Download or read book Pseudomonas Syringae Type III Secretion System and Effectors written by Zhengqing Fu and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identification and Secretion of Effectors from the Pseudomonas Syringae Type III Secretion System written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hypersensitive Reaction in Plants to Pathogens written by Robert N. Goodman and published by American Phytopathological Society. This book was released on 1994 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Pseudomonas Syringae Type III Secretion System written by Emerson Crabill and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effectors in Plant Microbe Interactions written by Francis Martin and published by John Wiley & Sons. This book was released on 2012-01-03 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plants and microbes interact in a complex relationship that can have both harmful and beneficial impacts on both plant and microbial communities. Effectors, secreted microbial molecules that alter plant processes and facilitate colonization, are central to understanding the complicated interplay between plants and microbes. Effectors in Plant-Microbe Interactions unlocks the molecular basis of this important class of microbial molecules and describes their diverse and complex interactions with host plants. Effectors in Plant Microbe Interactions is divided into five sections that take stock of the current knowledge on effectors of plant-associated organisms. Coverage ranges from the impact of bacterial, fungal and oomycete effectors on plant immunity and high-throughput genomic analysis of effectors to the function and trafficking of these microbial molecules. The final section looks at effectors secreted by other eukaryotic microbes that are the focus of current and future research efforts. Written by leading international experts in plant-microbe interactions, Effectors in Plant Microbe Interactions, will be an essential volume for plant biologists, microbiologists, pathologists, and geneticists.
Download or read book Phytopathogenic Prokaryotes written by Mark S. Mount and published by . This book was released on 1982 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: V.1 - Phytopathogenic prokaryotes; Concepts for plant interactions with prokaryotes; Prokaryote interactions on plant surfaces; Prokaryote interactions within the plant; v.2 - Epidemiology and dispersal; Host coevolution with the pathogen; Pathogen coevolution with the host; Strategies for control; Cultivation and preservation.
Download or read book Pseudomonas Syringae Type III Secretion System written by Fang Tian and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulation of Type III Secretion System in Pseudomonas Syringae written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: P. syringae is a group of bacterial phytopathogens that can infect a wide variety of plants. These bacteria rely on the type III secretion system (TTSS) to deliver effectors into plant cells for infection. The TTSS genes, that encode the TTSS apparatus and the effectors, are repressed when bacteria grow in nutrient rich media but are strongly induced in the plants and in minimal medium (MM). Plant cutin monomers appear to negatively regulate the P. syringae TTSS genes. It is poorly understood how bacteria sense the environmental signals to regulate the TTSS genes. By genetic screen, four sets of transposon insertion mutants displaying aberrant TTSS gene expression were isolated: KB and fin mutants derepress the TTSS genes in rich medium KB and in the presence of a cutin monomer precursor in MM, respectively; min and pin mutants are defective in induction of TTSS genes in MM and in plants, respectively. A putative two-component sensor histidine kinase, RohS, is identified to be required for the induction of avrPto-LUC in MM and in plants. The rohS gene is in an operon containing a two-component response regulator gene rohR. Mutation of rohS in P. s. phaseolicola and P. s. tomato reduced the bacterial pathogenicity on hosts and HR-inducing activity on non-hosts. Our results suggested that RohS acts upstream of HrpR/HrpS. The phosphorylated RohR represses TTSS genes. It is likely that RohS acts as phosphatase of RohR in the TTSS-inducing conditions, and subsequently derepresses TTSS genes. Simple sugars such as glucose, sucrose and fructose are known to be inducers of the TTSS genes. Isolation of four min mutants defective in fructose-uptake enabled us to study if sugars serve as extracellular signals or as essential nutrients. Our results suggest that fructose acts as an essential nutrient for the activation of type III genes. These mutants slightly compromised induction of avrPto promoter in Arabidopsis and pathogenicity on the host bean plant, but displayed normal HR elicitation on non-host plant tobacco. The reduced pathogenicity suggested that exploitation of fructose from the host tissue is an important means for pathogenesis of P. s. phaseolicola.
