Preface. Section 1: Symposia. Towards the Next Millennium: Challenges and Prospects with Plant Associated Bacteria; A.K. Vidaver. Control of Bacterial Diseases Through Pathogen Freedom of Planting Material; J.D. Janse. Future Development of Chemical and Biological Controls for Bacterial Diseases of Plants; T.J. Burr. Classical and Engineered Breeding for Resistance to Bacterial Plant Diseases; J.P. Paulin, M.N. Brisset. Classification, Naming, and Plant Pathogenic Bacteria-What is to be done? J.M. Young. Taxonomy of Phytopathogenic Pseudomonads; L. Gardan, R. Christen. The `Candidatus Phytoplasma' Concept: New Names But Not Yet a Taxonomy for the Fastidious Plant Pathogenic Mollicutes; G. Firrao. Type III Secretion in Root-Colonising Pseudomonas; G.M. Preston, et al. The Role of AvrXa7 and Xanthomonas oryzae pv. oryzae in Resistance and Disease; F.F. White, et al. Molecular Approaches for Elucidating the in situ Activities of Bacterial Biological Control Agents; J.E. Loper, et al. Endophytic Bacteria and Biocontrol of Plant Diseases; S. Alstrom, J.W.L. Van Vuurde. Environmental Applications of Plant Growth-Promoting Bacteria of the Genus Azospirillum; Y. Bashan, et al. 10 Additional Chapters. Section 2: Taxonomy and Diversity. Molecular Differentiation of Erwinia amylovora Strains from Europe and the Mediterranean Region; S. Jock, et al. Genetic Diversity of Selected Bacterial Populations in North Carolina; F.J. Louws, et al. Genetic Diversity of Pseudomonas syringae Pathovars and Related Species Assessed by DNA Heteroduplex Mobility Assay; L. Sutra, et al. Two Xanthomonad Pathogens, One from Acer glabrum and One from Sambucus nigra; S.K. Mohan, V.P. Bijman. Genetic Diversity of Xylella fastidiosa Associated with Citrus Variegated Chlorosis in Brazil; R.P. Leite Jr., et al. Usefulness of IS1595 as a Molecular Tool for Epidemiological Typing of the Xanthomonas Pathovar mangiferaeindicae, Casual Agent of Mango Bacterial Black Spot; A. Pruvost, et al. Phylogenetic Analysis of the pPT23A Plasmid Family of Pseudomonas syringae; G.W. Sundin, et al. Phylogenetic Analysis of Xanthomonas Strains Based on the Nucleotide Sequences of 16S-23S rRNA Spacer Region, 23S rRNA and gyrB Genes; A. Ochiai, et al. Genetic Diversity of Xanthomonas sp. pv. passiflorae Causing the Bacterial Spot on Passion Fruit in Brazil; L.P.C. Caramori, et al. Six New Species are Delineated Within Erwinia chrysanthemi; R. Samson, et al. 2 Additional Chapters. Section 3: Pathogenicity and Virulence Factors. Metabolic Colonisation: the Fate of a Leafy Gall; D. Vereecke, et al. Extracellular Enzymes Produced by Leifsonia (Clavibacter) xyli subsp. cynodontis; M. Haapalainen, et al. Membrane Vesicle Mediated Transport of Virulence-Factors and of Elicitors for Defense-Response; I. Schroder, et al. Agrobacterium tumefaciens Chromosomal Genes Requires for Virulence and Attachment to Host Cells; A.G. Matthysse, et al. Biotic and Abiotic Elicitation of Apple Defenses Against Fire Blight; M.N. Brisset, et al. 3 Additional Chapters Section 4: Genetics of Pathogenicity. The hrp genes of Pantoea stewartii are Regulated by a Complex System that Senses Environmental Signals; M. Merighi, et al. The Hrp Protein Secretion System is not Required for Coronatine Biosynthesis in Pseudomonas syringae pv. tomato DC3000; A. Penaloza-Vazquez, et al. Biosynthesis of Exopolysaccharide by Erwinia amylovora and its Enzymatic Degradation; W.S. Kim, et al. Distribution and Characterisation of vir Gene Homologues in Pseudomonas syringae Pathovars; R.W. Jackson, et al. Isolation of Novel Avirulence Genes from Pseudomonas syringae pv. pisi.; D.L. Arnold, et al. Isolation of the Oxolinic Acid Resistance Related-Gene from Genomic DNA of Burkholderia glumae; Y. Hikichi, et al. Comparison of Regulatory Proteins for Pectate Lyase Synthesis between Erwinia chrysanthemi and E. carotovora subsp. carotovora; H. Matsumoto, et al. Analysis of Structure and Function of the Na+/Glucose Symporter (SglS)-like Gene of Xanthomonas oryzae pv oryzae; A. Furutani, et al. Roles of popA for the Pathogenicity of Ralstonia slanacearum Pathogenic to Tobacco; A. Kanda, et