Salmonellae are important pathogens, responsible for an estimated one million deaths and 100 million human infections annually. Their genomes are mosaic puzzles, results of lateral transfer events that occur within a stable genetic background. Extraordinary diversity of host ranges and pathogenicity traits between different strains are the consequence of both specific genome insertions/deletions and minute changes in genome composition. Genomic information decoded from a multitude of different Salmonella strains and new dramatic insights into pathogenic processes emphasize the fact that Salmonella research is currently at a very exciting juncture. In addition to their fascinating resilience in both the environment and eukaryotic hosts, Salmonella prefer tumors over any other location within the human host (by a factor of 1000 or more). This ability could propel Salmonella into future use as a therapeutic delivery agent to control and/or cure cancers. In this book, internationally accla

This book addresses multiple aspects of biological clocks in prokaryotes. The first part of the book deals with the circadian clock system in cyanobacteria, i.e. the pioneer of bacterial clocks. Starting with the history and background of cyanobacteria and circadian rhythms in microorganisms, the topics range from the molecular basis, structure and evolution of the circadian clock to modelling approaches, Kai systems in cyanobacteria and biotechnological applications. In the second part, emergent timekeeping properties of bacteria in microbiomes and bacteria other than cyanobacteria are discussed. Since the discovery of circadian rhythms in cyanobacteria in the late 1980s, the field has exploded with new information. The cyanobacterial model system for studying circadian rhythms (Synechococcus elongatus), has allowed a detailed genetic dissection of the bacterial clock due to state-of-the-art methods in molecular, structural, and evolutionary biology. Cutting-edge research spanning from cyanobacteria and circadian phenomena in other kinds of bacteria, to microbiomes has now given the field another major boost. This book is aimed at junior and senior researchers alike. Students or researchers new to the field of biological clocks in prokaryotes will get a comprehensive overview, while more experienced researchers will get an update on the latest developments.

Fungal growths affect both human and animal well-being. Many natural pathogens of laboratory animals alter host physiology, rendering the host unsuitable for experimental uses. While the number and prevalence of few pathogens have declined considerably, many still turn up in laboratory animals and represent unwanted variables in research. Investigators using laboratory animals in biomedical experimentation should be aware of the profound effects that many of these agents can have on research. What does the future hold regarding the natural pathogens of laboratory animals? The selection of an animal model must carefully address issues of the type of human disease to mimic, the parameters to follow, and the collection of the appropriate data to answer those questions being asked. Overall, animal models of fungal infection will continue to deepen our understanding of how these infections occur. This book provides a valuable source of information to biological and biomedical scientists and to clinical and doctoral researchers working in the area of fungal infections and diseases of laboratory animal species.

Bacteria have evolved with extraordinary abilities to regulate aspects of their behavior (such as gene expression) in response to signals in the intracellular and extracellular environment. Key to this are the diverse macromolecules (proteins or RNA) that sense change through direct interactions with chemical or physical stimuli. In recent years, there have been tremendous advances in understanding the structure and function of these signal receptors, and how interaction with the signal triggers changes in their activity and downstream events. For some systems, this understanding extends to the atomic level. In this unique book, an international team of experts reviews a selection of important model systems, providing a timely snapshot of the current state of research in the field. Sensory Mechanisms in Bacteria opens with an introductory chapter that reviews the diversity of signal recognition mechanisms, illustrating the breadth of the field. Subsequent chapters include descriptions

Bifidobacteria are Gram-positive anaerobic bacteria, found naturally in the gut of humans and other mammals. They are widely used as probiotic organisms in a vast array of formulations for the prevention, alleviation, and treatment of many intestinal disorders. However, bifidobacteria are fastidious microorganisms and are difficult to study in the laboratory, so until recently, understanding of their genetics lagged behind that of other high GC content Gram-positive bacteria. The application of modern whole genome approaches to bifidobacteria research has changed all of this, permitting the accumulation of an impressive amount of data, something that could not have been foreseen a few years ago. This book brings together the expertise and enthusiasm of the leading bifidobacteria researchers from around the world to provide a state-of-the art overview of the molecular biology and genomics of this exciting and important microbial genus. Topics include: ecology, genomics, comparative geno

This volume presents state-of-the-art protocols for key experiments that have revolutionized our understanding of the bacterial nucleoid. This book is divided into five parts: Part I introduces molecular genetic methods to study bacterial nucleoids; Part II highlights the study of bacterial nucleoid with whole genome analysis method; Part III discusses molecular biology methods to study nucleoid structuring factors; Part IV looks at imaging bacterial nucleoid; and Part V explores biophysics of the bacterial nucleoid. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Thorough and cutting-edge, The Bacterial Nucleoid: Methods and Protocols is a valuable resource that provides a wealth of new information about this chromosome.

