Download or read book Investigation of the Potential for Nitrogen Fixation in Rice written by Shinobu Uehara and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Quest for Nitrogen Fixation in Rice written by Jagdish Kumar Ladha and published by Int. Rice Res. Inst.. This book was released on 2000 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features the latest research advances made in developing nitrogen-fixing rice.
Download or read book Nodulation and Nitrogen Fixation in Rice written by Gurdev S. Khush and published by Int. Rice Res. Inst.. This book was released on 1992 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhizobium-legume interactions. Genesis of root nodules and the of host genes. Developmental aspects of the rhizobium-legume symbiosis. Host genetics of the nodulation phenotype. Hormones and nodule formation: cytokinin induction of the Sesbania rostrata early nodulin Enod2. Regul?ation of nodulation genes. Oligosaccharins - oligosaccharides with regulatory functions. The lipo-oligosaccharidic nodulation signals of Rhizobium meliloti. Role of exopolysaccharides in nodulation. Bacterial entry into roots. Nonlegume N2-fixing asociations. Symbiosis with frankia. Exploring new soil bacteria. Rhizobium nodulation of nonlegumes. Nodulation genes and biosynthesis of inodule acetic acid (IAA) in Azospirillum brasilense. Ammonium excretion by NilflL mutants of Azotobacter vinelandii. Genetics of associative nitrogen fixation in wheat. Potential for development of novel N2-fixing associations. Potential andlimitations of developing new plant-microbe interactions. Application of present knowledge on rhizobial host specificity to obtain efficientnodulation and nitrogen fixation of rice. Genetic transformation of rice and molecular basic of agroinfection. Nitrogen fixation in para-nodulated wheat. Invasion of nonlegume plants by diazotrophic bacteria. Development of nodulelike structure on rice roots.
Download or read book Opportunities for Biological Nitrogen Fixation in Rice and Other Non Legumes written by J. K. Ladha and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the next 30 years, farmers must produce 70% more rice than the 550 millions tons produced today to feed the increasing population. Nitrogen (N) is the nutrient that most frequently limits rice production. At current levels ofN use efficiency, we will require at least double the 10 million tons of N fertilizer that are currently used each year for rice production. Global agriculture now relies heavily on N fertilizers derived from petroleUIll, which, in turn, is vulnerable to political and economic fluctuations in the oil markets. N fertilizers, therefore, are expensive inputs, costing agriculture more than US$45 billion annually. Rice suffers from a mismatch of its N demand and N supplied as fertilizer, resulting in a 50-70% loss of applied N fertilizer. Two basic approaches may be used to solve this problem One is to regulate the timing ofN application based on needs of the plants, thus partly increasing the efficiency of the plants' use of applied N. The other is to increase the ability of the rice system to fix its own N. The latter approach is a long-term strategy, but it would have enormous environmental benefits while helping resource-poor farmers. Furthermore, farmers more easily adopt a genotype or variety with useful traits than they do crop and soil management practices that may be associated with additional costs.
Download or read book Opportunities for Biological Nitrogen Fixation in Rice and Other Non legumes written by Jagdish Kumar Ladha and published by . This book was released on 1997 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text looks at the advances in understanding symbiotic Rhizobium-legume interactions at the molecular level, the discovery of endophytic interactions of nitrogen-fixing organisms with non-legumes and the ability to introduce new genes into rice through transformation. This has created an opportunity to investigate the possibilities for incorporating N2 fixation capability in rice. During a think-tank workshop organized by IRRI in 1992, the participants reaffirmed that such opportunities do exist for cereals and recommended that rice be used as a model system. Subsequently, IRRI developed a New Frontier Project to co-ordinate the worldwide collaborative efforts among research centers committed to reducing dependency of rice on mineral N resources. An international Rice Biological Nitrogen Fixation (BNF) working group was established to review, share research results/materials, and to catalyze research.
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Mustafizur Rahman and published by Springer Science & Business Media. This book was released on 2013-04-09 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation (BNF) has become important in rice farming systems because this process diminishes the need for expensive chemical fertilizers which have been associated with numerous health and environmental problems. The extensive exploitation of BNF would provide economic benefits to small farmers, avoiding all malign influences of chemical fertilizers. Meanwhile, advances in biotechnology have brought rice genetics to the threshold of new opportunities for increasing rice production. This volume focuses, in six different sessions, on the role of BNF in the improvement of rice production in the light of the current state of the art of BNF technology transfer and diffusion. New ideas on BNF technology in research, extension information and inoculant technology are also included, together with the socio-economic impacts of using BNF in rice farm systems.