al. 3 Additional Chapters Section 5: Diseases. The Causal Bacterium of Red Stripe of Rice; H. Kaku, H. Ochiai. New Occurrence of Xanthomonas campestris pv. campestris as a Pathogen of Some Brassica spp. in Yugoslavia; A. Obradovic, et al. Bacterial Diseases of Pepper in Yugoslavia; A. Obradovic, et al. Bacterial Blight of Cassava in Togo: Its Importance, the Virulence of the Pathogen and the Resistance of Varieties; A. Banito, et al. Halo Blight of Oats in Scandinavia; P. Persson, A. Sletten. Bacterial Soft Rot of Carrot, Parsley, and Celery; V. Gavrilovic, et al. Emerging Bacterial Pathogens of Crucifers in the Salinas Valley of California; N.A. Cintas, et al. Section 6: Disease Control. Logistic Regression as a Statistical Tool to Analyse Susceptibility to Crown Gall; B. Lastra, et al. Integrated Control of Bacterial Diseases of Cassava and Cowpea in West Africa; K. Wydra, et al. Using Stigma Imprints to Determine Fire Blight Risks in Pear and Apple Orchards; S.V. Thomson, et al. Control of Plant Pathogenic Bacteria in Soil with Organic Amendments; G. Lazarovits, et al. Reduction of Bacterial Leaf Speck Disease (Pseudomonas syringae pv tomato) in Tomatoes Treated with a Combination of Azospirillum brasilense, Bactericides, and Mild Heat; Y. Bashan. Studies on Resistance of Cassava Genotypes to Bacterial Blight; V. Zinsou, et al. Reaction of Capsicum genotypes to Bacterial Wilt and Bacterial Spot; C.A. Lopes, A.M. Quezadao-Duval. Selection of Cowpea Genotypes Resistant to Bacterial Blight Caused by Xanthomonas campestris pv. vignicola; R. Sikirou, et al. 6 Additional Chapters Section 7: Ecology. Population Dynamics of the Onion Phytopathogen Burkholderia cepacia in Organic Soils Cropped to Onion; G.L. Mark, J.W. Lorbeer. Population Dynamics of the Plant Growth-Promoting Bacterium Azospirillum brasilense and the Pathogen Pseudomonas syringae pv tomato in the Tomato Rhizosphere and Foliage and its use as a Strategy to Control Bacterial Leaf Speck of Tomato; Y. Bashan. Sudden Appearance of the Tomato Race of Xanthomonas campestris pv. vesicatoria in Yugoslavia; A. Obradovic, et al. The Role of the Grasshopper Zonocerus variegatus as Vector of Cassava Bacterial Blight in West Africa; M. Zandjanakou, et al. `Tristeza' and Death of Agave tequilana Weber var. Blue; L. Fucikovsky. Populations of Xanthomonas axonopodis pv. citri in Endemic Areas; M. Rybak, B.I. Canteros. Sudden Appearance of the Tomato Race of Xanthomonas campestris pv. vesicatoria in Yugoslavia; A. Obradovic, et al. The Role of the Grasshopper Zonocerus variegatus as Vector of Cassava Bacterial Blight in West Africa; M. Zandjanakou, et al. `Tristeza' and Death of Agave tequilana Weber var. Blue; L. Fucikovsky. Populations of Xanthomonas axonopodis pv. citri in Endemic Areas; M. Rybak, B.I. Canteros. Incidence of Biovars 1 and 2 of Ralstonia solanacearum in Potato Fields at Rio Grande do Sul State, Brazil; J.R.P. Silveira, et al. Persistence of Clavibacter michiganensis subsp. sepedonicus in Sterilized Soil but Failure to Confirm It's Survival Overwinter in Field Soil; L. Ward, et al. Analysis of the Effect of Ultraviolet-B Radiation on the Culturable Bacterial Community of Peanut; J.L. Jacobs, G.W. Sundin. Section 8: Detection and Diagnosis. Application of recA PCR-RFLP for Differentiation of Erwinia carotovora subsp. carotovora and Erwinia carotovora subsp. atroseptica; M. Waleron, et al. Development of a DNA Array for Identification and Detection of Pathogenic Bacteria Associated with Potato; A. Fessehaie, et al. Differentiation of Bacterial Populations in Seed Extracts by Flow Cytometry; A.M. Alvarez. Analysis of Xanthomonas campestris pv. glycines from Soybean Using Simple Serological Procedures; S. Prathuangwong, et al. PCR Detection of the Onion Pathogen Pantoea ananatis on Various Weeds and Crops in Georgia, USA; R. Gitaitis, et al. An Internal Control for the Diagnosis of Citrus Bacterial Canker by PCR; J. Cubero, et al. Detection of Pathogenic Streptomyces scabies from Soil Using PCR Primers for Nec1 Virulence Locus; G. Lazarovits, et al. 7 Additional Chapters. Author Index. Index of Bacteria.