This book provides an up-to-date overview of the architecture and biosynthesis of bacterial and archaeal cell walls, highlighting the evolution-based similarities in, but also the intriguing differences between the cell walls of Gram-negative bacteria, the Firmicutes and Actinobacteria, and the Archaea. The recent major advances in this field, which have brought to light many new structural and functional details, are presented and discussed. Over the past five years, a number of novel systems, e.g. for lipid, porin and lipopolysaccharide biosynthesis have been described. In addition, new structural achievements with periplasmic chaperones have been made, all of which have revealed amazing details on how bacterial cell walls are synthesized. These findings provide an essential basis for future research, e.g. the development of new antibiotics. The book's content is the logical continuation of Volume 84 of SCBI (on Prokaryotic Cytoskeletons), and sets the stage for upcoming volumes on Protein Complexes.

This book discusses recent advances in our understanding of the role of oxidants in microbial pathophysiology, providing valuable insights into the complex role of reactive oxygen species (ROS) in host-microbial interactions. The various chapters take readers through the function of ROS in infections ranging from viral to bacterial, and describe how microorganisms have developed complex strategies to not only avoid contact with phagocyte-derived oxidants, but also protect themselves from injury when oxidants are encountered. Featuring the latest research in the field of microbial diseases, this timely book is a ready reference for scientists looking to develop new anti-microbial drugs.

This book is a compilation of past and recent knowledge in the field of emerging drug resistance. The book covers major aspects of drug resistance in bacteria, fungi, malaria, and cancer.Human survival on earth is constantly threatened by disease and syndrome. From the early days, the aim of research in medicine was to find therapeutic agents that can improve the quality of human life. Although humans are dependent on natural compounds from early days their dependence of drugs increased excessively in last century. The advances in chemistry and biology have helped researchers to identify the drugs that have improved treatment of many diseases. The primary factor for treatment of these diseases is dependent on the efficacy of drugs available. The development of resistance to these drugs is one of the major hindrances. Although there are number of books available on this topic, "drug resistance" biology across kingdoms has never been discussed in a coherent way.

This volume focuses on antibiotics research, a field of topical significance for human health due to the worrying increase of nosocomial infections caused by multi-resistant bacteria. It covers several basic aspects, such as the evolution of antibiotic resistance and the influence of antibiotics on the gut microbiota, and addresses the search for novel pathogenicity blockers as well as historical aspects of antibiotics. Further topics include applied aspects, such as drug discovery based on biodiversity and genome mining, optimization of lead structures by medicinal chemistry, total synthesis and drug delivery technologies. Moreover, the development of vaccines as a valid alternative therapeutic approach is outlined, while the importance of epidemiological studies on important bacterial pathogens, the problems arising from the excessive use of antibiotics in animal breeding, and the development of innovative technologies for diagnosing the "bad bugs" are discussed in detail. Accordingly, the book will appeal to researchers and clinicians alike.

The genus Borrelia, in the spirochete phylum, is not closely related to any other bacteria and has a highly unusual genome composed of a linear chromosome and multiple circular and linear plasmids that appear to be in a constant state of rearrangement, recombination, and deletion. The determination of the genome sequence of Borrelia strains has facilitated tremendous advances in understanding this genus at the molecular and cellular level, as well as the pathogenesis of Lyme disease and relapsing fever. In recent years, there has been an explosion of new insights into the molecular biology, genetics, physiology, and ecology of Borrelia and its tick/vertebrate life cycle. This research is of particular importance as the incidence of Lyme borreliosis continues to increase. Written by renowned scientists who have made seminal contributions to the field, this book is a comprehensive guide to the pathogenic Borrelia, providing researchers, advanced students, clinicians, and other professionals with an encyclopedic overview of the molecular biology of this important genus and the pathogenesis of diseases. Leading authorities have made contributions on topics such as Borrelia genomics, DNA replication, gene regulation, transcriptomics, proteomics, metabolism and physiology, cellular structure, motility and chemotaxis, genetic manipulation, evolutionary genetics, ecology, tick interactions, Lyme disease and relapsing fever pathogenesis, animal models, host response, detection, and vaccines. The volume is essential for anyone involved in Borrelia research and is strongly recommended for microbiologists, immunologists, and physicians involved in spirochete research, Lyme borreliosis, or relapsing fever. The book is a recommended reference volume for all microbiology libraries.

