Download or read book Characterization of Avirulence Genes from Pseudomonas Syringae Pv Tomato which Elicit the Hypersensitive Response in the Nonhost Soybean written by Donald Yoshimi Kobayashi and published by . This book was released on 1988 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization Function and Regulation of Avirulence Genes from Pseudomonas Syringae Pv Tomato written by Jennifer Mae Lorang and published by . This book was released on 1993 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulation and Function of Avirulence Genes in Pseudomonas Syringae Pv Tomato written by Hao Shen and published by . This book was released on 1992 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Analysis of Soybean for the Hypersensitive Response to a Specific Elicitor Produced by the Pathogen Pseudomonas Syringae written by Farhatullah and published by . This book was released on 1994 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Characterization of the Interactions Between Tomato and Pseudomonas Syrinagae Pv Tomato written by Jeffrey Herng Chang and published by . This book was released on 1999 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recognition and Response in Plant Virus Interactions written by Ronald S.S. Fraser and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanisms of resistance to plant viruses are diverse, and probably involve different types of recognition events. Often, a cascade of changes affecting broader aspects of defence and metabolism is switched on progressively after the initial recognition event. Virulence, i.e. resistence-breaking behaviour of the virus, involves a failure or alteration of recognition or subsequent signalling. Consequences of these recognition events are the ways in which the pathogenic effects on the host are exerted: formation of visible symptoms and control of plant growth. This volume offers a comprehensive coverage of the recognition and signalling events between plants and viruses whereby the particular attraction of viruses (and viroids) is that they can now be completely defined in molecular terms: they offer excellent opportunities for studying the molecular biology of signalling, and may even provide useful guidelines on how plants and cellular pathogens interact.
Download or read book Isolation and Structure Elucidation of Bioactive Secondary Metabolites from Microbial Sources written by Kate J. Graham and published by . This book was released on 1994 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial organisms often produce biologically active and chemically intriguing secondary metabolites. To isolate and characterize compounds of novel activity and structure, bioassay- guided fractionations were employed on a variety of natural products sources. Active compounds were characterized by spectroscopic analysis and X-ray diffraction methods. As a result of these studies, six projects were completed, resulting in the purification of a diverse range of compounds containing activity in a variety of assays. A coumarin and parahydroxyphenylethanol were determined to possess phytotoxic activity from fungal pathogens. Two novel C-glycosidic compounds from a bacterial plant pathogen were found to be the first low molecular weight elicitors of the hypersensitive response in plants. A verticillin of the epi-polythiodiketopiperazine class isolated from a soil fungus was discovered to be responsible for inhibition of ras farnesylation transferase. Leafcutter ants were found to be deterred by the presence of a novel sesqualterpenoid in epiphylls. Finally, inhibitors of the PDGF receptor were isolated and characterized from a lichen.
Download or read book Pseudomonas Syringae Pathovars and Related Pathogens written by K. Rudolph and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Molecular Mechanisms of Bacterial Virulence written by C.I. Kado and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing body of information on bacteria pathogenic for humans, mammals and plants generated within the past ten years has shown the interesting conservation of newly identified genes that playa direct role in the pathogenic mechanism. In addition to these genes, there are also genes that confer host specificities and other traits important in pathogenesis on these pathogens. In this volume, we have organized the subject areas to best fit the concept on the way bacterial pathogens recognize, interact and invade the host, on the regulation of genes involved in virulence, on the genes involved in the elaboration of toxins and other pathogenic components such as iron sequestering proteins, and on the mechanisms of circumventing the host defense systems. These areas are divided into Sections. Section I covers the first step when the pathogen seeks its host, and Sections II through VI cover subsequent steps leading to pathogenesis while avoiding host defenses. We conclude this work with a chapter summarizing information on examples of virulence mechanisms that are highly conserved.
