This book describes modern biophysical techniques that enable us to understand and examine dynamic processes of infection at the molecular level. Cutting-edge research articles, laboratory protocols, case studies and up-to-date reviews cover topics such as single-molecule observation of DNA replication repair pathways in E. coli; evolution of drug resistance in bacteria; restriction enzymes as barriers to horizontal gene transfer in Staphylococcus aureus; infectious and bacterial pathogen biofilms; killing infectious pathogens through DNA damage; bacterial surfaces in host-pathogen interactions; bacterial gene regulation by riboswitches; transcription regulation in enterobacterial pathogens; the bacterial flagellar motor; initial surface colonization by bacteria; Salmonella Typhi host restrictions; as well as monitoring proton motive force in bacteria; microbial pathogens using digital holography; mathematical modelling of microbial pathogen motility; neutron reflectivity in studying bacterial membranes; force spectroscopy in studying infection and 4D multi-photon imaging to investigate immune responses. The focus is on the development and application of complex techniques and protocols at the interface of life sciences and physics, which increase the physiological relevance of biophysical investigations.

The book contains recent developments and contemporary research in mathematical analysis and in its application to problems arising from the biological and physical sciences. The book is of interest to readers who wish to learn of new research in such topics as linear and nonlinear analysis, mathematical biology and ecology, dynamical systems, graph theory, variational analysis and inequalities, functional analysis, differential and difference equations, partial differential equations, approximation theory, and chaos. All papers were prepared by participants at the International Conference on Recent Advances in Mathematical Biology, Analysis and Applications (ICMBAA-2015) held during 4-6 June 2015 in Aligarh, India. A focal theme of the conference was the application of mathematics to the biological sciences and on current research in areas of theoretical mathematical analysis that can be used as sophisticated tools for the study of scientific problems. The conference provided researchers, academicians and engineers with a platform that encouraged them to exchange their innovative ideas in mathematical analysis and its applications as well as to form interdisciplinary collaborations. The content of the book is divided into three parts: Part I contains contributions from participants whose topics are related to nonlinear dynamics and its applications in biological sciences. Part II has contributions which concern topics on nonlinear analysis and its applications to a variety of problems in science, engineering and industry. Part III consists of contributions dealing with some problems in applied analysis.

Ein biographischer Abriss zu Robert Koch, dem Begrunder der Bakteriologie in Deutschland. Der Band wertet den in Vergessenheit geratenen Nachlass aus und ermoeglicht eine neue Sicht auf die Person und den Arbeitsstil des Nobelpreistragers. Er enthalt zudem erstmals einen vollstandigen Katalog der Dokumente zum Lebenslauf und damit verbundener Auszeichnungen, Arbeitsmaterialien und der Briefe Robert Kochs. Fur Bibliothekare und Archive ist das Werk auch wegen der Bestandsnachweise und Erschliessungskriterien ein unverzichtbares Arbeitsmittel.

William Watson Cheyne (1852-1932), a surgeon by training and a student of Joseph Lister, was a prominent British bacteriologist who published 60 papers and 13 monographs from 1879 to 1927. A proponent of the idea that bacteriology and medicine were interdependent disciplines, he investigated the causes and treatment of wound infections, tuberculosis, cholera, tetanus and gangrene. In 1897, he organized an historical outline of 19th century bacteriology in five landmark periods of discovery, each defined by the work of an influential figure. This study documents his contributions to the history of microbiology and describes his activities as a laboratory investigator, clinician, surgeon, translator, editor and educator.

The present volume by the author is based on the outcome of extensive explorations in the Himalayas for more than a decade. It incorporates the original research findings along with that based on literature survey. It is intended to provide a comprehensive account of an important group of fungi which has a direct bearing on wood industry and forest ecosystem besides commercial application in bioremediation and pollution control. It is the first step in providing the mycologists with consolidated, systematically up-to-date and illustrative monograph of wood-rotting fungi of Himalayas. Every year the students of the post graduate colleges and universities particularly Indian sub-continent go in for fungal forays to collect fungi which forms part of their course curriculum. This book will serve as a field manual for identification. The book has more than 240 color photographs and 123 plates of camera lucida drawings covering all the fungi which have been reported till-to-date from the study area.