Escherichia coli is a facultative anaerobic Gamma-proteobacterium, which belongs to the family Enterobacteriaceae. While being an important constituent of the normal gut microbiota, specialized E. coli clones have acquired genetic elements that allow them to compete with the endogenous commensals, colonise normally sterile niches and cause disease. E. coli pathotypes can cause intestinal and extra intestinal infections (e.g. UTI, sepsis) and associate with mammalian cells while being extra- or intra-cellular. In recent years, E. coli infections have become a serious clinical problem, due to the rapid spread of antibiotic resistance. Thus, infections with intestinal E. coli (e.g. E. coli O104) or extraintestinal pathogenic strains (e.g. E. coli ST131) are becoming difficult to treat and are often lethal. Consequently, there is a pressing need to develop alternative control measures, including the identification of new drug targets and development of vaccines that offer lasting protection. This volume focuses on several types of E. coli infections (intestinal and extraintestinal), virulence factors, and E. coli pandemics. It addresses the problem of antibiotic resistance, and a dedicated chapter discusses the need to develop alternative control measures. Given its depth and breadth of coverage, the book will benefit all those interested in the biology, genetics, physiology and pathogenesis of E. coli, and in related vaccine development.

The type I interferon (IFN) signaling pathway is well recognized as a pathway activated by viral infections. It is activated by a variety of microbial pattern recognition receptors including the Toll-like receptors, NOD-like receptors and several cytosolic receptors. Activation of the type I IFN pathway leads to the production of both antiviral factors and products that influence immune cell function. More recently it has been shown that bacteria are also capable of activating this pathway. Bacterial Activation of Type I Interferons reviews both the current understanding of how different bacterial species are able to activate this pathway as well as the influence type I IFNs have on the outcome to infection. Several different bacterial species are covered, spanning Gram positive and Gram negative, intracellular, extracellular, and different host infection sites. An introduction to the pathogenesis of each organism is provided, and the signaling molecules involved in the activation of the type I IFN pathway and the role it plays in animal infection models are also covered.

Streptococcus Pneumoniae: Molecular Mechanisms of Host-Pathogen Interactions provides a comprehensive overview of our existing knowledge on Streptococcus pneumoniae antibiotic resistance, dissemination, and pathogenesis, including immunology. It presents a state-of-the-art overview of the implications of existing data, along with the areas of research that are important for future insights into the molecular mechanisms of pneumococcal infections and how to combat these infections. Users will find a timely update on the topic, as the dramatic increase in antibiotic resistance pneumoniae cases and limitations of the currently available pneumoniae vaccines are creating new concerns on these gram-positive bacteria that are endowed with a high virulence potential, and are the most common etiologic agent of respiratory and life-threatening invasive diseases.

Microorganisms play an important role in the maintenance of the ecosystem structure and function. Bacteria constitute the major part of the microorganisms and possess tremendous potential in many important applications from environmental clean up to the drug discovery. Much advancement has been taken place in the field of research on bacterial systems. This book summarizes the experimental setups required for applied microbiological studies. Important background information, representative results, step by step protocol in this book will be of great use to the students, early career researchers as well as the academicians. The book describes many experiments covering the basic microbiological experiments to the applications of microbial systems for advanced research. Researchers in any field who utilize bacterial systems will find this book very useful. In addition to microbiology and bacteriology, this book will also find useful in molecular biology, genetics, and pathology and the volume should prove to be a valuable laboratory resource in clinical and environmental microbiology, microbial genetics and agricultural research. Unique features * Easy to follow by the users as the experiments have been written in simple language and step-wise manner. * Role of each reagents to be used in each experiment have been described which will help the beginners to understand quickly and design their own experiment. * Each experiment has been equipped with the coloured illustrations for proper understanding of the concept. * Trouble-shootings at the end of each experiment will be helpful in overcoming the problems faced by the users. * Flow-chart of each experiment will quickly guide the users in performing the experiments.

This volume is designed to be a resource of proven techniques and approaches for probing the activities of bacterial, eukaryotic, and archaeal RNA polymerases. This book features a collection of in vitro and in vivo technologies that will permit researchers to purify and probe the position and stability of RNA polymerase complexes at different points of the transcription cycle, analyze the various translocations and intermolecular movements associated with catalysis, define recruitment strategies, probe the roles of transcription factors in each stage of the cycle, highlight conserved and disparate fidelity mechanisms, analyze the resultant transcripts, and study coordination of the nascent mRNA synthesis by the RNA polymerase and mRNA translation by the ribosome. Written in the highly successful Methods of Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and key tips on troubles troubleshooting and avoiding known pitfalls. Practical and timely, Bacterial Transcriptional Controls: Methods and Protocols highlights the breadth and depth of techniques that are likely to continue shaping the transcription community in the future.

