Plant Pathogenic Bacteria: Proceedings Of The Sixth International Conference On Plant Pathogenic Bacteria, Maryland, June 2?7, 1985 (current Plant Science And Biotechnology In Agriculture)

More than 270 scientists from 33 countries attended the 6th International Conference on Plant Pathogenic Bacteria in College Park, Maryland, June 2-7, 1985. The Conference was jOintly sponsored by the International Society of Plant Pathology, Bacteria Section and by the United States Department of Agriculture, Agriculture Research Service. The Conference provided an opportunity for the presentation and discussion of recent developments in phytobacteriology. The Conference was organized into five symposia, seven discussion sessions, contributed papers and poster presentations. More than 230 contributions were presented under the following topics: ice nucleating bacteria; detection, identification, nomenclature and taxonomy of phytopathogenic bacteria; applications and impact of new biotechnologies on phytobacteriology; bacterial phytotoxins; diagnostic phytobacteriology; management of bacterial plant diseases; and molecular biology, genetics and ecology, epidemiology of phytopathogenic bacteria. In addition, special sessions focused on Agrobacterium, Erwinia, Psedomonas and fastidious prokaryotes. This reflected the broad spectrum of current research activity in phytobacteriology. Furthermore, interest in this series of conferences clearly continues to increase. Key research scientists who are currently making major advances in phytobacteriology participated in the Symposia and Discussions. One of the most significant recent changes that has occurred in the field of plant pathology generally is the dynamic growth of research in which recombinant DNA technology is being applied in basic studies on bacterial plant pathogens. Results from investigations on the crown gall bacterium have stimulated expansion of research on other bacterial systems. Front Matter....Pages I-XXIII T-DNA Border Sequences Required for Crown Gall Tumorigenesis....Pages 1-10 Coregulation of Promoters in the T-DNA and Virulence Region of the Agrobacterium Tumefaciens Plasmid pTIC58....Pages 11-17 Genes Involved in Indole Acetic Acid Production in Plant Pathogenic Bacteria....Pages 18-25 Analysis of the Locus Involved in Plasmid Partitioning for the Native Agrobacterium Plasmid pTAR....Pages 26-33 Role of Agrobacterium Rhizogenes Hormone Genes in the Induction of Hairy Root....Pages 34-41 Genetics and Molecular Biology of Agrocin Production and Sensitivity in Agrobacterium ....Pages 42-55 Ultrastructural Surveillance of the Infection Process of Agrobacterium Tumefaciens , Biovar Three in Grape....Pages 56-67 Attachment of Agrobacterium Tumefaciens to Host Cells....Pages 68-75 Transfer of the T-DNA from Agrobacterium Tumefaciens to Plant Cells....Pages 76-76 Structure and Properties of Border Sequences in T-DNA Transformation....Pages 77-78 Serological Study of Agrobacterium Biotypes....Pages 79-86 Rapid Detection of Agrobacterium Tumefaciens in Grapevine Propagating Material....Pages 87-90 Control of Crown Gall in Swiss Apple Nurseries....Pages 91-95 Biological Control of Crown Gall with an Agrocin 84-Producing Biotype 1 Transconjugant of Agrobacterium ....Pages 96-100 A Proposed Basis for Varietal Differences in Sensitivity of Grapes to Crown Gall Disease....Pages 101-102 Host Range, Virulence, and Genetic Variability of Agrobacterium Tumefaciens Strains from New York Vineyards....Pages 103-104 The Role of Membrane Atpase in Proline and Valine Transport by Agrobacterium Tumefaciens ....Pages 105-105 Cloning and Nucleotide Sequence of TZS a Cytokinin Biosynthetic Locus, from Agrobacterium Tumefaciens Strain T37....Pages 106-106 Factors Affecting the Biocontrol of Agrobacterium