Jong Hyun Ham
Assistant Professor

Publications

PUBLICATIONS IN REFEREED JOURNALS

1.        Ham, J. H., D. R. Majerczak, K. Nomura, C. Mecey, F. Uribe, S.-Y. He, D. Mackey, and D. L. Coplin. 2009. Multiple activities of the plant pathogen type III effector proteins WtsE and AvrE require WxxxE motifs. Mol. Plant-Microbe Interact. 22: 703-712.

2.       Ham, J. H., D. R. Majerczak, S. Ewert, M.-V. Sreerekha, D. Mackey, and D. L. Coplin. 2008. WtsE, an AvrE-family type III effector protein of Pantoea stewartii subsp. stewartii, causes cell death in nonhost plants. Mol. Plant Pathol. 9(5): 633-643.

3.       Ham, J. H., M. G. Kim, S. Y. Lee, and D. Mackey. 2007. Layered basal defenses underlie nonhost resistance of Arabidopsis to Pseudomonas syringae pv. phaseolicola. The Plant Journal 51: 604-616.

4.        Ham, J. H.,  D. R. Majerczak, A. R. Arroyo-Rodriguez, D. M. Mackey, D. L. Coplin. 2006. WtsE, an AvrE-family effector protein from Pantoea stewartii subsp. stewartii, causes disease-associated cell death in corn and requires a chaperone protein for stability. Mol. Plant-Microbe Interact. 19: 1092-1102.   

5.       Quirino, B. F.*, R. Genger*, Ham, J. H.*, G. Zabala, A. Bent. 2004. Identification and functional analysis of Arabidopsis proteins that interact with resistance gene product RPS2 in yeast. Physiol. Mol. Plant Pathol. 65: 257-267.

*: Co-first authorship

6.       Rojas, C. M.*, J. H. Ham*, L. M. Schechter, J. F. Kim, S. V. Beer, and A. Collmer. 2004. The Erwinia chrysanthemi EC16 hrp/hrc gene cluster encodes an Active Hrp type III secretion system that is flanked by virulence genes functionally unrelated to the Hrp system. Mol. Plant-Microbe Interact. 17: 644-653.

*: Co-first authorship

7.       Jurkowski, G. I., R. K. Smith, Jr., I. Yu, J. H. Ham, S. B. Sharma, D. F. Klessig, K. A. Fengler, and A. F. Bent. 2004. Arabidopsis DND2, a second cyclic nucleotide-gated ion channel gene for which mutation causes the “defense, no death” phenotype. Mol. Plant-Microbe Interact. 17: 511-520.

8.        Ham, J. H., Y. Y. Cui, J. R. Alfano, P. Rodríguez-Palenzuela, C. M. Rojas, A. K. Chatterjee, and A. Collmer. 2004. Analysis of Erwinia chrysanthemi EC16 pelE::uidA, pelL::uidA, and hrpN::uidA mutants reveals strain-specific atypical regulation of the Hrp type III secretion system. Mol. Plant-Microbe Interact. 17: 184-194.

9.       Do, H. M., J. K. Hong, H. W. Jung, S. H. Kim, J. H. Ham, B. K. Hwang. 2003. Expression of peroxidase-like genes, H₂O₂ production, and peroxidase activity during the hypersensitive response to Xanthomonas campestris pv. vesicatoria in Capsicum annuum. Mol. Plant-Microbe Interact. 16: 196-205.

10.     Rojas, C. M., J. H. Ham, Deng, W.-L., Doyle, J. J., and A. Collmer. 2002. HecA, a member of a class of adhesins produced by diverse pathogenic bacteria, contributes to the attachment, aggregation, epidermal cell killing, and virulence phenotypes of Erwinia chrysanthemi EC16 on Nicotiana clevelandii seedlings. Proc. Natl. Acad. Sci. U.S.A. 99: 13142 - 13147.

11.      Ham, J. H., D. W. Bauer, and A. Collmer. 1998. A cloned Erwinia chrysanthemi Hrp (typeIII protein secretion) system functions in Escherichia coli to deliver Pseudomonas syringae Avr protein signals to plant cells and to secrete Avr proteins in culture. Proc. Natl. Acad. Sci. U.S.A. 95: 10206 - 10211.

12.     Kim, J. F., J. H. Ham, D. W. Bauer, A. Collmer, and S. V. Beer. 1998. The hrpC and hrpN operons of  Erwinia chrysanthemi EC16 are flanked by plcA and homologs of hemolysin/adhesin genes and accompanying activator/transporter genes. Mol. Plant-Microbe Interact. 11: 563 - 567.

13.     Alfano, J. R., J. H. Ham, and A. Collmer. 1995. Use of Tn5tac1 to clone a pel gene encoding a highly alkaline, asparagine-rich pectate lyase isozyme from Erwinia chrysanthemi EC16 mutant with deletions affecting the major pectate lyase isozymes. J. Bacteriol. 177: 4553 – 4556.

14.      Ham, J. H., Y. J. Kim, and B. K. Hwang. 1991. Induction of resistance to Metalaxyl of Phytophthora capsici by chemical mutagenesis. Korean J. Plant Pathol. 7(3): 133 – 139.

15.      Ham, J. H., B. K. Hwang, Y. J. Kim, and C. H. Kim. 1991. Differential sensitivity to Metalaxyl of isolates of Phytophthora capsici from different geographic areas. Korean J. Plant Pathol. 7(4): 212 – 220.
 

BOOK CHAPTERS AND PROCEEDINGS

1.        Ham J. H. 2008. Novel functional motifs of bacterial type III effector: A new insight into the role of small G proteins in plant disease resistance. In New Approaches to Plant Disease Management. Korean Society of Plant Pathology. p 33-36.

