Download or read book Antioxidants and Antioxidant Enzymes in Higher Plants written by Dharmendra K. Gupta and published by Springer. This book was released on 2018-03-10 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of antioxidants and antioxidant enzymes and their role in the mechanisms of signaling and cellular tolerance under stress in plant systems. Major reactive oxygen species (ROS)-scavenging/modulating enzymes include the superoxide dismutase (SOD) that dismutates O2 into H2O2, which is followed by the coordinated action of a set of enzymes including catalase (CAT), ascorbate peroxidase (APX), glutathione peroxidase (GPX) and peroxiredoxins (Prx) that remove H2O2. In addition to the ROS scavenging enzymes, a number of other enzymes are found in various subcellular compartments, which are involved in maintaining such redox homeostasis either by directly scavenging particular ROS and ROS-byproducts or by replenishing antioxidants. In that respect, these enzymes can be also considered antioxidants. Such enzymes include monodehydroascorbate reductase (MDAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), alternative oxidases (AOXs), peroxidases (PODs) and glutathione S-transferases (GSTs). Some non-enzymatic antioxidants, such as ascorbic acid (vitamin C), carotenes (provitamin A), tocopherols (vitamin E), and glutathione (GSH), work in concert with antioxidant enzymes to sustain an intracellular steady-state level of ROS that promotes plant growth, development, cell cycles and hormone signaling, and reinforces the responses to abiotic and biotic environmental stressors. Offering a unique compilation of information on antioxidants and antioxidant enzymes, this is a valuable resource for advanced students and researchers working on plant biochemistry, physiology, biotechnology, and signaling in cell organelles, and those specializing in plant enzyme technology.

Download or read book Reactive Oxygen Species and Antioxidants in Higher Plants written by S. Dutta Gupta and published by CRC Press. This book was released on 2010-09-15 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing basic information on reactive oxygen species (ROS), this volume describes new developments in the action of ROS, the role of antioxidants, and the mechanisms developed to scavenge free radical associated cellular damage. It illustrates the chemistry of ROS, ROS signaling, antioxidative defense systems, transgene approaches in scavenging R

Download or read book Antioxidants in Higher Plants written by Ruth G. Alscher and published by CRC Press. This book was released on 2017-07-28 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antioxidants in Higher Plants provides a unique blend of molecular and biochemical approaches to cover the state of the art in antioxidant function. The chemistry and protective potential of sulfhydryl and hydroxyl compounds are emphasized. Interesting perspectives are presented regarding the response of antioxidant metabolism to interactions among environmental pollutants, illumination, temperature, and water availability. The book also discusses how tools of molecular biology may further clarify antioxidant function and response to stress. Antioxidants in Higher Plants will be an excellent reference for plant physiologists, biochemists, molecular biologists, ecologists, and students.

Download or read book Antioxidant Defense in Plants written by Tariq Aftab and published by Springer Nature. This book was released on 2022-05-04 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book highlights the molecular basis of various enzymatic and non-enzymatic antioxidants, defense mechanisms and adaptation strategies employed by plants to avoid the stressful conditions. Special focus is given to gene expression, omics and other latest technologies such as CRISPR-Cas mediated genome editing applications for defense related studies in plants. Environmental stresses such as drought, salinity or floods etc. induce the generation of reactive oxygen species (ROS) which causes severe damage to cell membrane integrity by accelerating lipid peroxidation. To counteract the detrimental effect of ROS, plants are inherited with an intricate and vibrant antioxidant defense system, comprised of enzymatic (catalase, peroxidase, superoxide dismutase, glutathione reductase, glutathione S-transferase, guaiacol peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase etc.), and non-enzymatic (glutathione, ascorbate, α-tocopherol, carotenoids, flavonoids etc.) antioxidants, which scavenge and/or reduce excess ROS and improve plant tolerance to various stresses. Stress tolerance in most crop plants is positively correlated with an efficient antioxidant system. Therefore, studying the efficiency of antioxidant defense systems in plants is necessary for facilitating the plant’s nature of adaptation against challenging environments. This book is of interest to teachers, researchers and academic experts. Also, the book serves as additional reading material for undergraduate and graduate students of biotechnology and molecular biology of plants.

