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Microbial evolution under extreme conditions /
This book explores the current state of knowledge about microbial evolution under extreme conditions addressing questions from the perspectives of different extreme environments, organisms, and evolutionary processes: What is known about the processes of evolution that produce adaptations to extreme...
| Clasificación: | Libro Electrónico |
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| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Berlin ; Boston :
Walter de Gruyter GmbH & Co., KG,
[2014]
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| Colección: | Life in extreme environments.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Preface; Contents; Contributing authors; 1 Extreme environments as model systems for the study of microbial evolution; 1.1 Introduction; 1.2 Extreme environments as model systems; 1.3 What is known about microbial evolution?; 1.3.1 Community diversity as a measure of evolution; 1.3.2 Adaptive traits as a measure of evolution; 1.4 Themes from extreme environments; 1.5 Conclusions and open questions; 2 Microbial evolution: the view from the acidophiles; 2.1 Introduction; 2.2 Horizontal gene transfer; 2.3 The mobilome; 2.4 Phages; 2.5 Plasmids; 2.6 Transposons.
- 2.7 Evolution and ecology: long term studies of genetic variation2.8 Future directions; 3 Microbial Evolution in the Cryosphere; 3.1 Overview; 3.1.1 Cryospheric evironments; 3.1.2 Modes of evolution; 3.1.3 Adaptations to living with ice; 3.2 Focus on sea ice; 3.2.1 Sea ice characteristics; 3.2.2 Evolutionary modes in sea ice; 3.3 Ongoing work and future directions; 3.3.1 Field work and experimentation; 3.3.2 '-omics' in the cryosphere; 3.3.3 Linking phenotype and genotype; 4 Metabolic and taxonomic diversification in continental magmatic hydrothermal systems; 4.1 Introduction.
- 4.2 Geological drivers of geochemical variation in continental hydrothermal systems4.3 Taxonomic and functional diversity in continental hydrothermal ecosystems; 4.4 Application of phylogenetic approaches to map taxonomic and functional diversity on spatial geochemical landscapes; 4.5 Molecular adaptation to high temperature; 4.5.1 Lipids; 4.5.2 Protein stability; 4.5.3 Cytoplasmic osmolytes; 4.5.4 Motility; 4.6 Mechanisms of evolution in high temperature environments; 4.7 Concluding remarks; 5 Halophilic microorganisms and adaptation to life at high salt concentrations
- evolutionary aspects.
- 5.1 Phylogenetic and physiological diversity of halophilic microorganisms5.2 What adaptations are necessary to become a halophile?; 5.3 Is an acidic (meta)proteome indeed indicative for halophily and high intracellular ionic concentrations?; 5.4 Genetic variation and horizontal gene transfer in communities of halophilic Archaea; 5.5 Salinibacter: convergent evolution and the 'salt-in' strategy of haloadaptation; 5.6 High intracellular K+ concentrations but no acidic proteome? The case of the Halanaerobiales; 5.7 Different modes of haloadaptation in closely related Halorhodospira species.
- 5.8 Final comments6 The origin of extreme ionizing radiation resistance; 6.1 Introduction and background; 6.1.1 Ionizing radiation; 6.1.2 Biological damage caused by electromagnetic radiations; 6.1.3 Exposure to ionizing radiation selects for ionizing radiation resistant bacteria; 6.1.4 The occurrence of extreme ionizing radiation resistance within the Bacteria and Archaea; 6.1.5 Natural sources of ionizing radiation; 6.2 The existence of extreme ionizing radiation resistance is difficult to reconcile with the natural history of the Earth.