Download or read book Differential Virulence in Erwinia Amylovora written by John Lawrence Norelli and published by . This book was released on 1986 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Factors Affecting the Virulence of Erwinia Amylovora written by William Hal Shaffer and published by . This book was released on 1961 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Studies on Pathogenicity and Virulence Factors of Erwinia Amylovora written by Ron Joel Laby and published by . This book was released on 1991 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virulence of Erwinia Amylovora written by Steven Andrew Lee and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Major Virulence Regulators of Erwinia Amylovora written by 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 Digging Deeper Into the Genetic Basis of Erwinia Amylovora Virulence written by Sara Klee and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire blight is an economically damaging disease of apples and pears caused by the bacterium Erwinia amylovora. It is imperative to keep the cost of healthy foods, including apples, as low as possible to keep them accessible to those in all socioeconomic classes. A better understanding of pathogenesis by E. amylovora could lead to cheaper and safer management practices. This project used a high-throughput virulence screen of E. amylovora Tn5 mutants on immature apple fruit, allowing for rapid, accurate identification of genes required for symptom development. Using this screen, the we have identified several novel virulence genes not previously studied in E. amylovora or any other plant-pathogen system.Elongation Factor P, as well as its modification enzymes EpmA (YjeA) and EpmB (YjeK) were shown to be indispensable for virulence in E. amylovora on both immature apple fruits and tree shoots. Proteomics was used to identify pleiotropic changes to an epmB mutant proteome in two distinct media. Several of these changes to protein groups could be linked to specific phenotypes, such as decreases to extracellular polysaccharide (EPS) production and swimming motility in vitro. A suppressor screen revealed that mutation to the RNA helicase HrpA could partially alleviate the mutant phenotypes of epmA, epmB, and efp mutants. The link between these genes will be valuable in better understanding the physical functioning of EFP.This virulence screen also identified rfbX, which encodes a putative polysaccharide family transporter, as being necessary for full virulence in both apple fruitlet and tree models. rfbX mutants produced less of the EPS amylovoran than wild-type, although lipopolysaccharide (LPS) profiles appear undisturbed. rfbX is located promoter distal as part of a two gene operon alongside yibD, which encodes a putative glycosyltransferase. When either yibD alone or both genes in the operon are mutated simultaneously, the resulting mutants are fully virulent and produce wild-type levels of EPS. When yibD is overexpressed under the lac promoter in wild- type, DrfbX, and DyibDrfbX backgrounds, the resulting strains fail to produce amylovoran or a typical O-antigen banding pattern. Additionally, DyibDrfbX(plac::yibD) was unable to grow in amylovoran minimal medium. This growth defect was partially reversed by mutation to certain LPS biosynthesis genes. Furthermore, several LPS Tn5 mutants failed to produce wild-type levels of amylovoran. Taken together, these results suggest a genetic linkage between EPS and LPS production.Additionally, a forward genetics approach was used to identify and examine the virulence of auxotrophic E. amylovora Tn5 mutants. Their exometabolome when grown in apple extracts was analyzed, as well as the ability of one of these mutants suppress the growth of virulent E. amylovora on detached apple flowers. These experiments may inform future biocontrol methods for fire blight. Taken together, these results have furthered out knowledge about how E. amylovora interacts with the often-stressful host environment and what adaptations are required to successfully cause disease. This work has produced results important to the broader field of microbiology, and developed tools for future researchers of E. amylovora.
Download or read book Investigating Carbohydrate Utilization and Virulence in Erwinia Amylovora written by Emma M. Sweeney and published by . This book was released on 2018 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fire Blight written by Joël L. Vanneste and published by CABI. This book was released on 2000-01-01 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses the bacterial disease, fire blight, and includes its epidemiology, distribution, host range, detection and infection. This work also considers the pathogen, including its biochemistry, genetics and pathogenicity, and finally reviews control, including biological methods.
Download or read book Fire Blight written by Tom Van Der Zwet and published by American Phytopathological Society. This book was released on 2012 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genomics of Plant Associated Bacteria written by Dennis C. Gross and published by Springer. This book was released on 2014-06-16 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes how genomics has revolutionized our scientific understanding of agriculturally important plant-associated bacteria. Each chapter focuses on the genomics of particular bacteria: the first described plant pathogen, Erwinia amylovora; phytoplasmas lacking cell walls; fastidious, phloem-restricted liberibacters; Pseudomonas syringae, which is a genetically tractable model system; Xanthomonas citri, which causes a disease that can devastate citrus crops and Pseudomonas fluorescens, which can protect plants from diseases. Topics considered in this volume include the importance of horizontal gene transfer in originating new bacterial strains and species and advances in transcriptomics that allow us to describe the complex regulatory networks critical to plant-microbe interactions. The availability of the Xanthomonas oryzae genome has led to new technologies in genome editing, which will revolutionize approaches to genetic engineering, even in eukaryotes. The contributions show how genomics has greatly accelerated progress toward understanding the biology of these bacteria and how that understanding can be translated into novel crop protection methods.
