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Author: F. Lenci
Publisher: Springer Science & Business Media
ISBN: 1468459880
Category : Science
Languages : en
Pages : 346
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Book Description
This volume contains the lectures given at the NATO Advanced Study Institute on "Biophysics of Photoreceptors and Photomovements in Microorganisms" held in Tir renia (Pisa), Italy, in September 1990. The Institute was sponsored and mainly funded by the Scientific Affairs Division of NATO; the Physical Science Committee and the Institute of Biophysics of National Research Council of Italy also supported the School and substantially contributed to its success. It is our pleasant duty to thank these institu tions. Scientists from very different backgrounds contributed to the understanding of this fast developing field of research, which has seen considerable progress during the last years. The areas of expertise ranged from behavioral sciences, supported by sophi sticated techniques such as image analysis or laser light scattering, to spectroscopy, ap plied, in different time domains, to the study of the primary photoreactions, to electro physiology, biochemistry or molecular biology, with the aim of analyzing the various steps of the transduction chains and how they control the motor apparatus of the cells. The organisms studied covered a wide range, from bacteria to algae, fungi and other eukaryotes. Thus, the ASI represented a successful opportunity for carrying on and imple menting an interdisciplinary approach to the study of the biophysical basis of photore ception and photosensory transduction in aneural organisms, with special attention to the basic phenomena and the underlying molecular events. We hope that this book has caught the spirit in which the ASI was conceived.
Author: F. Lenci
Publisher: Springer Science & Business Media
ISBN: 1468459880
Category : Science
Languages : en
Pages : 346
Get Book Here
Book Description
This volume contains the lectures given at the NATO Advanced Study Institute on "Biophysics of Photoreceptors and Photomovements in Microorganisms" held in Tir renia (Pisa), Italy, in September 1990. The Institute was sponsored and mainly funded by the Scientific Affairs Division of NATO; the Physical Science Committee and the Institute of Biophysics of National Research Council of Italy also supported the School and substantially contributed to its success. It is our pleasant duty to thank these institu tions. Scientists from very different backgrounds contributed to the understanding of this fast developing field of research, which has seen considerable progress during the last years. The areas of expertise ranged from behavioral sciences, supported by sophi sticated techniques such as image analysis or laser light scattering, to spectroscopy, ap plied, in different time domains, to the study of the primary photoreactions, to electro physiology, biochemistry or molecular biology, with the aim of analyzing the various steps of the transduction chains and how they control the motor apparatus of the cells. The organisms studied covered a wide range, from bacteria to algae, fungi and other eukaryotes. Thus, the ASI represented a successful opportunity for carrying on and imple menting an interdisciplinary approach to the study of the biophysical basis of photore ception and photosensory transduction in aneural organisms, with special attention to the basic phenomena and the underlying molecular events. We hope that this book has caught the spirit in which the ASI was conceived.
Author: D.-P. Häder
Publisher: Elsevier
ISBN: 008053886X
Category : Science
Languages : en
Pages : 959
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Book Description
This volume emphasizes the involvement of all facets of biology in the analysis of environmentally controlled movement responses. This includes biophysics, biochemistry, molecular biology and as an integral part of any approach to a closer understanding, physiology. The initial euphoria about molecular biology as the final solution for any problem has dwindled and the field agrees now that only the combined efforts of all facets of biology will at some day answer the question posed more than hundred years ago: "How can plants see?". One conclusion can be drawn from the current knowledge as summarized in this volume. The answer will most likely not be the same for all systems.
Author: Cloe Taddei-ferretti
Publisher: World Scientific
ISBN: 9814545759
Category :
Languages : en
Pages : 442
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Book Description
This is the first volume of new book series on biophysics and biocybernetics, initiated by the Istituto Italiano per gli Studi Filosofici.A main problem in biophysics is the interaction of light information with functional living structures, in order to shape the organism's behaviour. Although the processes of photoreception and phototransduction are articulated in various ways in different living beings — as it is seen in the subdivision of the topics in this volume on microorganisms, invertebrates, and vertebrates — general ways of light signal reception and transduction through light energy, i.e., photosensitive molecule interactions, could be observed. Highly sophisticated advanced techniques are employed in this research field.
Author: J.G. Jones
Publisher: Springer Science & Business Media
ISBN: 1475790740
Category : Medical
Languages : en
Pages : 368
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Book Description
This is the third volume of Advances in Microbial Ecology to be produced by the current editorial board. I would, therefore, like to take this opportunity to thank my co-editors for all their efforts, particularly in maintaining a balance of subject matter and geographical distribution of the contributions. Volume 15 is no exception in that we have a balance between the prokaryo tic and eukaryotic organisms and a range of subject matter from applied ecology through process ecology to ecological theory. The response from our readers has been encouraging in the sense that the breadth of coverage is much appreciated, particularly by teachers and postgraduate/postdoctoral researchers. However, we still strive to improve our coverage and particularly to move wider than the North America/Europe axis for contributions. Similarly, we would like to see coverage of the more unusual microbes, perhaps a chapter devoted to the ecology of a particular species or genus. There must exist many ecological notes on "rarer" organisms that have not found their way into the standard textbooks or taxonomic volumes; properly compiled these could provide valuable information for the field ecologist. Ecological theory has, until recently, been the domain of the "macroecolo gist. " Recent advances in molecular techniques will ensure that the microbial ecologist will playa more significant role in the development of the subject. We shall not, therefore, change our policy of encouraging our contributors to specu late, permitting them sufficient space to develop their ideas.
