Publications
Natalie Wieber, Sara Haney, James Lazarcik, Paul Koch, and Jeri Barak. 2026. Time, not fungicide treatment, influences the resistome of the turf phyllosphere. bioRxiv. Link.
Nicola Holden and Jeri Barak. 2025. Microbe – plant interactions of Escherichia coli and Salmonella. EcoSal Plus. Link
Kimberly N Cowles, Arjun S Iyer, Iain McConnell, Ellie G Guillemette, Dharshita Nellore, Sonia C Zaacks, Jeri D Barak. 2025. Established Pseudomonas syringae pv. tomato infection disrupts immigration of leaf surface bacteria to the apoplast. Front. Microbiol. Link
Megan H. Dixon, Dharshita Nellore, Sonia C. Zaacks, Jeri D. Barak. 2024. Time of arrival during disease progression and humidity additively influence Salmonella enterica colonization of lettuce. Appl. Environ. Microbiol. Link.
Megan H. Dixon, Victoria L. Harrod, Russell Groves, Ellie Guillemette, Jeri Barak. 2023. The “friends” that help dangerous bacteria get into your salad. Front Young Minds. Link
Adam F. Bigott, Samuel F. Hutton, Gary Vallad, Richard Lankau, Jeri D. Barak. 2023. Narrow, but not broad, spectrum resistance and disease reshape phyllosphere bacterial communities. bioRxiv. Link.
Megan H. Dixon, Kimberly N. Cowles, Sonia C. Zaacks, Isabel N. Marciniak, Jeri D. Barak. 2022. Xanthomonas infection transforms the apoplast into an accessible and habitable niche for Salmonella enterica. Appl. Environ. Microbiol. Link.
Victoria L. Harrod, Russell Groves, Ellie Guillemette, Jeri Barak. 2022. Give and Take: Salmonella enterica alters Macrosteles auadrilineatus feeding behaviors resulting in altered S. enterica populations and distribution on leaves. Sci Rep 12, 8544 Link.
Kimberly N. Cowles, Anna K. Block, Jeri D. Barak. 2022. Xanthomonas hortorum pv. gardneri TAL effector AvrHah1 is necessary and sufficient for increased persistence of Salmonella enterica on tomato leaves. Sci Rep 12, 7313. Link
Harrod, V.L., Groves, R.L., Maurice, M.A., and Barak J.D. 2021. Frankliniella occidentalis facilitate Salmonella enterica survival in the phyllosphere. PLoS ONE 16(2): e0247325. Link.
Julia Thorsen, Kristine Grindle, Irene Ong, Rene Welch Schwartz, Jeri Barak, James Gern. 2020. Are we what we eat? Identifying microbial communities of fruits and vegetables. J. Allergy Clin Immun. PAB65. Link
Nicola Holden, László Kredics, Jeri Barak. 2020. Editorial for the thematic issue, “Human Pathogens in the Environment.” FEMS Microbiol Letters Link
Cowles, K.N, Groves, R.L., and Barak, J.D. 2018. Leafhopper-induced activation of the jasmonic acid response benefits Salmonella enterica in a flagellum-dependent manner. Front. Microbiol. doi: 10.3389/fmicb.2018.01987 Link
Grace Kwan, Brett Plagenz, Kimberly Cowles, Tippapha Pisithkul, Daniel Amador-Noguez, and Jeri D. Barak. 2018. Few Differences in metabolic network use found between Salmonella enterica colonization of plants and typhoidal mice. Front. Microbiol. doi: 10.3389/fmicb.2018.00695 Link
Dundore-Arias JP and Barak JD. 2017. “Plant Associated Foodborne Pathogens.” In: A.P. Keinath, W.M. Wintermantel, and T.A. Zitter (Eds.), Compendium of Cucurbit Diseases and Pests (pp. 17-19). APS Press, St. Paul.
Jeri D. Barak, Taca Vancheva, Pierre Lefeuvre, Jeffrey B. Jones, Sujan Timilsina, Gerald V. Minisavage, Gary E. Vallad, and Ralf Koebnik. 2016. Whole-genome sequences of Xanthomonas euvesicatoria strains clarify taxonomy and reveal a stepwise erosion of type 3 effectors. Front. Plant Sci.doi: 10.3389/fpls.2016.01805 Link
Cowles KN, Willis DK, Engel TN, Jones JB, and Barak J.D. 2016. Diguanylate cyclases, AdrA and STM1987, regulate Salmonella enterica exopolysaccharide production during plant colonization in an environment-dependent manner. Appl Environ Microbiol. 82(4): 1237-1248. Link
Dundore-Arias JP and Barak JD.2015. “Food Safety.” In: K.V. Subbarao, R.M. Davis, R.L. Gilbertson, and R.N. Raid (Eds.), Compendium of Lettuce Diseases and Pests (pp. 22-24). APS Press, St. Paul.
