Download or read book Physiological Studies on Nitrogen Fixation by Azotobacter Vinelandii written by Gerald William Strandberg and published by . This book was released on 1963 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiological and Ultrastructural Studies of Azotobacter Vinelandii Grown Under Nitrogen fixing and Non nitrogen fixing Conditions written by Erminia Pinina Narrod Zey and published by . This book was released on 1971 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparative Physiological Study on the Resting Cell Metabolism of Azotobacter Vinelandii Grown Under Nitrogen fixing and Nonnitrogen fixing Conditions written by Zendra Elizabeth Zehner and published by . This book was released on 1972 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Nitrogen Fixation written by Gary S. Stacey and published by Springer Science & Business Media. This book was released on 1992-04-30 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phylogenetic classification of nitrogen-fixing organisms. Physiology of nitrogen fixation in free-living heterotrophs. Nitrogen fixation by photosynthetic bacteria. Nitrogen fixation in cyanobacteria. Nitrogen fixation by methanogenic bacteria. Associative nitrogen-fixing bacteria. Actinorhizal symbioses. Ecology of bradyrhizobium and rhizobium. The rhizobium infection process. Physiology of nitrogen-fixing legume nodules: compartments, and functions. Hydrogen cycling in symbiotic bacteria. Evolution of nitrogen-fixing symbioses. The rhizobium symbiosis of the nonlegume parasponia. Genetic analysis of rhizobium nodulation. Nodulins in root nodule development. Plant genetics of symbiotic nitrogen fixation. Molecular genetics of bradyrhizobium symbioses. The enzymology of molybdenum-dependent nitrogen fixation. Alternative nitrogen fixation systems. Biochemical genetics of nitrogenase. Regulation of nitrogen fixation genes in free-living and symbiotic bacteria. Isolated iron-molybdenum cofactor of nitrogenase.
Download or read book Studies of Nitrogen Fixation in Azotobacter Vinelandii written by Susan Mills and published by . This book was released on 1964 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Nitrogen Fixation written by Anton Quispel and published by . This book was released on 1974 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nitrogen-fixing organisms. Free-living heterotrophic nitrogen-fixing bacteria. Nitrogen-fixing bacteria in the rhizosphere. Nitrogen fixation in the phyllosphere. Photosynthetic bacteria. Blue-gree algae. Associations with blue-green algae. Root-nodule symbioses with rhizobium. Root-nodulesymbioses withactinomycete-like organisms. Development of root-nodule symbioses. Root-nodule morphogenesis. Formation and function of bacteroids. The endophytes of the root nodules in nonleguminous plants. Leghemoglobin. Environmental effects on nodulation and symbiotic nitrogen fixation. Putative nitrogen fixation in other symbioses. The nitrogen-fixing system. The enzyme system. Genetics of N2-fixing organisms.
Download or read book Comparative physiological studies on mutants of Azotobacter vinelandii written by Susan Shoo-Shun Chow Yeh and published by . This book was released on 1976 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Horizons in Nitrogen Fixation written by Rafael Palacios and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to understand a process as complex as nitrogen fixation and to be in a position to manipulate it for the benefit of mankind, researchers are now working at the frontiers of science in many different areas: protein structure and function; catalytic mechanisms; electron transfer processes; regulatory circuits and environmental sensing; metabolic integration; chemical communication between organisms; differentiation; genome structure and function; microbial ecology; plant physiology; plant molecular biology; and agronomy. This volume represents a testimony to the advances in nitrogen fixation research that have been made and the contribution of these efforts to the solution of many other varied scientific problems. Limiting steps for future advances are analyzed and new horizons in nitrogen fixation research are proposed.
Download or read book Nitrogen Fixation written by John Raymond Postgate and published by Hodder Education. This book was released on 1978 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nitrogen cycle; The enzyme; Physiology; The free-living microbes; The plant associations; Genetics and evolution; The future.
