Download or read book Analysis and Application of the Fast Chl a Fluorescence OJIP Transient Complemented with Simultaneous 820 Nm Transmission Measurements written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le domaine de la recherche de la photosynthèse, la cinétique de la fluorescence de la chlorophylle (OJIP) est une des méthodes les plus courantes. Cette méthode très sensible permet de mesurer "in vivo" l'activité photosynthétique. Cependant, il subsiste plusieurs questions fondamentales concernant son interprétation. Dans cette thèse, nous avons démontré que la cinétique OJIP reflète la réduction de la chaîne de transfert d'électrons et que ses étapes intermédiaires expriment les étapes déterminantes lors du transfert d'électrons. Le deuxième but de cette thèse était d'étendre l'applicabilité de la cinétique OJIP. Un modèle, décrivant la régénération de l'activité photosynthétique après un stress de chaleur, a été créé. Nous avons aussi montré que des donneurs d'électrons alternatifs existent et qu'ils fonctionnent quand le côté donneur du photosystème II est détruit. Nous avons également développé une méthode pour déterminer l'état redox du pool de plastoquinone.
Download or read book Analysis and Application of the Fast Chl a Fluorescence OJIP Transient Complemented with Simultaneous 820 Nm Transmission Measurements written by Szilvia Zita Tóth and published by . This book was released on 2006 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans le domaine de la recherche de la photosynthèse, la cinétique de la fluorescence de la chlorophylle (OJIP) est une des méthodes les plus courantes. Cette méthode très sensible permet de mesurer "in vivo" l'activité photosynthétique. Cependant, il subsiste plusieurs questions fondamentales concernant son interprétation. Dans cette thèse, nous avons démontré que la cinétique OJIP reflète la réduction de la chaîne de transfert d'électrons et que ses étapes intermédiaires expriment les étapes déterminantes lors du transfert d'électrons. Le deuxième but de cette thèse était d'étendre l'applicabilité de la cinétique OJIP. Un modèle, décrivant la régénération de l'activité photosynthétique après un stress de chaleur, a été créé. Nous avons aussi montré que des donneurs d'électrons alternatifs existent et qu'ils fonctionnent quand le côté donneur du photosystème II est détruit. Nous avons également développé une méthode pour déterminer l'état redox du pool de plastoquinone.
Download or read book Phenomics in Crop Plants Trends Options and Limitations written by Jitendra Kumar and published by Springer. This book was released on 2015-03-05 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identification of desirable genotypes with traits of interest is discernible for making genetic improvement of crop plants. In this direction, screening of a large number of germplasm for desirable traits and transfer of identified traits into agronomic backgrounds through recombination breeding is the common breeding approach. Although visual screening is easier for qualitative traits, its use is not much effective for quantitative traits and also for those, which are difficult to score visually. Therefore, it is imperative to phenotype the germplasm accessions and breeding materials precisely using high throughput phenomics tools for challenging and complex traits under natural, controlled and harsh environmental conditions. Realizing the importance of phenotyping data towards identification and utilization of a germplasm as donors, global scientific community has exerted increased focus on advancing phenomics in crop plants leading to development of a number of techniques and methodologies for screening of agronomic, physiological, and biochemical traits. These technologies have now become much advanced and entered the era of digital science. This book provides exhaustive information on various aspects related to phenotyping of crop plants and offers a most comprehensive reference on the developments made in traditional and high throughput phenotyping of agricultural crops.
Download or read book Chlorophyll a Fluorescence written by G.C. Papageorgiou and published by Springer Science & Business Media. This book was released on 2007-11-12 with total page 853 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chlorophyll a Fluorescence: A Signature of Photosynthesis highlights chlorophyll (Chl) a fluorescence as a convenient, non-invasive, highly sensitive, rapid and quantitative probe of oxygenic photosynthesis. Thirty-one chapters, authored by 58 international experts, provide a solid foundation of the basic theory, as well as of the application of the rich information contained in the Chl a fluorescence signal as it relates to photosynthesis and plant productivity. Although the primary photochemical reactions of photosynthesis are highly efficient, a small fraction of absorbed photons escapes as Chl fluorescence, and this fraction varies with metabolic state, providing a basis for monitoring quantitatively various processes of photosynthesis. The book explains the mechanisms with which plants defend themselves against environmental stresses (excessive light, extreme temperatures, drought, hyper-osmolarity, heavy metals and UV). It also includes discussion on fluorescence imaging of leaves and cells and the remote sensing of Chl fluorescence from terrestrial, airborne, and satellite bases. The book is intended for use by graduate students, beginning researchers and advanced undergraduates in the areas of integrative plant biology, cellular and molecular biology, plant biology, biochemistry, biophysics, plant physiology, global ecology and agriculture.
