Microbial Evolution

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Microbial Evolution

Howard Ochman
Microbial Evolution Book PDF

Author : Howard Ochman
Publisher : Unknown
Page : 0 pages
File Size : 54,8 Mb
Release : 2016
Category : Science
ISBN : 1621820378

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Microbial Evolution by Howard Ochman Pdf

Bacteria have been the dominant forms of life on Earth for the past 3.5 billion years. They rapidly evolve, constantly changing their genetic architecture through horizontal DNA transfer and other mechanisms. Consequently, it can be difficult to define individual species and determine how they are related. Written and edited by experts in the field, this collection from Cold Spring Harbor Perspectives in Biology examines how bacteria and other microbes evolve, focusing on insights from genomics-based studies. Contributors discuss the origins of new microbial populations, the evolutionary and ecological mechanisms that keep species separate once they have diverged, and the challenges of constructing phylogenetic trees that accurately reflect their relationships. They describe the organization of microbial genomes, the various mutations that occur, including the birth of new genes de novo and by duplication, and how natural selection acts on those changes. The role of horizontal gene transfer as a strong driver of microbial evolution is emphasized throughout. The authors also explore the geologic evidence for early microbial evolution and describe the use of microbial evolution experiments to examine phenomena like natural selection. This volume will thus be essential reading for all microbial ecologists, population geneticists, and evolutionary biologists.

Molecular Mechanisms of Microbial Evolution

Pabulo H. Rampelotto
Molecular Mechanisms of Microbial Evolution Book PDF

Author : Pabulo H. Rampelotto
Publisher : Springer
Page : 448 pages
File Size : 53,6 Mb
Release : 2018-10-12
Category : Science
ISBN : 9783319690780

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Molecular Mechanisms of Microbial Evolution by Pabulo H. Rampelotto Pdf

One of the most profound paradigms that have transformed our understanding about life over the last decades was the acknowledgement that microorganisms play a central role in shaping the past and present environments on Earth and the nature of all life forms. Each organism is the product of its history and all extant life traces back to common ancestors, which were microorganisms. Nowadays, microorganisms represent the vast majority of biodiversity on Earth and have survived nearly 4 billion years of evolutionary change. Microbial evolution occurred and continues to take place in a great variety of environmental conditions. However, we still know little about the processes of evolution as applied to microorganisms and microbial populations. In addition, the molecular mechanisms by which microorganisms communicate/interact with each other and with multicellular organisms remains poorly understood. Such patterns of microbe-host interaction are essential to understand the evolution of microbial symbiosis and pathogenesis.Recent advances in DNA sequencing, high-throughput technologies, and genetic manipulation systems have enabled studies that directly characterize the molecular and genomic bases of evolution, producing data that are making us change our view of the microbial world. The notion that mutations in the coding regions of genomes are, in combination with selective forces, the main contributors to biodiversity needs to be re-examined as evidence accumulates, indicating that many non-coding regions that contain regulatory signals show a high rate of variation even among closely related organisms. Comparative analyses of an increasing number of closely related microbial genomes have yielded exciting insight into the sources of microbial genome variability with respect to gene content, gene order and evolution of genes with unknown functions. Furthermore, laboratory studies (i.e. experimental microbial evolution) are providing fundamental biological insight through direct observation of the evolution process. They not only enable testing evolutionary theory and principles, but also have applications to metabolic engineering and human health. Overall, these studies ranging from viruses to Bacteria to microbial Eukaryotes are illuminating the mechanisms of evolution at a resolution that Darwin, Delbruck and Dobzhansky could barely have imagined. Consequently, it is timely to review and highlight the progress so far as well as discuss what remains unknown and requires future research. This book explores the current state of knowledge on the molecular mechanisms of microbial evolution with a collection of papers written by authors who are leading experts in the field.

Microbial Evolution and Co-Adaptation

Institute of Medicine,Board on Global Health,Forum on Microbial Threats
Microbial Evolution and Co Adaptation Book PDF

Author : Institute of Medicine,Board on Global Health,Forum on Microbial Threats
Publisher : National Academies Press
Page : 330 pages
File Size : 47,9 Mb
Release : 2009-05-10
Category : Science
ISBN : 9780309131216

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Microbial Evolution and Co-Adaptation by Institute of Medicine,Board on Global Health,Forum on Microbial Threats Pdf

Dr. Joshua Lederberg - scientist, Nobel laureate, visionary thinker, and friend of the Forum on Microbial Threats - died on February 2, 2008. It was in his honor that the Institute of Medicine's Forum on Microbial Threats convened a public workshop on May 20-21, 2008, to examine Dr. Lederberg's scientific and policy contributions to the marketplace of ideas in the life sciences, medicine, and public policy. The resulting workshop summary, Microbial Evolution and Co-Adaptation, demonstrates the extent to which conceptual and technological developments have, within a few short years, advanced our collective understanding of the microbiome, microbial genetics, microbial communities, and microbe-host-environment interactions.