This book describes the various applications of microorganisms in improving plant growth, health and the efficiency of phytochemical production. The chapters trace topics such as the role of PGPRs in improving salt stress and heavy metal tolerance in plants; the prevention and control of plant diseases; boosting soil fertility and agriculture productivity; the induction of secondary metabolite biosynthesis in medicinal and aromatic plants; the enhancement of phytochemical levels, and the action mechanisms, diversity and characterization of PGPRs. The reviews will be of interest for scientists in the fields of agriculture, microbiology, soil biology, plant breeding and herbal medicinal products.

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.

Plants form mutualistic association with various microorganisms, particularly in the rhizosphere region. The association benefits both the partners in a number of ways. A single plant can support the growth of diverse microbes and in reciprocation these microbes help the plant in several ways. A great deal of knowledge is now available on the mechanisms of action of plant growth promoting microbes in forming association with their partner plant and benefitting it. With ever increasing population and to achieve food security it has become utmost necessary to utilize these friendly microbes to enhance the crop yield and quality in an ecofriendly and sustainable manner. We already know about the huge negative impact of chemicals used in agriculture on the humans and the ecosystems as whole. ‘Plant Microbes Symbiosis – Applied Facets’ provides a comprehensive knowledge on practical, functional and purposeful utility of plant-microbe interactions. The book reviews the utilization of beneficial microbes for crop yield enhancement and protection against diseases caused by phytopathogens and nutrient deficiencies. The tome also reviews the utility of plant growth promoting microbes in helping the plants to deal with abiotic stresses imposed by climate change and anthropogenic activities. The book showcases how plant-microbe interactions are or can be utilized for reclamation of stressed soils and degradation of pollutants in a most effective and environment friendly manner. It also ascertains the reasons for the below par performance of the microbial based inoculants. The utilization of biotechnological tools for development of next generation bioformulations to combat the new challenges and overcome past hurdles has been discussed. This wonderful association between plants and microbes if used properly will not only enhance the crop yields and reclaim barren lands but also make our planet a better place to live on for all of its habitants.

The aim of this book is to provide readers with a wide overview of the main healthcare-associated infections caused by bacteria and fungi able to grow as biofilm. The recently acquired knowledge on the pivotal role played by biofilm-growing microorganisms in healthcare-related infections has given a new dynamic to detection, prevention and treatment of these infections in patients admitted to both acute care hospitals and long-term care facilities. Clinicians, hygienists and microbiologists will be updated by leading scientists on the state-of-art of biofilm-based infections and on the most innovative strategies for prevention and treatment of these infections, often caused by emerging multidrug-resistant biofilm-growing microorganisms.

This book provides readers with information on the factors underlying the emergence of infectious diseases originating in animals and spreading to people. The One Health concept recognizes the important links between human, animal, and environmental health and provides an important strategy in epidemic mitigation and prevention. The essential premise of the One Health concept is to break down the silos among the different health professions and promote transdisciplinary collaborations. These concepts are illustrated with in-depth analyses of specific zoonotic agents and with examples of the successes and challenges associated with implementing One Health. The book also highlights some of the challenges societies face in confronting several specific zoonotic diseases. A chapter is included on comparative medicine to demonstrate the broad scope of the One Health concept. Edited by a team including the One Health Initiative pro bono members, the book is dedicated to those studying zoonotic diseases and comparative medicine in both human and veterinary medicine, to those involved in the prevention and control of zoonotic infections and to those in the general public interested in the visionary field of One Health.

