Every day many people suffer from intestinal diseases. These disorders can result from pathogens like bacteria, fungi, parasites and viruses, but the causes of non-infectious intestinal disorders and colorectal cancers remain to be elucidated. Disturbances to the normal gut flora (the microbiota) are central to the development of many, if not all, of these disorders.

Disturbed gut microbiota is a prelude to public health issues like traveller's-, antibiotic- and "Clostridium difficile"-associated diarrhoea, irritable bowel syndrome, inflammatory bowel disease, and colorectal cancers. This book discusses the way intestinal disorders affect the microbiota, how the disturbed microbiotal balance leads to enteric disorders and the ways to prevent these disorders.

Further his book explores the potential ofprobiotics (live microorganisms that when ingested bring a health benefit) in treating enteric disorders by analysing the probiotic genome through proteomics, metabolomics and functional assays. Discussed is how the ingestion of specific microorganisms repairs the disturbed microbiota and subsequently ameliorates enteric disorders. Finally this book addresses how genetic engineering and biotechnology will contribute to the development of effective and safe designer probiotics. "

Carotenoids are a family of yellow to orange-red terpenoid pigments synthesized by photosynthetic organisms and many bacteria and fungi. They have beneficial health effects protecting against oxidative damage and may be responsible for the colours associated with plants and animals. In "Microbial Carotenoids from Bacteria and Microalgae: Methods and Protocols, "expert researchers in the field detail many of the most up-to-date methods which are now commonly used to study carotenoids. These include methods for the study of canthaxanthin production, construction of carotenoid reporter systems, directed evolution of carotenoid synthases, and improvement of b-carotene hydroxylase catalytic activity are described. Additionally, the book includes methods of DNA fingerprinting for the identification of carotenogenic "Dunaliella" species, ketocarotenoid biosynthesis in microalgae expressing the beta-C-4-carotene oxygenase gene, characterization of carotenogenesis genes in "Anabaena" sp., obtaining lutein from microalgal biomass, NMR-based isotopologue profiling of microbial carotenoids, and analysis of diapocarotenoids. 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 key tips on troubleshooting and avoiding known pitfalls.

Authoritative and practical, " Microbial Carotenoids from Bacteria and Microalgae: Methods and Protocols "provides practical experimental laboratory procedures for a wide range of carotenoids producing microorganisms."

In Pseudomonas aeruginosa, expert researchers in the field detail many of the methods which are now commonly used to study this fascinating microorganism. Chapters include microbiological methods to high-throughput molecular techniques that have been developed over the last decade. 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 key tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Pseudomonas aeruginosa aids in the continuing study of new and cutting edge findings.

This book will cover both the evidence for biofilms in many chronic bacterial infections as well as the problems facing these infections such as diagnostics and treatment regimes. A still increasing interest and emphasis on the sessile bacterial lifestyle biofilms has been seen since it was realized that that less than 0.1% of the total microbial biomass lives in the planktonic mode of growth. The term was coined in 1978 by Costerton et al. who defined the term biofilm for the first time.In 1993 the American Society for Microbiology (ASM) recognised that the biofilmmode of growth was relevant to microbiology. Lately many articles have been published on the clinical implications of bacterial biofilms. Both original articles and reviews concerning the biofilm problem are available.

Due to the possibility that petroleum supplies will be exhausted in the next decades to come, more and more attention has been paid to the production of bacterial pl- tics including polyhydroxyalkanoates (PHA), polylactic acid (PLA), poly(butylene succinate) (PBS), biopolyethylene (PE), poly(trimethylene terephthalate) (PTT), and poly(p-phenylene) (PPP). These are well-studied polymers containing at least one monomer synthesized via bacterial transformation. Among them, PHA, PLA and PBS are well known for their biodegradability, whereas PE, PTT and PPP are probably less biodegradable or are less studied in terms of their biodegradability. Over the past years, their properties and appli- tions have been studied in detail and products have been developed. Physical and chemical modifications to reduce their cost or to improve their properties have been conducted. PHA is the only biopolyester family completely synthesized by biological means. They have been investigated by microbiologists, molecular biologists, b- chemists, chemical engineers, chemists, polymer experts, and medical researchers for many years. PHA applications as bioplastics, fine chemicals, implant biomate- als, medicines, and biofuels have been developed. Companies have been est- lished for or involved in PHA related R&D as well as large scale production. It has become clear that PHA and its related technologies form an industrial value chain in fermentation, materials, feeds, and energy to medical fields.