Download or read book Reactive Oxygen Species and Antioxidant Systems in Plants Role and Regulation under Abiotic Stress written by M. Iqbal R. Khan and published by Springer. This book was released on 2017-08-02 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present edited book is an attempt to update the state of art of the knowledge on metabolism of ROS and antioxidants and their relationship in plant adaptation to abiotic stresses involving physiological, biochemical and molecular processes. The chapters are much focused on the current climate issues and how ROS metabolism can manipulate with antioxidant system to accelerate detoxification mechanism. It will enhance the mechanistic understanding on ROS and antioxidants system and will pave the path for agricultural scientists in developing tolerant crops to achieve sustainability under the changing environmental conditions. The increase in abiotic stress factors has become a major threat to sustainability of crop production. This situation has led to think ways which can help to come out with potential measures; for which it is necessary to understand the influence of abiotic stress factors on crops performance and the mechanisms by which these factors impact plants. It has now become evident that abiotic stress impacts negatively on plant growth and development at every stage of plant’s life. Plants adapt to the changing environment with the adjustment at physiological, biochemical and molecular levels. The possible mechanisms involved in the negative effects of abiotic stress factors are excess production of reactive oxygen species (ROS). They alter physiological and molecular mechanisms leading to poor performance of plants. Plants however, are able to cope with these adverse effects by inducing antioxidant systems as the priority. Nevertheless, the dual role of ROS has now been ascertained which provides an evidence for regulation of plant metabolism positively on a concentration-dependent manner. Under conditions of high ROS production, the antioxidant system plays a major role in diminishing the effects of ROS. Thus, ROS production and antioxidant system are interwoven with abiotic stress conditions. The antioxidants have the capacity to hold the stability in metabolism in order to avoid disruption due to environmental disturbances.

Download or read book Antioxidants in Higher Plants written by Ruth G. Alscher and published by Springer. This book was released on 1993-04-26 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antioxidants in Higher Plants provides a unique blend of molecular and biochemical approaches to cover the state of the art in antioxidant function. The chemistry and protective potential of sulfhydryl and hydroxyl compounds are emphasized. Interesting perspectives are presented regarding the response of antioxidant metabolism to interactions among environmental pollutants, illumination, temperature, and water availability. The book also discusses how tools of molecular biology may further clarify antioxidant function and response to stress. Antioxidants in Higher Plants will be an excellent reference for plant physiologists, biochemists, molecular biologists, ecologists, and students.

Download or read book Oxidative Stress and Antioxidant Defenses in Biology written by Sami Ahmad and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a comprehensive treatment of the latest research on oxidative stress and antioxidant defenses in all types of aerobic organisms. This book investigates oxidative stress in prokaryotes, protists, plants, fungi, vertebrates, and invertebrates, stimulating cross-fertilization among diverse fields. In addition, it explains the basic science of oxygen activation and oxidative stress as a foundation for more advanced material, making this book useful as a resource for both specialists and non-specialists.

Download or read book Abiotic and Biotic Stress in Plants written by Arun Shanker and published by BoD – Books on Demand. This book was released on 2016-02-17 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: The impact of global climate change on crop production has emerged as a major research priority during the past decade. Understanding abiotic stress factors such as temperature and drought tolerance and biotic stress tolerance traits such as insect pest and pathogen resistance in combination with high yield in plants is of paramount importance to counter climate change related adverse effects on the productivity of crops. In this multi-authored book, we present synthesis of information for developing strategies to combat plant stress. Our effort here is to present a judicious mixture of basic as well as applied research outlooks so as to interest workers in all areas of plant science. We trust that the information covered in this book would bridge the much-researched area of stress in plants with the much-needed information for evolving climate-ready crop cultivars to ensure food security in the future.

Download or read book Reactive Oxygen Species and Oxidative Damage in Plants Under Stress written by Dharmendra K. Gupta and published by Springer. This book was released on 2015-09-07 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides detailed and comprehensive information on oxidative damage caused by stresses in plants with especial reference to the metabolism of reactive oxygen species (ROS). In plants, as in all aerobic organisms, ROS are common by-products formed by the inevitable leakage of electrons onto O2 from the electron transport activities located in chloroplasts, mitochondria, peroxisomes and in plasma membranes or as a consequence of various metabolic pathways confined in different cellular loci. Environmental stresses such as heat, cold, drought, salinity, heavy-metal toxicity, ozone and ultraviolet radiation as well as pathogens/contagion attack lead to enhanced generation of ROS in plants due to disruption of cellular homeostasis. ROS play a dual role in plants; at low concentrations they act as signaling molecules that facilitate several responses in plant cells, including those promoted by biotic and abiotic agents. In divergence, at high levels they cause damage to cellular constituents triggering oxidative stress. In either case, small antioxidant molecules and enzymes modulate the action of these ambivalent species.