Download or read book Proceedings of the National Academy of Sciences of the United States of America written by National Academy of Sciences (U.S.) and published by . This book was released on 1989 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Functional Characterization of Pseudomonas Syringae Pv Actinidiae Effectors AvrPto5 and HopF2 written by Karthikeyan Dharmaraj and published by . This book was released on 2018 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pseudomonas syringae pv. actinidiae (Psa) causes kiwifruit bacterial canker and was responsible for a worldwide outbreak. Four Psa biovars have been identified according to their geographical origin and genome sequence. Despite differences in the genomes of the four biovars, ten effectors were conserved in their accessory genome. Two of these, PsaNZV- 13 AvrPto5 and HopF2 were selected for investigation regarding their host protein targets in kiwifruit and non-host resistance in Nicotiana. A candidate host protein-based Y2H using PsaNZV-13 AvrPto5 was performed with kiwifruit proteins which were selected based on previously reported Y2H experiments with PtoDC3000 AvrPto1 and Arabidopsis proteins. None of the corresponding kiwifruit proteins interacted with PsaNZV-13 AvrPto5, however, phylogenetic and protein sequence analyses of PsaNZV-13 AvrPto5 demonstrated a genetic divergence from PtoDC3000 AvrPto1 which could be distinct enough to suggest PsaNZV- 13 AvrPto5 is targeting a different host protein. Intrinsic Disorder Residues (IDRs) and Molecular Recognition Feature (MoRF) investigation in PsaNZV-13 AvrPto5 and PtoDC3000 AvrPto1 revealed a higher level of IDRs (64%) and MoRF (5) in PtoDC3000 AvrPto1 compared to PsaNZV-13 AvrPto5 (IDRs: 28% and MoRF: 1), which also could explain a divergent putative function of PsaNZV-13 AvrPto5. To identify Psa effectors host target in kiwifruit, a high quality in vivo kiwifruit cDNA library was constructed in yeast. Screening of this library with PsaNZV-13 AvrPto5 found three putative positive interacting partners. One of these AcHIPP26 interacted both as bait and prey, suggesting a genuine interaction in Y2H. These proteins did not interact following Co-IP, however, suggesting either a possible disruption of the interaction complex during protein extraction or that the two proteins do not interact. Transient expression of PsaNZV-13 AvrPto5 in N. tabacum did not elicit a hypersensitive response (HR), unlike PtoDC3000 AvrPto1. PsaNZV-13 HopF2 protein sequence alignment with PtoDC3000 HopF2 showed putative ADP-ribosyltransferase (ADP-RT) (Arg72 and Asp174) and myristoylation (Gly2) residues. PsaNZV-13 HopF2 investigation in N. tabacum by transient expression revealed the HR and the ADP-RT residues of PsaNZV-13 HopF2 were critical for elicitation of HR in N. tabacum. The expression of PsaNZV-13 HopF2 in yeast cells delayed growth, which was directly correlated to the ADP-RT residues. The myristoylation residue was not critical for HR which demonstrates PsaNZV-13 HopF2 recognition does not have to occur at the plasma membrane of N. tabacum. Y2H screening revealed a subtilisin-like protease (AcSUB) as a putative target of PsaNZV-13 HopF2. In planta interaction of these proteins could not be detected due to low expression of both proteins. PsaNZV-13 HopF2 appeared to have no interaction with AtRIN4 which is the host target of PtoDC3000 HopF2 when analysed by Y2H. These results indicate a putative ADP-RT activity of PsaNZV-13 HopF2 similar to PtoDC3000 HopF2, but a different in planta target. An investigation of IDRs and MoRF in PsaNZV-13 HopF2 illustrated almost a comparable pattern of IDRs and MoRF with PtoDC3000 HopF2. Transient co-expression of PsaNZV-13 HopF2 and RNAi RIN4 constructs in N. tabacum showed an evidence for a putative role of NtRIN4 in PsaNZV-13 HopF2 induced HR. Overall, the putative ADP-RT activity of PsaNZV-13 HopF2 in N. tabacum suggests it may have a similar role as PtoDC3000 HopF2. In addition, there is a prospect to isolate the resistance gene for PsaNZV-13 HopF2 in N. tabacum.