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 Research Awards Index written by and published by . This book was released on with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Grants Index written by National Institutes of Health (U.S.). Division of Research Grants and published by . This book was released on 1972 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laboratory Studies of Nitrogen Fixation Under Conditions Simulating Lake Environments written by Richard W. Tew and published by . This book was released on 1959 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of a Continuous Cultivation of Azotobacter Vinelandii Under Non nitrogen Fixing Conditions written by Dorothea E. Reilly and published by . This book was released on 1980 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 Nitrogen Fixation by Azotobacter in a Natural Aquatic Environment written by Sarah Josephine Chapman and published by . This book was released on 1972 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Role of Calcium and Acetate in Nitrogen Fixation by Azotobacter Vinelandii written by James Allen Bush and published by . This book was released on 1959 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Bacteriological Proceedings written by American Society for Microbiology and published by . This book was released on 1971 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts of the annual meeting.

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 Effect of Hydroxylamine and Hydrazine Derivatives on the Growth and Respiration of Azotobacter Vinelandii and Nitrogen Fixation by Desulfovibrio Desulfuricans written by Nancy Sabin Winter and published by . This book was released on 1958 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Azotobacteraceae written by J.P. Thompson and published by . This book was released on 1979 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Growth of Azotobacter Vinelandii on Low Concentrations of 57Fe written by Kathy A. Jacobson and published by . This book was released on 1981 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Azotobacter in Sustainable Agriculture written by Neeru Narula and published by . This book was released on 2000 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: