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Nonculturable Microorganisms in the Environment

Author: Colwell

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 355

ISBN-13: 147570271X

This text on viable but non-culturable organisms provides information on topics including: morphological changes; the role of membranes; genetics and genetic regulation; molecular methods for detection; as well as survival dominancy and related phenomena. The main purpose of the text is to elucidate the phenomenon and to distinguish it from other seemingly related but different phenomena such as spore formation, dormancy, starvation, and injury. It covers a cross section of morphology, metabolism, genetics, ecology and epidemiology.

Starvation in Bacteria

Author: S. Kjelleberg

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 288

ISBN-13: 1489924396

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Concerted efforts to study starvation and survival of nondifferentiating vegeta tive heterotrophic bacteria have been made with various degrees of intensity, in different bacteria and contexts, over more than the last 30 years. As with bacterial growth in natural ecosystem conditions, these research efforts have been intermittent, with rather long periods of limited or no production in between. While several important and well-received reviews and proceedings on the topic of this monograph have been published during the last three to four decades, the last few years have seen a marked increase in reviews on starvation survival in non-spore-forming bacteria. This increase reflects a realization that the biology of bacteria in natural conditions is generally not that of logarithmic growth and that we have very limited information on the physiology of the energy-and nutrient-limited phases of the life cyde of the bacterial cello The growing interest in nongrowing bacteria also sterns from the more recent advances on the molecular basis of the starvation-induced nongrowing bacterial cello The identification of starvation-specific gene and protein re sponders in Escherichia coli as weIl as other bacterial species has provided molecular handles for our attempts to decipher the "differentiation-like" responses and programs that nondifferentiating bacteria exhibit on nutrient limited growth arrest. Severallaboratories have contributed greatly to the progress made in life after-log research.

Microbiomes of the Built Environment

Author: National Academies of Sciences, Engineering, and Medicine

Publisher: National Academies Press

Published: 2017-10-06

Total Pages: 318

ISBN-13: 0309449839

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People's desire to understand the environments in which they live is a natural one. People spend most of their time in spaces and structures designed, built, and managed by humans, and it is estimated that people in developed countries now spend 90 percent of their lives indoors. As people move from homes to workplaces, traveling in cars and on transit systems, microorganisms are continually with and around them. The human-associated microbes that are shed, along with the human behaviors that affect their transport and removal, make significant contributions to the diversity of the indoor microbiome. The characteristics of "healthy" indoor environments cannot yet be defined, nor do microbial, clinical, and building researchers yet understand how to modify features of indoor environmentsâ€"such as building ventilation systems and the chemistry of building materialsâ€"in ways that would have predictable impacts on microbial communities to promote health and prevent disease. The factors that affect the environments within buildings, the ways in which building characteristics influence the composition and function of indoor microbial communities, and the ways in which these microbial communities relate to human health and well-being are extraordinarily complex and can be explored only as a dynamic, interconnected ecosystem by engaging the fields of microbial biology and ecology, chemistry, building science, and human physiology. This report reviews what is known about the intersection of these disciplines, and how new tools may facilitate advances in understanding the ecosystem of built environments, indoor microbiomes, and effects on human health and well-being. It offers a research agenda to generate the information needed so that stakeholders with an interest in understanding the impacts of built environments will be able to make more informed decisions.

Environmental Microbiology: Fundamentals and Applications

Author: Jean-Claude Bertrand

Publisher: Springer

Published: 2015-01-26

Total Pages: 933

ISBN-13: 940179118X

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This book is a treatise on microbial ecology that covers traditional and cutting-edge issues in the ecology of microbes in the biosphere. It emphasizes on study tools, microbial taxonomy and the fundamentals of microbial activities and interactions within their communities and environment as well as on the related food web dynamics and biogeochemical cycling. The work exceeds the traditional domain of microbial ecology by revisiting the evolution of cellular prokaryotes and eukaryotes and stressing the general principles of ecology. The overview of the topics, authored by more than 80 specialists, is one of the broadest in the field of environmental microbiology. The overview of the topics, authored by more than 80 specialists, is one of the broadest in the field of environmental microbiology.

Size Limits of Very Small Microorganisms

Author: National Research Council

Publisher: National Academies Press

Published: 1999-09-13

Total Pages: 171

ISBN-13: 0309172748

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How small can a free-living organism be? On the surface, this question is straightforward-in principle, the smallest cells can be identified and measured. But understanding what factors determine this lower limit, and addressing the host of other questions that follow on from this knowledge, require a fundamental understanding of the chemistry and ecology of cellular life. The recent report of evidence for life in a martian meteorite and the prospect of searching for biological signatures in intelligently chosen samples from Mars and elsewhere bring a new immediacy to such questions. How do we recognize the morphological or chemical remnants of life in rocks deposited 4 billion years ago on another planet? Are the empirical limits on cell size identified by observation on Earth applicable to life wherever it may occur, or is minimum size a function of the particular chemistry of an individual planetary surface? These questions formed the focus of a workshop on the size limits of very small organisms, organized by the Steering .Group for the Workshop on Size Limits of Very Small Microorganisms and held on October 22 and 23, 1998. Eighteen invited panelists, representing fields ranging from cell biology and molecular genetics to paleontology and mineralogy, joined with an almost equal number of other participants in a wide-ranging exploration of minimum cell size and the challenge of interpreting micro- and nano-scale features of sedimentary rocks found on Earth or elsewhere in the solar system. This document contains the proceedings of that workshop. It includes position papers presented by the individual panelists, arranged by panel, along with a summary, for each of the four sessions, of extensive roundtable discussions that involved the panelists as well as other workshop participants.