Download or read book Efficiency of Nitrogen Fertilizers for Rice written by International Network on Soil Fertility and Fertilizer Evaluation for Rice. Meeting and published by Int. Rice Res. Inst.. This book was released on 1987 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Nitrogen Fixation Sustainable Agriculture and the Environment written by Yi-Ping Wang and published by Springer Science & Business Media. This book was released on 2005-08-26 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers all aspects of fundamental and applied nitrogen-fixation research, extending from biochemistry and chemistry through genetics, regulation and physiology to agricultural practice and environmental impact. It describes recent progress on studies of potential catalysts for nitrogen fixation; how the N2-fixing process is regulated in living cells; the use and impact of genetics and genomics on our understanding of the biological process; the wide variety of associations of nitrogen-fixing microbes with plants, including the formalized Rhizobium-legume and actinorrhizal associations as well as the less formalized associative and endophytic interactions; and the impact of nitrogen fixation in agriculture and forestry, including its effect on the environment. This volume provides an up-to-date referenced source, which can be readily accessed by all practicing and otherwise interested proponents of nitrogen fixation research, including those with related interests in the areas of plant and microbial science, genomics, plant-microbe interactions, genetics and regulation, plant growth and biocontrol, agriculture, forestry, ecology, taxonomy and evolution.
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Sisir K. Dutta and published by . This book was released on 1991 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Nitrogen Fixation written by and published by National Academies. This book was released on 1994 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen and Rice written by International Rice Research Institute and published by . This book was released on 1979 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Contains the papers presented at the symposium, summaries of discussions and the recommendation remarks for further research and international cooperation."--Foreword.
Download or read book Limitations and Potentials for Biological Nitrogen Fixation in the Tropics written by J. Dobereiner and published by Springer. This book was released on 1978-02 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cerrado a region of high agricultural potential that requires nitrogen; Potential for nitrogen fixation in tropical legumes and grasses; Free-living bacteria; Nitrogen fixation by soil algae of temperate and tropical soils; Contribution of the legume-Rhizobium symbiosis to the ecosystem and food production; Plant influence in symbiotic nitrogen fixation; Plant photosynthesis; Interactions of plant photosynthesis with dinitrogen fixation and nitrate assimilation; Some aspects of the Alnus-type root nodule symbiosis; Legumes and acid soils; Micronutrient requirements of legume-Rhizobium symbiosis in the tropics; Ecology of legume-Rhizobium symbiosis; Nitrogenase systems; Relationship between hydrogen metabolism and nitrogen fixation in legumes; Ammonia assimilation in N2-Fixing systems; Genetics and regulation of nitrogen fixation; Leghaemoglobin, oxygen supply and nitrogen fixation: studies with soybean nodules; Nitrogen fixation by Rhizobium spp. in laboratory culture media; Limiting factors in grass nitrogen fixation; Physiology and biochemistry of Spirillum lipoferum; Taxonomy of the root-associated nitrogen fixing bacterium Spirillum lipoferum; Abstracts of original papers; Abstracts of posters.
Download or read book Opportunities for Biological Nitrogen Fixation in Rice and Other Non legumes written by J. K. Ladha and published by . This book was released on 1997 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Engineering for Nitrogen Fixation written by Alexander Hollaender and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a time in scientific research when a number of developments coincide making it possible to progress with a tough and complicated problem. It is believed that such a time has come in the area of biological nitrogen fixation. A better understanding of photosynthesis, cell hybridization, plasmid, and gene transfer between cells not necessarily genetically related, have opened new avenues of research. New developments in traditional genetics, cell biology, biochemistry, including enzyme chemistry, and plant physi ology have brought about the feeling this is a most appro priate time to pull together the different approaches in a conference where the lines of research could be discussed and thus help to speed up developments in this area. What makes biological nitrogen fixation especially im portant is the promise that a good understanding of the basic problem would help us to make organisms more amenable to fix nitrogen, not only in symbiosis with legumes, but also with other plant species and develop a wider variety of organisms with the ability to fix N • It will also 2 encourage a search for naturally occurring N2 fixing organ isms other than the traditional N2 fixers. Some success has already been encountered in this area. Success in broadening the field of nitrogen fixing would help to increase food supply, especially in de veloping countries which cannot afford to purchase synthetic nitrogen sources.
Download or read book Properties and Management of Soils in the Tropics written by Pedro A. Sanchez and published by Cambridge University Press. This book was released on 2019-01-10 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-awaited second edition of classic textbook, brought completely up to date, for courses on tropical soils, and reference for scientists and professionals.
Download or read book Management of Biological Nitrogen Fixation for the Development of More Productive and Sustainable Agricultural Systems written by J.K. Ladha and published by Int. Rice Res. Inst.. This book was released on 1995-09-30 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprinted from Plant and Soil, v.174, nos.1-2 (1995), this volume is devoted to discussions on the role of biological nitrogen fixation (BNF) in agricultural sustainability. Papers presented on BNF in crop forage and tree legumes are augmented with discussion of integrated farming systems involving BNF, soil and N management, and recycling of legume residues. BNF by non-legumes is discussed and attempts to transform cereals into nodulating plants are critically reviewed. Also described are advances in the development of new methodologies to understand symbiotic interactions and to assess N-2 fixation in the field; means of enhancing BNF through plant and soil management; breeding and selection; problems encountered in exploiting BNF under farmers' field conditions; and promising approaches to improve BNF exploitation. Lacks a subject index. Annotation copyright by Book News, Inc., Portland, OR
Download or read book Symbiotic Nitrogen Fixation written by P. Graham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
