Symbiotic Nitrogen Fixation

Symbiotic Nitrogen Fixation PDF Author: P. Graham
Publisher: Springer Science & Business Media
ISBN: 9401110883
Category : Science
Languages : en
Pages : 206

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Book Description
During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.

Symbiotic Nitrogen Fixation

Symbiotic Nitrogen Fixation PDF Author: P. Graham
Publisher: Springer Science & Business Media
ISBN: 9401110883
Category : Science
Languages : en
Pages : 206

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Book Description
During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.

Azospirillum VI and Related Microorganisms

Azospirillum VI and Related Microorganisms PDF Author: Istvan Fendrik
Publisher: Springer Science & Business Media
ISBN: 364279906X
Category : Science
Languages : en
Pages : 546

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Book Description
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.

Advances in Biology and Ecology of Nitrogen Fixation

Advances in Biology and Ecology of Nitrogen Fixation PDF Author: Takuji Ohyama
Publisher: BoD – Books on Demand
ISBN: 9535112163
Category : Science
Languages : en
Pages : 286

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Book Description
Biological nitrogen fixation has essential role in N cycle in global ecosystem. Several types of nitrogen fixing bacteria are recognized: the free-living bacteria in soil or water; symbiotic bacteria making root nodules in legumes or non-legumes; associative nitrogen fixing bacteria that resides outside the plant roots and provides fixed nitrogen to the plants; endophytic nitrogen fixing bacteria living in the roots, stems and leaves of plants. In this book there are 11 chapters related to biological nitrogen fixation, regulation of legume-rhizobium symbiosis, and agriculture and ecology of biological nitrogen fixation, including new models for autoregulation of nodulation in legumes, endophytic nitrogen fixation in sugarcane or forest trees, etc. Hopefully, this book will contribute to biological, ecological, and agricultural sciences.

Biological nitrogen fixation in forest ecosystems: foundations and applications

Biological nitrogen fixation in forest ecosystems: foundations and applications PDF Author: John C. Gordon
Publisher: Springer Science & Business Media
ISBN: 9789024728497
Category : Business & Economics
Languages : en
Pages : 358

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Book Description
Silvicultural systems and biological nitrogen fixation; Morphology of nitrogen fixers in forest ecosystems; Taxonomy and distribution of non-legume nitrogen-fixing systems; Isolation and culture of nitrogen-fixing organisms; Wheeler, biochemical, physiological and environmental aspects of symbiotic nitrogen fixation; Analysis of nitrogen fixation; Agricultural and horticultural systems: implications for forestry; Nitrogen fixing plants in forest plantation management; Nitrogen fixation in North American forestry: research and application; Application of biological nitrogen fixation in European silviculture; Nitrogen fixation in Southeast Asian forestry: research and practice; Biological nitrogen fixation in forestry: research and practice in Australia and New Zealand.

Nitrogen Fixation with Non-Legumes

Nitrogen Fixation with Non-Legumes PDF Author: K.A. Malik
Publisher: Springer
ISBN: 9789401062022
Category : Science
Languages : en
Pages : 362

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Book Description
Diazotrophic bacteria convert atmospheric nitrogen to plant-useable form and this input of nitrogen through biological fixation is of great agronomic importance. The contributions presented in this volume relate to free-living nitrogen fixers and the diazotrophs associated with plants. Symbiotic association of Frankia with non-legumes and cyanobacterial associations are also discussed. Research topics covered in this volume include the biochemistry and genetics of diazotrophs, recent developments in improvement of plant-microbe interactions and their molecular basis, the use of molecular probes in taxonomy and ecology of diazotrophs and reports on field applications, agronomic importance and improvement in methodologies for assessing their contribution to plants. This book provides valuable information not only for researchers working in the field of biological nitrogen fixation but also for biochemistry, molecular biologists, microbiologists and agronomists.

Inanimate Life

Inanimate Life PDF Author: George M. Briggs
Publisher:
ISBN: 9781942341826
Category :
Languages : en
Pages :

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Book Description


Nitrogen Fixation in Tropical Cropping Systems

Nitrogen Fixation in Tropical Cropping Systems PDF Author: K. E. Giller
Publisher: CABI
ISBN: 1845933044
Category : Science
Languages : en
Pages : 443

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Book Description
Nitrogen fixation by leguminous plants is especially important when farmers are trying to minimise fertilizer use for cost or environmental reasons. This second edition of the highly successful book, first published in 1991, contains thoroughly updated and revised material on the theory and practice of nitrogen fixation in tropical cropping systems.

Properties and Management of Soils in the Tropics

Properties and Management of Soils in the Tropics PDF Author: Pedro A. Sanchez
Publisher: Cambridge University Press
ISBN: 1107176050
Category : Business & Economics
Languages : en
Pages : 685

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Book Description
Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.

Biological Nitrogen Fixation and Sustainability of Tropical Agriculture

Biological Nitrogen Fixation and Sustainability of Tropical Agriculture PDF Author: African Association for Biological Nitrogen Fixation. Conference
Publisher: IITA
ISBN: 9780471935605
Category : Science
Languages : en
Pages : 512

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Book Description
Biological nitrogen fixation in tropical agrosystems: twenty years of biological nitrogen fixation research in Africa; Sustainable agriculture: definition and measurement; Biological nitrogen fixation systems in tropical ecosystems: an overview; A protocol for screening legumes as soil-improving crops; The sustenance of tropical agriculture with multipurpose azolla; Facteurs pedoclimatiques limitant la lixation biologique l'azole; Response of some tropical nitrogen-fixing woody legumes to drought and inoculation with mycorrhiza; Improvement to the Phaseolus/Rhizobium symbiosis, with particular reference to the Caribbean region; Effect of pest management systems on biological nitrogen fixation; Agronomic evaluation of a rock phosphate as a phosphorus source for Leucaena leucocephala grown on an utisol; Nodulation of soybean grown under field conditions and inoculated with Bradyrhizobium japonicum strains; Effect of fertilization and Rhizobium inoculation on the growth of Leucaena and Gliricidia on an alfisol in south-western Nigeria; Early growth and nodulation in Leucaena and Gliricidia and the effects or pruning on biomass productivity; Comparative stude on the growth and productivity of Sesbania and Leucaena in the Central Plateau region, Rwanda; Supernoculation and non-nodulation mutants of soybean; Genetically improved rhizobia and their use in agriculture; Sustainability of nitrogen-fixing cropping systems: Nodulation and nitrogen fixation and transfer in a cowpea/rice cropping system; The role of legumes in sustaiing soil productivity and controlling soil erosion; Fitting soil-improving legumes into inland valley rice-baes cropping systems in West Africa; Herbage yield and soil fertility restoration potential of some tropical forage legumes.

Handbook for Rhizobia

Handbook for Rhizobia PDF Author: Padma Somasegaran
Publisher: Springer Science & Business Media
ISBN: 1461383757
Category : Technology & Engineering
Languages : en
Pages : 456

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Book Description
Rhizobia are bacteria which inhabit the roots of plants in the pea family and "fix" atmospheric nitrogen for plant growth. They are thus of enormous economic importance internationally and the subject of intense research interest. Handbook for Rhizobia is a monumental book of practical methods for working with these bacteria and their plant hosts. Topics include the general microbiological properties of rhizobia and their identification, their potential as symbionts, methods for inoculating rhizobia onto plants, and molecular genetics methods for Rhizobium in the laboratory. The book will be invaluable to Rhizobium scientists, soil microbiologists, field and laboratory researchers at agricultural research centers, agronomists, and crop scientists.