Download or read book Mechanisms of thermal adaptation in bacteria written by N.J. RUSSELL and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanisms of Adaptation written by J.R. Spkatch and published by Elsevier. This book was released on 2014-04-24 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bacteria: Volume VII: Mechanisms of Adaptation explores the mechanisms of bacterial adaptations and covers topics ranging from bacterial spores, cysts, and stalks to nitrogen fixation, bacterial chemotaxis, bacteriophage growth, and the structure and biosynthesis of bacterial cell walls. The roles of appendages and surface layers in adaptation of bacteria to their environment are also considered, along with cell division in Escherichia coli. This volume is comprised of nine chapters and begins with a discussion on the structure, properties, formation, and regulation of spores, cysts, and stalks in actinomycetes, blue-green bacteria, myxobacteria, Bacillus, Azotobacter, and Caulobacter. The reader is then introduced to the biochemistry, regulation, genetics, and evolution of nitrogen fixing in organisms; the receptors involved in bacterial chemotaxis and the nature of the sensing mechanism; the outer membrane of gram-negative bacteria; and bacterial functions involved in nutrient detection and acquisition. The roles played by organelles and surface layers in the adaptation of bacteria to their environment are also examined. The final chapter deals with the regulation of, and coordination between, the multitude of events involved in cell division in Escherichia coli. This monograph will be a useful resource for microbiologists, bacteriologists, biochemists, and biologists.
Download or read book Expression of the Thermal Adaptation of Bacteria in the Mechanism of Lactate Dehydrogenase Action written by William Phillip Huskey and published by . This book was released on 1985 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Mechanisms of Temperature Adaptation written by Clifford Ladd Prosser and published by . This book was released on 1967 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extreme Environments written by Milton R. Heinrich and published by Elsevier. This book was released on 2013-10-22 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extreme Environments: Mechanisms of Microbial Adaptation is a collection of papers presented at the symposium on Extreme Environments: Mechanisms of Microbial Adaptation, held at Ames Research Center, Moffett Field, California in June 1974. The meeting emphasizes research work leading to an understanding of the molecular mechanisms that allow the organism to survive extreme environments. The book presents lectures and papers on the general aspects of microbial adaptation; effects of temperature and high salt concentration on the various steps in information transfer; and on microbial enzymes. Effects of temperature, salt, and pressure on membrane structure and function are analyzed as well. The book will be of interest to biologists, microbiologists, biochemists, zoologists, and students of life sciences.
Download or read book Thermophilic Bacteria written by Jakob K. Kristjansson and published by CRC Press. This book was released on 2021-01-31 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermophilic Bacteria is a comprehensive volume that describes all major bacterial groups that can grow above 60-65°C (excluding the Archaea). Over 60 different species of aerobic and anaerobic thermophilic bacteria are covered. Isolation, growth methods, characterization and identification, ecology, metabolism, and enzymology of thermophilic bacteria are examined in detail, and an extensive compilation of recent biotechnological applications and the properties of many thermostable enzymes are also included. Major topics discussed in the book include a general review on thermophilic bacteria and archaea; heterotropic bacilli; the genus Thermus; new and rare genera of aerobic heterophophs, such as Saccharococcus, Rhodothermus, and Scotohermus; aerobic chemolithoautotrophic thermophilic bacteria; obligately anaerobic thermophilic bacteria; and hyperthermophilic Thermotogales and thermophilic phototrophs. Extensive bibliographies are also provided for each chapter. The vast amount of information packed into this one volume makes it essential for all microbiologists, biochemists, molecular biologists, and students interested in the expanding field of thermophilicity. Biotechnologists will find the book useful as a source of information on thermophiles or thermostable enzymes of possible industrial use.