Download or read book Photosystem II written by T. Wydrzynski and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most mysterious part of photosynthesis yet the most important for all aerobic life on Earth (including ourselves) is how green plants, algae and cyanobacteria make atmospheric oxygen from water. This thermodynamically difficult process is only achieved in Nature by the unique pigment/protein complex known as Photosystem II, using sunlight to power the reaction. The present volume contains 34 comprehensive chapters authored by 75 scientific experts from around the world. It gives an up-to-date account on all what is currently known about the molecular biology, biochemistry, biophysics and physiology of Photosystem II. The book is divided into several parts detailing the protein constituents, functional sites, tertiary structure, molecular dynamics, and mechanisms of homeostasis. The book ends with a comparison of Photosystem II with other related enzymes and bio-mimetic systems. Since the unique water-splitting chemistry catalyzed by Photosystem II leads to the production of pure oxygen gas and has the potential for making hydrogen gas, a primary goal of this book is to provide a molecular guide to future protein engineers and bio-mimetic chemists in the development of biocatalysts for the generation of clean, renewable energy from sunlight and water.
Download or read book Probing Photosynthesis written by Mohammad Yunus and published by CRC Press. This book was released on 2014-04-21 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Probing Photosynthesis represents the cutting edge of research on photosynthesis and provides details of experimental approaches that have been adopted to understand it's complex regulatory and adaptive processes. Its twenty seven chapters have been divided into four sections: Evolution, structure and function; Biodiversity metabolism and regulatio
Download or read book Light Emission By Plants and Bacteria written by Jan Amesz and published by Elsevier. This book was released on 2012-12-02 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light Emission by Plants and Bacteria deals mainly with light coming from plants and bacteria as a result of various different reactions. This book emphasizes the light emission from photosynthetic organisms. The major aim of this book is to give insight on light emission studies in plant and bacteria in terms of its physiological, biophysical, and biochemical relevance. The book is divided into six parts. Part I serves as an introduction and at the same time a historical review and development of different concepts of the emission phenomena. Part II tackles the relationship of light emission to the various photosynthetic reactions. Part III discusses the concept of bioluminescence, with a focus on bacteria and dinoflagellates. Part IV is a description of the light emission from bacteriorhodopsin and rhodopsin. Part V discusses the special light emission characteristics and their relationship to specialized pigment systems found in different bacteria and plant groups. It also reviews the fluorescence properties of photosynthetic bacteria. Lastly, Part VI basically shows the practical applications of light emission from algae as well as higher plants. This book contains not only relevant information about theories and concepts, but also experiments. Thus, it is a recommended reference to researchers and students alike in the field of cell biology, microbiology, plant physiology, biochemistry, biophysics, and agriculture.
Download or read book Plant Electrophysiology written by Alexander G. Volkov and published by Springer Science & Business Media. This book was released on 2007-04-19 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles new findings in plant electrophysiology from the work of internationally renowned experts in the fields of electrophysiology, bio-electrochemistry, biophysics, signal transduction, phloem transport, tropisms, ion channels, plant electrochemistry, and membrane transport. Opening with a historical introduction, the book reviews methods in plant electrophysiology, introducing such topics as measuring membrane potentials and ion fluxes, path-clamp technique, and electrochemical sensors. The coverage includes experimental results and their theoretical interpretation.