Download or read book Biological Nitrogen Fixation written by Frans J. de Bruijn and published by John Wiley & Sons. This book was released on 2015-06-16 with total page 2250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is arguably the most important nutrient required by plants. However, the availability of nitrogen is limited in many soils and although the earth's atmosphere consists of 78.1% nitrogen gas (N2) plants are unable to use this form of nitrogen. To compensate , modern agriculture has been highly reliant on industrial nitrogen fertilizers to achieve maximum crop productivity. However, a great deal of fossil fuel is required for the production and delivery of nitrogen fertilizer. Moreover carbon dioxide (CO2) which is released during fossil fuel combustion contributes to the greenhouse effect and run off of nitrate leads to eutrophication of the waterways. Biological nitrogen fixation is an alternative to nitrogen fertilizer. It is carried out by prokaryotes using an enzyme complex called nitrogenase and results in atmospheric N2 being reduced into a form of nitrogen diazotrophic organisms and plants are able to use (ammonia). It is this process and its major players which will be discussed in this book. Biological Nitrogen Fixation is a comprehensive two volume work bringing together both review and original research articles on key topics in nitrogen fixation. Chapters across both volumes emphasize molecular techniques and advanced biochemical analysis approaches applicable to various aspects of biological nitrogen fixation. Volume 1 explores the chemistry and biochemistry of nitrogenases, nif gene regulation, the taxonomy, evolution, and genomics of nitrogen fixing organisms, as well as their physiology and metabolism. Volume 2 covers the symbiotic interaction of nitrogen fixing organisms with their host plants, including nodulation and symbiotic nitrogen fixation, plant and microbial "omics", cyanobacteria, diazotrophs and non-legumes, field studies and inoculum preparation, as well as nitrogen fixation and cereals. Covering the full breadth of current nitrogen fixation research and expanding it towards future advances in the field, Biological Nitrogen Fixation will be a one-stop reference for microbial ecologists and environmental microbiologists as well as plant and agricultural researchers working on crop sustainability.
Download or read book The Fundamentals of Nitrogen Fixation written by J. R. Postgate and published by CUP Archive. This book was released on 1982-12-23 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochemistry, physiology, genetics and ecology of nitrogen fixating micro-organisms are described. The value of this fundamental knowledge for symbiotic and near-symbiotic systems is shown
Download or read book Marine Nitrogen Fixation written by Jonathan P. Zehr and published by Springer Nature. This book was released on 2021-04-02 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to serve as a centralized reference document for students and researchers interested in aspects of marine nitrogen fixation. Although nitrogen is a critical element in both terrestrial and aquatic productivity, and nitrogen fixation is a key process that balances losses due to denitrification in both environments, most resources on the subject focuses on the biochemistry and microbiology of such processes and the organisms involved in the terrestrial environment on symbiosis in terrestrial systems, or on largely ecological aspects in the marine environment. This book is intended to provide an overview of N2 fixation research for marine researchers, while providing a reference on marine research for researchers in other fields, including terrestrial N2 fixation. This book bridges this knowledge gap for both specialists and non-experts, and provides an in-depth overview of the important aspects of nitrogen fixation as it relates to the marine environment. This resource will be useful for researchers in the specialized field, but also useful for scientists in other disciplines who are interested in the topic. It would provide a possible text for upper division classes or graduate seminars.
Download or read book Azospirillum VI and Related Microorganisms written by Istvan Fendrik and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Azospirillum is a plant growth promoting rhizobacterium used for inoculation of cereal and forage crops. The book covers its physiology, ecology, biochemistry, and molecular biology. The most advanced molecular techniques to understand the regulatory mechanisms of nitrogen fixation and ammonia assimilation, as well as the basis of phytohormone production, are included. In particular, the identification of novel types of promoters, specific regulatory circuits, and new regulatory proteins is described. New insights in the plant growth promoting role of the bacteria through the analysis of their interactions with the plant are presented. Also discussed are field applications, allowing the evaluation of the physiological and agronomic involvement of Azospirillum inoculations.