Potnis, N., Colee, J., Jones, J.B., and Barak, J.D. 2015. Plant pathogen induced watersoaking promotes Salmonella enterica growth on tomato leaves. Appl. Environ. Microbiol. 81(23): 8126-34. Link
Dundore-Arias, J.P., Groves, R.L. and Barak, J.D. 2015. Influence of prgH on the persistence of ingested Salmonella enterica in the leafhopper Macrosteles quadrilineatus. Appl. Environ. Microbiol. 81 (18): 6345-6354. Link
Schwartz AR, Potnis N, Timilsina S, Wilson M, Patané J, Martins J Jr., Minsavage GV, Dahlbeck D, Akhunova A, Almeida N, Vallad GE, Barak JD, White FF, Miller SA, Ritchie D, Goss E, Bart RS, Setubal JC, Jones JB and Staskawicz BJ 2015. Phylogenomics of Xanthomonas field strains infecting pepper and tomato reveals diversity in effector repertoires and identifies determinants of host specificity. Front. Microbiol. 6:535. Link
Potnis, N., Timilsina, S., Strayer, A., Shantharaj, D., Barak, J.D., Paret, M.L., Vallad, G.E., and Jones, J.B. 2015. Bacterial spot of tomato and pepper: diverse Xanthomonas species with a wide variety of virulence factors posing a worldwide challenge. Mol. Plant Pathol. Link
Kwan, G., Pisithkul, T., Amador-Noguez, D., and Barak, J.D. 2015. De novo amino acid biosynthesis contributes to Salmonella enterica growth in alfalfa seedling exudates. Appl. Environ. Microbiol. 81(3): 861-73 Link
Soto-Arias, J.P., Groves, R.L., and Barak, J.D. 2014. Transmission and retention of Salmonella enterica by phytophagous hemipteran insects. Appl. Environ. Microbiol. 80(17): 5447-5456. Link
Potnis, N., Soto-Arias, J.P., Cowles, K., van Bruggen, A.H.C., Jones, J.B., and Barak, J.D. 2014. Xanthomonas perforans colonization influences Salmonella enterica in the tomato phyllosphere. Appl. Environ. Microbiol. 80(10): 3173-3180. Link
Pollard, S., Barak, J.D., Royer, R., Grabau, E., Reiter, M., Gu, G., and Rideout, S. 2014. Potential interactions between Salmonella enterica and Ralstonia solanacearum in tomato plants. J. Food Prot 77(2): 320-324. Link
Soto-Arias, J.P., Groves, R.L., and Barak, J.D. 2013. Benefits of piercing and sucking, enhanced persistence of Salmonella enterica on plants due to phytophagous hemipterans. PLoS ONE 8(10): e79404. Link
Kwan, G., Charkowski, A.O., and Barak, J.D. 2013. Salmonella enterica moderates Pectobacterium carotovorum populations and virulence on lettuce. mBio. 4:e00557-12. Link
Jeri D. Barak and Brenda Schroeder. 2012. Interrelationships of Food Safety and Plant Pathology: The Life Cycle of Human Pathogens. Ann Rev Phytopathol 50: 241-266. Link
Hao, L., H. Andrews-Polymenis, M. McClelland, D. K. Willis, J. D. Barak. 2012. Salmonella enterica requires siderophore biosynthesis to colonize plants. Appl. Environ. Microbiol. 13:4561-4570. Link
Barak, J. D. 2012. The biggest food safety threat from the tiniest of crops. Cereal Foods World. 57(3): 123-124. Link
Courtney E. Jahn, Dija A. Selimi, Jeri D. Barak, and Amy O. Charkowski. 2011. The Dickeya dadantii biofilm matrix consists of cellulose nanofibers and is an emergent property dependent upon the type III secretion system and the cellulose synthesis operon. Microbiol. 157: 2733-2744. Link
Jeri D. Barak, Kramer, L., and Hao, L. 2011. Plant cultivar alters Salmonella enterica colonization of tomato and Type 1 trichomes are preferential colonization sites. Appl. Environ. Microbiol. 77(2): 498-504. Link
Jeri D. Barak, L. Gorski, Anita S. Liang, and Kohn-Eun Narm. 2009. Previously uncharacterized Salmonella enterica genes required for swarming play a role in plant colonization. Microbiol. 155: 3701-3709. Link
Teplitski, M., Barak, J., and Schneider, K. R. 2009. Human enteric pathogens in produce: un-answered ecological questions with direct implications for food safety. Curr. Opin. Biotech. 20(2): 166-71. Link
Csordas, A.T., M.J. Delwiche and J.D. Barak. 2008. Nucleic acid sensor and fluid handling for detection of bacterial pathogens. Sensors and Actuators B: Chemical. 134: 1-8. Link
