Microbial Systematics

This book presents recent scientific investigations in microbial ecology and systematics. Advanced microbial science investigations employ the latest technologies for research in microbiology and microbial applications. The book has complete information on classical microbiology techniques for assessment of the composition of microbial diversity assessment, advancement in next-generation technology, advantages of microbial products in sustainable developments and their application for societal benefits. Current research on microorganisms is presented as a perfect book for studies on "Microbial Systematics". This book will serve as an important resource for practising research and review for the scientific community.

Bacterial taxonomy as a specialized discipline is practised by a minority but the applications of taxonomy are important to most, if not all microbiologists. It is the implementation of taxonomic ideas and practises which gives rise to identification and typing systems, procedures for the analysis and characterization of biodiversity, hypotheses about the evolution of micro-organisms, and improved procedures for the isolation and implementation of bacteria in biotechnological processes. Without taxonomic theory providing a sound basis to these many facets of microbiology there would be severe problems faced by many scientists working with micro-organisms. Taxonomy comprises three sequential but independent processes; classification, nomenclature and identification. The first two stages are the prime concern of the specialist taxonomist but the third stage should result in identification schemes of value to all microbiologists. As the classification and identification of micro-organisms improves, largely due to the introduction of new technologies, so does its contribution to the subject as a whole. It therefore seemed timely to hold a conference in the autumn of 1993 devoted to microbial identification. Such a topic could not be addressed without some reference to the enabling discipline of classification, but the principal aims were to assess improvements in identification and typing and how these were benefiting microbiological topics ranging from ecological and biotechnological studies of extremophilic bacteria to the use of pyrolysis mass spectrometry in epidemiology. The meeting, which was held in Granada, Spain, was supported by FEMS (FEMS Symposium No.

Methods in microbial systematics have developed and changed significantly in the last 40 years. This has resulted in considerable change in both the defining microbial species and the methods required to make reliable identifications. Developments in information technology have enabled ready access to vast amounts of new and historic data online. Establishing both the relevance, and the most appropriate use, of this data is now a major consideration when undertaking identifications and systematic research. This book provides some insights into how current methods and resources are being used in microbial systematics, together with some thoughts and suggestions as to how both methodologies and concepts may develop in the future.

Modern approaches to microbial classification and identification, particularly those based on nucleic acid analysis, have raised the awareness and interest of microbiologists in systematics during the past decade. The extended scope of the subject has revolutionized microbial ecology with the demonstration of uncultivable microorganisms as a major component of the biosphere and evolution, with the ribosomal RNA phylogenetic tree as the basis of current classifications. However, advances in microbial systematics have also had enormous impact on other, diverse aspects of microbiology such as animal pathogenicity, plant-microbe interactions and relationships with food. In this book, we survey and discuss in depth the contribution of modern taxonomic approaches to our understanding of the microbiology of these various systems. The book does not concentrate on methods - these have been well reported elsewhere - instead it provides a unique insight into the application and value of modern systematics in diverse branches of microbiology. It will be of value to microbiologists at both research and technical levels who need to appreciate the range of organisms with which they work and the diversity within them. It will also be of value to teachers and students of microbiology courses who want to understand how systematics can enhance microbiology beyond the routine of classification, nomenclature, and identification.

Computer-Assisted Bacterial Systematics examines the theoretical basis of numerical taxonomy and its impact on microbial classification and identification. In addition to the principles of numerical taxonomy, computer-assisted identification and the stability of classifications are discussed, along with cladistics and the evolution of proteins. The impact of computer-assisted methods on the systematics of different bacteria and on the description of microbial populations in natural habitats is also considered. Comprised of 16 chapters, this book begins with an introduction to the origins of modern numerical taxonomy, with emphasis on the collaboration between P. H. A. Sneath and R. R. Sokal as well as the controversy concerning optimality criteria in numerical taxonomic research. Subsequent chapters deal with cladistics and the evolution of proteins; computer-assisted analysis of data from cooperative studies on mycobacteria; numerical analysis of various types of chemical data using multivariate statistics; and the value of non-hierarchical methods in bacterial taxonomy. The final chapter considers the future of numerical taxonomy and the shape of things to come. This monograph will be of interest to students, practitioners, and researchers in fields ranging from microbiology to biochemistry and bacteriology.

This second edition of Modern Bacterial Taxonomy has been completely revised and expanded to include detailed coverage of molecular systematics including relevant aspects of nucleic acid sequences, the construction of phylogenetic trees, typing of bacteria by restriction fragment length polymorphisms, DNA hybridization probes and the use of the polymerase chain reaction in bacterial systematics.

The great diversity of microbial life is the remaining major reservoir of unknown biological diversity on earth. To understand this vast, but largely unperceived diversity with its untapped genetic, enzymatic and industrial potential, microbial systematics is undergoing a revolutionary change in its approach to describe novel taxa based on genomic/envirogenomic information. The characterization of an organism is no longer bounded by methodological barriers, and it is now possible to fully sequence the whole genome of a strain to study individual genes, or to examine the genetic information by using different techniques. In fact, application of genomics is helping not only to provide a better understanding of the boundaries of genera and higher levels of classification, but also to refine our definition of the species concept. In addition, increased understanding of phylogeny is allowing to predict the genetic potential of microorganisms for biotechnological applications and adaptation to environmental changes. The present Research Topic on “Microbial Taxonomy, Phylogeny and Biodiversity” compiles a collection of papers covering the use of genomic sequence data in microbial taxonomy and systematics, including evolutionary relatedness of microorganisms; application of comparative genomics in systematic studies; or metagenomic approaches for biodiversity studies. We hope that this eBook incentives and encourages researchers for future discussions on microbial taxonomy and phylogenetics.

This book provides microbiologists with a comprehensive treatment of concepts, ideas, and methods that make up the subject of modern bacterial systematics. It includes not only traditional numerical and chemotaxonomic methods, but also full coverage of molecular systematics. The book is divided into three sections - classification, nomenclature, and identification. The authors are world leaders in the field and many are involved in the "Bergey's manual," which is the bible of the field. Key Features * Provides microbiologists with a comprehensive treatment of the concepts ideas and methods that make up the subject of modern bacterial systematics. * Includes not only traditional numerical and chemotaxonomic methods but also full coverage of molecular systamatics. * Three sections included are: classification, nomenclature and identification. * The authors are world leaders in this subject - many are involved in the "Bergey's manual" which is the bible of the field.