Download or read book Compendium of apple and pear diseases written by Turner B. Sutton and published by . This book was released on 2013 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biofilms in the Food Environment written by Anthony L. Pometto III and published by John Wiley & Sons. This book was released on 2015-11-02 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: In nature, microorganisms are generally found attached to surfaces as biofilms such as dust, insects, plants, animals and rocks, rather than suspended in solution. Once a biofilm is developed, other microorganisms are free to attach and benefit from this microbial community. The food industry, which has a rich supply of nutrients, solid surfaces, and raw materials constantly entering and moving through the facility, is an ideal environment for biofilm development, which can potentially protect food pathogens from sanitizers and result in the spread of foodborne illness. Biofilms in the Food Environment is designed to provide researchers in academia, federal research labs, and industry with an understanding of the impact, control, and hurdles of biofilms in the food environment. Key to biofilm control is an understanding of its development. The goal of this 2nd edition is to expand and complement the topics presented in the original book. Readers will find: The first comprehensive review of biofilm development by Campylobacter jejuni An up-date on the resistance of Listeria monocytogenes to sanitizing agents, which continues to be a major concern to the food industry An account of biofilms associated with various food groups such as dairy, meat, vegetables and fruit is of global concern A description of two novel methods to control biofilms in the food environment: bio-nanoparticle technology and bacteriophage Biofilms are not always a problem: sometimes they even desirable. In the human gut they are essential to our survival and provide access to some key nutrients from the food we consume. The authors provide up-date information on the use of biofilms for the production of value-added products via microbial fermentations. Biofilms cannot be ignored when addressing a foodborne outbreak. All the authors for each chapter are experts in their field of research. The Editors hope is that this second edition will provide the bases and understanding for much needed future research in the critical area of Biofilm in Food Environment.
Download or read book Fire Blight written by Tom Van Der Zwet and published by . This book was released on 1979 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gedegen overzichtswerk van perevuur wat betreft verspreiding (Amerika, Europa, Oceanie en Afrika), symptomen, gastheer, fysiologie, ziekte-cyclus, pathalogische anatomie, bestrijdingsmaatregelen en weerstandsvermogen
Download or read book Phytobacteriology written by J. D. Janse and published by CABI. This book was released on 2006 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive manual of phytobacteriology is heavily illustrated with over 200 colour photographs and line illustrations. It begins by outlining the history and science of bacteriology and gives an overview of the diversity and versatility of complex bacteria. It then explains the characterization, identification and naming of complex bacteria, and explores how bacteria can cause disease and how plants react to such disease. The book also discusses the economic importance of bacterial diseases as well as strategies for their control and the reduction of crop losses. It concludes with fifty examples of plant pathogenic bacteria and the diseases that they cause.
Download or read book Molecular Plant Breeding written by Yunbi Xu and published by CABI. This book was released on 2010 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in plant genomics and molecular biology have revolutionized our understanding of plant genetics, providing new opportunities for more efficient and controllable plant breeding. Successful techniques require a solid understanding of the underlying molecular biology as well as experience in applied plant breeding. Bridging the gap between developments in biotechnology and its applications in plant improvement, Molecular Plant Breeding provides an integrative overview of issues from basic theories to their applications to crop improvement including molecular marker technology, gene mapping, genetic transformation, quantitative genetics, and breeding methodology.
Download or read book Induced Resistance for Plant Defense written by Dale R. Walters and published by John Wiley & Sons. This book was released on 2014-10-20 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Induced resistance offers the prospect of broad spectrum, long-lasting and potentially environmentally-benign disease and pest control in plants. Induced Resistance for Plant Defense 2e provides a comprehensive account of the subject, encompassing the underlying science and methodology, as well as research on application of the phenomenon in practice. The second edition of this important book includes updated coverage of cellular aspects of induced resistance, including signalling and defenses, costs and trade-offs associated with the expression of induced resistance, research aimed at integrating induced resistance into crop protection practice, and induced resistance from a commercial perspective. Current thinking on how beneficial microbes induce resistance in plants has been included in the second edition. The 14 chapters in this book have been written by internationally-respected researchers and edited by three editors with considerable experience of working on induced resistance. Like its predecessor, the second edition of Induced Resistance for Plant Defense will be of great interest to plant pathologists, plant cell and molecular biologists, agricultural scientists, crop protection specialists, and personnel in the agrochemical industry. All libraries in universities and research establishments where biological, agricultural, horticultural and forest sciences are studied and taught should have copies of this book on their shelves.
Download or read book Pathogenesis and Host Specificity in Plant Diseases written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