Microbial Evolution

Robert Verne Miller,Martin J. Day
Microbial Evolution Book PDF

Author : Robert Verne Miller,Martin J. Day
Publisher : Unknown
Page : 398 pages
File Size : 40,6 Mb
Release : 2004
Category : Medical
ISBN : UOM:39015059118706

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Microbial Evolution by Robert Verne Miller,Martin J. Day Pdf

The authors seek to provide insight into the evolution and adaptation of bacteria as a means of understanding subdisciplines such as genetics, taxonomy, and physiology. Each chapter includes questions to stimulate discussion and speculation.

Microbial Evolution under Extreme Conditions

Corien Bakermans
Microbial Evolution under Extreme Conditions Book PDF

Author : Corien Bakermans
Publisher : Walter de Gruyter GmbH & Co KG
Page : 290 pages
File Size : 50,6 Mb
Release : 2015-03-10
Category : Nature
ISBN : 9783110340716

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Microbial Evolution under Extreme Conditions by Corien Bakermans Pdf

Today's microorganisms represent the vast majority of biodiversity on Earth and have survived nearly 4 billion years of evolutionary change. However, we still know little about the processes of evolution as applied to microorganisms and microbial populations. Microbial evolution occurred and continues to take place in a vast variety of environmental conditions that range from anoxic to oxic, from hot to cold, from free-living to symbiotic, etc. Some of these physicochemical conditions are considered "extreme", particularly when inhabitants are limited to microorganisms. It is easy to imagine that microbial life in extreme environments is somehow more constrained and perhaps subjected to different evolutionary pressures. But what do we actually know about microbial evolution under extreme conditions and how can we apply that knowledge to other conditions? Appealingly, extreme environments with their relatively limited numbers of inhabitants can serve as good model systems for the study of evolutionary processes. A look at the microbial inhabitants of today's extreme environments provides a snapshot in time of evolution and adaptation to extreme conditions. These adaptations manifest at different levels from established communities and species to genome content and changes in specific genes that result in altered function or gene expression. But as a recent (2011) report from the American Academy of Microbiology observes: "A complex issue in the study of microbial evolution is unraveling the process of evolution from that of adaptation. In many cases, microbes have the capacity to adapt to various environmental changes by changing gene expression or community composition as opposed to having to evolve entirely new capabilities." We have learned much about how microbes are adapted to extreme conditions but relatively little is known about these adaptations evolved. How did the different processes of evolution such as mutation, immigration, horizontal (lateral) gene transfer, recombination, hybridization, genetic drift, fixation, positive and negative selection, and selective screens contribute to the evolution of these genes, genomes, microbial species, communities, and functions? What are typical rates of these processes? How prevalent are each of these processes under different conditions? This book explores the current state of knowledge about microbial evolution under extreme conditions and addresses the following questions: What is known about the processes of microbial evolution (mechanisms, rates, etc.) under extreme conditions? Can this knowledge be applied to other systems and what is the broader relevance? What remains unknown and requires future research? These questions will be addressed from several perspectives including different extreme environments, specific organisms, and specific evolutionary processes.

Microbial Phylogeny and Evolution

Jan Sapp
Microbial Phylogeny and Evolution Book PDF

Author : Jan Sapp
Publisher : Oxford University Press on Demand
Page : 349 pages
File Size : 55,5 Mb
Release : 2005-03-03
Category : Science
ISBN : 9780195168778

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Microbial Phylogeny and Evolution by Jan Sapp Pdf

The extent of lateral gene transfer among diverse microbes has effectively broken down the concept of species when we seek to apply it to the microbial world. This book brings together workers to try to reach an accomodation and consensus on the outline of how cellular life has evolved.

