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Dr. Dean W. Gabriel


Dean Gabriel bio picture


Phone: (352) 392-7239
Office: Room #2559, Fifield Hall
2550 Hull Road
Gainesville, FL, 32611

Citrus Greening Reporting Website




Research in my lab is in the areas of genetics, physiology and molecular biology of plant/microbe interactions. We are currently working on the structure, function and expression of cloned pathogen virulence genes, especially those involving citrus canker disease, cotton blight and common bean blight. Citrus canker disease is a quarantined pathogen in the U.S. and must be kept under BL-3 physical containment. We are working on methods to block pathogen signal molecules transferred to the plant nucleus. We have research projects to engineer resistance to bacterial pathogens and insect pests. Other projects involve research on the population structure, epidemiology, taxonomy, and detection of Xanthomonas. Graduate students in my lab have the option of majoring in either Plant Pathology or Plant Molecular and Cell Biology. I teach on the subjects of microbial genetics, population genetics, host/parasite interactions, and resistance gene management in two formal courses: "PLP6502, Genetics of Plant/Microbe Interactions" and "PCB5065, Advanced Genetics."

  • Education

    Ph.D. Michigan State University, 1981

    M.S. Michigan State University, 1976

    B.A. Michigan State University, 1974

    B.S. University of Wisconsin, 1964

  • Publications

    You can access a collection of my publications on Google Scholar.

    Jain, M., Munoz-Bodnar, A., Zhang, S., and D.W. Gabriel. 2018. A Secreted ‘Candidatus Liberibacter asiaticus’ Peroxiredoxin Simultaneously Suppresses Both Localized and Systemic Innate Immune Responses in Planta.  Molec. Plant-Microbe Interact. 31:1312-1322.


    Zhang, S., Jain, M., Fleites, F.A., Rayside, P.A. and Gabriel, D.W.  2019.  Identification and characterization of menadione and benzethonium chloride as potential treatments of Pierce’s Disease of grapevines. Phytopathology 109:233-239.


    Jain, M., Munoz-Bodnar, A., and D.W. Gabriel.  2019.  ‘ Candidatus Liberibacter asiaticus’ peroxiredoxin (LasBCP) suppresses oxylipin-mediated defense signaling in citrus. J. Plant Physiology 236:61-65.


    Naranjo, E., Merfa e Silva, M.V., Ferreira, V., Jain, M., Davis, M.J., Bahar, O., Gabriel, D.W. and De La Fuente, L. 2019. Liberibacter crescens biofilm formation in vitro: establishment of a model system for pathogenic ‘Candidatus Liberibacter spp.’. Scientific reports, 9(1), p.5150.


    Jain, M., Cai, L., Fleites, L.A., Munoz Bodnar, A., Davis, M.J. and Gabriel, D., 2019. Liberibacter crescens is a cultured surrogate for functional genomics of uncultured pathogenic ‘Candidatus Liberibacter’spp. and is naturally competent for transformation. Phytopathology .  “Editor’s Pick”


    Sena-Vélez, M., Holland, S. D., Aggarwal, M., Cogan, N. G., Jain, M., Gabriel, D. W., & Jones, K. M. 2019. Growth Dynamics and Survival of Liberibacter crescens BT-1, an Important Model Organism for the Citrus Huanglongbing Pathogen "Candidatus Liberibacter asiaticus". Applied Environ. Microbiol 85(21), e01656-19.


    Merfa, M. V., Pérez-López, E., Naranjo, E., Jain, M., Gabriel, D. W., & De La Fuente, L. 2019. Progress and Obstacles in Culturing 'Candidatus Liberibacter asiaticus', the Bacterium Associated with Huanglongbing. Phytopathology, 109(7), 1092–1101.


    Li, J., Gao, M., Gabriel, D. W., Liang, W., & Song, L.  2020. Secretome-Wide Analysis of Lysine Acetylation in Fusarium oxysporum f. sp. lycopersici Provides Novel Insights Into Infection-Related Proteins. Frontiers Microbiol, 11, 559440.