Tumefaciens by K-84....Pages 107-107 Biological Control of Crown Gall by Bacteriocin-Producing Bacteria....Pages 108-108 Pathogenesis by Pectolytic Erwinias....Pages 109-120 Serology and Epidemiology of Erwinia Carotovora ....Pages 121-128 Changes in Populations of Erwinia Carotovora in Relation to the Development of Soft Rot in Wounded Potato Tissue....Pages 129-136 Molecular Cloning and Mutagenesis in Escherichia Coli of Pectinase Genes from Erwinia Chrysanthemi ....Pages 137-149 Erwinia Cellulases....Pages 150-159 Possible Involvement of Outer Membrane Components in Erwinia Chrysanthemi Pathogenicity....Pages 160-171 Importance of Ketodeoxyuronate Pathway in the Degradation of Pectin in Erwinia Chrysanthemi ....Pages 172-180 Assimilation: Ketouronate Pathway....Pages 181-181 Assimilation in Soft Rot Erwinias: Cellobiose Pathway....Pages 182-188 Genetic Systems in the Soft Rot Erwinia Group....Pages 189-197 Development of a Chromosomal Map in Soft Rot Erwiniae....Pages 198-205 Production of Cell Wall-Degrading Enzymes by Corn Stalk Rot Strains of Erwinia Chrysanthemi ....Pages 206-211 Isolation and Characterization of Pectolytic Nonpathogenic Mutants of Erwinia Carotovora Subsp. Carotovora ( Ecc )....Pages 212-217 Marker—Exchange Mutagenesis of the pe1B Gene in Erwinia Chrysanthemi CUCPB 1237....Pages 218-223 Influence of Alcaline Salts on Growth and Pectate Degradation of Species and Subspecies of the Erwinia Carotovora Group....Pages 224-236 In Vitro Production of Extracellular Polysaccharides by Erwinia Carotovora Var. Carotovora and Erwinia Carotovora Var. Atroseptica ....Pages 237-243 The Application of Transposons to the Cloning of Genes from Erwinia Carotovora ....Pages 244-248 Molecular Cloning of Two Erwinia Carotovora Subsp. Carotovora DNA Fragments which Mediate the Production of Similar Pectate Lyases....Pages 249-249 Comparisons between Pectic Enzyme Genes from Erwinia Carotovora Subsp. Carotovora and E . Carotovora Subsp. Atroseptica ....Pages 250-250 Markers on a Large, Self-Transmissible Plasmid in Erwinia Carotovora Subsp. Carotovora Strain 379....Pages 251-251 Molecular Evidence for Linkage between the Genes for a Polygalacturonase ( peh ) and a Pectate Lyase ( pel ) in Erwinia Carotovora Subsp. Carotovora ....Pages 252-252 Cloning and Characterization of a Gene for Extracellular Protease of Erwinia Carotovora Subsp. Carotovora ....Pages 253-253 recA -Mediated Induction of Pectin Lyase and Carotovoricin in Erwinia Carotovora Subsp. Carotovora ....Pages 254-254 Genetics of the Damage Inducible Phenotypes of Erwinia Carotovora Subsp. Carotovora : Characterization of Tn 5 Insertional Mutants Defective in Pectin Lyase and Carotovoricin....Pages 255-255 Chemotaxes of Erwinia Carotovora Subsp. Carotovora and Erwinia Chrysanthemi ....Pages 256-256 PEL-C is the Major Pectate Lyase Produced by Erwinia Chrysanthemi (EC16) in Vitro and in Plant Tissue....Pages 257-257 Biochemical Properties of Three Extracellular Pectate Lyases of Erwinia Chrysanthemi EC16....Pages 258-258 Regulatory Mutants Affecting the Synthesis of Pectate Lyase of Erwinia Chrysanthemi ....Pages 259-259 Comparison of the Isoelectric Focusing Profiles of Pectic Enzymes Produced by Erwinia Chrysanthemi , E . Carotovora Subsp. Carotovora and E . Carotovora Subsp. Atroseptica ....Pages 260-260 Investigation of the Relatedness of Erwinia Chrysanthemi Pectate Lyase Isozymes by Genetic and Protein Analysis....Pages 261-261 Approaches in the Diagnosis of Soft Rot Diseases of the Potato....Pages 262-266 Soft Rot Erwinias: What is Pathogenicity?....Pages 267-267 Factors Affecting Blackleg Development....Pages 268-268 A Rapid Method to Identify Soft Rot Erwinias Directly from Plant Material....Pages 269-269 Antibiotic Production by Erwinia Carotovora Subsp. Betavasculorum : Partial ‘in Vitro’ Characterization and Evidence for Activity in Potato Tubers....Pages 270-271 Control of Bacterial Soft Rot in Potato Tubers with Hypochlorite and Certain Organic Acids....Pages 272-272 The Diversity of the Pectolytic Fluorescent Pseudomonads....Pages 273-276 Characteristics of Strains of Pseudomonas Fluorescens Isolated from Soil in Relation to Ability to Macerate Plant Tissue....Pages 277-282 Pectolytic Bacteria Associated with Post-Harvest Decays of Fruits and Vegetables with Special Reference to Fluorescent Pseudomonads....Pages 283-288 Pseudomonas Marginalis , an Interesting Organism for Further Research....Pages 289-290 The Nonrandom Variation in the Distribution of Phenotypic Properties within a DNA Homology Matrix of Fluorescent Pseudomonads....Pages 291-297 Pectolytic Fluorescent Pseudomonads Associated with Alfalfa Root and Crown Rot....Pages 298-298 Taxonomy of the Fluorescent Pectolytic Pseudomonads....Pages 299-300 Serology of Mycoplasma-Like Organisms....Pages 301-305 Detection of Corn Stunt Spiroplasma in Plants by Elisa Employing Monoclonal Antibodies and by Isolation of the Pathogen and its Phages in Serum-Free Medium....Pages 306-312 Vector Relationships of Xylem- and Phloem-Limited Fastidious Prokaryotes....Pages 313-320 Biology and Physiology of Fastidious Xylem-Limited Bacteria from Plants....Pages 321-326 Etiology of Ratoon Stunting Disease and Host Resistance....Pages 327-333 Detection and Control of Plant Diseases Caused by Fastidious Prokaryotes....Pages 334-339 Development of Monoclonal Antibodies to Spiroplasmas Utilizing a Mixture of Spiroplasma Citri and Corn Stunt Spiroplasmas....Pages 340-346 Differentiation of Strains of Spiroplasma Citri with Monoclonal Antibodies....Pages 347-351 Monoclonal Antibodies for Differentiating Some Strains of the Fastidious Gram-Negative Bacteria from Plants....Pages 352-356 Serological Relationship Between the Xylem-Limited Bacterium Causing Sumatra Disease of Cloves in Indonesia and Pseudomonas Solanacearum ....Pages 357-363 Strains of Corn Stunt Spiroplasma Defective in Helicity and Motility....Pages 364-369 Preliminary Results on Transmission of Xylem-Limited Bacteria Causing Sumatra Disease of Cloves in Indonesia by Tube-Building Cercopoids, Hindola Spp. (Homoptera: Machaerotidae)....Pages 370-374 Purification of Mycoplasma-Like Organisms from Lettuce Affected with Aster Yellows Agent....Pages 375-375 The Genetic Basis for Virulence, Pathogenicity and Host Range in Agrobacterium Tumefaciens ....Pages 377-387 Genetics of Plant Pathogenic Coryneform Bacteria....Pages 388-393 Pathogenicity Genes of Xanthomonas Campestris ....Pages 394-403 Molecular Analysis of Pathogenicity of Pseudomonas Syringae Pathovars Phaseolicola and Syringae ....Pages 404-411 Genetics of Virulence in the Wilt Pathogen, Pseudomonas Solanacearum ....Pages 412-412 Complementation of Avirulent Mutants of Erwinia Stewartii by Recombinant Plasmids....Pages 413-418 Characterization of a Gene Cluster for Polysaccharide Biosynthesis in Erwinia Stewartii ....Pages 419-424 Cloning of a Gene from Erwinia Amylovora Involved in Induction of Hypersensitivity and Pathogenicity....Pages 425-429 Phage Mu as a Genetic Tool to Study the Pathogenicity of Erwinia Amylovora ....Pages 430-433 Use of Plasmid Vector pGS9 to Introduce Transposon Tn 5 into Pathovars of Pseudomonas Syringae ....Pages 434-438 Transformation of Pseudomonas Solanacearum with Plasmid DNA....Pages 439-443 Isolation and Characterization of Tn 5 Mutants of Pseudomonas Syringae Pv. Phaseolicola which Fail to Elicit a Hypersensitive Response....Pages 444-447 Cosmid Instability in Pseudomonas Syringae Pathovars: Evidence for Directed Excision of a Cloned Sequence....Pages 448-452 Integration of pMMC7105 into the Chromosome of