Download or read book Stress and Environmental Regulation of Gene Expression and Adaptation in Bacteria written by Frans J. de Bruijn and published by John Wiley & Sons. This book was released on 2016-07-13 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria in various habitats are subject to continuously changing environmental conditions, such as nutrient deprivation, heat and cold stress, UV radiation, oxidative stress, dessication, acid stress, nitrosative stress, cell envelope stress, heavy metal exposure, osmotic stress, and others. In order to survive, they have to respond to these conditions by adapting their physiology through sometimes drastic changes in gene expression. In addition they may adapt by changing their morphology, forming biofilms, fruiting bodies or spores, filaments, Viable But Not Culturable (VBNC) cells or moving away from stress compounds via chemotaxis. Changes in gene expression constitute the main component of the bacterial response to stress and environmental changes, and involve a myriad of different mechanisms, including (alternative) sigma factors, bi- or tri-component regulatory systems, small non-coding RNA’s, chaperones, CHRIS-Cas systems, DNA repair, toxin-antitoxin systems, the stringent response, efflux pumps, alarmones, and modulation of the cell envelope or membranes, to name a few. Many regulatory elements are conserved in different bacteria; however there are endless variations on the theme and novel elements of gene regulation in bacteria inhabiting particular environments are constantly being discovered. Especially in (pathogenic) bacteria colonizing the human body a plethora of bacterial responses to innate stresses such as pH, reactive nitrogen and oxygen species and antibiotic stress are being described. An attempt is made to not only cover model systems but give a broad overview of the stress-responsive regulatory systems in a variety of bacteria, including medically important bacteria, where elucidation of certain aspects of these systems could lead to treatment strategies of the pathogens. Many of the regulatory systems being uncovered are specific, but there is also considerable “cross-talk” between different circuits. Stress and Environmental Regulation of Gene Expression and Adaptation in Bacteria is a comprehensive two-volume work bringing together both review and original research articles on key topics in stress and environmental control of gene expression in bacteria. Volume One contains key overview chapters, as well as content on one/two/three component regulatory systems and stress responses, sigma factors and stress responses, small non-coding RNAs and stress responses, toxin-antitoxin systems and stress responses, stringent response to stress, responses to UV irradiation, SOS and double stranded systems repair systems and stress, adaptation to both oxidative and osmotic stress, and desiccation tolerance and drought stress. Volume Two covers heat shock responses, chaperonins and stress, cold shock responses, adaptation to acid stress, nitrosative stress, and envelope stress, as well as iron homeostasis, metal resistance, quorum sensing, chemotaxis and biofilm formation, and viable but not culturable (VBNC) cells. Covering the full breadth of current stress and environmental control of gene expression studies and expanding it towards future advances in the field, these two volumes are a one-stop reference for (non) medical molecular geneticists interested in gene regulation under stress.
Download or read book Thermal Adaptation written by Michael James Angilletta and published by Oxford University Press. This book was released on 2009-01-29 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Temperature impacts the behaviour, physiology and ecology of all organisms more than any other abiotic variable. In this book, the author draws on theory from the more general discipline of evolutionary ecology to foster a fresh approach toward a theory of thermal adaptation.
Download or read book Membrane Fluidity written by Morris Kates and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to bring together in one volume the current research and thought on the concept of membrane fluidity as a biological phenomenon. The invited articles are intended to review recent develop ments in the areas of membrane research covered and to summarize the current concepts and theories in those areas. The authors have been given ample opportunity to present their thoughts and speculation on membrane fluidity and related phenomena in a more expanded form than is usually possible in reviews of this type. It is hoped that this approach will have a stimulating effect on research and theoretical development in the biomem brane field. The chapters in this book are arranged in three sections, the first of which covers physical studies of membrane fluidity and related phenomena on the molecular level. Included are chapters on intermolecular hydrogen bonding between membrane lipids, thermal analysis of membranes, appli cation of fluorescence and NMR spectrometry to the study of membrane fluidity, and the effect of drugs and other compounds on membrane stability and fluidity. The second section deals with the regulation of membrane fluidity in microorganisms, plants, and higher organisms by factors such as tem perature, fatty acid chain length, lipid desaturation, and polar head group structure.
Download or read book Mechanisms of Thermal Adaptation Revealed from the Genomes of the Antarctic written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We generated draft genome sequences for two cold-adapted Archaea, Methanogenium frigidum and Methanococcoides burtonii, to identify genotypic characteristics that distinguish them from Archaea with a higher optimal growth temperature (OGT). Comparative genomics revealed trends in amino acid and tRNA composition, and structural features of proteins. Proteins from the cold-adapted Archaea are characterized by a higher content of non-charged polar amino acids, particularly Gln and Thr and a lower content of hydrophobic amino acids, particularly Leu. Sequence data from nine methanogen genomes (OGT 15-98 C) was used to generate 1 111 modeled protein structures. Analysis of the models from the cold-adapted Archaea showed a strong tendency in the solvent accessible area for more Gln, Thr an hydrophobic residues and fewer charged residues. A cold shock domain (CSD) protein (CspA homolog) was identified in M. frigidum, two hypothetical proteins with CSD-folds in M. burtonii, and a unique winged helix DNA-binding domain protein in M. burtonii. This suggests that these types of nucleic acid binding proteins have a critical role in cold-adapted Archaea. Structural analysis of tRNA sequences from the Archaea indicated that GC content is the major factor influencing tRNA stability in hyperthermophiles, but not in the psychrophiles, mesophiles or moderate thermophiles. Below an OGT of 60 C, the GC content in tRNA was largely unchanged, indicating that any requirement for flexibility of tRNA in psychrophiles is mediated by other means. This is the first time that comparisons have been performed with genome data from Archaea spanning the growth temperature extremes from psychrophiles to hyperthermophiles.
Download or read book Bacterial Physiology written by C. H. Werkman and published by Elsevier. This book was released on 2013-10-22 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial Physiology focuses on the physiology and chemistry of microorganisms and the value of bacterial physiology in the other fields of biology. The selection first underscores the chemistry and structure of bacterial cells, including the chemical composition of cells, direct and indirect methods of cytology, vegetative multiplication, spores of bacteria, and cell structure. The text then elaborates on inheritance, variation, and adaptation and growth of bacteria. The publication reviews the physical and chemical factors affecting growth and death. Topics include hydrogen ion concentration and osmotic pressure; surface and other forces determining the distribution of bacteria in their environment; dynamics of disinfection and bacteriostasis; bacterial resistance; and types of antibacterial agents. The text also ponders on the anaerobic dissimilation of carbohydrates, bacterial oxidations, and autotrophic assimilation of carbon dioxide. The selection is a dependable reference for readers interested in bacterial physiology.
Download or read book Extremophiles Handbook written by Koki Horikoshi and published by Springer Science & Business Media. This book was released on 2010-12-08 with total page 1277 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Extremophiles Handbook brings together the rapidly growing and often scattered information on microbial life in the whole range of extreme environments. This book will be a useful reference for finding clues to the origin of life and for exploring the biotechnology potential of these fascinating organisms.
Download or read book Thermophilic Anaerobes written by Sean Michael Scully and published by Springer. This book was released on 2023-11-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot environments are diverse environments that habor a wide variety of anaerobic microorganisms. Although the existence of thermophilic microorganisms has been known for over a century, it is only since the 1970s that warm environments inhabited by thermophiles have been studied in more detail. While aerobic thermophiles have received most of the interest, thermophilic anaerobes have received less attention. This book provides a comprehensive overview of the fundamental aspects of thermophilic anaerobes, from their environments to their applications in biotechnology. The book is divided into three parts: 1) a general overview of thermophilic anaerobes, their history, environments, and phylogenetic relationships, 2) physiological aspects of thermophilic anaerobes and their mechanisms of thermal adaptation, and 3) the biotechnological applications of thermophiles for the production of biofuels and other chemical building blocks as well as their applications in specific industries. This comprehensive and up-to-date book, Thermophilic anaerobes - Phylogeny, Physiology and Biotechnological Applications, is a valuable resource for experienced researchers and early career scientists alike who want to learn more about this exciting and developing field.