Author: Robert C. Jennings
Publisher: Springer Science & Business Media
ISBN: 1461304091
Category : Science
Languages : en
Pages : 310
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Book Description
A NATO Advanced Study Institute on "Light as Energy Source and Information Carrier in Plant Photo physiology" was held at Volterra, Italy, from September 26 to October 6, 1994, in order to consider the fundamental role that light plays in plant growth and development. This book summarises the main lectures given at this meeting which concentrated on both photochemical energy conversion and signalling (photosensing) aspects. Light harvesting and conversion into chemical energy in photosynthesis occurs at the level of chlorophyll/carotenoid containing photosystems in plants. Pigments are non covalently bound to a variety of polypeptides which serve as a specific scaffolding, necessary to determine the energy coupling between pigments and thus allowing rapid excitation energy trasfer from the antenna to the special reaction centre chlorophylls. Data from transient, time resolved spectroscopies, in the femtosecond and picosecond domain, together with model calculations, suggest that this process occurs in the 20-100 picosecond time span. The special ~ll u~ture of reaction centre complexes, ensures rapid primary charge separation, probably in the order of 1-3 picoseconds, with subsequent charge stabilisation reactions proceeding in the hundreds of picoseconds range. The recently resolved crystallographic structure of LHCII, the principal antenna complex of plants, allows precise determination of pigment-pigment distances and thus permits calculation of approximate chlorophyll-chlorophyll Forster hopping rates, which are in good agreement with time resolved measurements.
Author: M. H. F. Wilkinson
Publisher: John Wiley & Sons
ISBN: 9780471974406
Category : Science
Languages : en
Pages : 588
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Book Description
Providing specific knowledge in the theory of image analysis, optics, fluorescence, and imaging devices in biomedical laboratories, this timely and indispensable volume focuses on the theory and applications of detection, morphometry, and motility measurement techniques applied to bacteria, fungi, yeasts and protozoa.
Author: Peter A. Ensminger
Publisher: Yale University Press
ISBN: 0300133529
Category : Science
Languages : en
Pages : 288
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Book Description
Which fungus is as sensitive to light as the human eye? What are the myths and facts about the ozone hole, tanning, skin cancer, and sunscreens? What is the effect of light on butterfly copulation? This entertaining collection of essays explores how various organisms -- including archaebacteria, slime molds, fungi, plants, insects, and humans -- sense and respond to sunlight. The essays in Peter A. Ensminger's book cover vision, photosynthesis, and phototropism, as well as such unusual topics as the reason why light causes beer to develop a "skunky" odor. He introducec us to the kinds of eyes that have evolved in different animals, including those in a species of shrimp that is ostensibly eyeless; gives us a better appreciation of color vision; explains how plowing fields at night may be used to control weeds; and tells about variegate porphyria, a metabolic disease that makes people very sensitive to sunlight and may have afflicted King George III of England. These engaging essays present a complicated yet fascinating subject in an accessible way. The book will be treasured by anyone interested in the wonders of biology.
Author: Eberhard Schäfer
Publisher: Springer Science & Business Media
ISBN: 9781402038099
Category : Nature
Languages : en
Pages : 728
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Book Description
Plants as sessile organisms have evolved fascinating capacities to adapt to changes in their natural environment. Arguably, light is by far the most important and variable environmental factor. The quality, quantity, direction and duration of light is monitored by a series of photoreceptors covering spectral information from UVB to near infrared. The response of the plants to light is called photomorphogenesis and it is regulated by the concerted action of photoreceptors. The combined techniques of action spectroscopy and biochemistry allowed one of the important photoreceptors – phytochrome – to be identified in the middle of the last century. An enormous number of physiological studies published in the last century describe the properties of phytochrome and its function and also the physiology of blue and UV-B photoreceptors, unidentified at the time. This knowledge was summarized in the advanced textbook “Photomorphogenesis in Plants” (Kendrick and Kronenberg, eds., 1986, 1994). With the advent of molecular biology, genetics and new molecular, cellular techniques, our knowledge in the field of photomorphogenesis has dramatically increased over the last 15 years.
Author: Society for General Microbiology. Symposium
Publisher: Cambridge University Press
ISBN: 9780521622868
Category : Medical
Languages : en
Pages : 344
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Book Description
An up-to-date review of the importance of light as a biologically active environmental cue.
Author: Barry S. C. Leadbeater
Publisher: CRC Press
ISBN: 0203484819
Category : Science
Languages : en
Pages : 414
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Book Description
The Flagellates presents a multidisciplinary view of the flagellates exploring both their unity, in terms of their structure, mechanisms and processes, and their diversity in terms of biogeography, niche colonisation, and adaptations to their environment. In addition, evolutionary relationships amongst flagellates are explored. This is the only book published on this subject and features the most up to date information available making it an essential read for any one interested in or working in this field.