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rice Blast Disease written by Robert S. Zeigler and published by Int. Rice Res. Inst.. This book was released on 1994 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathogen biology. Cell biology of pathogenesis. Signalling systems and gene expression regulating appressorium formation in magnaporthe grisea. Genetic regulation of sporulation in the rice blast fungus. Genetic interactions in magnaporthe grisea that affect cultivar specific avirulence/virulence on rice. Genomic structure and variability in pyricularia grisea. Molecular genetic approach to the study of cultivar specificity in the rice blast fungus. Avirulence genes and mechanisms of genetic instability in the rice blast fungus. Host plant resistance. International collaboration on breeding for resistance to rice blast. Present knowledge of rice resistance genetics and strategies for magnaporthe grisea pathogenicity and avirulence gene analysis. Mapping of blast resistance genes in rice. Molecular genetic analysis fo the rice bacterial blight resistance locus, Xa21. Current status for gene transfer into rice utilizing variety-independent delivery systems. Pathogen population dynamics and utilization of host plant resistance. Virulencecharacteristics of genetic families of pyricularia grisea in Colombia. Race-specific and rate-reducing resistance to rice blast in US rice cultivars. A strategy for accumulating genes for partial resistance to blast disease in rice within a conventional breeding program. Lineage exclusion: a proposal for linking blast population analysis to resistance breeding. Use of host genetic diversity to control cereal diseases: implications for rice blast. Figs, wasps, nematodes and sitting ducks: rice blast, from the outside looking in. Epidemiology, loss assessment, and management. The economic impact of rice blast disease in China. Current rice blast epidemics and their management in Thailand. Rice blast in west Africa: its nature and control. Understanding and modeling leaf blast effects on crop physiology and yield. Methodology for quantifying rice yield effects of blast. The epidemiological basis for blast management. Using simulation models to explore better strategies for the management of blast disease in temperate rice pathosystems. Blast management in high input, high yield potential, temperate rice ecosystems. Practical approaches to rice blast management in tropical monsoon ecosystems, with special reference to Bangladesh. Rice breeding programs, blast epidemics and blast management in the United States. Strategies for the discovery of rice blast fungicides. Biological control of rice leaf blast. Farmers' perspectives. Crop-livestock interactions: implications for crop improvement in sustainable agriculture. Assessing indigenous and traditional knowledge in farming systems. Rice, reason, and resistance: a comparative study of farmers' vs. Scientists' perception and strategies.
Download or read book Plant microbe Interactions 2 written by Gary Stacey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant-Microbe Interactions, Volume 2 Volume 1 of this series has made its appearance and dealt forcefully with impor tant current topics in the field of plant-microbe interactions. We believe that the quality of those chapters was high and should serve as a focal point for the state of the art as well as an enduring reference. Volume 2 builds upon these accom plishments. Chapter 1 discusses the fascinating lipo-chitin signal molecules from Rhizo bium, aspects regarding their biosynthesis, and the basis for host specificity. These molecules are a cardinal example of how microorganisms influence plant development and stimulate speculation that they have identified a previously un known aspect of plant hormone activity. Chapter 2 continues the discussion of Rhizobium by considering the trafficking of carbon and nitrogen in nodules. Al though the ostensible advantage of nodules to plants is the fixation of atmos pheric nitrogen, the actual process involved in supplying reduced nitrogen to the plant host is complex.
Download or read book Investigation of the Molecular Basis of M1 a Mediated Disease Resistance in Barley written by Samuel Peter Simons and published by . This book was released on 1991 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pseudomonas Syringae Pathovars and Related Pathogens written by K. Rudolph and published by Springer Science & Business Media. This book was released on 1997-06-30 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Annual Review of Plant Physiology and Plant Molecular Biology written by and published by . This book was released on 1990 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
