Metagenomics is one of the fastest advancing fields in biology. By permitting access to the genomes of entire communities of bacteria, viruses, and fungi - otherwise inaccessible - metagenomics is extending our comprehension of the diversity, ecology, evolution, and functioning of the microbial world, as well as contributing to the emergence of new applications in many different areas. The continual and dynamical development of faster sequencing techniques, together with the advancement of methods to cope with the exponentially increasing amount of data generated, are expanding our capacity for the analysis of microbial communities from an unlimited variety of habitats and environments. The synergism with the new emerging omics approaches is showing the path to functional metagenomics and to adopting integrative, wider viewpoints, like systems biology. This book covers the most innovative and recent advances in theoretical, methodological, and applied areas of metagenomics. The topics covered include: metagenomics integration with complementary technologies * bacterial genealogy * viral metagenomics * the regulation of prokaryotic communities * functional metagenomics * systems biology * next-generation sequencing * stable isotope probing * DNA sequencing of uncultured microbes * cyberinfrastructure resource * identification of novel viruses * metagenomics of fungal communities * the human microbiome * microbial bioremediation * metagenomic enzyme discovery * quorum-sensing * plant-pathogen interactions * metagenomics of belowground microbial communities. The book is aimed at researchers and environmental managers involved in metagenomics, students starting research in this field, and teachers interested in the new developments.

Metagenomics is a rapidly growing field of research that has had a dramatic effect on the way we view and study the microbial world. By permitting the direct investigation of bacteria, viruses, and fungi, irrespective of their culturability and taxonomic identities, metagenomics has changed microbiological theory and methods and has also challenged the classical concept of species. This new field of biology has proven to be rich and comprehensive and is making important contributions in many areas including ecology, biodiversity, bioremediation, bioprospection of natural products, and medicine. This book addresses, in a coherent manner, the diverse and multiple aspects of metagenomics and the multiplicity of its potential applications. Renowned authors from around the world have contributed chapters covering the new theoretical insights, the more recent applications, and the dynamically developing methods of data acquisition and analysis. Topics include: conceptual frameworks * tools and methods * integration of complementary approaches * horizontal gene transfer * analysis of complex microbial communities * public data resources * plant-microbe interactions * bioremediation * industrial bioproducts * archaeal metagenomics * bioprospecting novel genes * the human microbiome * and philosophical themes in metagenomics. The book is essential reading for all researchers currently performing metagenomics studies and it is highly recommended for all students and scientists wishing to increase their understanding of this field.

The nitrogen (N) cycle is one of the most important nutrient cycles on the planet, and many of its steps are performed by microbial organisms. During the cycling process, greenhouse gases are formed, including nitrous oxide and methane. In addition, the use of nitrogen fertilizers increases freshwater nitrate levels, causing pollution and human health problems. A greater knowledge of the microbial communities involved in nitrogen transformations is necessary to understand and counteract nitrogen pollution. This book - written by renowned researchers who are specialized in the most relevant and emerging topics in the field - provides comprehensive information on the new theoretical, methodological, and applied aspects of metagenomics and other 'omics' approaches used to study the microbial N cycle. The book provides a thorough account of the contributions of metagenomics to microbial N cycle background theory. It also reviews state-of-the-art investigative methods and explores new applications in water treatment, agricultural practices, climate change, among others. The book is recommended for microbiologists, environmental scientists, and anyone interested in microbial communities, metagenomics, metatranscriptomics, and metaproteomics of the microbial N cycle.