Ultrastructural Plasticity Of Cyanobacteria

Author : Olga I. Baulina
Publisher : Springer Science & Business Media
Page : 210 pages
File Size : 49,7 Mb
Release : 2012-10-28
Category : Science
ISBN : 9783642327810

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Ultrastructural Plasticity of Cyanobacteria by Olga I. Baulina Pdf

This book offers an in-depth analysis of the cell biology of cyanobacteria, a group of phototrophic microorganisms performing an important function in the biosphere. The chapters present the author’s and her colleagues’ pioneering investigations of the ultrastructure of cyanobacteria under high-light and dark conditions, during irradiation by extremely high fluxes of light, in the course of L-transformation and within model associations and natural symbioses with plants. Diverse patterns of ultrastructural change are illustrated in electron micrographs and schematics. The book further introduces a new concept of “bacterial ultrastructural plasticity” - the reversible rearrangement of ultrastructure in response to environmental changes, as a strategy for finding and investigating cell adaptation mechanisms and intraspecies structural diversity of cyanobacteria and other prokaryotes. It serves as a valuable guide for teaching and research in the field of cell biology of microorganisms and plant-cyanobacteria symbioses.

Author : Michele Grieco,Fiamma Longoni,Stefano Santabarbara,Jeremy Harbinson
Publisher : Frontiers Media SA
Page : 189 pages
File Size : 42,8 Mb
Release : 2023-06-27
Category : Science
ISBN : 9782832527900

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Photosynthesis Under Fluctuating Light by Michele Grieco,Fiamma Longoni,Stefano Santabarbara,Jeremy Harbinson Pdf

Photosynthesis is a fundamental process that drives almost all life on Earth, and is the motor of agriculture and food production. For several decades, its basic functioning has been investigated mainly at steady-state, under constant illumination. This approach was necessary to understand the basic mechanisms underlying the light reactions and carbon assimilation. However, this condition does not reflect the natural environment, where plants experience changes in both the intensity and spectrum of irradiance in a wide range of time scales, spanning from seconds to several hours. In recent years, it has become clear that the processes allowing the photosynthetic apparatus to adapt to changes in irradiance are of paramount importance to plant fitness and productivity. Therefore, increased research effort has been directed towards studying the regulation of photosynthetic activity under fluctuating light, i.e. upon the variation of light intensity or light spectrum. This is important for understanding how photosynthetic organisms cope with natural environmental conditions. Fluctuating light itself constitutes a potentially stressful condition, because, depending on the scale of the fluctuation, it can transiently generate extreme redox and transthylakoid potentials, and forces the photosynthetic machinery to be re-adjusted. Not surprisingly, plants have evolved several mechanisms allowing a prompt response to these normal environmental events. In natural environments, photosynthetic organisms often have to cope with fluctuating light while experiencing other kinds of stress, such as heat, nutrient deficiency, drought, and pathogen attacks. Therefore, the study of combined stresses is essential for understanding the acclimation to realistic environmental conditions.

Author : John D. Wehr,Robert G. Sheath,J. Patrick Kociolek
Publisher : Elsevier
Page : 1066 pages
File Size : 49,9 Mb
Release : 2015-06-05
Category : Science
ISBN : 9780123858771

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Freshwater Algae of North America by John D. Wehr,Robert G. Sheath,J. Patrick Kociolek Pdf

Freshwater Algae of North America: Ecology and Classification, Second Edition is an authoritative and practical treatise on the classification, biodiversity, and ecology of all known genera of freshwater algae from North America. The book provides essential taxonomic and ecological information about one of the most diverse and ubiquitous groups of organisms on earth. This single volume brings together experts on all the groups of algae that occur in fresh waters (also soils, snow, and extreme inland environments). In the decade since the first edition, there has been an explosion of new information on the classification, ecology, and biogeography of many groups of algae, with the use of molecular techniques and renewed interest in biological diversity. Accordingly, this new edition covers updated classification information of most algal groups and the reassignment of many genera and species, as well as new research on harmful algal blooms. Extensive and complete Describes every genus of freshwater algae known from North America, with an analytical dichotomous key, descriptions of diagnostic features, and at least one image of every genus. Full-color images throughout provide superb visual examples of freshwater algae Updated Environmental Issues and Classifications, including new information on harmful algal blooms (HAB) Fully revised introductory chapters, including new topics on biodiversity, and taste and odor problems Updated to reflect the rapid advances in algal classification and taxonomy due to the widespread use of DNA technologies