This volume collects new information on the genomics of saprophytic soil Pseudomonas, as well as functions related to genomic islands. It explores life styles in different settings and sheds further insights on the wide metabolic potential of this microbe for the removal of pollutants and production of added-value products. This volume also explores how Pseudomonas responds and reacts to environmental signals, including detection of cell density.

"Host-Bacteria Interactions: Methods and Protocols" details cutting edge protocols that cover aspects of the investigation of host bacteria interactions using mammalian and novel non mammalian infection models, cell biology, OMICS and bacterial genetics. Chapters focus on techniques that can be used to investigate different aspects of the physiopathology of bacterial infections, from the whole animal to tissue, cellular and molecular level. 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.

Authoritative and cutting-edge, "Host-Bacteria Interactions: Methods and Protocols "provide researchers with a comprehensive account of the practical steps necessary for carrying out each protocol successfully.

This detailed book contains chapters using unbiased approaches such as chemical and transposon mutagenesis, as well as a protocol for allelic exchange, to make targeted mutants in Staphylococcus, as generating mutants of this bacteria can be accomplished in many ways, depending on the intended changes. Using these methods, the authors have been successful at making mutants that span individual single-nucleotide changes in the chromosome to whole genome mutant libraries. The latter strategy provides a useful tool for high-throughput screening, while single nucleotide changes are an elegant way of teasing apart the importance of single nucleotides in gene expression or to create specific amino acid substitutions to examine protein function. Written for the 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. Practical and authoritative, The Genetic Manipulation of Staphylococci: Methods and Protocols serves as a vital resource and guide to scientists in the Staphylococcus community as they pursue their studies on these bacteria.

Secreted proteins are particularly important in bacterial pathogenesis. These proteins have a range of biological functions from host cell toxicity to more subtle alterations of the host cell for the benefit of the invader. The importance of protein secretion to bacterial pathogens is exemplified by the array of mechanisms that have evolved for this purpose. This extensive publication - on bacterial secreted proteins, the secretory systems of bacteria, and the vital role of secreted proteins in bacterial pathogenesis - will be of immense value to all microbiologists, molecular biologists, public health scientists, and researchers engaged in the study of pathogenesis, drug design, and vaccine development. A skillful selection of topics and a panel of acknowledged experts have ensured that this volume will become an important reference source for many years to come. The book is divided into two sections. The first section describes the various protein secretion systems, including mechanisms for secretion across the cytoplasmic membrane of Gram-negative and Gram-positive bacteria, the specialized mechanisms for secretion across the Gram-negative outer membrane, the systems for transport across both membranes of Gram-negative bacteria, the protein secretion systems in Gram-positive bacteria, the secretion of surface fimbrae/pili, and the less well-defined pathways. Section two describes the protein secretion mechanisms and secreted proteins of a number of important human, veterinary, and plant pathogens and their role in the pathogenicity of these organisms. The pathogens covered have been selected on the basis that there is active research on protein secretion by these pathogens and they employ a diverse array of secreted proteins and protein secretion systems. Each of the book's chapters can be read in isolation. The book constitutes a broad and in-depth description of the current knowledge of bacterial protein secretion and its role in pathogenesis. It is a recommended reference volume for all microbiology libraries.

This volume reviews the current understanding of the taxonomy, disease syndromes, genetics, biology, and pathogenic factors of Histophilus somni, as well as the host immune response to this pathogen. H. somni is one of the most important bacterial pathogens in cattle and other ruminants, and its virulence factors are highly conserved with Haemophilus influenzae and other members of the Pasteurellaceae. H. somni has been recognized as a major cause of thrombotic meningoencephalitis, respiratory disease syndromes, myocarditis, reproductive disease syndromes, polyarthritis, mastitis, ocular disease, and septicemia. The only known habitats of H. somni are the mucosal surfaces of ruminants, making this bacterium an opportunistic pathogen. Although it is capable of causing inflammation at systemic sites and is toxic to epithelial and phagocytic cells, the bacterium's wide array of virulence factors act primarily as a defense against, or to escape recognition from, host innate and adaptive immunity.

