Bacterial pathogens in plants: Life up against the wall

Plant Cell

Volumn 8, Issue 10, 1996, Pages 1683-1698

  Alfano, James R ^a   Collmer, Alan ^a  

^a Cornell University ^*  (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BACTERIA (MICROORGANISMS);

EID: 0030473860     PISSN: 10404651     EISSN: None     Source Type: Journal    
DOI: 10.1105/tpc.8.10.1683     Document Type: Review

References (170)

1. Adetuyi, F.C., Isogai, A., Di Giorgio, D., Ballio, A., and Takemoto, J.Y. (1995) Saprophytic Pseudomonas syringae strain M1 of wheat produces cyclic lipodepsipeptides. FEMS Microbiol. Lett. 131, 63-67.
2. Alfano, J.R., Ham, J.H., and Collmer, A. (1995). Use of Tn5tac1 to clone a pel gene encoding a highly alkaline, asparagine-rich pectate lyase isozyme from an Erwinia chrysanthemi mutant with deletions affecting the major pectate lyase isozymes. J. Bacteriol 177, 4553-4556.
3. Alfano, J.R., Bauer, D.W., Milos, T.M., and Collmer, A. (1996). Analysis of the role of the Pseudomonas synngae pv. syringae HrpZ harpin in elicitation of the hypersensitive response in tobacco using functionally nonpolar deletion mutations, truncated HrpZ fragments, and hrmA mutations Mol Microbiol. 19, 715-728.
4. Arlat, M., Gough, C.L., Zischek, C., Barberis, P.A., Trigalet, A., and Boucher, C.A. (1992). Transcriptional organization and expression of the large hrp gene cluster of Pseudomonas solanacearum. Mol. Plant-Microbe Interact. 5, 187-193.
5. Arlat, M., Van Gijsegem, F., Huet, J.C., Pernollet, J.C., and Boucher, C.A. (1994). PopA1, a protein which induces a hypersensitive-like response on specific Petunia genotypes, is secreted via the Hrp pathway of Pseudomonas solanacearum. EMBO J. 13, 543-553.
6. Atkinson, M.M. (1993). Molecular mechanisms of pathogen recognition by plants. In Advances in Plant Pathology, Vol. 10, J.H. Andrews and I.C. Tommerup, eds (New York: Academic Press), pp. 35-64
7. - exchange. Phytopathology 77, 1573-1578.
8. - exchange with multiplication of Pseudomonas syringae pv. syringae in Phaseolus vulgaris. Phytopathology 77, 1273-1279.
9. Baker, C.J., and Orlandi, E.W. (1995). Active oxygen in plant pathogenesis. Annu. Rev. Phytopathol. 33, 299-321.
10. Barinaga, M. (1996). A shared strategy for virulence. Science 272, 1261-1263.
11. Barny, M.-A. (1995). Erwinia amylovora hrpN mutants, blocked in harpin synthesis, express a reduced virulence on host plants and elicit variable hypersensitive reactions on tobacco. Eur. J. Plant Pathol. 101, 333-340.
12. Barras, F., Thurn, K.K., and Chatterjee, A.K. (1987). Resolution of four pectate lyase structural genes of Erwinia chrysanthemi (EC16) and characterization of the enzymes produced in Escherichia coli. Mol. Gen Genet. 209, 319-325.
13. Barras, F., Van Gijsegem, F., and Chatterjee, A.K. (1994). Extracellular enzymes and pathogenesis of soft-rot Erwinia. Annu. Rev. Phytopathol. 32, 201-234.
14. Bauer, D.W., Bogdanove, A.J., Beer, S.V., and Collmer, A. (1994). Erwinia chrysanthemi hrp genes and their involvement in soft rot pathogenesis and elicitation of the hypersensitive response. Mol. Plant-Microbe Interact. 7, 573-581.
15. Ech: An elicitor of the hypersensitive response that contributes to soft-rot pathogenesis. Mol. Plant-Microbe Interact. 8, 484-491
16. Beaulieu, C., Boccara, M., and Van Gijsegem, F. (1993). Pathogenic behavior of pectinase-defective Erwinia chrysanthemi mutants on different plants. Mol. Plant-Microbe Interact. 6, 197-202.
17. Beck von Bodman, S., and Farrand, S.K. (1995) Capsular polysaccharide biosynthesis and pathogenicity in Erwinia stewartii require induction by an N-acylhomoserine lactone autoinducer. J. Bacteriol. 177, 5000-5008.
18. Beer, S.V., Bauer, D.W., Jiang, X.H., Laby, R.J., Sneath, B.J., Wei, Z.-M., Wilcox, D.A., and Zumoff, C.H. (1991). The hrp gene cluster of Erwinia amylovora. In Advances in Molecular Genetics of Plant-Microbe Interactions, H. Hennecke and D.P.S. Verma, eds (Dordrecht, The Netherlands: Kluwer Academic Publishers), pp. 53-60.
19. Bent, A.F. (1996). Plant disease resistance genes: Function meets structure. Plant Cell 8, 1757-1771.
20. Bent, A.F., Kunkel, B.N., Dahlbeck, D., Brown, K.L., Schmidt, R., Giraudat, J., Leung, J., and Staskawicz, B.J. (1994). RPS2 of Arabidopsis thaliana: A leucine-rich repeat class of plant disease resistance genes. Science 265, 1856-1860
21. Bernhard, T., Coplin, D.L., and Geider, K. (1993). A gene cluster for amylovoran synthesis in Erwinia amylovora: Characterization and relation to cps genes in Erwinia stewartii. Mol. Gen. Genet. 239, 158-168.