Monitoring Genetically Manipulated Microorganisms in the Environment

Author: Clive Edwards

Publisher: Wiley-Blackwell

Published: 1993

Total Pages: 218

ISBN-13:

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Monitoring Genetically Manipulated Microorganisms in the Environment Clive Edwards, Department of Genetics and Microbiology, University of Liverpool, UK Genetically-manipulated microorganisms (GEMs) have been proposed for a variety of applications that would involve their release into open environments that already harbour a diverse and often highly active microflora. This proposal is controversial, especially in view of the problems in studying the fate and survival of GEMs in natural ecosystems. This book describes methods for the detection of target organisms in heterogeneous populations. The tendency of some species to adopt viable but non-culturable states is addressed. Molecular genetic methods that have the potential to overcome this problem are presented. These are also illustrated by their application as detection methods in aquatic environments. Terrestrial habitats are discussed using a description of a contained microcosm for release and recovery of genetically modified Gram-positive bacteria. Detailed methods for the quantitative extraction of microorganisms from soil are reviewed, along with an overview of experimental systems that have attempted to define the fate of GEMs in soil as well as to assess gene transfer events. The final chapter deals with models that describe microbial interactions in the environment. Although the chapters in this book are principally aimed at those working with genetically manipulated microorganisms there is no doubt that much of what is discussed is equally applicable to increasing our understanding of microbial ecology in general.

Microbes in Land Use Change Management

Author: Jay Shankar Singh

Publisher: Elsevier

Published: 2021-08-20

Total Pages: 611

ISBN-13: 0323858945

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Microbes in Land Use Change Management details the various roles of microbial resources in management of land uses and how the microbes can be used for the source of income due to their cultivation for the purpose of biomass and bioenergy production. Using various techniques, the disturbed and marginal lands may also be restored eco-friendly in present era to fulfil the feeding needs of mankind around the globe. Microbes in Land Use Change Management provides standard and up to date information towards the land use change management using various microbial technologies to enhance the productivity of agriculture. Needless to say that Microbes in Land Use Change Management also considers the areas including generation of alternative energy sources, restoration of degraded and marginal lands, mitigation of global warming gases and next generation -omics technique etc. Land use change affects environment conditions and soil microbial community. Microbial population and its species diversity have influence in maintaining ecosystem balance. The study of changes of microbial population provides an idea about the variation occurring in a specific area and possibilities of restoration. Meant for a multidisciplinary audience Microbes in Land Use Change Management shows the need of next-generation omics technologies to explore microbial diversity. Describes the role of microbes in generation of alternative source of energy Gives recent information related to various microbial technology and their diversified applications Provides thorough insight in the problems related to landscape dynamics, restoration of soil, reclamation of lands mitigation of global warming gases etc. eco-friendly way using versatility of microbes Includes microbial tools and technology in reclamation of degraded, disturbed and marginal lands, mitigation of global warming gases

The Flagellar World

Author: Shin-Ichi Aizawa

Publisher: Elsevier

Published: 2013-12-16

Total Pages: 142

ISBN-13: 0124172830

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The Flagellar World is a unique publication. The product of years of research and data collection by the author, this book is a pictorial guide to flagella in a variety of organisms. Each EM image is accompanied by a short description of the system in each organism. These never-before-seen pictures represent a wide variety of flagella, including Legionella pneumophila, Escherichia coli, Pseudomonas aeruginosa, and many others. Researchers in microbiology, immunology, and parasitology will find this a fascinating and useful resource. A unique publication with many never before seen EM images of flagella A historical document of years of research on flagella Fills a specific niche that shows flagella in several varied organisms

Oceans and Health:

Author: Shimshon Belkin

Publisher: Springer

Published: 2010-10-05

Total Pages: 0

ISBN-13: 9781441920126

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It is surprising how little is actually known about the fate of wastewater bacteria once they enter the sea. This wide-ranging work is one of the first to unravel the mechanisms determining bacterial sensitivity or survival under these conditions.

Microbial Source Tracking

Author: Jorge W. Santo Domingo

Publisher: Emerging Issues in Food Safety

Published: 2007

Total Pages: 285

ISBN-13: 9781555813741

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Presents a state-of-the-art review of the current technology and applications being utilized to identify sources of fecal contamination in waterways. - Serves as a useful reference for researchers in the food industry, especially scientists investigating etiological agents responsible for food contamination. - Provides background information on MST methods and the assumptions and limitations associated with their use. - Covers a broad range of topics related to MST, including environmental monitoring, public health and national security, population biology, and microbial ecology. - Offers valuable insights into future research directions and technology developments.