Pseudomonas Syringae pv. Phaseolicola Involves the Repetitive Sequence RSII....Pages 453-457 Transfection of Spiroplasma Citri with DNA of a New Rod-Shaped Spiroplasmavirus....Pages 458-464 Indigenous Plasmids in Xanthomonas Campestris Pv. Pruni....Pages 465-469 New Stable High- and Low-Copy Cloning Vectors for use in Agrobacterium and Rhizobium ....Pages 470-470 A Shuttle-Vector for Transferring Cloned DNA between E . Coli CO1E1 Replicons and Agrobacterium Virulence Plasmids....Pages 471-471 Pathogenicity Mutants of Erwinia Amylovora Caused by Tn 5 Insertion....Pages 472-472 Transposon Tn 5 Mutagenesis of Pseudomonas Syringae Pv. Tomato ....Pages 473-473 The use of a λgt11 Expression Vector and of Protein Sequence Derived DNA Oligomers to Clone Genes for Pilus Synthesis in Pseudomonas Solanacearum ....Pages 474-474 Cloning of Genes Associated with Pathogenicity and Hypersensitivity from Pseudomonas Syringae Pv. Phaseolicola ....Pages 475-475 Molecular Analysis of Pathogenicity Specific Genes in Pseudomonas Syringae Pv. Syringae ....Pages 476-476 Cloning Regulation and Expression of Yellow Pigment Genes from Erwinia Herbicola ....Pages 477-477 Cloning and Expression of a Serratia Marcescens Gene Encoding Chitinase....Pages 478-478 Detection and Initial Characterization of Plasmids in Xanthomonas Campestris Pv. Glycines ....Pages 479-479 Current Status on Mode of Action Studies with Tagetitoxin....Pages 481-483 Cloning of Genes Encoding Phaseolotoxin....Pages 484-486 Molecular Genetics of Phaseolotoxin Production and Immunity in Pseudomonas Syringae Pv. Phaseolicola ....Pages 487-497 Molecular Genetics of Coronatine Production by Pseudomonas Syringae Pv. Glycinea ....Pages 498-508 2,5-Dihydrophenylalanine (DHP) from an Axenic Culture of Erwinia Amylovora : Possible Cause of Fireblight Necrosis....Pages 509-519 Toxigenic Bacteria: Their Ecology and Biocontrol Prospects....Pages 520-521 Characterization of Slimes Produced by Pseudomonas Phaseolicola in Vitro and in Planta , and the Demonstration of the Slime Polysaccharide Alginate in Seven Pseudomonas Syringae Pathovars....Pages 523-529 Leaf Necrosis Instead of Water-Soaking Due to Light Deficiency after Inoculation with Pseudomonads and Xanthomonads....Pages 530-536 Contribution of Sugar Bacterial Components in HR of Tobacco....Pages 537-544 Indications of a Role for Amylovorin as a Virulence Factor of Erwinia Amylovora ....Pages 545-550 Factors Affecting Production of Herbicolacin 112Y by Erwinia Herbicola 112Y....Pages 551-555 Multiplication of Wild Types of Pseudomonas Syringae Pv Savastanoi (Smith) Young Et Al. and their Indoleacetic Acid-Deficient Mutants in Olive Tissues....Pages 556-565 On the Presence and Level of Different Cytokinins in Culture Filtrate of Pseudomonas Syringae Pv. Savastanoi ....Pages 566-570 Activation of a Plasmalemma K + Efflux/H + Influx Mechanism in Tobacco by Incompatible Bacteria or Pectate Lyase....Pages 571-571 Chromosomally Coded Pili of Pseudomonas Syringae Pv. Phaseolicola Function as Adhesins in Early Steps of Halo Blight of Bean....Pages 572-577 Properties of Yellow (Orange)-Pigmented Strains of Soft Rot Bacteria in the Genus Xanthomonas , Pseudomonas , Cytophaga , and Erwinia ....Pages 578-583 Phage-Induced Mutations of Histidine and Cysteine Syntheses in Xanthomonas Campestris Pv. Citri ....Pages 584-593 Ethylene Production by the Kudzu Strains of Pseudomonas Syringae Pv. Phaseolicola ....Pages 594-594 Function of Zinc in Toxin Production by Pseudomonas Syringae Pv. Tabaci ....Pages 595-595 Alginic Acid as an Exopolysaccharide of Plant Pathogenic Pseudomonads....Pages 596-596 Effects of Extracellular Polysaccharides on Bacterial Multiplication ‘In Planta’....Pages 597-598 Involvement of Lipid Peroxidation in Bacterially Induced Hypersensitive