The field of bacterial diagnostics has seen unprecedented advances in recent years. The increased need for accurate detection and identification of bacteria in human, animal, food, and environmental samples has fueled the development of new techniques. The field has seen extensive research aided by the information from bacterial genome sequencing projects. Although traditional methods of bacterial detection and identification remain in use in laboratories around the world, there is now a growing trend toward the use of nucleic ac- based diagnostics and alternative biochemically and immunologically based formats. The ultimate goal of all diagnostic tests is the accurate detection, identification, or typing of microorganisms in samples of interest. Although the resulting information is of obvious use in the areas of patient management, animal health, and quality control, it is also of use in monitoring routes of infection and outlining strategies for infection control. There is, therefore, a need to ensure that the information being provided is of the highest standard and that any new technique is capable of delivering this.

Beginning with the basics of lactic acid bacteria and stress response, then working into specific fields of research and current developments, "Stress Responses of Lactic Acid Bacteria" will serve as an essential guidebook to researchers in the field, industry professionals, and advanced students in the area.

The exploration of stress responses in lactic acid bacteria began in the early 90s and revealed the differences that exist between LAB and the classical model microorganisms. A considerable amount of work has been performed on the main genera / species of LAB regarding the genes implicated and their actual role and regulation, and the mechanisms of stress resistance have also been elucidated. Recent genome and transcriptome analyses complement the proteome and genetic information available today and shed a new light on the perception of and the responses to stress by lactic acid bacteria.

Expert scientists critically review the current and most recent advances in the genomics and molecular biology of mycobacteria. The focus is on the topical and most relevant aspects and the authors aim to give readers an insight into the current understan

Pseudomonas volume 7 collects some of the most relevant and emerging issues in the biology of these microorganisms, and a number of other important issues that were not collected in the previous volumes. The first six volumes of the Pseudomonas series covered the biology of pseudomonads in a wide range of contexts, including the niches they inhabit, the taxonomic relations among its members of this group, the molecular biology of gene expression in different niches and under different environmental conditions, the analysis of virulence in plants, animal and human pathogens, as well as the determinants that make some of these strains of interesting for biotechnological applications. This seventh volume covers the following topics: The history of the biology of Pseudomonas The use of Pseudomonas as biological agents New trends in the molecular biology of these microorganisms Pseudomonas and the immune system of insects and animals This book will be of use to researchers working on these bacteria, particularly those studying medical aspects of Pseudomonas, and their use as a means to control pathogens or to stimulate plant growth. This volume is also interesting for those studying the physiology, genetics, molecular biology of Pseudomonas and those using novel-omics approaches to understand bacteria of the genus Pseudomonas.

The future of agriculture strongly depends on our ability to enhance productivity without sacrificing long-term production potential. An ecologically and economically sustainable strategy is the application of microorganisms, such as the diverse bacterial species of plant growth promoting bacteria (PGPB). The use of these bio-resources for the enhancement of crop productivity is gaining worldwide importance.

""Bacteria in Agrobiology: Stress Management"" covers the major aspects on PGPR in amelioration of both abiotic and biotic stresses. PGPR mediated in priming of plant defense reactions, nutrient availability and management in saline and cold environment, hormonal signaling, ACC deaminase and its role in ethylene regulation under harsh conditions are suitably described.