Author : A.K. Mishra,D.N. Tiwari,A.N. Rai
Publisher : Academic Press
Page : 541 pages
File Size : 43,7 Mb
Release : 2018-11-30
Category : Science
ISBN : 9780128146682

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Cyanobacteria by A.K. Mishra,D.N. Tiwari,A.N. Rai Pdf

Cyanobacteria constitute the most widely distributed group of photosynthetic prokaryotes found in almost all realms of the earth and play an important role in Earth’s nitrogen and carbon cycle. The gradual transformation from reducing atmosphere to oxidizing atmosphere was a turning point in the evolutionary history of the earth and made conditions for present life forms possible. Cyanobacteria: From Basic Science to Applications is the first reference volume that comprehensively discusses all aspects of cyanobacteria, including the diverse mechanisms of cyanobacteria for the advancement of cyanobacterial abilities, towards higher biofuel productivity, enhanced tolerance to environmental stress and bioactive compounds and potential for biofertilizers. Describes cyanobacterial diversity, stress biology, and biotechnological aspects of cyanobacteria Explores the global importance of cyanobacteria Provides a broad compilation of research that deals with cyanobacterial stress responses in both controlled laboratory conditions as well as in their natural environment

Author : Brian A. Whitton
Publisher : Springer Science & Business Media
Page : 760 pages
File Size : 48,9 Mb
Release : 2012-07-05
Category : Science
ISBN : 9789400738553

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Ecology of Cyanobacteria II by Brian A. Whitton Pdf

Cyanobacteria have existed for 3.5 billion years, yet they are still the most important photosynthetic organisms on the planet for cycling carbon and nitrogen. The ecosystems where they have key roles range from the warmer oceans to many Antarctic sites. They also include dense nuisance growths in nutrient-rich lakes and nitrogen-fixers which aid the fertility of rice-fields and many soils, especially the biological soil crusts of arid regions. Molecular biology has in recent years provided major advances in our understanding of cyanobacterial ecology. Perhaps for more than any other group of organisms, it is possible to see how the ecology, physiology, biochemistry, ultrastructure and molecular biology interact. This all helps to deal with practical problems such as the control of nuisance blooms and the use of cyanobacterial inocula to manage semi-desert soils. Large-scale culture of several organisms, especially "Spirulina" (Arthrospira), for health food and specialist products is increasingly being expanded for a much wider range of uses. In view of their probable contribution to past oil deposits, much attention is currently focused on their potential as a source of biofuel. Please visit http://extras.springer.com/ to view Extra Materials belonging to this volume. This book complements the highly successful Ecology of Cyanobacteria and integrates the discoveries of the past twelve years with the older literature.

Author : A.N. Rai,B. Bergman,Ulla Rasmussen
Publisher : Springer Science & Business Media
Page : 355 pages
File Size : 43,5 Mb
Release : 2007-05-08
Category : Science
ISBN : 9780306480058

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Cyanobacteria in Symbiosis by A.N. Rai,B. Bergman,Ulla Rasmussen Pdf

Cyanobacterial symbioses are no longer regarded as mere oddities but as important components of the biosphere, occurring both in terrestrial and aquatic habitats worldwide. It is becoming apparent that they can enter into symbiosis with a wider variety of organisms than hitherto known, and there are many more still to be discovered, particularly in marine environments. The chapters cover cyanobacterial symbioses with plants (algae, bryophytes, Azolla, cycads, Gunnera), cyanobacterial symbioses in marine environments, lichens, Nostoc-Geosiphon (a fungus closely related to arbuscular mycorrhiza fungi) symbiosis, and artificial associations of cyanobacteria with economically important plants. In addition, cyanobiont diversity, sensing-signalling, and evolutionary aspects of the symbiosis are dealt with. Renowned experts actively involved in research on cyanobacterial symbioses deal with ecological, physiological, biochemical, molecular, and applied aspects of all known cyanobacterial symbioses. This volume on cyanobacteria in symbiosis complements the two earlier volumes on cyanobacteria published by Kluwer (Molecular Biology of Cyanobacteria, edited by D.A. Bryant and Ecology of Cyanobacteria, edited by B.A. Whitton and M. Potts). Together, the three volumes provide the most comprehensive treatment of cyanobacterial literature as a whole. The book will serve as a valuable reference work and text for teaching and research in the field of plant-microbe interactions and nitrogen fixation.