Reaction....Pages 599-599 Cell Membrane Potential in Tissues Undergoing Bacterial Hypersensitivity....Pages 600-600 Phytoalexin Accumulation in Congenic Cotton Lines Challenged with Different Races of Xanthomonas Campestris Pv. Malvacearum ....Pages 601-601 In Vitro Interaction of Copper and Magnesium on Copper-Sensitive and Copper-Resistant Strains of Xanthomonas Campestris Pv. Vesicatoria ....Pages 602-602 Properties of Clavibacter Michiganense Ssp. Nebraskense , C . M . ssp. Tessellarius and C . M . ssp. Michiganense Harboring pDG101....Pages 603-603 Cytological Observations of Leaf Spot-Causing Bacteria in Susceptible and Resistant Hosts....Pages 604-612 Hydraulic Conductivity in Sugarcane Clones as Related to Resistance to Ratoon Stunting Disease....Pages 613-616 Avirulent Mutants of Erwinia Amylovora ; Relationship between Phage Sensitivity and Biological Properties....Pages 617-622 Susceptibility to Erwinia Amylovora of Flower Buds of Pear Trees, Under Natural Conditions....Pages 623-627 Preservation of Phytopathogenic Bacteria by Soft Agar Stab Method....Pages 628-633 Effect of Erwinia Herbicola on the Motility and Chemotaxis of Erwinia Amylovora ....Pages 634-634 Electron Microscopy of Lesion Development on Wound-Inoculated Leaves of Citrus Aurantiofolia Infected with Florida and Mexican Isolates of Xanthomonas Campestris Pv. Citri ....Pages 635-635 Active Resistance of Cabbage to Xanthomona Campestris Pv. Carotae and Protection Against the Causal Agent of Black Rot, Pv. Campestris , by Co-Inoculation....Pages 636-636 Differential Effects of LiCl on Growth of Clavibacter Michiganense ssp. Nebraskense Recovered from Infected Corn Plants and Broth Culturers....Pages 637-637 Bacterial Pustule Disease of Soybean: Electron Microscopy of Pustule Development in a Susceptible Cultivar....Pages 638-638 Interaction between Genotypes of Xanthomonas Campestris Pv. Malvacearum and Gossypium Hirsutum ....Pages 639-639 The Occurrence of Phytopathogenic Pseudomonas Marginalis in a Latent Stage on the Phylloplane of Healthy Witloof Chicory ( Cichorium Intybus L. Var Foliosum Hegi.)....Pages 640-644 Plant Pathogenic Bacteria Identified in Spain....Pages 645-652 Plant Diseases Caused by Bacteria in United Arab Emirates....Pages 653-657 Xanthomonas Campestris Involved in Mexican Lime Bacteriosis in Colima, Mexico....Pages 658-662 Avocado Bacterial Blast in Mexico....Pages 663-667 Pepper Spot of Crucifers in California....Pages 668-671 Pathogenesis, Migration and Population Dynamics of Erwinia Amylovora in Susceptible (Jonathan) and Resistant (Red Delicious) Apple Shoots....Pages 672-679 Isolation and Identification of Xanthotoxin and Bergapten from Celery Infected with Erwinia Carotovora pv. Carotovora ....Pages 680-685 Changes in the Phenol Metabolism of Ornamental Shrubs ( Cotoneaster Species) Infected with Erwinia Amylovora ....Pages 686-694 Disease Expression in the Leaves of Two Tomato Cvs. Due to Infection of Xanthomonas Campestris Pv. Vesicatoria (Doidge) Dye....Pages 695-705 Certain Cell Level Changes and Chromosomal Aberrations in Tomato Seedlings Induced by Xanthomonas Campestris Pv. Vesicatoria ....Pages 706-714 Symptoms of Pseudomonas Syringae Pv. Tagetis Infection in Sunflower....Pages 715-716 Invasion of the Epidermis and Cortex of Apple Roots by Actinomycetes....Pages 717-721 The Induction of Active Resistance in Cabbage to Black Rot ( Xanthomonas Campestris Pv. Campestris ) by Inoculation with Xanthomonas Campestris Pv. Carotae ....Pages 722-732 Isolation of Soil Bacteria with Inhibitory Activity to Pseudomonas Solanacearum ....Pages 733-739 Survival of Xanthomonas Campestris Pv. Malvacearum and Performance of Seedlings from Commercially Ginned Cottonseed as Influenced by Length of Storage....Pages 740-745 Utility of an Eclectic Approach