This book provides comprehensive coverage of the scientific aspects of cheese, emphasizing fundamental principles. The book's updated 22 chapters cover the chemistry and microbiology of milk for cheesemaking, starter cultures, coagulation of milk by enzymes or by acidification, the microbiology and biochemistry of cheese ripening, the flavor and rheology of cheese, processed cheese, cheese as a food ingredient, public health and nutritional aspects of cheese, and various methods used for the analysis of cheese. The book contains copious references to other texts and review articles.

During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant-microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research areas of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programmes.

Pulses have played a major role in human diet and are considered a rich source of proteins. But, the major constraints in achieving the yield of pulses are the occurrences of various diseases and pests. Hence, there is a need to understand major fungal pathogens and their management strategies for sustainable agriculture. The major pulse crops in India and other Asian countries are bengal gram, pigeon pea, black gram, green gram, lentil and peas, which are attacked by several pathogens that cause considerable crop damage. Bengal gram is affected mainly by wilt (Fusarium oxysporum f. sp. ciceri), blight (Mycosphaerella pinodes) and rust (Uromyces ciceris-arietini). The main diseases of pigeon pea are wilt (Fusarium oxysporum) and Phytophtora stem blight (Phytophthora drechsleri f. sp. cajani). Powdery mildew (Erysiphe polygoni) and rust (Uromyces vicia-fabae) are the most important diseases affecting the production of pea. This volume offers details like symptoms, distribution, pathogens associated, predisposing factors and epidemiology, sources of resistance and holistic management of diseases with particular reference to those of economic importance. Several minor diseases of lentil, green gram and of black gram are discussed with their detailed and updated information. This volume provides pooled information regarding the management of major fungal phytopathogens affecting pulses.

This volume brings together the most widely used and important protocols currently being employed in researching and understanding bacterial cell wall homeostasis. Chapters in Bacterial Cell Wall Homeostasis cover a variety of subjects, such as: modern microscopy techniques and other biophysical methods used to characterize the subcellular structure of the bacterial cell wall; high-throughput approaches that can be used to identify all the genes and proteins that participate in the correct functioning of an organism's cell wall; protocols for assaying individual gene products for specific cell wall functions or identify chemicals with inhibitory activity against the cell wall; and methods for analyzing the non-protein components of the cell wall and the increasing use of computational approaches for predicting and modeling cell wall related functions and processes. Written in the highly successful Methods in Molecular Biology series format, chapters include introduction to their respective topics, lists of the necessary material and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Thorough and cutting-edge, Bacterial Cell Wall Homeostasis: Methods and Protocols emphasizes the diversity of the research taking place in bacterial cell wall homeostasis, and explains how the integration of information from across multiple disciplines is going to be essential if a holistic understanding of this important process is to be obtained.

This book summarizes the current state of knowledge concerning bacteria that use halogenated organic compounds as respiratory electron acceptors. The discovery of organohalide-respiring bacteria has expanded the range of electron acceptors used for energy conservation, and serves as a prime example of how scientific discoveries are enabling innovative engineering solutions that have transformed remediation practice. Individual chapters provide in-depth background information on the discovery, isolation, phylogeny, biochemistry, genomic features, and ecology of individual organohalide-respiring genera, including Dehalococcoides, Dehalogenimonas, Dehalobacter, Desulfitobacterium and Sulfurospirillum, as well as organohalide-respiring members of the Deltaproteobacteria. The book introduces readers to the fascinating biology of organohalide-respiring bacteria, offering a valuable resource for students, engineers and practitioners alike.

This book provides a selection of recently developed methods and protocols in bacterial glycomics to aid in bettering our understanding of the structures and functions of bacterial polysaccharides, their attachments to proteins and lipids, their role in biofilm formation, as well as their biosynthesis. With the emerging bacterial resistance to commonly used antibiotics world-wide, these techniques to study the outer polysaccharides of bacteria, with their functions in bacterial adhesion, colonization, growth, establishment of biofilms, and control virulence and pathogenicity, are increasingly important. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Bacterial Polysaccharides: Methods and Protocols aims to support researchers contributing to future approaches that will fill our knowledge gaps and define anti-bacterial targets.

Legionnaires disease, a potentially fatal type of pneumonia primarily affecting elderly and immuno-compromised persons, is caused by the ubiquitous environmental bacterium "Legionella pneumophila." This book offers authoritative reviews of different facets of its virulence, focusing on comparative phagocyte infection, virulence gene regulation, biochemical functions of effector proteins and cellular pathogen-host interactions, as well as host responses and immunity to "L. pneumophila." Taken together, the contributions in this compilation provide a state-of-the-art overview of current insights into the molecular pathogenesis of the opportunistic and potentially fatal pathogen "L. pneumophila.""