22. Bisgrove, S.R., Simonich, M.T., Smith, N.M., Sattler, A., and Innes, R.W. (1994). A disease resistance gene in Arabidopsis with specificity for two different pathogen avirulence genes. Plant Cell 6, 927-933.
23. Boccara, M., Diolez, A., Rouve, M., and Kotoujansky, A. (1988). The role of individual pectate lyases of Erwinia chrysanthemi strain 3937 in pathogenicity on saintpaulia plants. Physiol. Mol. Plant Pathol. 33, 95-104.
24. Bogdanove, A.J., Beer, S.V., Bonas, U., Boucher, C.A., Collmer, A., Coplin, D.L., Cornelis, G.R., Huang, H.-C., Hutcheson, S.W., Panopoulos, N.J., and Van Gijsegem, F. (1996a). Unified nomenclature for broadly conserved hrp genes of phytopathogenic bacteria. Mol. Microbiol. 20, 681-683.
25. Bogdanove, A.J., Wei, Z.-M., Zhao, L., and Beer, S.V. (1996b). Erwinia amylovora secretes harpin via a type III pathway and contains a homolog of yopN of Yersinia spp. J. Bacteriol 178, 1720-1730.
26. Bonas, U. (1994). hrp genes of phytopathogenic bacteria. In Current Topics in Microbiology and Immunology, Vol. 192: Bacterial Pathogenesis of Plants and Animals - Molecular and Cellular Mechanisms, J.L. Dangl, ed (Berlin: Springer-Verlag), pp. 79-98.
27. Brown, I., Mansfield, J., Irlam, I., Conrads-Strauch, J., and Bonas, U. (1993). Ultrastructure of interactions between Xanthomonas campestris pv. vesicatoria and pepper, including immunocytochemical localization of extracellular polysaccharides and the AvrBs3 protein. Mol. Plant-Microbe Interact 6, 376-386.
28. Clough, S.J., Schell, M.A., and Denny, T.P. (1994). Evidence for involvement of a volatile extracellular factor in Pseudomonas solanacearum virulence gene expression. Mol. Plant-Microbe Interact. 7, 621-630.
29. Collmer, A., and Bauer, D.W. (1994) Erwinia chrysanthemi and Pseudomonas syringae: Plant pathogens trafficking in virulence proteins. In Current Topics in Microbiology and Immunology, Vol. 192: Bacterial Pathogenesis of Plants and Animals - Molecular and Cellular Mechanisms, J.L. Dangl, ed (Berlin: Springer-Verlag), pp. 43-78.
30. Collmer, A., and Keen, N.T. (1986). The role of pectic enzymes in plant pathogenesis. Annu. Rev. Phytopathol. 24, 383-409.
31. Collmer, A., Bauer, D.W., Alfano, J.R., Preston, G., Loniello, A.O., Huang, H.-C., and He, S.Y. (1994). The role of Pseudomonas syringae and Erwinia chrysanthemi hrp gene products in plant interactions. In Advances in Molecular Genetics of Plant-Microbe Interactions, Vol. 3, M.J. Daniels, ed (Dordrecht, The Netherlands: Kluwer Academic Publishers), pp. 49-56.
32. Coplin, D.L., and Majerczak, D.R. (1990). Extracellular polysaccharide genes in Erwinia stewartii: Directed mutagenesis and complementation analysis Mol Plant-Microbe Interact. 3, 286-292.
33. Crute, I.R., and Pink, D.A.C. (1996). Genetics and utilization of pathogen resistance in plants. Plant Cell 8, 1747-1755.
34. Cui, Y., Chatterjee, A., Liu, Y., Dumenyo, C.K., and Chatterjee, A.K. (1995). Identification of a global repressor gene, rsmA, of Erwinia carotovora subsp. carotovora that controls extracellular enzymes, N-(3-oxohexanoyl)-L-homoserine lactone, and pathogenicity in softrotting Erwinia spp. J. Bacteriol. 177, 5108-5115.
35. Dangl, J.L. (1994). The enigmatic avirulence genes of phytopathogenic bacteria. In Current Topics in Microbiology and Immunology, Vol. 192: Bacterial Pathogenesis of Plants and Animals - Molecular and Cellular Mechanisms, J.L. Dangl, ed (Berlin: Springer-Verlag), pp. 99-118.
36. Dangl, J.L., Dietrich, R.A., and Richberg, M.H. (1996). Death don't have no mercy: Cell death programs in plant-microbe interactions. Plant Cell 8, 1793-1807
37. Denny, T.P. (1995). Involvement of bacterial polysaccharide in plant pathogenesis. Annu. Rev. Phytopathol. 33, 173-197.
38. Denny, T.P., and Baek, S.-R. (1991). Genetic evidence that extracellular polysaccharide is a virulence factor of Pseudomonas solanacearum. Mol. Plant-Microbe Interact. 4, 198-206.
39. Dietrich, R.A., Delaney, T.P., Uknes, S.J., Ward, E.R., Ryals, J.A., and Dangl, J.L. (1994). Arabidopsis mutants simulating disease resistance response. Cell 77, 565-577.