for Obtaining Plant Growth-Promoting Rhizobacteria from New York State Apple Replant Soils....Pages 746-751 Dispersal of Potato-Ringrot ( Corynebacterium Sepedonicum ) in the Field....Pages 752-755 Transfer of RP4 Plasmid on Leaf Surface of Hazelnut....Pages 756-762 Ecology and Survival of Plant Pathogenic Bacteria in the Semi-Arid Zones of Nigeria....Pages 763-763 Bacterial Blight of Anthurium in Venezuela....Pages 764-764 Occurrence of Bacterial Wilt of Casuarina Equisitifolia in Kerala, India....Pages 765-765 Etiology of the Head Rot Disease of Broccoli....Pages 766-766 Opportunistic Xanthomonads in Mixed Infections with Pseudomonas Syringae in Tomato and Pepper....Pages 767-767 Recovery of Xanthomonas Campestris Pv. Vesicatoria from Tomato Seed....Pages 768-768 Incidence of Biovars I and II of Pseudomonas Solanacearum in Two Ecological Zones of Peru....Pages 769-769 Association of Erwinia Spp. with the Rhizosphere of Crops and Weeds in the Peruvian Jungle....Pages 770-770 Pectolytic Xanthomonas Isolates Causing Soft-Rot of Vegetables in Storage: Isolation, Characterization and Pathology....Pages 771-771 An Inhibitor of Escherichia Coli B Produced by a Sorghum Isolate of Pseudomonas Andropogonis ....Pages 772-772 A Comparison of Four Methods of Inoculation Potato Tubers with the Ring Rot Bacterium, Corynebacterium Sepedonicum ....Pages 773-773 Characterization of Phytopathogenic Pseudomonads: An Approach to Minimal Standards for Description....Pages 775-782 Problems with the Pathovar Concept....Pages 783-785 Practical Problems with the Pathovar Scheme in Plant Quarantine....Pages 786-794 The Taxonomy of Xanthomonas Dowson 1939....Pages 795-796 Analysis of Strain Variation in Xanthomonas Campestris Pv. Phaseoli ....Pages 797-797 Detecting Seedborne Bacteria by Immunofluorescence....Pages 799-808 DNA Hybridization Probes for the Identification of Phytobacteria....Pages 809-817 Use of Selective Agar Media in Diagnosis of Plant Diseases Caused by Bacteria....Pages 818-820 Determination of Fatty Acid Profiles Relevant to the Characterization of Erwinia Amylovora ....Pages 821-829 Taxonomic Studies on Erwinia Amylovora Isolates and their Sensitivity to Antibiotics....Pages 830-834 Principles and Prospects of New Serological Techniques Including Immunosorbent Immunofluorescence, Immunoaffinity Isolation and Immunosorbent Enrichment for Sensitive Detection of Phytopathogenic Bacteria....Pages 835-842 Serological Differentiation of Strains of Erwinia Ananas with Hybridoma Antibodies....Pages 843-846 Mexican Lime Bacteriosis Examined with Monoclonal Antibodies....Pages 847-852 Enzyme-Linked Immunosorbent Assays (Standard Elisa and Biotin/Avidin Elisa) for the Detection of Erwinia Chrysanthemi in Dahlia Stem....Pages 853-861 Capability of Phytopathogenic Bacteria to Secrete Wall Degrading Enzymes--A Criterion for Their Identification....Pages 862-875 The Use of Elisa for the Detection of Pseudomonas Syringae Pv. Phaseolicola and Xanthomonas Campestris Pv. Phaseoli in Bean Seed....Pages 876-876 The Search for a Specific Antigen on Erwinia Amylovora ....Pages 877-877 Development of Elisa for Detection of Clavibacter Xyli Susp. Xyli , The Causal Agent of Ratoon Stunting Disease in Sugarcane....Pages 878-878 Dot-Immunobinding Assay for Detection of Xanthomonas Campestris Pv. Holcicola in Sorghum....Pages 879-879 Problems with the Detection of Latent Potato Ring Rot Infection....Pages 880-881 Selective Isolation and Concentration of Phytopathogenic Bacteria on Immunoaffinity Columns....Pages 882-882 A Simplified Technique for the Isolation of Clavibacter Xyli Susp. Xyli ....Pages 883-883 Prospects for Detecting and Controlling Potato Ring Rot in Norway....Pages 884-884 Crown Gall of Grapevine: Disease Management Considerations....Pages 885-890 