Download or read book Salinity Responses and Tolerance in Plants Volume 1 written by Vinay Kumar and published by Springer. This book was released on 2018-04-05 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil salinity is a key abiotic-stress and poses serious threats to crop yields and quality of produce. Owing to the underlying complexity, conventional breeding programs have met with limited success. Even genetic engineering approaches, via transferring/overexpressing a single ‘direct action gene’ per event did not yield optimal results. Nevertheless, the biotechnological advents in last decade coupled with the availability of genomic sequences of major crops and model plants have opened new vistas for understanding salinity-responses and improving salinity tolerance in important glycophytic crops. Our goal is to summarize these findings for those who wish to understand and target the molecular mechanisms for producing salt-tolerant and high-yielding crops. Through this 2-volume book series, we critically assess the potential venues for imparting salt stress tolerance to major crops in the post-genomic era. Accordingly, perspectives on improving crop salinity tolerance by targeting the sensory, ion-transport and signaling mechanisms are presented here in volume 1. Volume 2 will focus on the potency of post-genomic era tools that include RNAi, genomic intervention, genome editing and systems biology approaches for producing salt tolerant crops.
Download or read book Handbook of Plant Ecophysiology Techniques written by M. J. Reigosa Roger and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Plant Ecophysiology Techniques you have now in your hands is the result of several combined events and efforts. The birth of this handbook can be traced as far as 1997, when our Plant Ecophysiology lab at the University of Vigo hosted a practical course on Plant Ecophysiology Techniques. That course showed us how much useful a handbook presenting a bunch of techniques would be for the scientists beginning to work on Plant Ecophysiology. In fact, we wrote a short handbook explaining the basics of the techniques taught in that 1997 course: Flow cytometry to measure ploidy levels, Use of a Steady-State porometer to measure transpiration, In vivo measure of fluorescence, HPLC analysis of low molecular weight phenolics, Spectrophotometric determinations of free proline and soluble proteins, TLC polyamines contents measures, Isoenzymatic electrophoresis, Use of IRGA and oxygen electrode. That modest handbook, written in Spanish, was very helpful, both for the people who attended the course and for other who have used it for beginning to work in Plant Ecophysiology. The present Handbook is much more ambitious, and it includes more techniques. But we have also had in mind the young scientists beginning to work on Plant Ecophysiology. In 1999 François Pellissier leaded a proposal presented to the European Commission in the Fifth Framework Program in the High Level * Scientific Conferences, including three EuroLab Courses about lab and field techniques useful to improve allelopathic research.
Download or read book Biochemical Models of Leaf Photosynthesis written by Susanna Von Caemmerer and published by CSIRO PUBLISHING. This book was released on 2000 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing concerns of global climatic change have stimulated research in all aspects of carbon exchange. This has restored interest in leaf-photosynthetic models to predict and assess changes in photosynthetic CO2 assimilation in different environments. This is a comprehensive presentation of the most widely used models of steady-state photosynthesis by an author who is a world authority. Treatments of C3, C4 and intermediate pathways of photosynthesis in relation to environment have been updated to include work on antisense transgenic plants. It will be a standard reference for the formal analysis of photosynthetic metabolism in vivo by advanced students and researchers.
Download or read book Advances in Plant Ecophysiology Techniques written by Adela M. Sánchez-Moreiras and published by Springer. This book was released on 2018-08-17 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook covers the most commonly used techniques for measuring plant response to biotic and abiotic stressing factors, including: in vitro and in vivo bioassays; the study of root morphology, photosynthesis (pigment content, net photosynthesis, respiration, fluorescence and thermoluminiscence) and water status; thermal imaging; the measurement of oxidative stress markers; flow cytometry for measuring cell cycle and other physiological parameters; the use of microscope techniques for studying plant microtubules; programmed-cell-death; last-generation techniques (metabolomics, proteomics, SAR/QSAR); hybridization methods; isotope techniques for plant and soil studies; and the measurement of detoxification pathways, volatiles, soil microorganisms, and computational biology.
Download or read book Stress Responses in Plants written by Bhumi Nath Tripathi and published by Springer. This book was released on 2015-05-27 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection discusses the variety of specific molecular reactions by means of which plants respond to physiological and toxic stress conditions. It focuses on the characterization of the molecular mechanisms that underlie the induction of toxicity and the triggered responses and resistances. The nine chapters, all written by prominent researchers, examine heavy metal toxicity, aluminum toxicity, arsenic toxicity, salt toxicity, drought stress, light stress, temperature stress, flood stress and UV-B stress. In addition, information on the fundamentals of stress responses and resistance mechanisms is provided. The book addresses researchers and students working in the fields of plant physiology and biochemistry.