Download or read book Antioxidants and Reactive Oxygen Species in Plants written by Nicholas Smirnoff and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactive oxygen species (ROS) are produced during the interaction of metabolism with oxygen. As ROS have the potential to cause oxidative damage by reacting with biomolecules, research on ROS has concentrated on the oxidative damage that results from exposure to environmental stresses and on the role of ROS in defence against pathogens. However, more recently, it has become apparent that ROS also have important roles as signalling molecules. A complex network of enzymatic and small molecule antioxidants controls the concentration of ROS and repairs oxidative damage, and research is revealing the complex and subtle interplay between ROS and antioxidants in controlling plant growth, development and response to the environment. This book covers these new developments, generally focussing on molecular and biochemical details and providing a point of entry to the detailed literature. It is directed at researchers and professionals in plant molecular biology, biochemistry and cell biology, in both the academic and industrial sectors.

Download or read book Oxidative Damage to Plants written by Parvaiz Ahmad and published by Academic Press. This book was released on 2014-01-29 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions that review research on this topic throughout the world, Oxidative Damage to Plants covers key areas of discovery, from the generation of reactive oxygen species (ROSs), their mechanisms, quenching of these ROSs through enzymatic and non-enzymatic antioxidants, and detailed aspects of such antioxidants as SOD and CAT. Environmental stress is responsible for the generation of oxidative stress, which causes oxidative damage to biomolecules and hence reduces crop yield. To cope up with these problems, scientists have to fully understand the generation of reactive oxygen species, its impact on plants and how plants will be able to withstand these stresses. Provides invaluable information about the role of antioxidants in alleviating oxidative stress Examines both the negative effects (senescence, impaired photosynthesis and necrosis) and positive effects (crucial role that superoxide plays against invading microbes) of ROS on plants Features contributors from a variety of regions globally

Download or read book Antioxidants in Plant Microbe Interaction written by Harikesh Bahadur Singh and published by Springer Nature. This book was released on 2021-07-21 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited book is focused on antioxidant compounds and their biosynthesis, up-regulation, mechanism of action for selective bioactivity, targeted role and the advancement of their bioactive potential during plant-microbe interaction and other stress conditions. This book also emphasizes on the role of antioxidants in recruiting beneficial microbes in plant surroundings. Antioxidants have multiple biological roles in plants especially in the signalling pathway. These compounds are secondary metabolites produced besides the primary biosynthetic pathway and are associated with growth and development. Besides they also have special role to play during oxidative stress produced via abiotic stimulants or pathogen attack. This understanding of the biosynthesis, signaling and function of antioxidant compounds in plants during stress condition is helpful in restoring plant ecosystem productivity and improve plant responses to a wide range of stress conditions. This book is a useful compilation for researchers and academicians in botany, plant physiology, plant biochemistry and stress physiology. Also the book serves as reading material for undergraduate and graduate students of environmental sciences, agricultural sciences and other plant science courses.

Download or read book Reactive Oxygen Nitrogen and Sulfur Species in Plants written by Mirza Hasanuzzaman and published by John Wiley & Sons. This book was released on 2019-07-02 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a multidisciplinary analysis of the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS), and reactive sulfur species (RSS). Since plants are the main source of our food, the improvement of their productivity is the most important task for plant biologists. In this book, leading experts accumulate the recent development in the research on oxidative stress and approaches to enhance antioxidant defense system in crop plants. They discuss both the plant responses to oxidative stress and mechanisms of abiotic stress tolerance, and cover all of the recent approaches towards understanding oxidative stress in plants, providing comprehensive information about the topics. It also discusses how reactive nitrogen species and reactive sulfur species regulate plant physiology and plant tolerance to environmental stresses. Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms covers everything readers need to know in four comprehensive sections. It starts by looking at reactive oxygen species metabolism and antioxidant defense. Next, it covers reactive nitrogen species metabolism and signaling before going on to reactive sulfur species metabolism and signaling. The book finishes with a section that looks at crosstalk among reactive oxygen, nitrogen, and sulfur species based on current research done by experts. Presents the newest method for understanding oxidative stress in plants. Covers both the plant responses to oxidative stress and mechanisms of abiotic stress tolerance Details the integration among reactive oxygen species (ROS), reactive nitrogen species (RNS) and reactive sulfur species (RSS) Written by 140 experts in the field of plant stress physiology, crop improvement, and genetic engineering Providing a comprehensive collection of up-to-date knowledge spanning from biosynthesis and metabolism to signaling pathways implicated in the involvement of RONSS to plant defense mechanisms, Reactive Oxygen, Nitrogen and Sulfur Species in Plants: Production, Metabolism, Signaling and Defense Mechanisms is an excellent book for plant breeders, molecular biologists, and plant physiologists, as well as a guide for students in the field of Plant Science.