Prospects for the Integrated Control of Bacterial Wilt ( Pseudomonas Solanacearum )....Pages 891-899 Management of Citrus Canker by Eradication of Xanthomonas Campestris pv. Citri ....Pages 900-905 Specific Detection of Corynebacterium Sepedonicum in Potato with Monoclonal Antibodies as an Aid in Bacterial Ring Rot Control....Pages 906-913 Development of a Risk-Assessment System for Fire Blight....Pages 914-916 Assessment of Fire Blight Risk Assessment Systems....Pages 917-921 Role of Amino Acids in Biological Control of Erwinia Amylovora by Erwinia Herbicola ....Pages 922-923 Integrated Control of Pseudomonas Solanacearum in Chile....Pages 924-929 Resistance of Chilean Potato Clones to Bacterial Wilt....Pages 930-934 The Antagonistic Effects of Fluorescent Pseudomonas Spp. on Plant Growth and the Control of Softrot and Blackleg of Potato....Pages 935-943 Managing Pseudomonas Tolaasii , Bacterial Blotch of Agaricus Spp., by Integrated Biological and Chemical Practices....Pages 944-949 Effect of Nitrogen and Plant Spacing on Bacterial Leaf Blight of Rice....Pages 950-954 Chemical Control of Bacterial Leaf Blight of Paddy Caused by Xanthomonas Campestris Pv. Oryzae ....Pages 955-958 Effect of Sodium Hypochlorite on Lime Fruit Surface Microflora and Suspensions of Xanthomonas Campestris Pv. Citri , as Related to Citrus Bacteriosis in Colima, Mexico....Pages 959-963 The Efficiency and Economics of Some Disinfestants Challenged in Vitro by Clavibacter Michiganense Subsp. Michiganense ....Pages 964-972 Evaluation of an In-Field Microcomputer and a Weather-Based Model for Assessing Fire Blight Risk in Bloom....Pages 973-973 Tolerance Levels of Seedborne Xanthomonas Campestris Pv. Translucens , the Causal Agent of Black Chaff of Wheat....Pages 974-975 Comparative Study of the Efficacy of Busan 30, Busan 72, and Bronocot for the Control of Bacterial Blight of Cotton in Northern Nigeria....Pages 976-981 Detection of X-Disease Mycoplasma-Like Organisms in Plant and Insect Hosts Using Cloned, Disease Specific DNA....Pages 982-982 Bacterial Populations in Buds and Probability of Frost Injury on Grapevine....Pages 983-993 Ice-Nucleation-Active Bacteria on Citrus in Florida....Pages 994-1004 Characteristics Relevant to the Question of Environmental Fate of Genetically Engineered INA - Deletion Mutant Strains of Pseudomonas ....Pages 1005-1012 Functional Significance of Oligonucleotide Repeats in a Bacterial Ice Nucleation Gene....Pages 1013-1017 Application of Tube-Nucleation Assays to Rapid Population Estimates of Rhizobacteria Expressing Novel Ice-Nucleation Activity....Pages 1018-1024 Ice-Nucleation Activity of Pseudomonas Syringae on Phaseolus Vulgaris Leaflets....Pages 1025-1026 Host Avoidance of Ice Nucleation Active Pseudomonas Syringae on Bean....Pages 1027-1027 Enhancement of Snow Production by Ice Nucleation-Active Bacteria in Air:Water Systems....Pages 1028-1028 Reciprocal Competition between INA + Wild-Type and INA - Deletion Mutant Strains of Pseudomonas on Strawberry Blossoms....Pages 1029-1029 Molecular Analysis of the Pseudomonas Syringae Pv. Syringae ice Gene and Construction and Testing of Ice - Deletion Mutants for Biological Frost Control....Pages 1030-1030 A Hypothetical Bioprecipitation Cycle Involving Ice-Nucleating and Dew-Condensing Bacteria, Plants and Rainfall....Pages 1031-1031 Applications and Techniques for Deficiency-Marker Exchange in Pseudomonas ....Pages 1033-1039 Molecular Analysis of Race-Specific Incompatibility (RSI) Genes of Pseudomonas Syringae Pv. Glycinea Race 0....Pages 1040-1040 Application of Novel Ice-Nucleation Activity to a Rapid Assay of Rhizobacteria Population Densities by “Tube-Freezing”....Pages 1041-1041 Plasmid-Specified Host Specificity in Xanthomonas Campestris Pv. Vesicatoria ....Pages 1042-1050