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Though plant cells are separated by cell walls, cells maintain their identity as they are delimited by semi-permeable membranes that permit them to function as autonomous units. The flow of materials in and out of the cell is regulated by channels, transporters, pumps, and acquaporins in these membranes. The cytoplasm is sandwiched between two membranes: the plasma membrane, which forms the outer boundary of the cytoplasm, and the tonoplast or the vacuolar membrane which forms the inner boundary. Cell membranes serve several different functions: form boundaries and provide compartmentalization, site of chemical reactions catalyzed by membrane proteins, regulate the exchange of ions/compounds across the barrier, site of perception/transmission of signals (hormones), and act in cell-to-cell communication. The membrane functions are affected by different abiotic (biotic stress not discussed), nutritional, edaphic and mechanical stresses, which have been discussed in this volume in light of the recent literature
“Photosynthesis: Plastid Biology, Energy Conversion and Carbon Assimilation” was conceived as a comprehensive treatment touching on most of the processes important for photosynthesis. Most of the chapters provide a broad coverage that, it is hoped, will be accessible to advanced undergraduates, graduate students, and researchers looking to broaden their knowledge of photosynthesis. For biologists, biochemists, and biophysicists, this volume will provide quick background understanding for the breadth of issues in photosynthesis that are important in research and instructional settings. This volume will be of interest to advanced undergraduates in plant biology, and plant biochemistry and to graduate students and instructors wanting a single reference volume on the latest understanding of the critical components of photosynthesis.
After more than 30 years, The Book of Fructans represents the first and most comprehensive coverage of fructans generated by pioneer glycoscientists from the field. It outlines the fundamentals of all fructan types, their terminology, chemical and structural-functional features, biosynthetic enzymes that make and break them, their presence and possible roles in nature, their evolutionary aspects and their microbial, enzymatic, and plant-based production. Additional sections cover the applications of fructans, specifically, the agro/chemical and biomedical applications, health, pharmaceutical and cosmetic applications, fructans in food and feed, fructan nanotechnology, the immunomodulatory and antiviral effects of fructans and the perspectives for fructans in circular economies and sustainable societies. Intended for scientists, entrepreneurs, academicians and students working in related fields, this book will be a useful resource for all who wish to learn more about these extraordinary carbohydrates. - Combines all aspects of fructans in a single volume - Covers fundamentals, applications and society - Introduces 'Fructans for Life' concepts
Adopting an interdisciplinary approach to the study of photoassimilate partitioning and source-sink relationhips, this work details the major aspects of source-sink physiology and metabolism, the integration of individual components and photoassimilate partitioning, and the whole plant source-sink relationships in 16 agriculturally important crops. The work examines in detail the components of carbon partitioning, such as ecology, photosynthesis, loading, transport and anatomy, and discusses the impact of genetic, environmental and agrotechnical factors on the parts of whole plant source-link physiology.
The first book to be published on the subject of fructans, Science and Technology of Fructans provides a thorough treatment of this carbohydrate from recent research in a broad range of disciplines to applications in crop, animal and food science. This volume includes a detailed glossary and offers a terminology system that can be used by all fructan scientists. It also reviews modern analytical methods and Japanese and European technologies for commercial production and use of fructans. Topics covered by contributors to Science and Technology of Fructans include chemical structure and characteristics, metabolism in microorganisms and plants, fructans in crop production and preservation and in human and animal diets, and production and utilization of microbial fructans and inulin. A chapter by J.S.D. Bacon and J. Edelman, who established the modern biochemistry of fructans in the mid-20th century, includes personal reminiscences of the early years of fructan research. Since this volume crosses all disciplinary boundaries of fructan research, Science and Technology of Fructans is indispensable to biochemists; carbohydrate chemists; analytical chemists; and crop, horticultural, animal, and food scientists. It will also be useful reading for nutritionists, agricultural extension workers, and members of the food industry.
The concept of general oxidoreductase function at the plasma level is new. Oxidoreduction at the Plasma Membrane: Relation to Growth and Transport provides the first truly comprehensive coverage of the oxidoreduction reactions in plasma membranes and the role that can now be attributed to these enzymes in controlling growth and other cell functions in plants and animals. The book describes the nature and orientation of oxidoreductases in plasma membranes; the stimulation of cell growth by oxidants reacting with transplasma membrane electron transport; changes in enzymes in tumor cells; and the basis of the growth effects and oxidoreductase stimulation of membrane transport in relation to known second messenger functions, such as cellular pH changes, calcium transport, protein phosphorylation and oxidation levels of pyridine nucleotides. The book then examines the significance of these enzymes in cell culture, tumor growth, nerve transmission, ion transport, and membrane potential. The book also presents a new approach to understanding the action of antitumor drugs and herbicides. Biochemists, biologists, oncologists, cancer researchers, physiologists, and endocrinologists will find this an indispensible reference source as they conduct studies in this exciting new area.
There has been a significant surge of interest in the study of the physiology and biochemistry of plant host-parasite interactions in recent years, as evidenced by the number of research papers currently being published on the subject. The in creased interest is probably based on the evidence that effective management of many plant diseases is, for the most part, contingent upon a clear understanding of the nature of host-parasite interactions. This intensified research effort calls for a greater number of books, such as this one, designed to compile, synthesize, and evaluate widely scattered pieces of information on this subject. The study of host-parasite interactions concerns the struggle between plants and pathogens, which has been incessant throughout their coevolution. Such in teractions are often highly complex. Pathogens have developed sophisticated of fensive systems to parasitize plants, while plants have evolved diversified defen sive strategies to ward off potential pathogens. In certain cases, the outcome of a specific host-parasite interaction seems to depend upon the presence or efficacy of the plant's defense system. A plant may become diseased when a parasite manages to invade it, unhindered by preexisting defense systems and/or without eliciting the plant's induced resistance response(s). Absence of disease may re flect the inability of the invading pathogen to overcome the plant's defense sys tem(s).