The Downy Mildews Biology Mechanisms Of Resistance And Population Ecology

The book is focused on the most recent and significant advances in research on downy mildews and related oomycete pathogens. The emphasis is on the biology of downy mildews, mechanisms of resistance in host- and non-host parasite interactions, population ecology and epidemiology, chemical control and fungicide resistance. The chapters are written by leading international experts on various aspects of downy mildews. All contributions are either comprehensive critical reviews or original research papers, and cover the most relevant and recent topics related to these biotrophic plant pathogens. The recent Special Issue is a continuation of previous one published by Springer in 2008.

The book reviews key developments in downy mildew research, including the disease, its distribution, symptomatology, host range, yield losses, and disease assessment; the pathogen, its taxonomy, morphology, phylogeny, variability, sporulation, survival and perpetuation, spore germination, infection, pathogenesis, seed infection, disease cycle, epidemiology, forecasting, and fine structures. The book also elaborates the mechanisms of host resistance (biochemical, histological, genetic, and molecular, including cloning and the mapping of R-genes), disease resistance breeding strategies, and the genetics of host-parasite interactions. It explores disease management based on cultural, chemical, biological, host resistance, and integrated approaches; and provides suggestions for future research areas. This book offers a comprehensive guide to an economically important disease, reviewing in detail the extant body of literature. Divided into 16 chapters, each of which includes a wealth of photographs, graphs, histograms, tables, figures, flow charts, micrographs etc., it represents an invaluable source of information for all researchers, teachers, students, industrialists, farmers, policymakers, and all others who are interested in growing healthy and profitable cruciferous crops all over the world.

Knowledge of downy mildew pathogens and diseases has increased significantly in taxonomy, phylogeny, genetics, molecular biology, host-parasite interactions, ecology, epidemiology and control. The opportunity to update comprehensively the major advances in these areas was created by the 2nd International Symposium on Downy Mildews held in July 2007 at Olomouc (Czech Republic). Keynote contributions from this meeting are published here in 14 chapters that provide the most authoritative and recent analysis of these biotrophic plant pathogens and their interactions with plants. It will be an invaluable resource to students and researchers in plant pathology, mycology, taxonomy, plant biology and crop protection.

Plant resistance to pathogens is one of the most important strategies of disease control. Knowledge of resistance mechanisms, and of how to exploit them, has made a significant contribution to agricultural productivity. However, the continuous evolution of new variants of pathogen, ana additional control problems posed by new crops and agricultural methods, creates a need for a corresponding increase in our understanding of resistance and ability to utilize it. The study of resistance mechanisms also has attractions from a purely academic point of view. First there is the breadth of the problem, which can be approached at the genetical, molecular, cellular, whole plant or population lev~ls. Often there is the possibility of productive exchange of ideas between different disciplines. Then there is the fact that despite recent advances, many of the mechanisms involved have still to be fully elucidated. Finally, and compared with workers in other areas of biology, the student of resistance is twice blessed in having as his subject the interaction of two or more organisms, with the intriguing problems of recognition, specificity and co-evolution which this raises.

The microbial ecosystem provides an indigenous system for improving plant growth, health and stress resilience. Plant microbiota, including isolated microbial communities, have been studied to further understand the functional capacities, ecological structure and dynamics of the plant-microbe interaction. Due to climatic changes, there is an urgent need to bring microbial innovations into practice. Mitigation of Plant Abiotic Stress by Microorganisms: Applicability and Future Directions is a comprehensive review of the different strategies available to improve the plant microbiome. Chapters include key topics such as: harnessing endophytic microbial diversity, microbial genes for improving abiotic stress tolerance, and microbial bioformulations. Putting these strategies into practice can have varying success in the field, so it is crucial that scientists are equipped with the knowledge of which microorganisms are needed, as well as the use and suitability of delivery approaches and formulations. This title will be an essential read for researchers and students interested in plant microbial technologies and plant bio stimulants, plant pathology, biocontrol, agronomy, and environmental mediation. Discusses adaptive mechanisms of plant against multiple stresses Highlights diversity of symbiotic microorganisms associated with insects and their impact on host plants Provides functional genomics tools for studying microbe-mediated stress tolerance

Rhizosphere biology is approaching a century of investigations wherein growth-promoting rhizomicroorganisms (PGPR) have attracted special attention for their ability to enhance productivity, profitability and sustainability at a time when food security and rural livelihood are a key priority. Bio-inputs - either directly in the form of microbes or their by-products - are gaining tremendous momentum and harnessing the potential of agriculturally important microorganisms could help in providing low-cost and environmentally safe technologies to farmers. One approach to such biologically-based strategies is the use of naturally occurring products such as PGPR. Written by an international team of experts, this book considers new concepts and global issues in biopesticide research and evaluates the implications for sustainable productivity. It is an invaluable resource for researchers in applied agricultural biotechnology, microbiology and soil science, and also for industry personnel in these areas.

Biosecurity and Bioterrorism, Second Edition, takes a holistic approach to biosecurity, with coverage of pathogens, prevention, and response methodology. It addresses these hazards in the context of vulnerability assessments and the planning strategies government and industry can use to prepare for and respond to such events. The book is organized into four thematic sections: Part I provides a conceptual understanding of biowarfare, bioterrorism and the laws we have to counteract this; Part II investigates known bioagents and the threat from emerging diseases; Part III focuses on agricultural terrorism and food security; and Part IV outlines international, US, and local initiatives for biodefense and biosecurity. Case studies illustrate biodefense against both intentional terrorism and natural outbreaks. Covers emerging threats of pandemic influenza, antibiotic resistant strains of bacterial pathogens, and severe respiratory diseases caused by novel viruses Offers increased international coverage, including initiatives to counter biological weapons and threats, and food security Updated throughout with latest protocols for dealing with biological threats and new case studies Includes online instructor ancillaries - PowerPoint lecture slides, test questions, and an instructor manual, for increased classroom functionality

Powdery mildew disease is the fourth most widespread disease in cruciferous crops and a devastating effect, causing significant losses in terms of quality and quantity in rapeseed and mustard. Powdery mildews are also a favourable host-pathosystem model for basic research on host–parasite interactions, developmental morphology, cytology, and molecular biology to identify the effector proteins/genes governing different biological functions. This book provides a comprehensive overview of all the published information in the field for researchers, teachers, students, extension experts, industrialists and farmers, and includes illustrations, photographs, graphs, figures, tables, histograms, micrographs, electron micrographs, and flow charts to aid understanding. It also describes standardized reducible techniques. The book discusses each disease in detail, describing the distribution, symptomatology, host range, yield losses and disease assessment, as well as the taxonomy, morphology, phylogeny, variability, sporulation, survival and perpetuation of the pathogen. Further, it explores topics such as spore germination; infection; pathogenesis; disease cycle; epidemiology; forecasting; fine structures; host resistance; biochemical, histological, genetic and molecular aspects such as cloning and mapping of R genes; sources of resistance; disease resistance breeding; and the genetics of host-parasite interactions and disease management.