Microcosmos

Lynn Margulis,Dorion Sagan
Microcosmos Book PDF

Author : Lynn Margulis,Dorion Sagan
Publisher : Univ of California Press
Page : 304 pages
File Size : 52,7 Mb
Release : 2023-04-28
Category : Science
ISBN : 9780520340510

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Microcosmos by Lynn Margulis,Dorion Sagan Pdf

"Microcosmos is nothing less than the saga of the life of the planet. Lynn Margulis and Dorion Sagan have put it all together, literally, in this extraordinary book, which is unlike any treatment of evolution for a general readership that I have encountered before. A fascinating account that we humans should be studying now for clues to our own survival."—From the Foreword by Dr. Lewis Thomas Microcosmos brings together the remarkable discoveries of microbiology in the later decades of the 20th century and the pioneering research of Dr. Margulis to create a vivid new picture of the world that is crucial to our understanding of the future of the planet. Addressed to general readers, the book provides a beautifully written view of evolution as a process based on interdependency and their interconnectedness of all life on the planet.

Microbial Ecology

J Vaun McArthur
Microbial Ecology Book PDF

Author : J Vaun McArthur
Publisher : Elsevier
Page : 432 pages
File Size : 51,9 Mb
Release : 2006-02-01
Category : Science
ISBN : 0080511546

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Microbial Ecology by J Vaun McArthur Pdf

Based on the thesis that insights into both evolution and ecology can be obtained through the study of microorganismsm, Microbial Ecology examines microbiology through the lens of evolutionary ecology. Measured from a microbial perspective, this text covers such topics as optimal foraging, genome, reduction, novel evolutionary mechanisms, bacterial speciation, and r and K selection. Numerous aspects of microbial existence are also discussed and include: species competition, predation, parasitism, mutualism, microbial communication through quorum sensing and other. The result is a context for understanding microbes in nature and a framework for microbiologists working in industry, medicine, and the environment. Applies evolutionary ecological concepts to microbes Addresses individual, population and community ecology Presents species concepts and offers insights on the origin of life and modern microbial ecology Examines topics such as species interactions, nutrient cycling, quorum sensing and cheating

The Social Biology of Microbial Communities

Institute of Medicine,Board on Global Health,Forum on Microbial Threats
The Social Biology of Microbial Communities Book PDF

Author : Institute of Medicine,Board on Global Health,Forum on Microbial Threats
Publisher : National Academies Press
Page : 633 pages
File Size : 45,9 Mb
Release : 2013-01-10
Category : Medical
ISBN : 9780309264327

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The Social Biology of Microbial Communities by Institute of Medicine,Board on Global Health,Forum on Microbial Threats Pdf

Beginning with the germ theory of disease in the 19th century and extending through most of the 20th century, microbes were believed to live their lives as solitary, unicellular, disease-causing organisms . This perception stemmed from the focus of most investigators on organisms that could be grown in the laboratory as cellular monocultures, often dispersed in liquid, and under ambient conditions of temperature, lighting, and humidity. Most such inquiries were designed to identify microbial pathogens by satisfying Koch's postulates.3 This pathogen-centric approach to the study of microorganisms produced a metaphorical "war" against these microbial invaders waged with antibiotic therapies, while simultaneously obscuring the dynamic relationships that exist among and between host organisms and their associated microorganisms-only a tiny fraction of which act as pathogens. Despite their obvious importance, very little is actually known about the processes and factors that influence the assembly, function, and stability of microbial communities. Gaining this knowledge will require a seismic shift away from the study of individual microbes in isolation to inquiries into the nature of diverse and often complex microbial communities, the forces that shape them, and their relationships with other communities and organisms, including their multicellular hosts. On March 6 and 7, 2012, the Institute of Medicine's (IOM's) Forum on Microbial Threats hosted a public workshop to explore the emerging science of the "social biology" of microbial communities. Workshop presentations and discussions embraced a wide spectrum of topics, experimental systems, and theoretical perspectives representative of the current, multifaceted exploration of the microbial frontier. Participants discussed ecological, evolutionary, and genetic factors contributing to the assembly, function, and stability of microbial communities; how microbial communities adapt and respond to environmental stimuli; theoretical and experimental approaches to advance this nascent field; and potential applications of knowledge gained from the study of microbial communities for the improvement of human, animal, plant, and ecosystem health and toward a deeper understanding of microbial diversity and evolution. The Social Biology of Microbial Communities: Workshop Summary further explains the happenings of the workshop.

Evolution of Microbial Life

Society for General Microbiology. Symposium,David McLean Roberts
Evolution of Microbial Life Book PDF

Author : Society for General Microbiology. Symposium,David McLean Roberts
Publisher : Cambridge University Press
Page : 318 pages
File Size : 43,6 Mb
Release : 1996-11-13
Category : Medical
ISBN : 0521564328

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Evolution of Microbial Life by Society for General Microbiology. Symposium,David McLean Roberts Pdf

This volume considers the evolution and diversification of early unicellular life.

