and avirulence activity. New Phytologist 178:546-556.
28. Schaad, N. W., E. Postnikova, A. Sechler, L. E. Claflin, A. K. Vidaver, J. B. Jones, I. Agarkova, A. Ignatov, E. Dickstein, and B. A. Ramundo. Reclassification of subspecies of Acidovorax avenae as A. avenae (Manns 1905) emend., A. cattleyae (Pavarino, 1911) comb. nov., A. citrulli (Schaad et al., 1978) comb. nov., and proposal of A. oryzae sp. nov. 31:434-446.
29. Khakvar, R., Sijam, K., Wong, M.Y., Radu, S., Jones, J., and Thong, KL. 2008. Genomic Diversity of Ralstonia solanacearum strains Isolated from Banana Farms in West Malaysia. Plant Pathol. J.. 7:162-167.
30. Roberts, P. D., M.T. Momol, L. Ritchie, S.M. Olson, J.B. Jones, and B. Balogh. 2008. Evaluation of spray programs containing famoxadone plus cymoxanil, acibenzolar-S-methyl, and Bacillus subtilis compared to copper sprays for management of bacterial spot on tomato. Crop Prot.27:1519-1526.
31. Hong, J. C., Momol, M. T., Jones, J. B., Ji, P., Olson, S. M., Allen, C., Perez, A., Pradhanang, P.,and Guven, K. 2008. Detection of Ralstonia solanacearum in irrigation ponds and aquatic weeds associated with the ponds in North Florida. Plant Dis. 92:1674-1682.
32. Rybak, Myrian, Minsavage, G. V., Stall, R. E., and Jones, J. B. 2009. Identification of Xanthomonas citri ssp. citri host specificity genes in a heterologous expression host. Molec. Plant Pathol. 10:249–262.
33. Hert, A. P., M. Marutani, M. T. Momol, P. D. Roberts, S. M. Olson, and J. B. Jones. 2009. Suppression of the bacterial spot pathogen Xanthomonas euvesicatoria on tomato leaves by an attenuated mutant of Xanthomonas perforans. Appl. Env. Microbiol. 75: 3323–3330.
34. Zhang, Y., E. M. Callaway, J. B. Jones and M. Wilson. 2009. Visualisation of hrp gene expression in Xanthomonas euvesicatoria in the tomato phyllosphere. Eur. J. Plant Pathol. 124:379-390.
35. Almeida, N. F., Yan, S., Cai, R., Clarke, C. R., Morris, C. E., Schaad, N. W., Lacy, G. H., Jones, J. B., Castillo, J. A., Bull, C. T., Leman, S., Guttman, D. S., Setubal, J. C., Vinatzer, B. A. (in press) PAMDB, A Multilocus Sequence Typing & Analysis Database and Website for Plant-Associated and Plant-Pathogenic Microorganisms. Phytopathology.
Interim Department Chair, University of Florida; 2009 - 2010
These small molecule organic compounds serve as bactericides for treating and preventing bacterial spot disease in tomatoes. Tomato is among the most widely consumed vegetable crops with significant economic importance in the USA and worldwide. The total crop value is over $1.8 billion in the USA and $336.5 million in Florida, which ranks first in fresh market tomato production and second in total tomato production. Bacterial spot disease, caused by four species of the genus Xanthomonas, is an economically important tomato disease, causing destructive infection and resulting in significant crop loss. In Florida, X. perforans is the primary pathogen causing bacterial spot on tomatoes. The warm and wet conditions of the state favor disease development, particularly during the growing season. X. perforans spreads by contaminated seed and transplants, wind-driven rain, irrigation waters through overhead sprinklers, and the clipping of tomato transplants. The management of bacterial spot of tomato is a major challenge for tomato growers.
Currently, bacterial spot management largely relies on applying fixed copper-based bactericides. However, control by copper-based compounds is often marginal or ineffective in Florida, with a widespread presence of copper-resistant strains of the pathogen. The accumulation of copper in the environment is also a concern regarding the excessive use of copper-based products in agriculture. To date, breeding programs have been largely unsuccessful in developing acceptable tomato varieties with durable resistance to bacterial spot. It is imperative to address these deficiencies and inadequacies in tomato bacterial spot control.
Researchers at the University of Florida discovered that the small molecules: hexanoic acid, piperidine, and pyrrolidine, have antibacterial properties against X. perforans. The three compounds perform better than the industry standard against the copper-resistant pathogen, reducing yield loss in tomatoes and better controlling the bacterial infection.
Small molecule compounds treat, control, and reduce bacterial spot disease in tomatoes, advancing the disease management
These small molecule compounds, with a molecular weight lower than 900 Daltons, demonstrate bactericide properties against the copper-resistant X. perforans, one of the main species responsible for bacterial spot of tomato (BST). The lower molecular weight enables the compounds to permeate intercellular components interacting and interfering with biological processes. Results from in vitro assays and in planta experiments demonstrate hexanoic acid, piperidine, and pyrrolidine are effective in suppressing X. perforans growth and reducing BST. Field experiments reveal a greater effect on disease reduction and an increase in marketable fruit yield when applying the compounds as root drenches (hexanoic acid) or foliar sprays (piperidine and pyrrolidine) in comparison to the application of standard copper-based bactericides.