Download or read book Pseudomonas syringae and related pathogens written by Nicola Sante Iacobellis and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Regulation of the Hrp Type III Secretion System in Pseudomonas Syringae Pv Tomato DC3000 written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Type III Secretion System of Phytopathogenic Bacterium Pseudomonas Syringae written by Chun-Mei Li and published by . This book was released on 2007 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plant Associated Bacteria written by Samuel S. Gnanamanickam and published by Springer Science & Business Media. This book was released on 2007-09-29 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is envisioned as a resource for researchers working with beneficial and harmful groups of bacteria associated with crop plants. The book is divided into two parts, with Part I on beneficial bacteria including chapters on symbiotic nitrogen fixers and rhizosphere bacteria. The second part consists of detailed descriptions of 8 genera of plant pathogenic bacteria, including Agrobacterium and Herbaspirillum. Each chapter covers terminology, molecular phylogeny and more. soft-rot, Pseudomonas, Xanthomonas, Ralstonia, Burkholderia and Acidovorax There is an opening chapter on the plant-associated bacteria survey, molecular phylogeny, genomics and recent advances. And each chapter includes terminology/definitions, molecular phylogeny, methods that can be used (both traditional and latest molecular tools) and applications
Download or read book Analysis of the Flagellar and HRP Type III Secretion System in the Plant Bacterial Pathogen Pseudomonas Syringae Pv Tomato DC3000 written by Jennifer M. Hesson and published by . This book was released on 2008 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Type III Effector chaperone Pairs from the Pseudomonas Syringae Type III Protein Secretion System written by Zhengxiang Ge and published by . This book was released on 2007 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Effectors from the Type III Protein Secretion System of Pseudomonas Syringae Pv Tomato DC3000 written by Misty D. Janes Wehling and published by . This book was released on 2004 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identification of Extracellular Components and Early Regulation Steps in the Type III Secretion System of Pseudomonas Syringae written by Joanne Elena Morello and published by . This book was released on 2008 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The type III secretion system (T3SS) is a common and important mechanism of pathogenesis for many bacterial pathogens of plants and animals. T3SSs deliver bacterial proteins, called effectors, into the host cell where they suppress host defenses and allow bacterial proliferation and disease. The plant pathogen Pseudomonas syringae has a T3SS that is required for its ability to cause disease on many species of plants. Understanding the T3SS is therefore essential in our effort to understand pathogenesis. We are interested in how the T3SS has evolved for plant pathogenesis. Overall this work seeks to identify components of the T3SS that aid in delivery of effectors across plant barriers, and also to develop tools for studying the T3SS in planta. The T3SS is encoded by a cluster of genes called hrp/hrc genes. In this study we first phenotypically characterized hrp genes of unknown or only postulated function. Hrp proteins were screened for their ability to be substrates of the T3SS, and hrp mutants were tested for their ability to cause a hypersensitive response on non-host plants, translocate an effector into plants, and secrete an effector in vitro. One of these proteins, HrpP, was chosen for additional characterization. We show that HrpP is translocated into plant cells at levels equivalent to effectors and is essential for the function of the T3SS. We found that HrpP from different P. syringae pathovars can complement a hrpP mutant. We also analyzed the complementation ability of truncations of HrpP and an impassible HrpP-GFP fusion to determine the role of HrpP translocation for its function. HrpP was also found to be essential for secretion of all T3SS substrates examined, though a hrpP mutant does secrete reduced levels of the pilus subunit HrpA. Finally, a lux reporter assay was developed to assess hrp promoter activity in planta. We used this assay to test expression in response to PAMP-triggered immunity, in different hrp mutant backgrounds, and to compare in vitro and in planta responses. Due to this work we have a better understanding of P. syringae's T3SS and how it might operate in planta.
Download or read book Characterization of the Regulatory Network of the Type III Secretion System in Pseudomonas Syringae Pv Tomato DC3000 microform written by Amanda Zhenhua Liu and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2002 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