40. Dow, J.M., and Daniels, M.J. (1994). Pathogenicity determinants and global regulation of pathogenicity of Xanthomonas campestris pv. campestris. In Current Topics in Microbiology and Immunology, Vol. 192: Bacterial Pathogenesis of Plants and Animals - Molecular and Cellular Mechanisms, J.L. Dangl, ed (Berlin: Springer-Verlag), pp. 29-41.
41. Expert, D., Enard, C., and Masclaux, C. (1996). The role of iron in plant host-pathogen interactions Trends Microbiol. 4, 232-237.
42. Fenselau, S., and Bonas, U. (1995). Sequence and expression analysis of the hrpB pathogenicity locus of Xanthomonas campestris pv. vesicatoria which encodes eight proteins with similarity to components of the Hrp, Ysc, Spa, and Fli secretion systems. Mol. Plant-Microbe Interact. 8, 845-854.
43. Fenselau, S., Balbo, I., and Bonas, U. (1992). Determinants of pathogenicity in Xanthomonas campestris pv. vesicatoria are related to proteins involved in secretion in bacterial pathogens of animals Mol. Plant-Microbe Interact. 5, 390-396.
44. Feys, B.J.F., Benedetti, C.E., Penfold, C.N., and Turner, J.G. (1994). Arabidopsis mutants selected for resistance to the phytotoxin coronatine are male sterile, insensitive to methyl jasmonate, and resistant to a bacterial pathogen. Mol. Plant-Microbe Interact. 6, 751-759.
45. Flor, H.H. (1956). The complementary genic systems in flax and flax rust. Adv. Genet. 8, 29-54.
46. Fuqua, W.C., Winans, S.C., and Greenberg, E.P. (1993). Quorum sensing in bacteria: The LuxR/Lux1 family of cell density responsive transcriptional regulators. J. Bacteriol. 176, 269-275.
47. Fuqua, W.C., Winans, S.C., and Greenberg, E.P. (1996). Census and consensus in bacterial ecosystems: The LuxR-Lux1 family of quorum-sensing transcriptional regulators. Annu. Rev. Microbiol. 50, 727-751.
48. Galan, J.E. (1996). Molecular genetic bases of Salmonella entry into host cells. Mol. Microbiol 20, 263-271.
49. Genin, S., Gough, C.L., Zischek, C., and Boucher, C.A. (1992). Evidence that the hrpB gene encodes a positive regulator of pathogenicity genes from Pseudomonas solanacearum. Mol. Microbiol. 6, 3065-3076.
50. Glazebrook, J., and Ausubel, F.M. (1994). Isolation of phytoalexin-deficient mutants of Arabidopsis thaliana and characterization of their interactions with bacterial pathogens. Proc. Natl. Acad. Sci. USA 91, 8955-8959.
51. Glazener, J.A., Orlandi, E.W., and Bater, C.J. (1936). The active oxygen response of cell suspensions to incompatible bacteria is not sufficient to cause hypersensitive cell death. Plant Physiol. 110, 759-763
52. Goodman, R.N., and Novacky, A.J. (1994). The Hypersensitive Reaction of Plants to Pathogens: A Resistance Phenomenon. (St. Paul, MN: APS Press).
53. Gopalan, S., Bauer, D.W., Alfano, J.R., Loniello, A.O., He, S.Y., and Collmer, A. (1996). Expression of the Pseudomonas syringae avirulence protein AvrB in plant cells alleviates its dependence on the hypersensitive response and pathogenicity (Hrp) secretion system in eliciting genotype-specific hypersensitive cell death. Plant Cell 8, 1095-1105.
54. Gough, C.L., Genin, S., Zischek, C., and Boucher, C.A. (1992). hrp genes of Pseudomonas solanacearum are homologous to pathogenicity determinants of animal pathogenic bacteria and are conserved among plant pathogenic bacteria. Mol. Plant-Microbe Interact. 5, 384-389.
55. Grant, M.R., Godiard, L., Straube, E., Ashfield, T., Lewald, J., Sattler, A., Innes, R.W., and Dangl, J.L. (1995). Structure of the Arabidopsis RPM1 gene enabling dual specificity disease resistance. Science 269, 843-846.
56. Greenberg, J.T., Guo, A., Klessig, D.F., and Ausubel, F.M. (1994). Programmed cell death in plants: A pathogen-triggered response activated coordinately with multiple defense functions. Cell 77, 551-563.
57. Grimm, C., and Panopoulos, N.J. (1989). The predicted protein product of a pathogenicity locus from Pseudomonas syringae pv. phaseolicola is homologous to a highly conserved domain of several procaryotic regulatory proteins. J. Bacteriol 171, 5031-5038.
58. Grimm, C., Aufsatz, W., and Panopoulos, N.J. (1995). The hrpRS locus of Pseudomonas syringae pv. phaseolicola constitutes a complex regulatory unit. Mol. Microbiol. 15, 155-165.
59. Groisman, E.A., and Ochman, H. (1993). Cognate gene clusters govern invasion of host epithelial cells by Salmonella typhimurium and Shigella flexneri. EMBO J. 12, 3779-3787.
60. Gross, D.C. (1991). Molecular and genetic analysts of toxin production by pathovars of Pseudomonas synngae. Annu Rev. Phytopathol. 29, 247-278.
61. Hahn, M.G., Bucheli, P., Cervone, F., Doares, S.H., O'Neill, R.A., Darvill, A., and Albersheim, P. (1988). The roles of cell wall constituents in plant-pathogen interactions. In Plant-Microbe Interactions: Molecular and Genetic Perspectives, Vol. 3, E. Nester and T. Kosuge, eds (New York: Macmilian), pp. 131-181.