Since its early days in the 1990s, the Quorum Sensing (QS) field has grown from a few dozen laboratories, investigating the pathways, proteins, and chemicals that facilitate signaling in bacteria, to hundreds of groups that have integrated evolutionary biology, computer science, mathematics, engineering, and metagenomics to create an ever-expanding and dynamic field. In Quorum Sensing: Methods and Protocols, expert researchers provide an in-depth set of diverse protocols that span this broad area of study. Broken into three detailed sections, the volume covers the detection, isolation, and characterization of the QS signals made by both Gram- and Gram+ bacteria, determination of the function of QS signals in vivo, and the development of QS disruption strategies. Written in the highly successful Methods in Molecular Biology (TM) series format, chapters include brief introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and expert tips on troubleshooting and avoiding known experimental pitfalls. Comprehensive and cutting-edge, Quorum Sensing: Methods and Protocols serves as an invaluable collection of easily accessible techniques for scientists seeking to further our knowledge about bacterial communication and its relation to humanity.

Legionella is a deadly pneumonia that has a high mortality rate among the elderly. The detailed protocols outlined in this new book in the 'Methods in Molecular Biology' series will extend our understanding of the bacterium and aid its elimination from our water supplies.

This manual reflects practical approaches to handling bacteria in the labora- tory. It is designed to recall historical methods of bacterial genetics that have had recent developments and to present new techniques that allow full genome analysis. It has been written for microbiologists who need to group their protocols at the state of the art of a new millennium and also for scientists in other fields of life sciences who need to use bacteria for their research. Teachers, graduate students, and postdocs also will benefit from having these protocols to help them understand modern bacterial genetics. I learned so much from these contributions from my colleagues that I have no doubt about the daily usefulness of this book. April 2002 Michel Blot XII Abbreviations Acyl-HSL N-acyl homoserine lactone moi multiplicity of infection Amp or Ap ampicillin N amino C carboxy NMR nuclear magnetic resonance CIO-HSL N-decanoyl-L-homoserine lactone 3-0H-C14:1-HSL N-(3-hydroxy-7 -cis-tetra- C12-HSL N-dodecanoyl-L-homoserine lac- decanoyl)homo-serine lactone tone 3-0H-C4-HSL N-3-hydroxybutanoyl-L- C14-HSL N-tetradecanoyl-L-homoserine homoserine lactone lactone ONPG o-nitrophenyl ~-D-galactopyranoside C4-HSL N-butanoyl-L-homoserine lactone ORF open reading frame C6-HSL N-hexanoyl-L-homoserine lactone OTG I-S-octyl-~-D-thioglucoside C8-HSL N-octanoyl-L-homoserine lactone 3-oxo-CIO-HSL N-3-oxodecanoyl-L-homo- Cam or Cm chloramphenicol serine lactone CBD chitin binding domain 3-oxo-C12-HSL N-3-oxododecanoyl-L- CHEF contour clamped homogenous electric homoserine lactone field 3-oxo-C14-HSL N-3-oxotetradecanoyl-L- CI consistency index homoserine lactone CRIM conditional-replication, integration, 3-oxo-C4-HSL N-3-oxobutanoyl-L-homoser- and modular ine lactone dCTP deoxycytidine triphosphate 3-oxo-C6-HSL N-3 -oxohexanoyl-L-homoser- deg.

This collection of diverse articles by the pioneers of modern genomics takes stock of the current state of the field and elucidates the contribution that sequencing genomes has made to our understanding of microbial metabolism and evolution. Through twenty-eight thought-provoking chapters, the authors describe some of the most common computational methods and their applications to studying pathogenic microorganisms, show how genomics can be used to reconstruct the history and dynamism of the microbial world, and discuss issues as diverse as reconstruction of metabolic pathways, cell cycle processes, microbial evolution, metagenomics, and vaccine development. Additional chapters deal with microarrays and expression analysis and the role of genomic in drug discovery.

During the past twenty years, multitudes of exciting discoveries in the field of anaerobic bacteria have been made. BIOCHEMISTRY AND PHYSIOLOGY OF ANAEROBIC BACTERIA explores the full range of these microorganisms. Many anaerobes have been found to have the uniquely fascinating quality of being able to survive, indeed even thrive, in extreme environments. Anaerobic bacteria often do not require oxygen, can survive extremes in temperature, and can withstand the presence of toxins and heavy metals. In addition, these organisms have very different metabolic processes than "conventional" microorganisms. The wide diversity of metabolism in anaerobes is only part of the story. They have distinct energies, cytochromes, electron transport proteins, hydrogenases and dohydrogenases. Their molecular biology, physiology, and ability to use many types of electron receptors (CO2, sulfur, nitrogen and metal oxides) are also extraordinary. With practical applications ranging from wastewater treatment to food storage issues, clinical diagnosis and treatment of a wide range of medical conditions to decontamination of heavy metal exposures BIOCHEMISTRY AND PHYSIOLOGY OF ANAEROBIC BACTERIA will prove indispensable to researchers and students alike.