Author : Ingrid Chorus,Martin Welker
Publisher : CRC Press
Page : 840 pages
File Size : 48,7 Mb
Release : 2021-03-08
Category : Technology & Engineering
ISBN : 9781000262025

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Toxic Cyanobacteria in Water by Ingrid Chorus,Martin Welker Pdf

Cyanobacterial toxins are among the hazardous substances most widely found in water. They occur naturally, but concentrations hazardous to human health are usually due to human activity. Therefore, to protect human health, managing lakes, reservoirs and rivers to prevent cyanobacterial blooms is critical. This second edition of Toxic Cyanobacteria in Water presents the current state of knowledge on the occurrence of cyanobacteria and cyanotoxins as well as their impacts on health through water-related exposure pathways, chiefly drinking-water and recreational activity. It provides scientific and technical background information to support hazard identification, assessment and prioritisation of the risks posed by cyanotoxins, and it outlines approaches for their management at each step of the water-use system. It sets out key practical considerations for developing management strategies, implementing efficient measures and designing monitoring programmes. This enables stakeholders to evaluate whether there is a health risk from toxic cyanobacteria and to mitigate it with appropriate measures. This book is intended for those working on toxic cyanobacteria with a specific focus on public health protection. It intends to empower professionals from different disciplines to communicate and cooperate for sustainable management of toxic cyanobacteria, including public health workers, ecologists, academics, and catchment and waterbody managers. Ingrid Chorus headed the department for Drinking-Water and Swimming-Pool Hygiene at the German Environment Agency. Martin Welker is a limnologist and microbiologist, currently with bioMérieux in Lyon, France.

Author : B.A. Whitton,M. Potts
Publisher : Springer Science & Business Media
Page : 669 pages
File Size : 45,8 Mb
Release : 2007-05-08
Category : Science
ISBN : 9780306468551

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The Ecology of Cyanobacteria by B.A. Whitton,M. Potts Pdf

Cyanobacteria make a major contribution to world photosynthesis and nitrogen fixation, but are also notorious for causing nuisances such as dense and often toxic `blooms' in lakes and the ocean. The Ecology of Cyanobacteria: Their Diversity in Time and Space is the first book to focus solely on ecological aspects of these organisms. Its twenty-two chapters are written by some thirty authors, who are leading experts in their particular subject. The book begins with an overview of the cyanobacteria - or blue-green algae, for those who are not specialists - then looks at their diversity in the geological record and goes on to describe their ecology in present environments where they play important roles. Why is one of the key groups of organisms in the Precambrian still one of the most important groups of phototrophs today? The importance of ecological information for rational management and exploitation of these organisms for commercial and other practical purposes is also assessed. Accounts are provided of nuisances as well as the ecology of the commercially successful Spirulina and the role of cyanobacteria in ecosystem recovery from oil pollution. Many chapters include aspects of physiology, biochemistry, geochemistry and molecular biology where these help general understanding of the subject. In addition there are three chapters dealing specifically with molecular ecology. Thirty-two pages of colour photos incorporate about seventy views and light micrographs. These features make the book valuable to a wide readership, including biologists, microbiologists, geologists, water managers and environmental consultants. The book complements the highly successful The Molecular Biology of Cyanobacteria already published by Kluwer.

Author : Wael N. Hozzein
Publisher : BoD – Books on Demand
Page : 106 pages
File Size : 44,6 Mb
Release : 2022-01-12
Category : Science
ISBN : 9781839624896

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Cyanobacteria by Wael N. Hozzein Pdf

Cyanobacteria are oxygenic organisms that play crucial roles in the cycles of carbon, nitrogen, and oxygen. They are ideal model organisms for studying photosynthesis, nitrogen fixation, and other biological processes. In addition, cyanobacteria are well recognized for their potential for a variety of biotechnological applications. This book presents a comprehensive overview of this interesting and useful group of bacteria. Chapters discuss such topics as the molecular methods applied for identifying freshwater toxigenic cyanobacteria, the diverse industrial applications of cyanobacteria, the potential of cyanobacteria in wound healing, the production of a novel hemoglobin by Synechocystis sp. PCC 6803, and the diversity, distribution, and applications of cyanobacteria in the Brazilian coastline.

Author : Barbara Demmig-Adams,Gyozo Garab,William Adams III,Govindjee
Publisher : Springer
Page : 649 pages
File Size : 46,6 Mb
Release : 2014-11-22
Category : Science
ISBN : 9789401790321

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Non-Photochemical Quenching and Energy Dissipation in Plants, Algae and Cyanobacteria by Barbara Demmig-Adams,Gyozo Garab,William Adams III,Govindjee Pdf

Harnessing the sun’s energy via photosynthesis is at the core of sustainable production of food, fuel, and materials by plants, algae, and cyanobacteria. Photosynthesis depends on photoprotection against intense sunlight, starting with the safe removal of excess excitation energy from the light-harvesting system, which can be quickly and non-destructively assessed via non-photochemical quenching of chlorophyll fluorescence (NPQ). By placing NPQ into the context of whole-organism function, this book aims to contribute towards identification of plant and algal lines with superior stress resistance and productivity. By addressing agreements and open questions concerning photoprotection’s molecular mechanisms, this book contributes towards development of artificial photosynthetic systems. A comprehensive picture –from single molecules to organisms in ecosystems, and from leading expert’s views to practical information for non-specialists on NPQ measurement and terminology – is presented.

Author : Loïc Charpy,A. W. D. Larkum
Publisher : Musee Oceanographique
Page : 644 pages
File Size : 51,6 Mb
Release : 1999
Category : Science
ISBN : UOM:39015042952146

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Marine Cyanobacteria by Loïc Charpy,A. W. D. Larkum Pdf

Author : Francis Rice Trainor
Publisher : Unknown
Page : 390 pages
File Size : 40,8 Mb
Release : 1998
Category : Adaptation (Biology)
ISBN : UCSD:31822009132259

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Biological Aspects of Scenedesmus (Chlorophyceae) - Phenotypic Plasticity by Francis Rice Trainor Pdf

Scenedesmus is is a cosmopolitan green freshwater algae. Because of the colonial symmetry of Scenedesmus, its size/shape differences and abundant cytological features (both LM and EM), it first seemed that individuals could easily be distinguished and classified. Because biologists often examined samples of Scenedesmus taxa at only one point in time, they tacitly assumed that there was stability of form. Are there data confirming stability of form? On the other hand, preserved collections are not useful material to support an alternate hypothesis. The result: hundreds of species and innumerable subspecific taxa were identified and described. In Scenedesmus Phenotypic Plasticity the author presents - Early reports of variability or polymorphism, along with their routine dismissal as supposedly irrelevant observations. - Chapters concerned with geographical distribution, culture techniques, history and the Scenedesmus unicell, indicating the need for the renaissance of the phenotype. The concept of an ordered developmental sequence is developed and discussed. Data from numerous laboratories, whether cytological, morphological, biochemical, ecological or physiological, which lend support to the concept of plasticity in all strains. Numerous supposed taxa are but ecomorphs of rather complex taxa.

Author : Rainer Kurmayer,Kaarina Sivonen,Annick Wilmotte,Nico Salmaso
Publisher : John Wiley & Sons
Page : 446 pages
File Size : 51,9 Mb
Release : 2017-09-05
Category : Science
ISBN : 9781119332107

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Molecular Tools for the Detection and Quantification of Toxigenic Cyanobacteria by Rainer Kurmayer,Kaarina Sivonen,Annick Wilmotte,Nico Salmaso Pdf

A guide to state-of-the-art molecular tools for monitoring and managing the toxigenicity of cyanobacteria Runaway eutrophication and climate change has made the monitoring and management of toxigenic organisms in the world’s bodies of water more urgent than ever. In order to influence public policy regarding the detection and quantification of those organisms, it is incumbent upon scientists to raise the awareness of policy makers concerning the increased occurrence of toxigenic cyanobacteria and the threats they pose. As molecular methods can handle many samples in short time and help identify toxigenic organisms, they are reliable, cost-effective tools available for tracking toxigenic cyanobacteria worldwide. This volume arms scientists with the tools they need to track toxigenicity in surface waters and food supplies and, hopefully, to develop new techniques for managing the spread of toxic cyanobacteria. This handbook offers the first comprehensive treatment of molecular tools for monitoring toxigenic cyanobacteria. Growing out of the findings of the landmark European Cooperation in Science and Technology Cyanobacteria project (CYANOCOST), it provides detailed, practical coverage of the full array of available molecular tools and protocols, from water sampling, nucleic acid extraction, and downstream analysis—including PCR and qPCR based methods—to genotyping (DGGE), diagnostic microarrays, and community characterization using next-gen sequencing techniques. Offers an overview of the latest trends in the field, while providing a foundation for understanding and applying the tools and techniques described Provides detailed coverage of the full range of molecular tools currently available, with expert guidance on the analysis and interpretation of results Includes step-by-step guidance on standard operational procedures, including molecular tests used in environmental monitoring, with individual chapters devoted to each procedure Complements the published Handbook of Cyanobacterial Monitoring and Cyanotoxin Analysis from the CyanoCOST project This handbook is an indispensable working resource for scientists, lab technicians, and water management professionals and an excellent text/reference for graduate students and supervisors who use molecular tools. It will also be of great value to environmental health and protection officials and policy makers.

Author : Jason Robert Gerstner,H. Craig Heller,Sara J. Aton
Publisher : Frontiers Media SA
Page : 122 pages
File Size : 47,9 Mb
Release : 2016-01-15
Category : Electronic book
ISBN : 9782889197460

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Sleep and Chronobiology in Plasticity and Memory by Jason Robert Gerstner,H. Craig Heller,Sara J. Aton Pdf

Chronobiological mechanisms regulating time-of-day mediated behaviors, such as sleep and circadian rhythms, are thought to interact with and/or share cellular and molecular signaling cascades that shape synaptic plasticity and neural excitability. These same factors are also known to underlie events that govern higher-order cognitive processing, including learning and memory formation, and often through phylogenetically conserved pathways. This suggests that factors which contribute to adaptive responses to changing environmental stimuli are likely derived from basic evolutionarily ancient processes, and underscores the importance of using both invertebrate and vertebrate models to study the interaction of chronobiology and cognitive processing. This issue highlights current views along with original research on sleep and circadian features of plasticity and memory in multiple species, models, and systems.

Author : Rainer Kurmayer,Kaarina Sivonen,Annick Wilmotte,Nico Salmaso
Publisher : John Wiley & Sons
Page : 440 pages
File Size : 46,7 Mb
Release : 2017-06-29
Category : Science
ISBN : 9781119332145

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Molecular Tools for the Detection and Quantification of Toxigenic Cyanobacteria by Rainer Kurmayer,Kaarina Sivonen,Annick Wilmotte,Nico Salmaso Pdf

A guide to state-of-the-art molecular tools for monitoring and managing the toxigenicity of cyanobacteria Runaway eutrophication and climate change has made the monitoring and management of toxigenic organisms in the world’s bodies of water more urgent than ever. In order to influence public policy regarding the detection and quantification of those organisms, it is incumbent upon scientists to raise the awareness of policy makers concerning the increased occurrence of toxigenic cyanobacteria and the threats they pose. As molecular methods can handle many samples in short time and help identify toxigenic organisms, they are reliable, cost-effective tools available for tracking toxigenic cyanobacteria worldwide. This volume arms scientists with the tools they need to track toxigenicity in surface waters and food supplies and, hopefully, to develop new techniques for managing the spread of toxic cyanobacteria. This handbook offers the first comprehensive treatment of molecular tools for monitoring toxigenic cyanobacteria. Growing out of the findings of the landmark European Cooperation in Science and Technology Cyanobacteria project (CYANOCOST), it provides detailed, practical coverage of the full array of available molecular tools and protocols, from water sampling, nucleic acid extraction, and downstream analysis—including PCR and qPCR based methods—to genotyping (DGGE), diagnostic microarrays, and community characterization using next-gen sequencing techniques. Offers an overview of the latest trends in the field, while providing a foundation for understanding and applying the tools and techniques described Provides detailed coverage of the full range of molecular tools currently available, with expert guidance on the analysis and interpretation of results Includes step-by-step guidance on standard operational procedures, including molecular tests used in environmental monitoring, with individual chapters devoted to each procedure Complements the published Handbook of Cyanobacterial Monitoring and Cyanotoxin Analysis from the CyanoCOST project This handbook is an indispensable working resource for scientists, lab technicians, and water management professionals and an excellent text/reference for graduate students and supervisors who use molecular tools. It will also be of great value to environmental health and protection officials and policy makers.