62. Hammond-Kosack, K.E., and Jones, J.D.G. (1996). Resistance gene-dependent plant defense responses Plant Cell 8, 1773-1791.
63. Handelsman, J., and Stabb, E.V. (1996). Biocontrol of soilborne plant pathogens. Plant Cell 8, 1855-1869.
64. Pss: A protein that is secreted via the Hrp pathway and elicits the hypersensitive response in plants. Cell 73, 1255-1266.
65. He, S.Y., Bauer, D.W., Collmer, A., and Beer, S.V. (1994). Hypersensitive response elicited by Erwinia amylovora harpin requires active plant metabolism. Mol Plant-Microbe Interact. 7, 289-292.
66. Heu, S., and Hutcheson, S.W. (1993). Nucleotide sequence and properties of the hrmA locus associated with the Pseudomonas syringae pv. syringae 61 hrp gene cluster. Mol. Plant-Microbe Interact. 6, 553-564.
67. Hirano, S.S., and Upper, C.D. (1990). Population biology and epidemiology of Pseudomonas syringae. Annu. Rev. Phytopathol. 28, 155-177.
68. Holliday, M.J., Keen, N.T., and Long, M. (1981). Cell death patterns and accumulation of fluorescent material in the hypersensitive response of soybean leaves to Pseudomonas syringae pv. glycinea. Physiol. Plant Pathol. 18, 279-287.
69. Hrabak, E.M., and Willis, D.K. (1992). The lemA gene required for pathogenicity of Pseudomonas syringae pv. syringae on bean is a member of a family of two-component regulators. J. Bacteriol. 174, 3011-3020.
70. Hrabak, E.M., and Willis, D.K. (1993). Involvement of the lemA gene in production of syringomycin and protease by Pseudomonas syringae pv. syringae. Mol. Plant-Microbe Interact. 6, 368-375.
71. Huang, H.-C., Schuurink, R., Denny, T.P., Atkinson, M.M., Baker, C.J., Yucel, I., Hutcheson, S.W., and Collmer, A. (1988) Molecular cloning of a Pseudomonas synrigae pv. syringae gene cluster that enables Pseudomonas fluorescens to elicit the hypersensitive response in tobacco. J. Bacteriol. 170, 4748-4756.
72. Huang, H.-C., Hutcheson, S.W., and Collmer, A. (1991). Characterization of the hrp cluster from Pseudomonas syringae pv. syringae 61 and TnphoA tagging of genes encoding exported or membrane-spanning Hrp proteins. Mol. Plant-Microbe Interact. 4, 469-476.
73. Huang, H.-C., He, S.Y., Bauer, D.W., and Collmer, A. (1992). The Pseudomonas syringae pv. syringae 61 hrpH product: An envelope protein required for elicitation of the hypersensitive response in plants. J. Bacteriol 174, 6878-6885.
74. Huang, H.-C., Xiao, Y., Lin, R.-H., Lu, Y., Hutcheson, S.W., and Collmer, A. (1993). Characterization of the Pseudomonas syringae pv. syringae hrpJ and hrpl genes: Homology of Hrpl to a superfamily of proteins associated with protein translocation. Mol. Plant-Microbe Interact. 6, 515-520.
75. Pss secretion that are arranged colinearly with Yersinia ysc homologs. Mol Plant-Microbe Interact. 8, 733-746
76. Huang, J., Carney, B.F., Denny, T.P., Weissinger, A.K., and Schell, M.A. (1995). A complex network regulates expression of eps and other virulence genes in Pseudomonas solanacearum J. Bacteriol. 177, 1259-1267.
77. Hugouvieux-Cotte-Pattat, N., Condemine, G., Nasser, W., and Reverchon, S. (1996). Regulation of pectinolysis in Erwinia chrysanthemi. Annu. Rev. Microbiol. 50, 213-257.
78. Hutchison, M.L., Tester, M.A., and Gross, D.C. (1995). Role of biosurfactant and ion channel-forming activities of syringomycin in transmembrane ion flux: A model for the mechanism of action in the plant-pathogen interaction Mol. Plant-Microbe Interact 8, 610-620.
79. Huynh, T.V., Dahlbeck, D., and Staskawicz, B.J. (1989). Bacterial blight of soybean: Regulation of a pathogen gene determining host cultivar specificity. Science 245, 1374-1377.
80. Innes, R.W., Bent, A.F., Kunkel, B.N., Bisgrove, S.R., and Staskawicz, B.J. (1993) Molecular analysis of avirulence gene avrRpt2 and identification of a putative regulatory sequence common to all known Pseudomonas syringae avirulence genes J. Bacteriol 175, 4859-4869.
81. Jakobek, J.L., and Lindgren, P.B. (1993). Generalized induction of defense responses in bean is not correlated with the induction of the hypersensitive reaction. Plant Cell 5, 49-56.
82. Jakobek, J.L., Smith, J.A., and Lindgren, P.B. (1993). Suppression of bean defense responses by Pseudomonas syringae. Plant Cell 5, 57-63.
83. Jones, S., Yu, B., Bainton, N.J., Birdsall, M., Bycrott, B.W., Chhabra, S.R., Cox, A.J.R., Golby, P., Reeves, P.J., Stephens, S., Winson, M.K., Salmond, G.P.C., Stewart, G.S.A.B., and Williams, P. (1993). The lux autoinducer regulates the production of exoenzyme virulence determinants in Erwinia carotovora and Pseudomonas aeruginosa. EMBO J. 12, 2477-2482.