Beginning with an introduction to relevant genetic techniques, chapters cover all major groups of LAB, including the Bifidobacteria; plasmid biology, gene transfer, phage, and sugar metabolism; gene expression of various LAB; applications for genetically engineered LAB, including the emerging field of medical applications; and the legal and consumer issues that arise from such applications. This resource will set the benchmark for the state of knowledge of LAB genetics and should be of value to food scientists and other researchers working with LAB in its present and future capacities. Professionals using lactic acid bacteria (LAB) for research and/or as working organisms, whether in food and dairy fermentations or in the exciting new field of clinical delivery agents, will find this book invaluable. In addition, professors teaching under- and post-graduates in microbiology, and postgraduate research students will also find this an essential reference work.

Network-based representations have become pervasive in most fields in biology. Bacterial Molecular Networks: Methods and Protocols provides authoritative descriptions of various experimental and computational methods enabling the characterization and analysis of molecular interaction networks, with a focus on bacteria. Divided into three convenient sections, this volume provides extensive coverage of various experimental and in silico approaches aiming at the characterization of network components, addresses the presentation of computational approaches to analyze the topology of molecular networks, and further introduces a variety of methods and tools enabling scientists to generate qualitative or quantitative dynamical models of molecular processes in bacteria. Written in the highly successful Methods in Molecular Biology (TM) series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and notes on troubleshooting and avoiding known pitfalls. Authoritative and accessible, Bacterial Molecular Networks: Methods and Protocols is intended primarily for post-graduate students and researchers working in the field of experimental and computational microbiology and provides a combination of up-to-date reviews along with detailed protocols written by the developers of bioinformatics resources, such as databases and software tools.

Bacteria pathogenic for plants are responsible for devastating losses in agriculture. The use of antibiotics to control such infections is restricted in many countries due to worries over the evolution and transmission of antibiotic resistance. The advent of genome sequencing has enabled a better understanding, at the molecular level, of the strategies and mechanisms of pathogenesis, evolution of resistance to plant defense mechanisms, and the conversion of non-pathogenic into pathogenic bacteria. In this book, internationally acclaimed experts review the most important developments, providing an invaluable up-to-date summary of the molecular biology and genomics of plant pathogenic bacteria. The book opens with two chapters on bacterial evolution, diversity, and taxonomy - topics that have been transformed by molecular biology and genomics analyses. The third chapter delves into the crucially understudied area of pathogen adaptation to the plant apoplast environment. The next seven chapters focus on specific plant pathogens: Agrobacterium, Leifsonia, Pectobacterium, Pseudomonas, Ralstonia, Xanthomonas, and Xylella. The following four chapters review specific, intensively studied areas of research in the plant pathogen field: microbe associated molecular patterns (MAMPs) and innate immunity; use of bacterial virulence factors to suppress plant defense; cyclic di-GMP signalling and the regulation of virulence; and plasmids and the spread of virulence. The final chapter covers the critical area of bioinformatics. With contributions from some of the pioneering bacterial plant pathogen genome sequencers, this book is essential reading for every plant pathogen researcher - from the PhD student to the experienced scientist - as it provides a timely review of the current and most topical areas of research.

Macrolide Antibiotics: Chemistry, Biochemistry, and Practice, Second Edition explores the discovery of new macrolide antibiotics, their function, and their clinical use in diseases such as cancer, AIDS, cystic fibrosis and pneumonia. This book discusses the creation of synthetic macrolides and the mechanisms of antibiotic activity. The uses for antimicrobial macrolides in clinical practice are also covered. This book is designed to appeal to both the basic and applied research communities interested in microbiology, bacteriology, and antibiotic/antifungal research and treament.