Genetic Engineering of Symbiotic Nitrogen Fixation and Conservation of Fixed Nitrogen

1. Plant Factors Impacting Nitrogen Assimilation

   1. Front Matter

      Pages 193-193

      PDF

   2. Measurements and Efficiency of N2 Fixation

      1. Evaluating Potentially Superior <u>Rhizobium</u> Strains in Soybeans

         • L. E. Williams, S. S. Jue, K. G. Cassman, D. A. Phillips

         Pages 195-205

      2. Physiological Interactions Between Alaska Peas and Strains of <u>Rhizobium Leguminosarum</u> that Differ in Plasmid-Linked Genes

         • T. M. DeJong, N. J. Brewin, D. A. Phillips

         Pages 207-216

      3. Evaluating Elite Alfalfa Lines for N2-Fixation Under Field Conditions

         • G. H. Heichel, C. P. Vance, D. K. Barnes

         Pages 217-232

      4. Successes and Problems Encountered While Breeding for Enhanced N2 Fixation in Alfalfa

         • D. K. Barnes, G. H. Heichel, C. P. Vance, D. R. Viands, G. Hardarson

         Pages 233-248

   3. Photosynthesis and Nitrogen Utilization

      1. Biochemical Genetics of Ribulose Bisphosphate Carboxylase/Oxygenase: High Frequency Transfer and Chromosome Mobilization by Broad Host-Range R-Factors in CO2-Fixing Bacteria

         • Kjell Andersen

         Pages 249-256

      2. Photosynthetic Enzyme Regulation by the Ferredoxin/Thioredoxin and the Ferralterin Mechanisms

         • Bob B. Buchanan

         Pages 257-277

      3. Regulation of Photosynthetic CO2 Fixation

         • James T. Bahr, James J. Steffens

         Pages 279-292

      4. Hydrolysis of Ribulose-1,5-Bisphosphate Carboxylase by Partially Purified Endoproteinases of Senescing Primary Barley Leaves

         • B. L. Miller, R. C. Huffaker

         Pages 293-303

      5. The Relationship Between Ribulose Bisphosphate Carboxylase Concentration and Photosynthesis

         • James W. Friedrich, R. C. Huffaker

         Pages 305-312

2. Nitrogen Fixation by Nonlegumes

   1. Front Matter

      Pages 313-313

      PDF

   2. Nitrogen Fixation by Cyanobacterial Heterocysts

      • C. Peter Wolk

      Pages 315-331

   3. Photosynthate Limitation of Nitrogen Fixation in the Blue-Green Alga, Anabaena Variabilis

      • H. Spiller, J. F. Haury, K. T. Shanmugam

      Pages 333-341

   4. Physiological Studies on N₂-Fixing Azolla

      • G. A. Peters, O. Ito, V. V. S. Tyagi, D. Kaplan

      Pages 343-362

   5. Application of Azolla in Crop Production

      • S. N. Talley, E. Lim, D. W. Rains

      Pages 363-384

   6. A New Woody Plant Which Fixes Nitrogen: Chamaebatia Foliolosa (Rosaceae)

      • Rod M. Heisey, C. C. Delwiche

      Pages 385-393

   7. Soil Factors Limiting Nodulation and Nitrogen Fixation in Purshia

      • Timothy L. Righetti, Donald N. Munns

      Pages 395-407

3. Conservation of Fixed Nitrogen

   1. Front Matter

      Pages 409-409

      PDF

   2. Denitrification

      1. Overview of Denitrification

         • W. J. Payne, M. A. Grant

         Pages 411-427

      2. The Physiological Genetics of Denitrification in <u>Pseudomonas</u>

         • Curtis A. Carlson, John L. Ingraham

         Pages 429-443

The present volume developed from a symposium entitled "Enhancing Biological Production of Ammonia From Atmospheric Nitrogen and Soil Nitrate" that was held at Lake Tahoe, California in June, 1980. The meeting was supported by the National Science Foundation, Division of Engineering and Applied Sciences and by the College of Agricultural and Environmental Sciences, University of California, Davis. A total of 99 scientists from 41 insti­ tutions participated. Plants capture solar energy in photosynthesis and use mineral nutrients to produce human food and fiber products. The extent to which such materials are removed from agricultural production sites represents a permanent drain of mineral nutrients. Some plants of agronomic importance such as alfalfa, soybean, and clover associate with soil bacteria and use photosynthetic energy to reduce N2 to NH3. Many other free-living bacteria and some symbioses involving procaryotes and eucaryotes also reduce N2. Such processes repre­ sent one natural mechanism by which Man can augment soil N for agronomic purposes without using fossil fuel to synthesize and distribute N fertilizer. Other metabolic conversions in the N cycle and physical leaching processes remove N made available through N2 fixation. Thus nitrification, denitrification, and utilization of soil N by plants are processes that must be con­ sidered if one is to conserve N captured by N2 fixation. The meeting at Lake Tahoe united scientists from many disci­ plines to review the literature and to discuss current research directed toward the goal stated in the symposium title.

• bacteria
• food
• genetic engineering
• photosynthesis

• University of California, Davis, USA

  J. M. Lyons, R. C. Valentine, D. A. Phillips, D. W. Rains, R. C. Huffaker

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