This book is devoted to nanomicrobiology and the nanosystems of bacteria. The initial chapter discusses some of the controversies in the geochemical and biomedical fields associated with the reports of nanobacteria in the environment. Current knowledge of several internal and surface structures of bacteria is addressed in this book. Included are chapters discussing carboxysomes, S-layers, gliding motility of bacteria, and aggregation of iron to produce nano-magnetite. Information about the activities of outer membrane vesicles produced by Gram-negative bacteria is discussed as a benefit to bacteria that produce it and some potential industrial applications are presented. A broad review of bacterial-mineral interactions is addressed in a chapter of metallic nanoparticles and colloids production by bacterial reduction of soluble redox active elements. The structures of bacterial nanowires are discussed and their application in extra-cellular electron transport is reviewed. Nanomotor activities of bacteria are discussed as pertains to the mechanics of flagellar rotation, production of energy by ATP synthase, DNA packing, and translocation of proteins across membranes by secretion systems. The rapidly evolving field of nanosystem technology is embracing many areas, and it is the hope that this book will stimulate the use of bacterial nanostructures for future developments in nanotechnology.

Laboratory Techniques in Plant Bacteriology is ideal for scientists and students who seek a career in plant pathogenic bacteria. This book contains 41 chapters comprising practicable techniques from isolation of bacterial plant pathogens to their identification up to species and race/biotype level. It includes identification protocols of morphological, biochemical, immunological, and molecular-based techniques. This book comprises all technological aspects of plant bacteriological studies. Its content is ideal for graduate students and research scholars including bacteriological professionals or technicians. The book ultimately provides working technologies useful for controlling bacterial disease pathogens.

Quorum sensing (QS) describes a chemical communication behavior that is nearly universal among bacteria. Individual cells release a diffusible small molecule (an autoinducer) into their environment. A high concentration of this autoinducer serves as a signal of high population density, triggering new patterns of gene expression throughout the population. However QS is often much more complex than this simple census-taking behavior. Many QS bacteria produce and detect multiple autoinducers, which generate quorum signal cross talk with each other and with other bacterial species. QS gene regulatory networks respond to a range of physiological and environmental inputs in addition to autoinducer signals. While a host of individual QS systems have been characterized in great molecular and chemical detail, quorum communication raises many fundamental quantitative problems which are increasingly attracting the attention of physical scientists and mathematicians. Key questions include: What kinds of information can a bacterium gather about its environment through QS? What physical principles ultimately constrain the efficacy of diffusion-based communication? How do QS regulatory networks maximize information throughput while minimizing undesirable noise and cross talk? How does QS function in complex, spatially structured environments such as biofilms? Previous books and reviews have focused on the microbiology and biochemistry of QS. With contributions by leading scientists and mathematicians working in the field of physical biology, this volume examines the interplay of diffusion and signaling, collective and coupled dynamics of gene regulation, and spatiotemporal QS phenomena. Chapters will describe experimental studies of QS in natural and engineered or microfabricated bacterial environments, as well as modeling of QS on length scales spanning from the molecular to macroscopic. The book aims to educate physical scientists and quantitative-oriented biologists on the application of physics-based experiment and analysis, together with appropriate modeling, in the understanding and interpretation of the pervasive phenomenon of microbial quorum communication.

Identifying Helicobacter infection as the leading cause of peptic ulcer disease and gastric cancer has dramatically altered the treatment of these disease states. Over the last several decades, scientists have come to understand that the interplay between the bacteria, the host, and the environment all contribute to the clinical outcome of infection. In Helicobacter Species: Methods and Protocols, expert researchers in the field detail many of the methods and which are now commonly used to study Helicobacter infection. These include protocols and methods that have evolved over time, and standards across the field have been established which are essential for optimal outcomes and to allow comparison of data across different laboratories. 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 laboratory protocols, and key tips on troubleshooting and avoiding known pitfalls. Authoritative and practical, Helicobacter Species: Methods and Protocols seeks to aid scientists in further study of this crucially important research into Helicobacter research.

The discovery that most of the chronic infections in humans, including the oral, lung, vaginal and foreign body-associated infections, are biofilm-based, has prompted the need to design new and properly focused preventive and therapeutic strategies for these diseases. Microbial Biofilms: Methods and Protocols provides a detailed description of the currently available methods and protocols to investigate bacterial and fungal biofilms, exhaustively illustrated and critically annotated in 25 chapters written by authors well known for their experience in the respective fields. The book has joined together microbiologists and specialists in infectious diseases, hygiene and public health involved in exploring different aspects of microbial biofilms as well as in designing new methods and/or developing innovative laboratory protocols. Written in the 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 protocols and notes on troubleshooting and avoiding known pitfalls. Authoritative and easily accessible, Microbial Biofilms: Methods and Protocols presents readers with the most established and validated experimental procedures to investigate microbial biofilms.

Corynebacterium diphtheriae is the classical etiological agent of diphtheria and the type strain of the genus Corynebacterium. While diphtheria of the respiratory tract became rare with the introduction of vaccination programs in industrialized countries, even today several thousand cases per year are reported to the World Health Organization. This shows that diphtheria is not completely eradicated and that reservoirs exist. The book summarizes the latest advances made in understanding C. diphtheriae and the closely related species Corynebacterium ulcerans and Corynebacterium pseudotuberculosis. Topics addressed are genomics of toxigenic corynebacteria, host-pathogen-interaction, detection, surveillance and treatment as well as application aspects.

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.

This book brings together many of the world's leading experts in the fields of Antarctic terrestrial soil ecology, providing a comprehensive and completely up-to-date analysis of the status of Antarctic soil microbiology. Antarctic terrestrial soils represent one of the most extreme environments on Earth. Once thought to be largely sterile, it is now known that these diverse and often specialized extreme habitats harbor a very wide range of different microorganisms. Antarctic soil communities are relatively simple, but not unsophisticated. Recent phylogenetic and microscopic studies have demonstrated that these communities have well established trophic structuring and play a significant role in nutrient cycling in these cold and often dry desert ecosystems. They are surprisingly responsive to change and potentially sensitive to climatic perturbation. Antarctic terrestrial soils also harbor specialized 'refuge'habitats, where microbial communities develop under (and within) translucent rocks. These cryptic habitats offer unique models for understanding the physical and biological 'drivers' of community development, function and evolution.

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 (TM) 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.

Salmonella: Methods and Protocols, Second Edition expands upon the previous edition with current, detailed methods on different aspects and landmarks advancing knowledge on salmonella research. With new chapters on molecular assays for detection, identification and serotyping of salmonella, quantitative proteomic identification of host factors involved in salmonella infection, determination of antimicrobial resistance in salmonella, site-directed mutagenesis, chromosomal gene analysis, development of bacterial nanoparticle vaccine, attachment of nanoparticle cargo to biotinylated salmonella for combination bacteriotherapy against tumors, various microscopy methods to analyze salmonella interaction with host cells, in vitro modeling of gallbladder-associated salmonella colonization, and analysis of salmonella phages and prophages. 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, Salmonella: Methods and Protocols, Second Edition present methods that are of value to investigators in the salmonella field.

Part 1: Physiology, Evolution and Ecology: 1 An Overview of Purple Bacteria: Systematics, Physiology, and Habitats.-2 New Light on Aerobic Anoxygenic Phototrophs.-3 Evolutionary Relationships Among Purple Photosynthetic Bacteria and the Origin of Proteobacterial Photosynthetic Systems.- Part 2: Biosynthesis of Pigments, Cofactors and Lipids: 4 Biosynthesis of Bacteriochlorophylls in Purple Bacteria.-5 Vitamin B12 (Cobalamin) Biosynthesis in the Purple Bacteria.- 6 Distribution and Biosynthesis of Carotenoids.-7 Membrane Lipid Biosynthesis in Purple Bacteria.-Part 3: Antenna Complexes: Structure, Function and Organization: 8 Peripheral Complexes of Purple Bacteria.-9 Reaction Center-Light-Harvesting Core Complexes of Purple Bacteria.-10 Structure-Function Relationships in Bacterial Light-Harvesting Complexes Investigated by Reconstitution Techniques.-11 Spectroscopic Properties of Antenna Complexes from Purple Bacteria.-12 Energy Transfer from Carotenoids to Bacteriochlorophylls.-13 Spectroscopy and Dynamics of Excitation Transfer and Trapping in Purple Bacteria.-14 Organization and Assembly of Light-Harvesting Complexes in the Purple Bacterial Membrane.-15 From Atomic-level Structure to Supramolecular Organization in the photosynthetic Unit of Purple Bacteria.-Part 4: Reaction Centre Structure and Function: 16 Structural Plasticity of Reaction Centers from Purple Bacteria.-17 Structure and Function of the Cytochrome c2: Reaction Center Complex from Rhodobacter sphaeroides.-18 Directed Modification of Reaction Centers from Purple Bacteria.-19 Mechanism of Charge Separation in Purple Bacterial Reaction Centers.-20 The Acceptor Quinones of Purple Photosynthetic Bacteria- Structure and Spectroscopy.-Part 5: Cyclic Electron Transfer Components and Energy Coupling Reactions: 21 Biogenesis of c-type Cytochromes and Cytochrome Complexes.-22 Structural and Mutational Studies of the Cytochrome bc1 Complex.-23 The Cytochrome bc1and Related bc Complexes: The Rieske/Cytochrome b Complex as the Functional Core of a Central Electron/Proton Transfer Complex.-24 Proton Translocation and ATP Synthesis by the FoF1-ATPase of Purple Bacteria.-25 Proton-Translocating Transhydrogenase in Photosynthetic Bacteria.-26 Functional Coupling Between Reaction Centers and Cytochrome bc1 Complexes.-Part 6: Metabolic Processes: 27 Respiration and Respiratory Complexes.- 28 Carbon Dioxide Metabolism and its Regulation in Nonsulfur Purple Photosynthetic Bacteria.- 29 Degradation of Aromatic Compounds by Purple Nonsulfur Bacteria.-30 Metabolism of Inorganic Sulfur Compounds in Purple Bacteria.-31 Dissimilatory and Assimilatory Nitrate Reduction in the Purple Photosynthetic Bacteria.-32 Swimming and Behavior in Purple Non-Sulfur Bacteria.-33 Metals and Metalloids in Photosynthetic Bacteria: Interactions, Resistance and Putative Homeostasis Revealed by Genome Analysis.-Part 7: Genomics, Regulation and Signalling:34 Purple Bacterial Genomics.- 35 Regulation of Gene Expression in Response to Oxygen Tension.-36 Regulation of Genes by Light.-37 Regulation of Hydrogenase Gene Expression.-38 Regulation of Nitrogen Fixation.-39 Regulation of the Tetrapyrrole Biosynthetic Pathway.-40 Bacteriophytochromes Control Photosynthesis in Rhodopseudomonas palustris.-41 Photoreceptor Proteins from Purple Bacteria.-Part 8: New Applications and Techniques: 42 Foreign Gene Expression in Photosynthetic Bacteria.-43 Assembly of Bacterial Light Harvesting Complexes on Solid Substrates.-44 Optical Spectroscopy of Individual Light-Harvesting Complexes from Purple Bacteria.-45 De novo Designed Bacteriochlorophyll-Binding Helix-Bundle Proteins.-46 Design and Assembly of Functional Light-Harvesting Complexes.-47 The Supramolecular Assembly of the Photosynthetic Apparatus of Purple Bacteria Investigated by High-Resolution Atomic Force Microscopy.-48 Protein Environments and Electron Transfer Processes Probed wit

Presenting the most up-to-date techniques for the detection, genotyping, and investigation of methicillin-resistant S. aureus (MRSA), this second edition of Methicillin-Resistant Staphylococcus aureus (MRSA) Protocols collects chapters that utilize the power of complete genomic sequences and advanced high-throughput technologies that have pushed this field to its present state. These enable the development of specific and rapid diagnosis methods, the investigation and elucidation of mechanisms of bacterial evolution to antibiotic resistance and pathogenicity, and the identification of novel targets to develop more potent therapeutic and/or preventive agents. Written for the Methods in Molecular Biology series, numerous 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 fully updated, Methicillin-Resistant Staphylococcus aureus (MRSA) Protocols, Second Edition serves as a key reference for researchers attempting to set up a new method to study MRSA or even for technicians and scientists working on other pathogens.

