Download or read book Biotic Type Antioxidants the prospective search area for novel chemical drugs written by E A. Parfenov and published by Routledge. This book was released on 2018-12-19 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of molecular and cellular mechanisms of pathology, together with the present data on drug treatment result in enhanced drug design and testing. The known mechanisms of biological activity as displayed by ascorbic acid and other natural reductones are the reason that they are considered to be physiologically compatible antioxidants, many of which are trace elements in food. The pharmacological potential of natural antioxidants may be enhanced by chemical modification. Biotic antioxidants possess an important potential to be a reliable basis of the development of new multipurpose drugs, within the framework of existing technological structures. This book shows approaches for possible use of these natural antioxidants. In particular, such an approach is described for the case of the design of superoxide dismutase models with anti-tumour activity.
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 336 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 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 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 382 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 Abiotic and Biotic Stress in Horticultural Crops Insight into Recent Advances in the Underlying Tolerance Mechanism written by Milan Kumar Lal and published by Frontiers Media SA. This book was released on 2023-06-21 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Agriculture in the Era of Climate Change written by Rajib Roychowdhury and published by Springer Nature. This book was released on 2020-07-06 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under ongoing climate changes, natural and cultivated habitats of major crops are being continuously disturbed. Such conditions impose and exacerbate abiotic and biotic stressors. Drought, salinity, flood, cold, heat, heavy metals, metalloids, oxidants, irradiation, etc. are important abiotic stressors, while diseases and infections caused by plant pathogens, such as fungal agents, bacteria and viruses, are major biotic stresses. In many instances, stresses have become the major limiting factor for agricultural productivity and exert detrimental role on growth and yield of the crops. To help feed an ever increasing world population and to ensure global food security, concerted efforts from scientists and researchers have identified strategies to manage and mitigate the impacts of climate-induced stresses. This book, summarizing their findings, is aimed at crop improvement beyond such kind of barriers, by agronomic practices (genetics, breeding, phenotyping, etc.) and biotechnological applications, including molecular markers, QTL mapping, genetic engineering, transgenesis, tissue culture, various 'omics' technologies and gene editing. It will cover a wide range of topics under environmental challenges, agronomy and agriculture processes, and biotechnological approaches. Additionally, fundamental mechanisms and applied information on stress responses and tolerance will be discussed. This book highlights problems and offers proper solutions for crop stress management with recent information and up-to-date citations. We believe this book is suitable for scientists, researchers and students working in the fields of agriculture, plant science, environmental biology and biotechnology.
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 306 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 Chemical Reactions in Liquid and Solid Phase written by Gennadiĭ Efremovich Zaikov and published by Nova Publishers. This book was released on 2003 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection examines the influence of liquid and solid states during radical, ionic, and molecular reactions, specifically how cage effect, diffusion hindrance, donor-acceptor interaction, electrostatic interaction, dispersion forces and other factors affect the rates, mechanism, and direction of chemical reactions. Topics of the 11 papers include spherical hydrogel particles for endovascular embolisation, the synthesis and thermal degradation of phenolic resins, mono-molecular chain termination in dimethacrylate postpolymerisation, and calculating the effect of chain deformation on macromolecule scission. Most of the researchers work in Russia.
Download or read book Biotic Type Antioxidants the prospective search area for novel chemical drugs written by E A. Parfenov and published by Routledge. This book was released on 2018-12-19 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery of molecular and cellular mechanisms of pathology, together with the present data on drug treatment result in enhanced drug design and testing. The known mechanisms of biological activity as displayed by ascorbic acid and other natural reductones are the reason that they are considered to be physiologically compatible antioxidants, many of which are trace elements in food. The pharmacological potential of natural antioxidants may be enhanced by chemical modification. Biotic antioxidants possess an important potential to be a reliable basis of the development of new multipurpose drugs, within the framework of existing technological structures. This book shows approaches for possible use of these natural antioxidants. In particular, such an approach is described for the case of the design of superoxide dismutase models with anti-tumour activity.
Download or read book Antioxidants written by Viduranga Waisundara and published by BoD – Books on Demand. This book was released on 2021-09-08 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antioxidants are one of the most sought-after biological compounds of interest to both scientific and nonscientific communities. The term gained popularity with the advent of identifying these compounds as having the ability to maintain health and wellness by combating against pathways leading to non-communicable diseases. This book covers several aspects of antioxidants—mechanisms of action, assays of measuring potency, sources, and even methods of isolation and identification. While it may seem these aspects have been covered in depth in several publications before this, this book intends to be positioned as an update, especially since the area of antioxidant research is as dynamic as ever. There are several chapters that might be of interest to health buffs, specifically those who are quite keen on maintaining health and wellness.
Download or read book Phenotyping at Plant and Cell Levels The Quest for Tolerant Crop Development volume II written by Ulrich Schurr and published by Frontiers Media SA. This book was released on 2023-11-22 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Research Topic is part of the Phenotyping at Plant and Cell Levels: The Quest for Tolerant Crop Development series: Phenotyping at Plant and Cell Levels: The Quest for Tolerant Crop Development This Research Topic aims at accelerating the discovery of crop varieties that are able to withstand environmental stresses, via the use of phenotyping approaches at the plant and cellular levels. Climate change is expected to have a drastic impact on agriculture, notably by impacting water availability, precipitations, temperatures, soil nutrients, and the incidence of diseases and pests. A better use of plant genetic resources and plant breeding are key to tackling this challenge from climate change and for food security. Many landraces and wild relatives of crops are conserved in seed and gene banks. These collections are potentially valuable for breeders, but are presently underexploited. Moreover, the contribution of the soil microbiome to enhance the performance of specific plant genotypes has been overlooked. The aim is to generate crops that are resistant against biotic stress or can tolerate abiotic stress without significant impact on their performance. Current studies in the field of sensor technologies and phenomics are mainly empirically based and do not link the phenotypic parameters to the molecular scale. Similarly, many molecular studies do not correlate their findings to the whole plant phenotype. The quantitative high throughput analysis of crop potential and behavior during stress is a form of Genotype x Environment interaction and is a major bottleneck. We urgently need to identify resilient genotypes and to understand the underlying mechanisms of this resilience. Phenotyping science is quickly developing to characterize plant behavior, it's dynamic dimensions, and to quantify features such as growth and stress resilience, which increasingly permit to link the phenotype to genetic control.
Download or read book Endophytic Fungi Secondary Metabolites and Plant Biotic and Abiotic Stress Management written by Mina Salehi and published by Frontiers Media SA. This book was released on 2024-02-07 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in molecular plant pathology plant abiotic and biotic stress written by Kun Zhang and published by Frontiers Media SA. This book was released on 2024-04-01 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Plant Breeding and Genome Editing Tools for Crop Improvement written by Deka, Pradip Chandra and published by IGI Global. This book was released on 2020-08-07 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant breeders have used mutagenic agents to create variability for their use in crop improvement. However, application of mutagenic agents has its own drawbacks, such as non-specificity and random nature, simultaneous effect on large numbers of genes, and induction of chromosomal aberrations. To overcome these limitations, several genome editing systems have been developed with the aid of cutting-edge technology rooted in the expertise of several research fields. Molecular Plant Breeding and Genome Editing Tools for Crop Improvement is a pivotal reference source that provides an interdisciplinary approach to crop breeding through genetics. Featuring coverage of a broad range of topics including software, molecular markers, and plant variety identification, this book is ideally designed for agriculturalists, biologists, engineers, advocates, policymakers, researchers, academicians, 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 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.