Download or read book Cold adapted Microorganisms written by Isao Yumoto and published by Caister Academic Press Limited. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold-adapted microorganisms play a major role in nutrient turnover and primary biomass production in cold ecosystems and have important applications in biotechnology and in the study of food spoilage microorganisms. Divided into three main sections, the book covers the major aspects of biodiversity in cold ecosystems, the physiology and molecular adaptation mechanisms, and the various biomolecules related to cold adaptation --
Download or read book Molecular Basis of Specific Mechanism for Bacterial Adaptation written by Marcos López-Pérez and published by . This book was released on 2021-01-21 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the appearance of Darwin's book, "The Origin of Species," adaptation is one of the processes that explains the diversity of species in ecosystems. Adaptive phenomena in the 19th century and until the mid-20th century have been analyzed in macroscopic biological systems, however since the second half of the 20th century and to date the development of disciplines such as Molecular Biology, has allowed us to delve into the mechanisms that regulate cell physiology.The molecular bases that allow explaining the adaptation processes of microorganisms to their environment have special relevance, because through their analysis it is possible to size the complexity of these mechanisms that involve receptors of a protein nature associated with transduction chains that transport the information flow to genomic DNA, and which subsequently involves the emission of a response through the expression of specific genes.From the point of view of the adaptive phenomenon analysis, the approach through the molecular bases makes it possible to understand the enormous diversity of the microbial world. Mainly for two reasons, on the one hand the presence of micro gradients in the bacterial ecological niches that are continuously fluctuating, which forces the microorganisms to a rapid adaptation phenomenon. And on the other hand, horizontal gene transfer phenomena, which allow bacteria the information exchange. These two elements carry great intensity in establishing new relationships. This phenomenon is especially relevant if it is related to a concept that Darwin cites in the Origin of Species, "The tangled riverbank", where it is emphasized that the new interactions establishment is the basic driving force for the new species generation. This mechanism is explained by the positive feedback loop generation, whereby ecosystems with high levels of biological diversity generate new interactions that lead to new species, which in turn tends to make the ecosystem network more complex. This complexity analyzed in its molecular bases allows to generate new research questions that can be applied to other knowledge areas, such as Biotechnology.The analysis of the molecular bases of the microorganisms adequacy, makes it possible to identify and characterize mechanisms that implemented in different pharmaceutical areas and agricultural industry has led to the product generation with high added value, a clear example of this economic development is the enzyme industry and even recombinant protein production.Finally, it is convenient to emphasize the need to incorporate the analysis of the molecular bases of adaptation from the perspective of omics techniques. Techniques that allow the study of processes and mechanisms to be approached from a global perspective.This book summarizes some topics of special relevance referring to adaptive processes of different microorganisms of special relevance both in basic and applied research.
Download or read book Microbial Diversity and Resources in Tidal Flats written by Xue-Wei Xu and published by Frontiers Media SA. This book was released on 2024-06-06 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tidal flats are widely distributed worldwide, occupying at least 127,921 km2, of which 70% are located in coastal areas of Asia, and North and South America. As a confluence of terrestrial and marine ecosystems, tidal flat is dually influenced by these two ecosystems and becomes one of the most productive ecosystems. Rhythmic changes of environmental factors (e.g., salinity, temperature, dissolved oxygen, illumination intensity, ocean current, etc.) and frequent disturbances of human behaviour enhance organic matter as well as nitrogen, phosphorus, and sulfur compounds in tidal flats. Furthermore, tidal flats have various important ecosystem functions, including climate regulation, shoreline stabilization, carbon fixation, pollutant degradation, etc.
Download or read book Effects of Temperature on Ectothermic Organisms written by Wolfgang Wieser and published by Springer. This book was released on 1973 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