Molecular Mechanisms of Microbial Evolution

Pabulo H. Rampelotto
Molecular Mechanisms of Microbial Evolution Book PDF

Author : Pabulo H. Rampelotto
Publisher : Unknown
Page : 128 pages
File Size : 55,5 Mb
Release : 2018
Category : SCIENCE
ISBN : 3319690795

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Molecular Mechanisms of Microbial Evolution by Pabulo H. Rampelotto Pdf

One of the most profound paradigms that have transformed our understanding about life over the last decades was the acknowledgement that microorganisms play a central role in shaping the past and present environments on Earth and the nature of all life forms. Each organism is the product of its history and all extant life traces back to common ancestors, which were microorganisms. Nowadays, microorganisms represent the vast majority of biodiversity on Earth and have survived nearly 4 billion years of evolutionary change. Microbial evolution occurred and continues to take place in a great variety of environmental conditions. However, we still know little about the processes of evolution as applied to microorganisms and microbial populations. In addition, the molecular mechanisms by which microorganisms communicate/interact with each other and with multicellular organisms remains poorly understood. Such patterns of microbe-host interaction are essential to understand the evolution of microbial symbiosis and pathogenesis. Recent advances in DNA sequencing, high-throughput technologies, and genetic manipulation systems have enabled studies that directly characterize the molecular and genomic bases of evolution, producing data that are making us change our view of the microbial world. The notion that mutations in the coding regions of genomes are, in combination with selective forces, the main contributors to biodiversity needs to be re-examined as evidence accumulates, indicating that many non-coding regions that contain regulatory signals show a high rate of variation even among closely related organisms. Comparative analyses of an increasing number of closely related microbial genomes have yielded exciting insight into the sources of microbial genome variability with respect to gene content, gene order and evolution of genes with unknown functions. Furthermore, laboratory studies (i.e. experimental microbial evolution) are providing fundamental biological insight through direct observation of the evolution process. They not only enable testing evolutionary theory and principles, but also have applications to metabolic engineering and human health. Overall, these studies ranging from viruses to Bacteria to microbial Eukaryotes are illuminating the mechanisms of evolution at a resolution that Darwin, Delbruck and Dobzhansky could barely have imagined. Consequently, it is timely to review and highlight the progress so far as well as discuss what remains unknown and requires future research. This book explores the current state of knowledge on the molecular mechanisms of microbial evolution with a collection of papers written by authors who are leading experts in the field.

Rumen Microbiology: From Evolution to Revolution

Anil Kumar Puniya,Rameshwar Singh,Devki Nandan Kamra
Rumen Microbiology From Evolution to Revolution Book PDF

Author : Anil Kumar Puniya,Rameshwar Singh,Devki Nandan Kamra
Publisher : Springer
Page : 379 pages
File Size : 50,5 Mb
Release : 2015-07-11
Category : Science
ISBN : 9788132224013

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Rumen Microbiology: From Evolution to Revolution by Anil Kumar Puniya,Rameshwar Singh,Devki Nandan Kamra Pdf

This book offers an in-depth description of different groups of microbes (i.e. bacteria, protozoa, fungi and viruses) that exist in the rumen microbial community, and offers an overview of rumen microbiology, the rumen microbial ecosystem of domesticated ruminants, and rumen microbial diversity. It provides the latest concepts on rumen microbiology for scholars, researchers and teachers of animal and veterinary sciences. With this goal in mind, throughout the text we focus on specific areas related to the biology and complex interactions of the microbes in rumen, integrating significant key issues in each respective area. We also discuss rumen manipulation with plant secondary metabolites, microbial feed additives, utilization of organic acids, selective inhibition of harmful rumen microbes, and ‘omics’ approaches to manipulating rumen microbial functions. A section on the exploration and exploitation of rumen microbes addresses topics including the current state of knowledge on rumen metagenomics, rumen: an underutilized niche for industrially important enzymes and ruminal fermentations to produce fuels. We next turn our attention to commercial applications of rumen microbial enzymes and to the molecular characterization of euryarcheal communities within an anaerobic digester. A section on intestinal disorders and rumen microbes covers acidosis in cattle, urea/ ammonia metabolism in the rumen and nitrate/ nitrite toxicity in ruminant diets. Last, the future prospects of rumen microbiology are examined, based on the latest developments in this area. In summary, the book offers a highly systematic collection of essential content on rumen microbiology.

