Pathogenesis by Pseudomonas Syringae Pv. Tabaci PDF Download
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Author: Kimberly K. Knoche
Publisher:
ISBN:
Category :
Languages : en
Pages : 586
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Author: Kimberly K. Knoche
Publisher:
ISBN:
Category :
Languages : en
Pages : 586
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Author: Yangkyo Park Salch
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
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Author: K. Rudolph
Publisher: Springer Science & Business Media
ISBN: 9401154724
Category : Science
Languages : en
Pages : 687
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During the last decade, research on Pseudomonas syringae pathovars and related pathogens has progressed rapidly, opening up many new avenues. The application of molecular genetics has provided new insights into determinants of pathogenicity and virulence. Progress has also been made in elucidating the chemical structures and modes of action of phytotoxins from Pseudomonas syringae; by establishing novel strategies for disease control; in biotechnological applications; by studying the resistant reaction of the plant with a combined biochemical and genetic approach; and in the development of new detection and identification methodologies as tools in epidemiological studies. With such rapid advances it becomes more and more difficult to keep abreast of the developments and concepts within disciplines, all involving research on pathovars of P. syringae. In an attempt to provide a balanced overview, recent developments in these rapidly expanding fields have been critically reviewed at the beginning of each chapter by internationally renowned experts. Our comprehensive coverage has been made possible because all the contributors to this volume presented their latest findings at the `5th International Conference on Pseudomonas syringae Pathovars and Related Pathogens' in Berlin, September 3-8, 1995. In this way, it was possible to bring together contributions from a wide range of fields including phytopathology, genetics, bacteriology, plant breeding, plant protection, and taxonomy. This book is not intended simply as a record of the proceedings of the Berlin Conference, but as an extension of recent findings and hypotheses put forward at the meeting. All papers published in this volume have been reviewed by the Editors.
Author: Robert Sotak
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
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Author: Antonio Graniti
Publisher: Springer Science & Business Media
ISBN: 3642731783
Category : Technology & Engineering
Languages : en
Pages : 491
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Proceedings of the NATO Advanced Research Workshop on Phytotoxins and Plant Pathogenesis held at Capri, Italy, May 30 - June 3, 1988
Author: Nicola Sante Iacobellis
Publisher: Springer Science & Business Media
ISBN: 9781402012273
Category : Science
Languages : en
Pages : 734
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This volume mainly reports on new and recent advancements on different aspects of Pseudomonas syringae, a plant pathogenic bacterial species that include a high number of pathogens of important crops, which is an interesting model organism in plant pathology. In addition some related fluorescent Pseudomonas spp., responsible of new and emerging diseases, as well as some pathogens previously included in the above genus and now classified in the genera Ralstonia, Acidovorax are also considered. The tremendous recent advancements on: the ecology and epidemiology and, in particular, the adaptation of P. syringae to stresses and adverse environmental conditions; the function and regulation of genes involved in the production of phytotoxins and on their mechanism of action in the interaction with the host cells; the structure, function and regulation of type three secretion system (TTSS) and the transport of the effectors proteins in the host cells; the possibility to control diseases through the induction of the systemic acquired resistance (SAR); the development of molecular techniques for the highly specific and sensible identification and detection of pathogens; the determination of the causal agents of new and emerging diseases as well the classification of the different pathovars of P. syringae; are reported in 76 chapters cured by leading scientist in the respective fields.
Author: Wen-Ling Deng
Publisher:
ISBN:
Category :
Languages : en
Pages : 434
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Author: Karen Engst
Publisher:
ISBN:
Category :
Languages : en
Pages : 226
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Pseudomonas syringae pv. tabaci strain PTBR2.024 produces tabtoxin and causes wildfire disease on tobacco and green bean. PTBR7.000, a Tn5 mutant of PTBR2.024, does not produce tabtoxin, is nonpathogenic on tobacco and is prototrophic. A 3-kb fragment from a genomic library of the parent strain PTBR2.024 complemented both mutant phenotypes. This 3-kb fragment contains two open reading frames (ORF), ORF1 and ORF2, and two truncated ORFs, ORF3 and ORF4. The Tn5 insert in PTBR7.000 was mapped to ORF2, and complementation studies showed that an intact ORF2 was sufficient to restore tabtoxin production and pathogenicity. The deduced amino acid sequences of ORF2 and truncated ORF3 contain significant homology to bacterial lysine biosynthetic enzymes, diaminopimelate decarboxylase and $Deltasp1$-piperidine-2,6-dicarboxylate succinyl transferase, respectively. ORF2, however, is not required for lysine biosynthesis. We designated the sequence corresponding to ORF2 as gene tabA and propose that the product of tabA is an enzyme in the tabtoxin biosynthetic pathway that recognizes a substrate analogue of a compound in the lysine biosynthetic pathway. Another Tn5 insertion mutant of PTBR2.024, PTBR6.000, produces tabtoxin but is not pathogenic on tobacco. An 11-kb EcoRI genomic DNA fragment from PTBR2.024 restored pathogenicity to the Pat$sp-$ mutant PTBR6.000. A diffusible toxin restoration factor, TRF, produced by tabtoxin-producing strains restored toxin production to three independent mutants of Pseudomonas syringae pv. tabaci that are defective in tabtoxin production (Tox$sp-$). Glutamine overcomes the inhibition produced by both PTBR2.024 and the Tox$sp-$ mutants suggesting that the toxin produced by the Tox$sp-$ mutants, in the presence of TRF, was tabtoxin. Genetic studies suggested that TRF is an intermediate in tabtoxin biosynthesis. Preliminary evidence indicates that TRF is a low molecular weight anionic compound that is heat labile.
Author: Robert N. Goodman
Publisher: American Phytopathological Society
ISBN:
Category : Medical
Languages : en
Pages : 266
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Nikolai Gogol’s short story is a sublime work of tragi-comedy. In it, he brilliantly ridicules the Ukrainian passion for litigation and reveals life as something really rather absurd. Ivan Ivanovich and Ivan Nikiforovich are the greatest of friends—until the day they begin a foolish quarrel that culminates in that very worst of insults: “And you, Ivan Ivanovich, are a goose.” From that moment on, not another word is spoken between them as they choose instead to fight out their differences in the courts. But it seems theirs is a lawsuit that is set to run for years and years.
Author: Poulami Basu Thakur
Publisher:
ISBN:
Category :
Languages : en
Pages :
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