84. Kang, Y., Huang, J., Guozhang, M., He, L.-Y., and Schell, M.A. (1994). Dramatically reduced virulence of mutants of Pseudomonas solanacearum defective in export of extracellular proteins across the outer membrane. Mol. Plant-Microbe Interact. 7, 370-377.
85. Kao, C.C., Barlow, E., and Sequeira, L. (1992). Extracellular polysaccharide is required for wild-type virulence of Pseudomonas solacearum. J. Bacteriol. 174, 1068-1071.
86. Keen, N.T. (1990). Gene-for-gene complementarity in plant-pathogen interactions. Annu. Rev. Genet. 24, 447-463.
87. Keen, N.T., Tamaki, S., Kobayashi, D., Gerhold, D., Stayton, M., Shen, H., Gold, S., Lorang, J., Thordal-Christensen, H., Dahlbeck, D., and Staskawicz, B. (1990). Bacteria expressing avirufence gene D produce a specific elicitor of the soybean hypersensitive reaction. Mol. Plant-Microbe Interact. 3, 112-121.
88. Kelemu, S., and Collmer, A. (1993). Erwinia chrysanthemi EC16 produces a second set of plant-inducible pectate lyase isozymes. Appl. Environ. Microbiol. 59, 1756-1761.
89. Klement, Z. (1963). Rapid detection of pathogenicity of phytopathogenic pseudomonads. Nature 199, 299-300.
90. Klement, Z. (1982). Hypersensitivity. In Phytopathogenic Prokaryotes, Vol. 2, M.S. Mount and G.H. Lacy, eds (New York: Academic Press), pp. 149-177.
91. Klement, Z., Fartas, G.L., and Lovrekovich, L. (1964). Hypersensitive reaction induced by phytopathogenic bacteria in the tobacco leaf. Phytopathology 54, 474-477.
92. Kobayshi, D.Y., Tamaki, S.J., and Keen, N.T. (1989). Cloned avirulence genes from the tomato pathogen Pseudomonas syringae pv. tomato confer cultivar specificity on soybean. Proc. Natl. Acad. Sci. USA 86, 157-161.
93. Leach, J.E., and White, F.F. (1996). Bacterial avirulence genes. Annu. Rev. Phytopathol. 34, 153-179.
94. Leigh, J.A., and Walker, G.C. (1994). Exopolysaccharides of Rhizobium: Synthesis, regulation and symbiotic function. Trends Genet. 10, 63-67.
95. 2 from the oxidative burst orchestrates the plant hypersensitive disease resistance response. Cell 79, 583-593.
96. Liao, C.-H., Hung, H.Y., and Chatterjee, A.K. (1988). An extracellular pectate lyase is the pathogenicity factor of the soft-rotting bacterium Pseudomonas viridiflava. Mol. Plant-Microbe Interact. 1, 199-206.
97. Pss secretion. Mol. Plant-Microbe Interact 7, 488-497.
98. Lindgren, P.B., Peet, R.C., and Panopoutos, N.J. (1986). Gene cluster of Pseudomonas syringae pv. "phaseolicola" controls pathogenicity of bean plants and hypersensitivity on nonhost plants. J. Bacteriol. 168, 512-522.
99. Lojkowska, E., Masclaux, C., Boccara, M., Robert-Baudouy, J., and Hugouvieux-Cotte-Pattat, N. (1995). Characterization of the pel/L. gene encoding a novel pectate lyase of Erwinia chrysanthemi 3937. Mol. Microbiol. 16, 1183-1195.
100. Long, M., Barton-Willis, P., Staskawicz, B.J., Dahlbeck, D., and Keen, N.T. (1985). Further studies on the relationship between glyceollin accumulation and the resistance of soybean leaves to Pseudomonas syringae pv. glycinea. Phytopathology 75, 235-239.
101. Long, S.R. (1996). Rhizobium symbiosis: Nod factors in perspective. Plant Cell 8, 1885-1898.
102. Lorang, J.M., and Keen, N.T. (1995). Characterization of avrE from Pseudomonas syringae pv. tomato: A hrp-linked avirulence locus consisting of at least two transcriptional units. Mol. Plant-Microbe Interact. 8, 49-57.
103. Lorang, J.M., Shen, H., Kobayashi, D., Cooksey, D., and Keen, N.T. (1994). avrA and avrE in Pseudomonas syringae pv tomato PT23 play a role in virulence on tomato plants. Mol. Plant-Microbe Interact. 7, 508-515.
104. Macnab, R.M. (1996). Flagella and motility. In Escherichia coli and Salmonella, Vol. 1, F.C. Neidhardt, ed (Washington, DC: ASM Press), pp. 123-145.
105. Mansfield, J., Jenner, C., Hockenhull, R., Bennett, M.A., and Stewart, R. (1994). Characterization of avrPphE, a gene for cultivarspecific avirulence from Pseudomonas syringae pv. phaseolicola which is physically linked to hrpY, a new hrp gene identified in the halo-blight bacterium. Mol. Plant-Microbe Interact. 7, 726-739.
106. Mathews, D.E., and Durbin, R.D. (1990). Tagetitoxin inhibits RNA synthesis directed by RNA polymerases from chloroplasts and Escherichia coli. J. Biol. Chem. 265, 493-498.