Microbial Symbioses

Sebastien Duperron
Microbial Symbioses Book PDF

Author : Sebastien Duperron
Publisher : Elsevier
Page : 166 pages
File Size : 52,7 Mb
Release : 2016-11-30
Category : Science
ISBN : 9780081021187

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Microbial Symbioses by Sebastien Duperron Pdf

Plants and animals have evolved ever since their appearance in a largely microbial world. Their own cells are less numerous than the microorganisms that they host and with whom they interact closely. The study of these interactions, termed microbial symbioses, has benefited from the development of new conceptual and technical tools. We are gaining an increasing understanding of the functioning, evolution and central importance of symbiosis in the biosphere. Since the origin of eukaryotic cells, microscopic organisms of our planet have integrated our very existence into their ways of life. The interaction between host and symbiont brings into question the notion of the individual and the traditional representation of the evolution of species, and the manipulation of symbioses facilitates fascinating new perspectives in biotechnology and health. Recent discoveries show that association is one of the main properties of organisms, making a more integrated view of biology necessary. Microbial Symbioses provides a deliberately “symbiocentric outlook, to exhibit how the exploration of microbial symbioses enriches our understanding of life, and the potential future for this discipline. Offers a concise summary of the most recent discoveries in the field Shows how symbiosis is acquiring a central role in the biology of the 21st century by transforming our understanding of living things Presents scientific issues, but also societal and economic related issues (biodiversity, biotechnology) through examples from all branches of the tree of life

Links Between Geological Processes, Microbial Activities & Evolution of Life

Yildirim Dilek,Harald Furnes,Karlis Muehlenbachs
Links Between Geological Processes Microbial Activities Evolution of Life Book PDF

Author : Yildirim Dilek,Harald Furnes,Karlis Muehlenbachs
Publisher : Springer Science & Business Media
Page : 359 pages
File Size : 49,6 Mb
Release : 2008-07-01
Category : Science
ISBN : 9781402083068

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Links Between Geological Processes, Microbial Activities & Evolution of Life by Yildirim Dilek,Harald Furnes,Karlis Muehlenbachs Pdf

Microbial systems in extreme environments and in the deep biosphere may be analogous to potential life on other planetary bodies and hence may be used to investigate the possibilities of extraterrestrial life. This book examines the mode and nature of links between geological processes and microbial activities and their significance for the origin and evolution of life on the Earth and possibly on other planets. This is a truly interdisciplinary science with societal relevance.

Defensive Mutualism in Microbial Symbiosis

James F. White Jr.,Monica S. Torres
Defensive Mutualism in Microbial Symbiosis Book PDF

Author : James F. White Jr.,Monica S. Torres
Publisher : CRC Press
Page : 430 pages
File Size : 52,5 Mb
Release : 2009-05-26
Category : Science
ISBN : 1420069322

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Defensive Mutualism in Microbial Symbiosis by James F. White Jr.,Monica S. Torres Pdf

Anemones and fish, ants and acacia trees, fungus and trees, buffaloes and oxpeckers--each of these unlikely duos is an inimitable partnership in which the species’ coexistence is mutually beneficial. More specifically, they represent examples of defensive mutualism, when one species receives protection against predators or parasites in exchange for offering shelter or food to its partner species. Explores the Diverse Range of Defensive Mutualisms Involving Microbial Symbionts The past 20 years, since this phenomenon first began receiving attention, have been marked by a deluge of research in a variety of organism kingdoms and much has been discovered about this intriguing behavior. Defensive Mutualism in Microbial Symbiosis includes basic ecological and biological information on defensive mutualisms, explores how they function, and evaluates how they have evolved. It also looks at the implications of symbiosis defensive compounds as a new frontier in bioexploration for drug and natural product discovery--the first book to explore this possibility. Chapters Written by Field Authorities The book expands the concept of defensive mutualisms to evaluate defense against environmental abiotic and biotic stresses. Addressing the topic of defensive mutualisms in microbial symbiosis across this wide spectrum, it includes chapters on defensive mutualistic associations involving multiple kingdoms of organisms in terrestrial and aquatic ecosystems--plant, animal, fungi, bacteria, and protozoans. Defensive Mutualism in Microbial Symbiosis unifies scattered findings into a single compendium, providing a valuable reference for field researchers and those in academia to assimilate and acquire a knowledgeable perspective on defensive mutualism, particularly those involving microbial partners.