Munoz-Bodnar, A.,Santillana, G., Mavrodieva, V., Liu, Z., Nekhla, M., and D.W. Gabriel 2017 Complete genome sequences of three Xanthomonas citri strains from Texas. Genome Announc.. July 2017 5:e00609-17.  doi:10.1128/genomeA.00609-17. 
Jain, M., L. A. Fleites, and D. W. Gabriel 2017 A small Wolbachia protein directly represses phage lytic cycle genes in “Candidatus Liberibacter asiaticus” within psyllids. mSphere 2: e00171-17.  doi:10.1128/mSphereDirect.00171-17.
Mensi, I., J. H. Daugrois, I. Pieretti, D. Gargani, L. A. Fleites, J. Noell, F. Bonnot, D. W. Gabriel, and P. Rott 2016 Surface polysaccharides and quorum sensing are involved in the attachment and survival of Xanthomonas albilineans on sugarcane leaves. Molecular Plant Pathology 17:236-246.
Jain, M., Fleites, L. A., and Gabriel, D. W. 2015 Prophage encoded peroxidase in'Candidatus Liberibacter asiaticus' is a secreted effector that suppresses plant defenses. Mol. Plant Microbe Interact. DOI: 10.1094/MPMI-07-15-0145-R.
Zhang S, Chakrabarty PK, Fleites LA, Rayside PA, Hopkins DL, Gabriel DW. 2015 Three New Pierce's Disease Pathogenicity Effectors Identified Using Xylella fastidiosa Biocontrol Strain EB92-1. PLoS One 10:e0133796. doi: 10.1371/journal.pone.0133796.
Fleites LA, Jain M, Zhang S, Gabriel DW 2014 Candidatus Liberibacter asiaticus prophage late genes may limit host range and culturability. Appl Environ Microbiol. 80:6023-30.
Wulff, NA, Zhang, S, Setubal, JC, Almeida, NF, Martins EC, Harakava, R, Kumar, D, Rangel, LT, Foissac, X, Bove, J, Gabriel, DW. 2014 The complete genome sequence of Candidatus Liberibacter americanus, associated with citrus Huanglongbing. Mol Plant Microbe Interact. 27:163-176. Epub ahead of print] PMID: 24200077.
Fleites, L, Mensi, I, Gargani, D, Zhang, S, Rott, PC, Gabriel, DW. 2013 Xanthomonas albilineans OmpA1 appears to be functionally modular and both the OMC and C-like domains are necessary for leaf scald disease of sugarcane. Molec. Plant Microbe Interact. Jun 12. [Epub ahead of print] PMID: 23758144.
Rott, P, Fleites, LA, Mensi, I, Sheppard, L, Daugrois, JH, Dow, JM, Gabriel, DW. 2013 The RpfCG two-component system negatively regulates the colonization of sugar cane stalks by Xanthomonas albilineans. Microbiology 159:1149-59. doi: 10.1099/mic.0.065748-0.
Hoffman MT, Doud MS, Williams L, Zhang MQ, Ding F, Stover E, Hall D, Zhang S, Jones L, Gooch M, Fleites L, Dixon W, Gabriel D, Duan YP. 2013 Heat treatment eliminates 'Candidatus Liberibacter asiaticus' from infected citrus trees under controlled conditions. Phytopathology 103:15-21.
Pieretti I, Royer M, Barbe V, Carrere S, Koebnik R, Couloux A, Darrasse A, Gouzy J, Jacques MA, Lauber E, Manceau C, Mangenot S, Poussier S, Segurens B, Szurek B, Verdier V, Arlat M, Gabriel DW, Rott P, Cociancich S. 2012 Genomic insights into strategies used by Xanthomonas albilineans with its reduced artillery to spread within sugarcane xylem vessels. BMC Genomics 13:658. doi: 10.1186/1471-2164-13-658.
Zhang, S., Z. Flores-Cruz, D. Kumar, P. Chakrabarty, D. L. Hopkins, and D. W. Gabriel. 2011 The Xylella fastidiosa Biocontrol Strain EB92-1 Genome Is Very Similar and Syntenic to Pierce's Disease Strains. Journal of Bacteriology 193:5576-5577.
Zhang, S., Flores-Cruz, Z., Zhou, L., Kang, B. H., Fleites, L., Gooch, M. D., Wulff, N. A., Davis, M. J., Duan, Y., and Gabriel, D.W. 2011 Ca. Liberibacter asiaticus carries an excision plasmid prophage and a chromosomally integrated prophage that becomes lytic in plant infections. Molec. Plant-Microbe Interactions 24:458-468
Rott, P., M. Marguerettaz, L. Fleites, S. Cociancich, J. C. Girard, I. Pieretti, D. W. Gabriel, and M. Royer. 2011 Unravelling pathogenicity of Xanthomonas albilineans, the causal agent of sugarcane leaf scald. Int. Sugar J. 113:490-496.
Rott, P.C., Fleites, L., Marlow, G., Royer, M., and Gabriel, D.W. 2011 Identification of New Candidate Pathogenicity Factors in the Xylem-Invading Pathogen Xanthomonas albilineans by Transposon Mutagenesis. Molec. Plant-Microbe Interact. 24:594-605