Download or read book Oxidative Stress and Chronic Degenerative Diseases written by Jose Antonio Morales-Gonzalez and published by BoD – Books on Demand. This book was released on 2013-05-22 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work responds to the need to find, in a sole document, the affect of oxidative stress at different levels, as well as treatment with antioxidants to revert and diminish the damage. Oxidative Stress and Chronic Degenerative Diseases - a Role for Antioxidants is written for health professionals by researchers at diverse educative institutions (Mexico, Brazil, USA, Spain, Australia, and Slovenia). I would like to underscore that of the 19 chapters, 14 are by Mexican researchers, which demonstrates the commitment of Mexican institutions to academic life and to the prevention and treatment of chronic degenerative diseases.

Download or read book Phytochemicals written by Toshiki Asao and published by BoD – Books on Demand. This book was released on 2018-11-07 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phytochemicals provides original research work and reviews on the sources of phytochemicals, and their roles in disease prevention, supplementation, and accumulation in fruits and vegetables. The roles of anthocyanin, flavonoids, carotenoids, and taxol are presented in separate chapters. Antioxidative and free radicle scavenging activity of phytochemicals is also discussed. The medicinal properties of Opuntia, soybean, sea buckthorn, and gooseberry are presented in a number of chapters. Supplementation of plant extract with phytochemical properties in broiler meals is discussed in one chapter. The final two chapters include the impact of agricultural practices and novel processing technologies on the accumulation of phytochemicals in fruits and vegetables. This book mainly focuses on medicinal plants and the disease-preventing properties of phytochemicals, which will be a useful resource to the reader.

Download or read book Organic Solutes Oxidative Stress and Antioxidant Enzymes Under Abiotic Stressors written by Arafat Abdel Hamed Abdel Latef and published by CRC Press. This book was released on 2021-07-22 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents evidence-based approaches and techniques used to diagnose and manage organic solutes, oxidative stress, and antioxidant enzymes in crop plants under abiotic stressors. It discusses strategies in abiotic stress tolerance including osmoregulation, osmoprotectants, and the regulation of compatible solutes and antioxidant enzymes in plants. With contributions from 49 scholars worldwide, this authoritative guide is educational for scientists working with plants and abiotic stressors. Provides comprehensive coverage of all aspects of abiotic stress, from abiotic stresses’ effects on plant growth, development, and defense mechanisms, to functionality of enzymatic and non-enzymatic antioxidant enzymes in crop plants. Outlines the dangers of reactive oxygen species. Discusses using antioxidant enzymes and antioxidant molecules in plant protection mechanisms. Edited by Arafat Abdel Hamed Abdel Latef, Professor of Plant Physiology at South Valley University, Egypt, this book is written for graduate students and scholars researching abiotic plant stressors. “The book represents an excellent strategy to understand the mechanisms and techniques of antioxidant enzymes in the plant cell under stress conditions.” – Professor Mostafa El-sheekh “Provides a thorough and detailed picture of the updated knowledge on the techniques used to manage organic solutes, oxidative stress and stress-related enzymes under abiotic stressors.” – Bhoopander Giri, Ph.D. “Will serve as an imperative source of scientific literature in the plant stress biology field.” – Narendra Singh Yadav, Ph.D. “The book has eighteen chapters written by scholars of international expertise in plant stress management.” – Dr. Sikander PAL, Senior Assistant Professor

Download or read book Subcellular Compartmentalization of Plant Antioxidants and ROS Generating Systems written by Francisco J. Corpas and published by Frontiers Media SA. This book was released on 2021-03-25 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: