Bacterial leaf spot (BLS) of lettuce is caused by the bacterium Xanthomonas hortorum. BLS is more damaging in Florida, where the climate is conducive for disease development. The most effective control method is host resistance currently being developed by the UF/IFAS lettuce breeding program in all lettuce types. This new 4-page publication of the UF/IFAS Horticultural Sciences Department was written by Germán Sandoya and D. Calvin Odero.
Brown, Z. 1918. “Some Bacterial Diseases of Lettuce.” Journal of Agriculture Research 13:367–388.
Bull, C. T., P. H. Goldman, R. Hayes, L. V. Madden, S. T. Koike, and E. Ryder. 2007. “Genetic Diversity of Lettuce for Resistance to Bacterial Leaf Spot Caused by Xanthomonas campestris pv. vitians.” Plant Health Progress 8 (1). https://doi.org/10.1094/PHP-2007-0917-02-RS
Bull, C. T., and S. T. Koike. 2005. “Evaluating the Efficacy of Commercial Products for Management of Bacterial Leaf Spot on Lettuce.” Plant Health Progress 6 (1). https://doi.org/10.1094/PHP-2005-1121-01-RS
Bull, C., M. Trent, and R. Hayes. 2016. “Three Races of Xanthomonas campestris pv. vitians Causing Bacterial Leaf Spot on Lettuce Identified.” Poster. American Phytopathological Society Annual Meeting 437-P.
Koike, S. T., R. L. Gilbertson, and C. T. Bull. 2018. “Bacterial Leaf Spot.” In Compendium of Lettice Diseases and Pests, 2nd edition, edited by Krishna V. Subbarao, R. M. D., Robert L. Gilbertson, and Richard N. Raid, 54–56. St. Paul: The American Phytopathological Society.
Morinière, L., A. Burlet, E. R. Rosenthal, X. Nesme, P. Portier, C. T. Bull, C. Lavire, M. Fischer-LeSaux, and F. Bertolla. 2020. “Clarifying the Taxonomy of the Causal Agent of Bacterial Leaf Spot of Lettuce through a Polyphasic Approach Leads to Combine Xanthomonas hortorum Vauterin et al. 1995 and Xanthomonas cynarae Trébaol 2000 emend. Timilsina et al. 2019.” Systematic and Applied Microbiology 43 (4): 126087. https://doi.org/10.1016/j.syapm.2020.126087
Odero, C. D., and G. Sandoya. 2011. “Weeds and Epidemiology of Bacterial Leaf Spot of Lettuce in the Everglades Agricultural Area.” EDIS 2011 (3). https://edis.ifas.ufl.edu/ag357
Pernezny, K., R. N. Raid, R. E. Stall, N. Hodge, and J. Collins. 1995. “An Outbreak of Bacterial Spot of Lettuce in Florida Caused by Xanthomonas campestris pv. vitians.” Plant Disease 79:359–360. https://doi.org/10.1094/PD-79-0359
Sandoya, G., and H. Lu. 2013. “Evaluation of Lettuce Cultivars for Production on Muck Soils in Southern Florida.” EDIS 2013 (5). https://edis.ifas.ufl.edu/hs1225
Sandoya, G. V., B. Maisonneuve, M. J. Truco, C. T. Bull, I. Simko, M. Trent, R. J. Hayes, and R. W. Michelmore. 2019. “Genetic Analysis of Resistance to Bacterial Leaf Spot in the Heirloom Lettuce Cultivar Reine des Glaces.” Molecular Breeding 39 (12): 160. https://doi.org/10.1007/s11032-019-1072-6
Strayer-Scherer, A., Y. Liao, P. Abrahamian, S. Timilsina, M. Paret, T. Momol, J. Jones, and G. Vallad. 2019. “Integrated Management of Bacterial Spot on Tomato in Florida.” EDIS 2019 (6). https://doi.org/10.32473/edis-pp353-2019