Biodegradative Bacteria highlights the novel nature of bacterial cell functions in the field of biodegradation by putting them into three parts: (1) Genetic and genomic systems, (2) Degradative enzyme systems, and (3) Bacterial behavior in natural environmental systems. The first part of the book includes cell functions as degradative machinery, genome systems for effective degradation, and the evolution of degradative systems by mobile genetic elements. The second part deals with the structure, function, evolution, diversity, and application of degradative and related enzymes. The third part presents cell or genomic behaviors of biodegradative bacteria in natural ecosystems. Bacterial metabolic capacity, which plays an important role in the global material cycle, contributes significantly to the buffering capacity for the huge and unintended release of various chemicals. Recently, however, the prosperity and globalization of material civilization has led not only to severe local contamination by hazardous chemicals, but also to continuous increment of contaminant concentrations worldwide. To solve such urgent global issues, bacterial functions that are involved in biodegradation of hazardous chemicals have been analyzed. The term "biodegradative bacteria" refers to those bacteria that have the ability to degrade such xenobiotic (man-made) and/or hazardous chemicals. Analyses of biodegradative bacteria include diverse areas of study, such as genetics, enzymology, genomics, cell physiology, ecology, and evolutionary biology. In other words, the targets investigated in research on biodegradative bacteria include single molecules, single cell systems, bacterial consortia (interaction with surrounding microorganisms), and interaction with surrounding biotic and abiotic materials. Such complexity makes the research on biodegradative bacteria difficult but quite interesting.

The aim of this book is to provide readers with a wide overview of the main healthcare-associated infections caused by bacteria and fungi able to grow as biofilm. The recently acquired knowledge on the pivotal role played by biofilm-growing microorganisms in healthcare-related infections has given a new dynamic to detection, prevention and treatment of these infections in patients admitted to both acute care hospitals and long-term care facilities. Clinicians, hygienists and microbiologists will be updated by leading scientists on the state-of-art of biofilm-based infections and on the most innovative strategies for prevention and treatment of these infections, often caused by emerging multidrug-resistant biofilm-growing microorganisms.

Described as the earliest, simplest life forms, with unlimited metabolic versatility, bacteria are ideally suited to answer some very fundamental questions on life and its processes. They have been employed in almost all fields of biological studies, including Genetics. The whole edifice of science of Genetics centers around three processes: the generation, expression, and transmission of biological variation, and bacteria offer immediate advantages in studying all the three aspects of heredity. Being haploid and structurally simple, it becomes easy to isolate mutations of various kinds and relate them to a function. The availability of such mutants and their detailed genetic and biochemical analyses lead to a gamut of information on gene expression and its regulation. While studying the transmission of biological variation, it is clear that unlike their eukaryotic counterpart, a more genetic approach needs to be employed. Transmission of genetic information in most eukaryotic organisms rests on sexual reproduction that allows the generation of genetically variable offspring through the process of gene recombination. Even though bacteria show an apparent preference for asexual reproduction, they too have evolved mechanisms to trade their genetic material. In fact, bacteria not only could acquire many genes from close relatives, but also from entirely distant members through the process of horizontal gene transfer. Their success story of long evolutionary existence will stand testimony to these mechanisms. While teaching a course on Microbial Genetics to the post-graduate students at Delhi University, it was realized that a book devoted to bacterial genetics may be very handy to the students, researchers, and teachers alike. A strong foundation in genetics also helps in comprehending more modern concepts of molecular biology and recombinant DNA technology, always a favorite with the students and researchers. Planning the format of the book, emphasis has been laid on the generation and transmission of biological variability. The omission of expression part is indeed intentional because lots of information is available on this aspect in any modern biology book. The contents are spread over seven chapters and the text is supported with figures/tables wherever possible. The endeavor has been to induce the readers to appreciate the strength of bacterial genetics and realize the contribution of these tiny organisms to the growth of biological sciences as a whole and genetics in particular.