Download or read book The Nitrogen Fixation and Its Research in China written by Guo-fan Hong and published by Springer. This book was released on 1992 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Insights Into Mechanisms of Redox Homeostasis in Nitrogen Fixing Azotobacter Vinelandii written by Alexander Byron Alleman and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overuse of industrial nitrogen fertilizers causes environmental degradation through runoff, lowers soil pH, and generates greenhouse gas emissions. There is considerable interest in promoting biological nitrogen fixation (BNF) as a mechanism to reduce the inputs of nitrogen fertilizers in agriculture. However, considerable fundamental knowledge gaps need to be addressed to realize the potential impacts of BNF in agriculture. BNF is catalyzed by the enzyme nitrogenase, which requires a large amount of energy in the form of ATP and low potential electrons. Nitrogen-fixing organisms that respire aerobically have an advantage in meeting the energy demands of BNF but face challenges of protecting nitrogenase from inactivation by oxygen. The model aerobic nitrogen-fixing bacteria Azotobacter vinelandii has a unique electron transport system that accommodates excess oxygen while producing enough energy for nitrogenase. The mechanism, termed respiratory protection, consumes excess oxygen at the membrane and leads to lower oxygen accumulation in the cytosol. A. vinelandii also contains two enzymes, Rnf and Fix, that deliver reductant to nitrogenase in the form of low potential electrons. A physiological and systems-based approach was taken to understand how the dynamics of the electron transport systems are integrated to protect nitrogenase from oxygen while simultaneously creating enough energy for nitrogen fixation. A metabolic model of A. vinelandii was constructed that accurately determines growth rate under high oxygen and substrate concentrations, demonstrating the large flux directed to the respiratory protection mechanism. Interestingly, the respiratory protection mechanism is also required for accurate predictions even when ammonia is supplemented during growth, suggesting that respiratory protection might be an essential part of normal growth rather than strictly reserved for nitrogenase protection. The model has also shown how A. vinelandii can adapt under different oxygen concentrations, metal availability, and ammonia excreting phenotype by rearranging flux through the electron transport system. Through mutational studies of electron transport enzymes Rnf and Fix, Fix was shown to be required under low oxygen concentrations, and Rnf contributes to the regulation of redox homeostasis under high oxygen. Understanding the energy dynamics in aerobic nitrogen fixation will further allow the development of biotechnologies that can help supplement industrial nitrogenous fertilizer.
Download or read book The Regulation of Nitrogen Fixation in Azotobacter Vinelandii written by Thomas Harding Merriewether and published by . This book was released on 1980 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Fixation and Nitrogen Cycle written by Hajime Takahashi and published by . This book was released on 1975 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen fixation. Nitrogen-fixing blue-green algae used as green manure. Physiology and ecology of the nitrogen-fixing blue-green algae - contribution of blue-green algae to the nitrogen fixation in paddy soils. Non-leguminous root nodules in Japan (a supplementary report). Formation and functions of nitrogen fixing nodule in soybean allantoin formation in the symbiotic condition. Studies on symbiotic nitrogen fixation: nitrogen-fixing and hydrogenase activities in extracts of legume root nodules. Ecological study of free living nitrogen fixers in paddy soil. On the abundance of free-living nitrogen fixers in japanese forest soil. Effect of soil on nitrogen fixation by azotobacter vinelandii. Contribution to nitrogen fixation and soil fertility by photosynthetic bacteria. Nitrogen fixation in the open sea. Nitrogen balance in soil and water. On a meaning of life form of plants in relation to their nitrogen utilization. The immobilization and release of nitrogen in soil and the chemical characteristics of nitrogen in those processes. Fate of nitrogenous compounds in the soil. Fractionation of soil humus by ultrafiltration. Geochemical studies on the cycle of carbon and nitrogen in a mesotrophic lake. The diurnal variation of organic constituents of particulate matter in coastal water. Studies on the marine microorganisms taking part in the nitrogen cycle in the sea. The diurnal variation of the number of phytoplankton in natural sea water. Microorganisms related to mineralization of chitin in aquatic environments. Inorganic nitrogen metabolism in coastal and oceanic waters of the pacific.