Download or read book Brassinosteroids Plant Growth and Development written by Shamsul Hayat and published by Springer. This book was released on 2019-04-02 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The entire range of the developmental process in plants is regulated by a shift in the hormonal concentration, tissue sensitivity and their interaction with the factors operating around the plants. Phytohormones play a crucial role in regulating the direction of plant in a coordinated fashion in association with metabolism that provides energy and the building blocks to generate the form that we recognize as a plant. Out of the recognized hormones, attention has largely been focused on Auxins, Gibberellins, Cytokinins, Abscisic acid, Ethylene and more recently on Brassinosteroids. In this book we are providing the information about a brassinosteroids that again confirm its status as phytohormones because it has significant impact on various aspects of the plant life and its ubiquitous distribution throughout the plant kingdom. Brassinosteroids are generating a significant impact on plant growth and development, photosynthesis, transpiration, ion uptake and transport, induces specific changes in leaf anatomy and chloroplast structure. This book is not an encyclopedia of reviews but includes a selected collection of newly written, integrated, illustrated reviews describing our knowledge of brassinosteroids. The aim of this book is to tell all about brassinosteroids, by the present time. The various chapters incorporate both theoretical and practical aspects and may serve as baseline information for future researches through which significant development is possible. It is intended that this book will be useful to the students, teachers and researchers, both in universities and research institutes, especially in relation to biological and agricultural sciences.
Download or read book Plant Breeding for Water Limited Environments written by Abraham Blum and published by Springer Science & Business Media. This book was released on 2010-11-09 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume will be the only existing single-authored book offering a science-based breeder’s manual directed at breeding for water-limited environments. Plant breeding is characterized by the need to integrate information from diverse disciplines towards the development and delivery of a product defines as a new cultivar. Conventional breeding draws information from disciplines such as genetics, plant physiology, plant pathology, entomology, food technology and statistics. Plant breeding for water-limited environments and the development of drought resistant crop cultivars is considered as one of the more difficult areas in plant breeding while at the same time it is becoming a very pressing issue. This volume is unique and timely in that it develops realistic solutions and protocols towards the breeding of drought resistant cultivars by integrating knowledge from environmental science, plant physiology, genetics and molecular biology.
Download or read book Current topics in photosynthesis written by J. Amesz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four decades ago, when Lou Duysens was about to start his work on fluo rescence and energy transfer in photosynthesis that would lead to his thesis [1], very little was known about the molecular mechanisms of photosyn thesis, certainly from our present-day point of view. However, this state of affairs would rapidly change in the ensuing years by the introduction of modern physical and biochemical techniques. Especially the field of optical spectroscopy, on which the work of Duysens had such a significant impact, has proved to be one of the most fruitful techniques in the study of primary processes and electron transfer reactions in photosynthesis. Duysens' thesis established the role of energy transfer in photosynthesis and also showed for the first time the existence in photosynthetic bacteria of light-induced absorbance changes of what is now known as the primary electron donor P-870. Subsequent studies by the same method demonstrated the photo-oxidation of cytochromes, both in bacteria [2] and in algae [3,4] and of the absorbance changes [3] that were later found to be due to electro chromic band shifts of antenna pigments. Measurements of cyto chrome kinetics in light of various wavelengths led to the concept of two photosystems in green plant photosynthesis [5], whereas a study of the factors affecting the fluorescence yield of chlorophyll gave the first infor mation on the electron acceptor Q of photo system II [6].
Download or read book The Photosystems written by J. Barber and published by Elsevier. This book was released on 2015-12-04 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is very little in this eleventh volume of Topics in Photosynthesis which could have been written when the first volume was published fifteen years ago. Advances over the last decade have been spectacular, most particularly in our understanding of the photosystems that is the subject of this volume. After a comparative introducution of bacterial and plant photosystems, the book begins with a consideration of what is theoretically possible in energy conversion. This is followed by light harvesting in photosystems II, followed by its molecular biology, protein engineering, thermoluminescence, photoinhibition, the effect of herbicides and heat shock, and, most important function of all and one about which so little is yet understood at the molecular level, the process by which it evolves oxygen. The last three chapters deal with the equivalent processes of photosystem I. The whole volume tells the story of a natural system of incredible ingenuity and complexity, but which as the chapters unfold, is seen to be within our grasp and eventual ability to comprehend.
