Genomics And Evolution Of Microbial Eukaryotes
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Genomics And Evolution Of Microbial Eukaryotes
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Author : Laura A Katz
language : en
Publisher: OUP Oxford
Release Date : 2006-09-07
Genomics And Evolution Of Microbial Eukaryotes written by Laura A Katz and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-09-07 with Science categories.
Genomics and Evolution of Eukaryotic Microbes synthesizes the rapidly emerging fields of eukaryotic diversity and genome evolution. Eukaryotes (cells with nuclei) evolved as microbes and have existed on Earth for approximately two billion years. The tremendous diversity of eukaryotic microbes (protists) is often overlooked by those who study the macroscopic eukaryotic lineages: plants, animals, and fungi. Yet, eukaryotic microbes are of critical importance to ecosystems, human health, and our desire to understand biodiversity on Earth. By bringing together groundbreaking data from genome studies of diverse eukaryotic microbes, this book elucidates the many novelties among eukaryotic genomes and provides a single resource for otherwise widely dispersed information. Eukaryotic microorganisms impact both our health and our environment. These organisms include some of the deadliest known pathogens such as Plasmodium falciparum, a causative agent of malaria, and Entamoeba histolytica an agent of dysentery. Eukaryotic microbes also play a significant role in environments through their involvement in global biogeochemical cycles. Such roles are perhaps best exemplified by the coccolithophores, including the species Emiliania huxleyi, which can create 'blooms' in the oceans that are visible from outer space (i.e. as large as the state of Alaska). Despite the great importance and breadth of eukaryotic microbes (the vast majority of major ukaryotic lineages are microbial, with plants, animals and fungi representing just three of an estimated 60-200 major lineages), our understanding of their diversity and phylogeny is only now rapidly expanding, in part bolstered by genomic studies. This book presents analyses and interpretations from experts in the field. Recent advances, particularly in DNA sequencing technologies, have made eukaryotic microbes more accessible to genome analyses. Unravelling the wealth of information on eukaryotic genomes will invariably revolutionize our understanding of eukaryotes, including their physiology, systematics, and ecology.
Genomics And Evolution Of Microbial Eukaryotes
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Author : Laura A Katz
language : en
Publisher: OUP Oxford
Release Date : 2006-09-07
Genomics And Evolution Of Microbial Eukaryotes written by Laura A Katz and has been published by OUP Oxford this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-09-07 with Science categories.
Genomics and Evolution of Eukaryotic Microbes synthesizes the rapidly emerging fields of eukaryotic diversity and genome evolution. Eukaryotes (cells with nuclei) evolved as microbes and have existed on Earth for approximately two billion years. The tremendous diversity of eukaryotic microbes (protists) is often overlooked by those who study the macroscopic eukaryotic lineages: plants, animals, and fungi. Yet, eukaryotic microbes are of critical importance to ecosystems,human health, and our desire to understand biodiversity on Earth. By bringing together groundbreaking data from genome studies of diverse eukaryotic microbes, this book elucidates the many novelties among eukaryotic genomes and provides a single resource for otherwise widely dispersed information.Eukaryotic microorganisms impact both our health and our environment. These organisms include some of the deadliest known pathogens such as Plasmodium falciparum, a causative agent of malaria, and Entamoeba histolytica an agent of dysentery. Eukaryotic microbes also play a significant role in environments through their involvement in global biogeochemical cycles. Such roles are perhaps best exemplified by the coccolithophores, including the species Emiliania huxleyi, which can create'blooms' in the oceans that are visible from outer space (i.e. as large as the state of Alaska). Despite the great importance and breadth of eukaryotic microbes (the vast majority of major ukaryotic lineages are microbial, with plants, animals and fungi representing just three of an estimated 60-200 majorlineages), our understanding of their diversity and phylogeny is only now rapidly expanding, in part bolstered by genomic studies.This book presents analyses and interpretations from experts in the field. Recent advances, particularly in DNA sequencing technologies, have made eukaryotic microbes more accessible to genome analyses. Unravelling the wealth of information on eukaryotic genomes will invariably revolutionize our understanding of eukaryotes, including their physiology, systematics, and ecology.
Molecular Mechanisms Of Microbial Evolution
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Author : Pabulo H. Rampelotto
language : en
Publisher: Springer
Release Date : 2018-10-12
Molecular Mechanisms Of Microbial Evolution written by Pabulo H. Rampelotto and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-12 with Science categories.
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.
Molecular Mechanisms Of Microbial Evolution
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Author : Pabulo H. Rampelotto
language : en
Publisher:
Release Date : 2018
Molecular Mechanisms Of Microbial Evolution written by Pabulo H. Rampelotto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with SCIENCE categories.
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.
Organelles Genomes And Eukaryote Phylogeny
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Author : Robert P Hirt
language : en
Publisher: CRC Press
Release Date : 2004-06-28
Organelles Genomes And Eukaryote Phylogeny written by Robert P Hirt and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-06-28 with Science categories.
The recent revolution in molecular biology has spread through every field of biology including systematics and evolution. Researchers can now analyze the genomes of different species relatively quickly, and this is generating a great deal of data and theories about relationships between taxa as well as how they originated and diversified. Org
Microbial Genomics Challenge Darwin
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Author : Didier Raoult
language : en
Publisher: Frontiers E-books
Release Date :
Microbial Genomics Challenge Darwin written by Didier Raoult and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
The 200th anniversary of Darwin’s birthday was celebrated in 2009, making the concept of Darwinism even more popular than at the time it was originally proposed, to the extent that it has acquired quasi-religious status. His theory revolves around a Tree of Life in which all living organisms are considered to have descended from a single ancestor, and each node represents a common ancestor. It comprises hierarchy and dichotomy, which are typical characteristics of the post-biblical 19th century vision. Indeed, according to post-modern philosophy (also called the French theory) the majority of theories, including scientific ones, are based only on meta-narratives expressing the influence of a culture at a given time. Buddhism or Hinduism may have generated a very different story of evolution. Our way of thinking about life, and the way we describe evolution, have changed radically in the 21st century due to the genomic revolution. Comparative genome analyses have demonstrated that gene repertoires are characterized by plasticity, and there is strong evidence that nearly all genes have been exchanged at some point. Genomic data show that the genetic information of living organisms is inherited not only vertically but also laterally. Lateral gene transfers were at first observed only in bacteria, which contain genes originating from eukaryotes, Archaea and viruses. Such transfers were subsequently identified in all living organisms; giant viruses have chimeric genomes and the human genome is a mosaic of genes with eukaryotic, bacterial, and viral origins. We cannot identify a single common ancestor for the gene repertoire of any organism. Furthermore, a very high proportion of genes have been newly created through gene fusion or degradation, and others show no homology to sequences found in other species. It is now clear that every living organism has a variety of ancestors, while exchanges between species are intense, and the creation of new genes is frequent and permanent in all living organisms. Our current genomic knowledge contradicts the tree of life theory, as established by Darwin. Recent analyses have produced bushes rather than resolved trees, with the structure of some parts remaining elusive. It becomes more and more obvious that phylogenetic relationships are better described by forests and networks and that species evolution looks more like a rhizome. The chimerism and mosaic structure of all living organisms through both non-vertical inheritance and de novo creation can only be assimilated and described by a post-Darwinist concept. In this Research Topic we wish to highlight the influence of microbiology and genomics on our understanding of the complexity of gene repertoires, and also demonstrate how current knowledge does not support Darwin’s theory. Microbiology has offered a great advance in the way we perceive life. Evidence obtained from studies on bacterial and viral evolution, lateral inheritance, phylogenetic trees and biodiversity continues to challenge what constituted, until recently, an unimpeded dogma in biology.
Lateral Gene Transfer In Evolution
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Author : Uri Gophna
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-07-20
Lateral Gene Transfer In Evolution written by Uri Gophna and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-07-20 with Medical categories.
Although the phenomenon of lateral gene transfer has been known since the 1940's, it was the genomics era that has really revealed the extent and many facets of this evolutionary/genetic phenomenon. Even in the early 2000s with but a handful of genomes available it became clear that the nature of microorganisms is full of genetic exchange between lineages that are sometimes far apart. The years following this saw an explosion of genomic data, which shook the "tree of life" and also raised doubts about the most appropriate species concepts for prokaryotes. This book attempts to represent the many-fold contributions of LGT to the evolution of micro and, to an extent, macro-organisms by focusing on the areas where the Editor felt it had the largest impact: metabolic innovations and adaptations and speciation.
Evolution Of Microbial Life
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Author : Society for General Microbiology. Symposium
language : en
Publisher: Cambridge University Press
Release Date : 1996-11-13
Evolution Of Microbial Life written by Society for General Microbiology. Symposium and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-11-13 with Medical categories.
This volume considers the evolution and diversification of early unicellular life.
Developmental Biology In Prokaryotes And Lower Eukaryotes
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Author : Tomás González Villa
language : en
Publisher: Springer Nature
Release Date : 2021-07-31
Developmental Biology In Prokaryotes And Lower Eukaryotes written by Tomás González Villa and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-07-31 with Science categories.
‘Developmental biology’ is widely understood as processes, which mainly concern embryonic animal development and differentiation of cells and tissue. It is also often defined as the timeline for the evolutionary developmental biology of eukaryotic multicellular higher organisms, i.e., plants and animals. The development of prokaryotes and lower eukaryotes in contrary has been neglected for a long time, which was the motivation for publishing this book. This book highlights one of Darwin's most important findings: Evolution is a creative, but not a conscious process. It also illustrates that this concept does not only apply to multicellular higher organisms, but affects every form of life. The reader shall find complex biochemical and genetic pathways of bacteria, yeasts or protozoa, comparable to those exhibited by plants or animals. The molecular mechanisms of dramatic genome rearrangements, recombination and horizontal gene transfer that are responsible for evolutionary adaptations are discussed. Additionally, the book covers bacteria of the genera Myxobacteriales and Caulobacterales, which are able to develop tissue-like cellular organization. The morphogenesis of entomopathogenic fungi and the endosymbiont theory are also addressed. The book is a useful introduction to the field for junior scientists, interested in bacteriology, protistology and fungal development. It is also an interesting read for advanced scientists, giving them a broader view of the field beyond their area of specialization.
Genome And Genomics
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Author : K. V. Chaitanya
language : en
Publisher: Springer Nature
Release Date : 2019-11-17
Genome And Genomics written by K. V. Chaitanya and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-17 with Medical categories.
This book provides a detailed and up-to-dated information on the genomes belonging to three major life forms on Earth – archaea, prokaryotes and eukaryotes. Each section describes about the genome of a specific group of organisms, such as viruses, archaea, bacteria, eukaryotes and organellar genomes. Individual chapters provide details of their organization, structure, evolution, sequencing strategies and functions. Further, this book discusses the technologies that are applied for genome sequencing; assembly, annotation and gene prediction. Other topics include the genomes of important model organisms, mitochondria genome of Neanderthal fossil, etc. This book also examines the evolution of chloroplast and mitochondria genomes by comparing with bacteria, addresses the diseases that occur in humans due to the mutations in mitochondrial genome, gene therapy and engineering of chloroplast and mitochondrial genomes. Lastly, it features an overview of the role of proteomics, exposomics, connectomics, metabolomics, and microbiomics. This book is a fascinating read for students, lecturers and researchers in the field of genetics, genomics, microbiology and life sciences.