Microbial Genetics Applied To Biotechnology

This book describes techniques of microbial genetics and how they may be applied to biotechnology. The text is concerned largely with the application of these techniques to microbial technology. We have therefore utilised illustrative material that is given in our own courses in applied micro biology. The book assumes in the reader a basic knowledge of microbial will prove useful to under genetics and industrial microbiology. We hope it graduates, postgraduates and others taking courses in applied micro biology. We would like to thank various colleagues, including John Carter, Julian Davies, Gordon Dougan, David Hopwood, Gwyn Humphreys, Alan McCarthy, David O'Connor, Tony Hart, Steve Oliver, Roger Pickup, Hilary Richards, Bob Rowlands, David Sherratt, Peter Strike, Richard Sykes and Liz Wellington, all of whom provided information at various stages during the writing of this book. Many thanks are also due to Linda Marsh for patiently typing the many drafts of the manuscript. 1 Introduction Natural genetic variation has always been exploited by man to improve the properties of microbial strains. Spontaneous mutations that arise in micro bial populations and that have properties advantageous to man have been gradually selected over centuries of use. However, it is only since the development of modem genetic techniques that more rational approaches have been possible. Such newer technologies have permitted the tailoring of microorganisms, plant or animal cells to manufacture specific products of commercial or social benefit and to manage the environment.

This book describes techniques of microbial genetics and how they may be applied to biotechnology. The text is concerned largely with the application of these techniques to microbial technology. We have therefore utilised illustrative material that is given in our own courses in applied micro biology. The book assumes in the reader a basic knowledge of microbial will prove useful to under genetics and industrial microbiology. We hope it graduates, postgraduates and others taking courses in applied micro biology. We would like to thank various colleagues, including John Carter, Julian Davies, Gordon Dougan, David Hopwood, Gwyn Humphreys, Alan McCarthy, David O'Connor, Tony Hart, Steve Oliver, Roger Pickup, Hilary Richards, Bob Rowlands, David Sherratt, Peter Strike, Richard Sykes and Liz Wellington, all of whom provided information at various stages during the writing of this book. Many thanks are also due to Linda Marsh for patiently typing the many drafts of the manuscript. 1 Introduction Natural genetic variation has always been exploited by man to improve the properties of microbial strains. Spontaneous mutations that arise in micro bial populations and that have properties advantageous to man have been gradually selected over centuries of use. However, it is only since the development of modem genetic techniques that more rational approaches have been possible. Such newer technologies have permitted the tailoring of microorganisms, plant or animal cells to manufacture specific products of commercial or social benefit and to manage the environment.

In accordance with its predecessor, the completely revised and expanded Second Edition of Modern Microbial Genetics focuses on how bacteria and bacteriophage arrange and rearrange their genetic material through mutation, evolution, and genetic exchange to take optimal advantage of their environment. The text is divided into three sections: DNA Metabolism, Genetic Response, and Genetic Exchange. The first addresses how DNA replicates, repairs itself, and recombines, as well as how it may be manipulated. The second section is devoted to how microorganisms interact with their environment, including chapters on sporulation and stress shock, and the final section contains the latest information on classic exchange mechanisms such as transformation and conjugation. Chapters include: * Gene Expression and Its Regulation * Single-Stranded DNA Phages * Genetic Tools for Dissecting Motility and Development of Myxococcus xanthus * Molecular Mechanism of Quorum Sensing * Transduction in Gram-Negative Bacteria * Genetic Approaches in Bacteria with No Natural Genetic Systems The editors also cultivate an attention to global regulatory systems throughout the book, elucidating how certain genes and operons in bacteria, defined as regulons, network and cooperate to suit the needs of the bacterial cell. With clear appreciation for the impact of molecular genomics, this completely revised and updated edition proves that Modern Microbial Genetics remains the benchmark text in its field.

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.

Writing a textbook on microbial genetics in about 200 pages was un doubtedly a difficult task, but I have been encouraged by the response from both students and lecturers to the first edition. The requirement for a second edition is also a measure of the need for such a book. My experience as a lecturer has shown that what is needed first is an intelligible framework which can be read in a reasonable period of time. Armed with these principles, a student can then go to reviews and the original literature with a reasonable chance of understanding the jargon and the details. Molecular genetics is now so well advanced that it is easy to lose track of the purpose of a set of experiments in the wealth of sequence data and complex interactions. I have therefore kept the same format for this edition with a well-illustrated text giving original papers, popular reviews, monographs and detailed reviews to enable the student to take the subject further as required.

The revision of this classic textbook by David Freifelder has been rewritten and updated to include the numerous and recent advances in microbial genetics. The basic format, organization and style of the first edition has been retained.