2.        Ham J. H., M. G. Kim, and D. Mackey. 2006. Nonhost Resistance of Arabidopsis to Pseudomonas syringae pv. phaseolicola Is Mediated by Multiple, Independently Effective Layers of Basal Defense. In Biology of Plant-Microbe Interactions, Vol. 5. Edited by Federico Sanchez, Carmen Quinto, Isabel M. Lopez-Lara, and Otto Geiger, APS press, St. Paul.

3.        Ham, J. H. and A. F. Bent. 2002. Recognition and defense signaling in plant/bacterial and fungal interactions (Chapter 9). p198-224.  In Plant Signal Transduction: Frontiers in Molecular Biology. Dierk Scheel and Claus Wasternack, Eds. Frontiers in Molecular Biology Series,  Oxford University Press. 

4.      Collmer, A., Charkowski, A. O., Deng, W.-L., Fouts, D. E., Ham, J. H., Rehm, A. H., van Dijk, K., and Alfano, J. R. 2001. Bacterial Avr proteins: secreted agents of parasitism and elicitors of plant defense. In Delivery and Perception of Pathogen Signals in Plants. N. T. Keen, S. Mayama, J. E. Leach, and S. Tsuyumu, ed. APS Press, St. Paul. p 36-45.

5.      Collmer, A., J. R. Alfano, D. W. Bauer, G. M. Preston, A. O. Loniello, A. Conlin, J. H. Ham, H.-C. Huang, S. Gopalan, and S. Y. He. 1996. Secreted proteins, secretion pathways, and the plant pathogenicity of Erwinia chrysanthemi and Pseudomonas syringae. In Biology of Plant-Microbe Interactions, Vol. 1, G. Stacey, B. Mullin, and P. M. Gresshoff, eds. p159 - p164.
 

MANUSCRIPTS IN PREPARATION

1.        Ham, J. H., M. Merighi, D. R. Majerczak, and D. L. Coplin. 2008. The Lon protease is a negative regulator of the Hrp type III secretion system of Pantoea stewartii subsp. stewartii. (For J. Bacteriology)
 

OTHER PUBLICATIONS 

1.       Karki, H., A. Shahjahan, R. Nandakumar, M.C. Rush, and J. H. Ham. 2009. Characterization of naturally avirulent strains of Burkholderia glumae, the causative agent of bacterial panicle blight of rice. Phytopathology 99:S62.

2.       Melanson, R. A., S. Gil, J. H. Ham, and R. S. Sanderlin. 2009. Insect transmission and genotypic variation of pecan pathogenic Xylella fastidiosa strains in Louisiana. Phytopathology 99:S8

3.       Ham, J. H., D. R. Majerczak, D. Mackey, D. L. Coplin. 2006. Characterization and functional analysis of WtsE, an AvrE-family type III effector protein. Phytopathology 96:S45.

4.       Ham, J. H. and D. L. Coplin. 2003. The Lon protease is a negative regulator of the Hrp type III secretion system of Pantoea stewartii subsp. stewartii. Phytopathology 93:S32.

5.       Quirino, B. F., J. H. Ham, B. B. Bonacci, and A. F. Bent. 2002. Functional analysis of RPS2 interaction with putative partners in disease resistance signal transduction. Phytopathology 92:S67.

6.       Hammond, T. M., J. H. Ham, and N. P. Keller. 2002. Aspergillus and Arabidopsis, elucidating the role of the host in mycotoxin production. Phytopathology 92:S33.

7.       Ham, J. H., B. Bonacci, G. Zabala, and A. Bent. 2001. Identification, characterization, and functional analysis of RPS2-interacting proteins of Arabidopsis thaliana. In 10^th International Congress MPMI  

8.       Ham, J. H., G. Zabala, B. B. Bonacci, and A. F. Bent. 2000. Identification of RPS2-interacting proteins of Arabidopsis thaliana using a yeast two-hybrid system. Phytopathology 90:S332000.

9.       Yu, I., J. H. Ham, G. Jurkowski, R. Smith, K. Fengler, S. Clough, A. Bent. 1999. DND1 and DND2: Arabidopsis loci conferring defense-no-death mutant phenotypes. In 9^th International Congress MPMI, 21.13.  

10.      Ham, J. H., J. K. Kim, S.V. Beer, and A. Collmer. 1997. Cloning and characterization of the Erwinia chrysanthemi EC16 hecA and hecB genes that encode predicted hemolysin and hemolysin activator/transporter proteins and confer hemolytic activity. Phytopathology 87 (6) : S38.

11.      Ham, J. H., D. W. Bauer, J. R. Alfano, and A. Collmer. 1996. Differential regulaton, secretion, and role in pathogenesis of the PelE, PelL, and HrpN proteins of Erwinia chrysanthemi EC16. In 8^th International Congress MPMI,G-24.

12.     Kim, J. F., J. H. Ham, D. W. Bauer, A. Collmer, and S. V. Beer. 1996. hrpN and hrcC operons of Erwinia chrysanthemi EC16 are flanked by plcA and a homolog of hemolysin activator genes. In 8^th International Congress MPMI, G-29.

13.     Collmer, A., J. R. Alfano, D. W. Bauer, G. M. Preston, A. O. Loniello, A. Conlin, J. H. Ham, H.-C. Huang, S. Gopalan, and S. Y. He. 1996. Secreted proteins, secretion pathways, and the plant pathogenicity of Erwinia chrysanthemi and Pseudomonas syringae. In 8^th International Congress MPMI, S-49.

14.      Ham, J. H., J. R. Alfano, and A. Collmer. 1995. Cloning of a novel pel gene from a pelABCEX pelX Erwinia chrysanthemi EC16 mutant using transposon Tn5tac1. Phytopathology 85 (10) : 1156.

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