107. Mazzola, M., Cook, R.J., Thomashow, L.S., Weller, D.M., and Pierson III, L.S. (1992). Contribution of phenazine antibiotic biosynthesis to the ecological competence of fluorescent pseudomonads in soil habitats. Appl. Environ. Microbiol. 58, 2616-2624.
108. Meier, B.M., and Slusarenko, A.J. (1993). Spatial and temporal accumulation of defense gene transcripts in bean (Phaseolus vulgaris) leaves in relation to bacteria-induced hypersensitive cell death. Mol. Plant-Microbe Interact. 6, 453-466.
109. Midland, S.L., Keen, N.T., Sims, J.J., Midland, M.M., Stayton, M.M., Burton, V., Smith, M.J., Mazzola, E.P., Graham, K.J., and Clardy, J. (1993). The structures of syringolides 1 and 2: Novel C glycosidic elicitors from Pseudomonas syringae pv. tomato J. Org. Chem. 58, 2940-2945.
110. Mindrinos, M., Katagiri, F., Yu, G.-L., and Ausubel, F.M. (1994). The A. thaliana disease resistance gene RPS2 encodes a protein containing a nucleotide-binding site and leucine-rich repeats. Cell 78, 1089-1099.
111. Mittal, S., and Davis, K.R. (1995). Role of the phytotoxin coronatine in the infection of Arabidopsis thaliana by Pseudomonas syringae pv tomato. Mol. Plant-Microbe Interact. 8, 165-171.
112. Mo, Y.-Y., and Gross, D.C. (1991). Plant signal molecules activate the syrB gene, which is required for syringomycin production by Pseudomonas syringae pv. syringae. J. Bacteriol. 173, 5784-5792
113. Niepold, F., Anderson, D., and Mills, D. (1985). Cloning determinants of pathogenesis from Pseudomonas syringae pathovar syringae Proc. Natl. Acad. Sci. USA 82, 406-410.
114. Oku, T., Alvarez, A.M., and Kado, C.I. (1995). Conservation of the hypersensitivity-pathogenicity regulatory gene hrpX of Xanthomonas campestris and X. oryzae. DNA Sequence 5, 245-249.
115. Osbourn, A.E., Barber, C.E., and Daniels, M.J. (1967). Identification of plant-induced genes of the bacterial pathogen Xanthomonas campestris pathovar campestris using a promoter-probe plasmid. EMBO J. 6, 23-28.
116. Palmer, D.A., and Bender, C.L. (1995). Ultrastructure of tomato leaf tissue treated with the Pseudomonad phytotoxin coronaline and comparison with methyl jasmonate. Mol. Plant-Microbe Interact. 8, 683-692
117. Palva, T.K., Holmstrom, K.-O., Heino, P., and Palva, E.T. (1993). Induction of plant defense response by exoenzymes of Erwinia carotovora subsp. carotovora. Mol. Plant-Microbe Interact. 6, 190-196
118. Perombelon, M.C.M., and Kelman, A. (1980). Ecology of the soft rot erwinias. Annu. Rev. Phytopathol. 18, 361-387.
119. Pierce, M., and Essenberg, M. (1987). Localization of phytoalexins in fluorescent mesophyll cells isolated from bacterial blight-infected cotton cotyledons and separated from other cells by fluorescence-activated cell sorting. Physiol. Mol. Plant Pathol 31, 273-290.
120. Pierson III, L.S., and Pierson, E.A. (1996). Phenazine antibiotic production in Pseudomonas aureofaciens: Role in rhizosphere ecology and pathogen suppression. FEMS Microbiol. Lett. 136, 101-108.
121. Pierson III, L.S., Keppenne, V.D., and Wood, D.W. (1994). Phenazine antibiotic biosynthesis in Pseudomonas aureofaciens 30-84 is regulated by PhzR in response to cell density. J. Bacteriol. 176, 3966-3974.
122. Pirhonen, M., Flego, D., Heikinheimo, R., and Palva, E.T. (1993). A small diffusible signal molecule is responsible for the global control of virulence and exoenzyme production in the plant pathogen Erwinia carotovora. EMBO J. 12, 2467-2476.
123. Pirhonen, M.U., Lidell, M.C., Rowley, D.L., Lee, S.W., Jin, S., Liang, Y., Silverstone, S., Keen, N.T., and Hulcheson, S.W. (1996). Phenotypic expression of Pseudomonas syringae avr genes in E. coli is linked to the activities of the hrp-encoded secretion system. Mol. Plant-Microbe Interact. 9, 252-260.
124. Preston, G., Huang, H.-C., He, S.Y., and Collmer, A. (1995). The HrpZ proteins of Pseudomonas syringae pvs. syringae, glycinea, and tomato are encoded by an operon containing Yersinia ysc homologs and elicit the hypersensitive response in tomato but not soybean. Mol. Plant-Microbe Interact. 8, 717-732.
125. Rahme, L.G., Mindrinos, M.N., and Panopoulos, N.J. (1992). Plant and environmental sensory signals control the expression of hrp genes in Pseudomonas syringae pv. phaseolicola. J. Bacteriol. 174, 3499-3507.
126. Rahme, L.G., Stevens, E.J., Wolfort, S.F., Shao, J., Tompkins, R.G., and Ausubel, F.M. (1995). Common virulence factors for bacterial pathogenicity in plants and animals. Science 268, 1899-1902.