Csordas, A.T., M.J. Delwiche and J.D. Barak. 2008. Automatic detection of Salmonella enterica in sprout irrigation water using a nucleic acid sensor. Sensors and Actuators B: Chemical. 134: 9-17. Link
Barak, J.D., A. S. Liang and K. Narm. 2008. Differential attachment and subsequent contamination of agricultural crops by Salmonella enterica. Appl. Environ. Microbiol. 74(17): 5568-5570. Link
Jeri D. Barak and Anita S. Liang. 2008. Role of soil, crop debris, and a plant pathogen in Salmonella enterica contamination of tomato plants. PLoS ONE 3(2): e1657. Link
Lermo, A., E. Zacco, J. Barak, M. Delwiche, S. Campoy, J. Barbe, S. Alegret and M.I. Pividor. 2008. Towards q-PCR of pathogenic bacteria with improved electrochemical double-tagged genosensing detection. Biosensors Bioelectronics. 23(12):1805-1811. Link
Mohle-Boetani, J., J. Farrar, P. Bradley, J. Barak, M. Miller, R. Mandrel, P. Mead, W. Keen, K. Cummings, S. Abbott and S. Benson Werner. 2008. Salmonella infections associated with mung bean sprouts: epidemiology and environmental investigations. Epidemiol. Inf. doi: 10.1017/S0950268808000411. Link
Barak, J.D., C.E. Jahn, D.L. Gibson and A.O. Charkowski. 2007. The role of cellulose, lipopolysaccharide O-polysaccharide, and O-antigen capsule in the colonization of plants by Salmonella enterica. Mol. Plant-Microbe Interact. 20:1083-1091. *Faculty of 1,000 recommended. Link
Barak, J., L. Gorski, P. Naraghi-Arani and A.O. Charkowski. 2005. Salmonella enterica virulence genes are required for bacterial attachment to plant tissue. Appl. Environ. Microbiol. 71:5685-5691. Link
Yap, M.-N, C.-H. Yang, J.D. Barak, C.E. Jahn and A.O. Charkowski. 2005. The Erwinia chrysanthemi type III secretion system is required for multicellular behavior. J. Bacteriol. 187:639-648. Link
Barak, J.D., K. Sananikone and M.J. Delwiche. 2005. Comparison of primers for detection of pathogenic E. coli using real-time PCR. Lett. Appl. Microbiol. 41:112-118. Link
Yap, M. N., Barak, J. D., and Charkowski, A. O. 2004. Genomic diversity of Erwinia carotovora subsp. carotovora and its correlation with virulence. Appl. Environ. Microbiol. 70: 3013-3023. Link
Csordas, A. T., Barak, J. D., and Delwiche, M. J. 2004. Comparison of primers for the detection of Salmonella enterica serovars using real-time PCR. Lett. Appl. Microbiol. 39: 187-193. Link
Barak, J. D., Chue, B., and Mills, D. 2003. Recovery of surface bacteria from and surface sanitization of cantaloupes. J. Food Prot. 66: 1805-1810. Link
Barak, J. D. and Gilbertson, R. L. 2003. Genetic diversity of Xanthomonas campestris pv. vitians, the causal agent of bacterial leafspot of lettuce. Phytopathology 93: 596-603. Link
Barak, J. D., Whitehand, L. C., and Charkowski, A. O. 2002. Differences in attachment of Salmonella enterica serovars and Escherichia coli O157:H7 to alfalfa sprouts. Appl. Environ. Microbiol. 68: 4758-4763. Link
Charkowski, A. O., Barak, J. D., Sarreal, C. Z., and Mandrell, R. E. 2002. Growth and colonization of Salmonella enterica and Escherichia coli O157:H7 on alfalfa sprouts and the effects of sprouting temperature, inoculum dose, and frequency of irrigation on bacterial levels. Appl. Environ. Microbiol. 68: 3114-3120. Link
Barak, J. D., Koike, S. T, and Gilbertson, R. L. 2002. Long-distance movement of Xanthomonas campestris pv. vitians in the stems of lettuce plants. Plant Pathology 51: 506-512. Link
Barak, J. D., Koike, S. T, and Gilbertson, R. L. 2001. Role of crop debris and weeds in the epidemiology of bacterial leaf spot of lettuce, caused by Xanthomonas campestris pv. vitians, in California. Plant Disease 85: 169-178. Link
Koike, S. T. *, Barak, J. D. *, Henderson, D. M., and Gilbertson, R. L. 1999. Bacterial blight of leek: a new disease in California caused by Pseudomonas syringae. Plant Disease 83: 165-170. *co-first authors. Link
Tomasky, G; Barak, J; Valiela, I; Behr, P; Soucy, L; Foreman, K. 1999. Nutrient limitation of phytoplankton growth in Waquoit Bay, Massachusetts, USA: a nutrient enrichment study. Aquat. Ecol. 33(2):147-155. Link