Environmental Dna

Environmental DNA (eDNA) refers to DNA that can be extracted from environmental samples (such as soil, water, feces, or air) without the prior isolation of any target organism. The analysis of environmental DNA has the potential of providing high-throughput information on taxa and functional genes in a given environment, and is easily amenable to the study of both aquatic and terrestrial ecosystems. It can provide an understanding of past or present biological communities as well as their trophic relationships, and can thus offer useful insights into ecosystem functioning. There is now a rapidly-growing interest amongst biologists in applying analysis of environmental DNA to their own research. However, good practices and protocols dealing with environmental DNA are currently widely dispersed across numerous papers, with many of them presenting only preliminary results and using a diversity of methods. In this context, the principal objective of this practical handbook is to provide biologists (both students and researchers) with the scientific background necessary to assist with the understanding and implementation of best practices and analyses based on environmental DNA.

Environmental DNA (eDNA) refers to DNA that can be extracted from environmental samples (such as soil, water, feces, or air) without the prior isolation of any target organism. The analysis of environmental DNA has the potential of providing high-throughput information on taxa and functionalgenes in a given environment, and is easily amenable to the study of both aquatic and terrestrial ecosystems. It can provide an understanding of past or present biological communities as well as their trophic relationships, and can thus offer useful insights into ecosystem functioning. There is nowa rapidly-growing interest amongst biologists in applying analysis of environmental DNA to their own research. However, good practices and protocols dealing with environmental DNA are currently widely dispersed across numerous papers, with many of them presenting only preliminary results and using adiversity of methods. In this context, the principal objective of this practical handbook is to provide biologists (both students and researchers) with the scientific background necessary to assist with the understanding and implementation of best practices and analyses based on environmentalDNA.

This book comprehensively discusses our current understanding of the role and biological mechanisms of horizontal transfer of genetic elements in the environment, which has been important in the evolution of prokaryotes (archaea and bacteria). Horizontal transfer of genetic elements generates variations of prokaryotes and their genomes. Comparative studies of genomes revealed that it frequently occurred during archaeal and bacterial evolution. The book introduces a variety of studies related to horizontal gene transfer, gene silencing, plasmids, phages, transposons, and the emergence of microbes that degrade man-made xenobiotics and have antimicrobial resistance. Written by leading researchers in DNA traffic, the book is a valuable guide to horizontal transfer for both young scientists and experts in the field.

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

This detailed volume provides an overview of recent advances in the application of genomic technologies in several domains of marine biology, raising awareness of various DNA- and RNA-based technologies. Genomic methods are essential in identifying previously undetected taxonomic (e.g. DNA barcoding), genetic (e.g. sequencing), and functional (e.g. gene expression, analysis of metabolites) diversity, as shown in the chapters of this book, with sections focusing on next generation sequencing (NGS) technologies, bioinformatics in marine genomics research, marine biotechnology, as well as a variety of methods successfully applied in fish. Written for the highly successful 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. Authoritative and practical, Marine Genomics: Methods and Protocols highlights the utility of numerous lab protocols and their potential to provide deeper insight into physiological and ecological mechanisms in marine life.

Bringing together the latest methodological and scientific progress in the various research areas in the field of Environmental Genomics, this book discusses the characterization of the structure and dynamics of life, the study of the evolution and adaptation of genes and genomes, the analysis of degraded and/or old DNA, and the functional and genomic ecology of populations and communities. It also considers access to the production and sharing of NGS data and the quality of this data. As the product of the collective discussion of the active French scientific community, the book presents not only the latest technologies in the development of new sequencing methods, but also the resulting issues, challenges and prospects, in order to identify those aspects with the greatest potential for modeling and exploring the function of ecosystems. Includes recent updates from the field of environmental genomics Provides details of advances of methods and perspectives of their use Contains a multidisciplinary overview of the environmental sciences including taxonomy, ecology, evolution, and diversity Focuses on the impact of recent technology advances in high-throughput sequencing