127. Reuber, T.L., and Ausubel, F.M. (1996). Isolation of Arabidopsis genes that differentiate between resistance responses mediated by the RPS2 and RPM1 disease resistance genes. Plant Cell 8, 241-249.
128. Rich, J.J., Kinscherf, T.G., Kitten, T., and Willis, D.K. (1994). Genetic evidence that the gacA gene encodes the cognate response regulator for the lemA sensor in Pseudomonas syringae. J. Bacteriol. 176, 7468-7475.
129. Ritter, C., and Dangl, J.L. (1995). The avrRpm1 gene of Pseudomonas syringae pv. maculicola is required for virulence on Arabidopsis. Mol. Plant-Microbe Interact 8, 444-453.
130. Ritter, C., and Dangl, J.L. (1996). Interference between two specific pathogen recognition events mediated by distinct plant disease resistance genes. Plant Cell 8, 251-257.
131. Rosqvist, R., Magnusson, K.E., and Wolf-Watz, H. (1994). Target cell contact triggers expression and polarized transfer of Yersinia YopE cytotoxin into mammalian cells. EMBO J. 13, 964-972.
132. Rowley, K.B., Clements, D.E., Mandel, M., Humphreys, T., and Patil, S.S. (1993). Multiple copies of a DNA sequence from Pseudomonas syringae pathovar phaseolicola abolish thermoregulation of phaseolotoxin production. Mol. Microbiol. 8, 625-635.
133. Ryals, J.A., Neuenschwander, U.H., Willits, M.G., Molina, A., Steiner, H.-Y., and Hunt, M.D. (1996). Systemic acquired resistance Plant Cell 8, 1809-1819.
134. Salmond, G.P.C. (1994). Secretion of extracellular virulence factors by plant pathogenic bacteria. Annu. Rev. Phytopathol. 32, 181-200.
135. Salmond, G.P.C., and Reeves, P.J. (1993). Membrane traffic wardens and protein secretion in Gram-negative bacteria. Trends Biochem. Sci. 18, 7-12.
136. Salmond, G.P.C., Bycroft, B.W., Stewart, G.S.A.B., and Williams, P. (1995). The bacterial "enigma": Cracking the code of cell-cell communication. Mol. Microbiol. 16, 615-624
137. Schulte, R., and Bonas, U. (1992). A Xanthomonas pathogenicity locus is induced by sucrose and sulfur-containing amino acids. Plant Cell 4, 79-86.
138. Shen, H., and Keen, N.T. (1993). Characterization of the promoter of avirulence gene D from Pseudomonas syringae pv. tomato. J. Bactenol. 175, 5916-5924.
139. Sheng, J., and Citovsky, V. (1996). Agrobacterium-plant cell DNA transport: Have virulence proteins, will travel Plant Cell 8, 1699-1710.
140. Sory, M.-P., and Cornelis, G.R. (1994). Translocation of a hybrid YopE-adenylate cyclase from Yersinia enterocolitica into HeLa cells. Mol Microbiol. 14, 583-594.
141. Staskawicz, B.J., Dahlbeck, D., and Keen, N.T. (1984). Cloned avirulence gene of Pseudomonas syringae pv glycinea determines race specific incompatibility on Glycine max (L) Merr. Proc. Natl. Acad. Sci. USA 81, 6024-6028.
142. Staskawicz, B.J., Ausubel, F.M., Baker, B.J., Ellis, J.G., and Jones, J.D.G. (1995). Molecular genetics of plant disease resistance. Science 268, 661-667.
143. Steinberger, E.M., and Beer, S.V. (1988). Creation and complementation of pathogenicity mutants of Erwinia amylovora. Mol. Plant-Microbe Interact 1, 135-144.
144. Swords, K.M.M., Dahlbeck, D., Kearney, B., Roy, M., and Staskawicz, B.J. (1996) Spontaneous and induced mutations in a single open reading frame alter both virulence and avirulence in Xanthomonas campestris pv. vesicatoria avrBs2. J. Bacteriol., in press.
145. Takemoto, J.Y. (1992). Bacterial phytotoxin syringomycin and its interaction with host membranes In Molecular Signals in Plant-Microbe Communications, D.P.S. Verma, ed (Boca Raton, FL: CRC Press), pp 247-260.
146. Turner, J.G., and Novacky, A. (1974). The quantitative relation between plant and bacterial cells involved in the hypersensitive reaction. Phytopathology 64, 885-890.
147. Ullrich, M., and Bender, C.L. (1994) The biosynthetic gene cluster for coronamic acid, an ethylcyclopropyl amino acid, contains genes homologous to amino acid-activating enzymes and thioesterases. J. Bacteriol 176, 7574-7586.
148. Ullrich, M., Penaloza-Vazquez, A., Bailey, A.-M., and Bender, C.L. (1995) A modified two-component regulatory system is involved in temperature-dependent biosynthesis of the Pseudomonas syringae phytotoxin coronatine. J. Bacteriol. 177, 6160-6169.
149. Van Gijsegem, F., Genin, S., and Boucher, C. (1993). Evolutionary conservation of pathogenicity determinants among plant and animal pathogenic bacteria Trends Microbiol. 1, 175-180.
150. Van Gijsegem, F., Gough, C., Zischek, C., Niqueux, E., Arlat, M., Genin, S., Barberis, P., German, S., Castello, P., and Boucher, C. (1995). The hrp gene locus of Pseudomonas solanacearum, which controls the production of a type III secretion system, encodes eight proteins related to components of the bacterial flagellar biogenesis complex. Mol. Microbiol. 15, 1095-1114.
151. Walton, J.D. (1996). Host-selective toxins: Agents of compatibility. Plant Cell 8, 1723-1733.
152. Wei, Z.-M., and Beer, S.V. (1995). hrpL activates Erwinia amylovora hrp gene transcription and is a member of the ECF subfamily of factors. J. Bacteriol. 177, 6201-6210.
153. Wei, Z.-M., Laby, R.J., Zumoff, C.H., Bauer, D.W., He, S.Y., Collmer, A., and Beer, S.V. (1992a). Harpin, elicitor of the hypersensitive response produced by the plant pathogen Erwinia amylovora. Science 257, 85-88.
154. Wei, Z.-M., Sneath, B.J., and Beer, S.V. (1992b) Expression of Erwinia amylovora hrp genes in response to environmental stimuli. J. Bacteriol. 174, 1875-1882.
155. Weiler, E.W., Kutchan, T.M., Gorba, T., Brodschelm, W., Niesel, U., and Bublitz, G. (1994). The Pseudomonas phytotoxin coronatine mimics octadecanoid signaling molecules in higher plants. FEBS Lett. 345, 9-13.
156. Wengelnkik, K., and Bonas, U. (1996). HrpXv, an AraC-type regulator, activates expression of five of the six loci in the hrp cluster of Xanthomonas campestris pv vesicatoria. J. Bacteriol. 178, 3462-3469.
157. Whalen, M.C., Stall, R.E., and Staskawicz, B.J. (1988). Characterization of a gene from a tomato pathogen determining hypersensitive resistance in non-host species and genetic analysis of this resistance in bean. Proc. Natl. Acad. Sci. USA 85, 6743-6747.
158. Willis, D.K., Barta, T.M., and Kinscherf, T.G. (1991). Genetics of toxin production and resistance in phytopathogenic bacteria. Experientia 47, 765-771.
159. Xiao, Y., and Hutcheson, S. (1994). A single promoter sequence recognized by a newly identified alternate sigma factor directs expression of pathogenicity and host range determinants in Pseudomonas syringae. J. Bacteriol. 176, 3089-3091 Author's correction. 176, 6158.
160. Xiao, Y., Lu, Y., Heu, S., and Hutcheson, S.W. (1992). Organization and environmental regulation of the Pseudomonas syringae pv. synngae 61 hrp cluster J. Bacteriol. 174, 1734-1741.
161. Xiao, Y., Hue, S., Yi, J., Lu, Y., and Hutcheson, S.W. (1994). Identification of a putative alternate sigma factor and characterization of a multicomponent regulatory cascade controlling the expression of Pseudomonas syringae pv. syringae Pss61 hrp and hrmA genes. J. Bacteriol. 176, 1025-1036.
162. Yabuuchi, E., Kosako, Y., Oyaizu, H., Yano, I., Hotta, H., Hashimoto, Y., Ezaki, T., and Arakawa, M. (1992). Proposal of Burkholderia gen. nov. and transfer of seven species of the genus Pseudomonas homology group II to the new genus, with the type species Burkholderia cepacia (Palleroni and Holmes 1981) comb. nov. Microbiol. Immunol. 36, 1251-1275.
163. Yabuuchi, E., Kosato, Y., Yano, I., Hotta, H., and Nishiuchi, Y. (1995). Transfer of two Burkholderia and an Alcaligenes species to Ralstonia gen. nov.: Proposal of Ralstonia pickettii (Ralston, Palleroni and Doudoroff 1973) comb. nov., Ralstonia solanacearum (Smith 1896) comb. nov. and Ralstonia eutropha (Davis 1969) comb. nov. Microbiol. Immunol. 39, 897-904.
164. Yang, Y., and Gabriel, D.W. (1995). Xanthomonas avirulence/pathogenicity gene family encodes functional plant nuclear targeting signals. Mol. Plant-Microbe Interact. 8, 627-631.
165. Yang, Y., Yuan, Q., and Gabriel, D.W. (1996). Watersoaking function(s) of XcmH1005 are redundantly encoded by members of the Xanthomonas avr/pth gene family. Mol. Plant-Microbe Interact. 9, 105-113.
166. Yang, Z., Cramer, C.L., and Lacy, G.H. (1992). Erwinia carotovora subsp. carotovora pectic enzymes: In planta gene activation and rates in soft-rot pathogenesis. Mol. Plant-Microbe Interact. 5, 104-112.
167. Young, J.M. (1974). Development of bacterial populations in vivo in relation to plant pathogenicity. N.Z. J. Agric. Res. 17, 105-113.
168. Young, S.A., White, F.F., Hopkins, C.M., and Leach, J.E. (1994). AVRXa10 protein is in the cytoplasm of Xanthomonas oryzae pv. oryzae. Mol. Plant-Microbe Interact. 7, 799-804.
169. Zhang, J.-H., Quigley, N.B., and Gross, D.C. (1995). Analysis of the syrB and syrC genes of Pseudomonas syringae pv. syringae indicates that syringomycin is synthesized by a thiotemplate mechanism. J. Bacteriol. 177, 4009-4020.
170. Zupan, J.R., and Zambryski, P. (1995). Transfer of T-DNA from Agrobacterium to the plant cell. Plant Physiol. 107, 1041-1047.