Advances in Nitrogen Fixation Research

Application of Dinitrogen Fixation in Agriculture and Forestry.- The Application of Molecular Genetics in Agriculture.- Nitrogen-Fixing Trees in the Tropics: Potentialities and Limitations.- Biological Dinitrogen Fixation in Temperate Zone Forestry: Current Use and Future Potential.- Mircen Programmes and the Impact on the Application of Biological Nitrogen Fixation.- Poster Discussions 1A: Measuring Nitrogen Fixation.- Poster Papers (First Author Only).- Poster Discussions IB: Application of Biological Nitrogen Fixation for Increasing Crop Production.- Poster Papers (First Author Only).- Chemistry of Dinitrogen Fixation.- The Binding and Reactivity of Dinitrogen.- Hydrazido(l), 1,2-Hydrazido(2-), and Hydrazido(4-) Complexes of Tungsten(VI).- The Synthesis Structures and Electronic Properties of Fe-Mo-S Polynuclear Aggregates. Molecules of Elementary Structural Compliance with the Fe-Mo-S Aggregate of Nitrogenase.- Poster Discussions 2: Recent Progress in the Chemistry of Dinitrogen Fixation.- Poster Papers (First Author Only).- Enzymology of Nitrogenase.- Structure and Reactivity of Nitrogenase - An Overview.- Substrate Interactions with Nitrogenase and its Fe-Mo Cofactor: Chemical and Spectroscopic Investigations.- Iron-Sulfide Content and ATP Binding Properties of Nitrogenase Component II from Azotobactervinelandii.- The Mechanism of Substrate Reduction by Nitrogenase.- Nitrogenase from nifV Mutants of Klebsiellapneumoniae.- Poster Discussions 3: Enzymology of Nitrogenase.- Poster Papers (First Author Only).- Physiology of Diazotrophs.- Oxygen and the Physiology of Diazotrophic Microorganisms.- Regulation of Nitrogen Fixation in Photosynthetic Bacteria.- Energy Generation and Hydrogen Metabolism in Rhizobium.- Physiology and Biochemistry of N2-Fixation by Cyanobacteria.- Poster Discussions 4A: Physiology of Free-Living Diazotrophs Including Cyanobacteria and Azospirillum with Special Attention to NH4+ Metabolism, H2 Metabolism and O2 Protection.- Poster Papers (First Author Only.- Poster Discussions 4B: Metabolism of Rhizobium and Azotobacter.- Poster Papers (First Author Only.- Microbiology and Physiological Ecology of Diazotrophs.- Ecology and Microbiology of Symbiotic Diazotrophs.- The Ecology of Rhizobium in the Rhizosphere: Survival, Growth and Competition.- Effects of Drought and Salinity on Heterotrophic Nitrogen Fixing Bacteria and on Infection of Legumes by Rhizobia.- Response of Cereal and Forage Grasses to Inoculation with N2- Fixing Bacteria.- Ultrastructure and Nitrogenase Activity of Frankia Grown in Pure Culture and in Actinorrhizae of Alnus, Colletia, and Datisca spp..- Poster Discussions 5A: Stem-Nodulated Legumes and Nitrogen-Fixing Trees.- Poster Papers (First Author Only.- Poster Discussions 5B: Frankia Symbiosis.- Poster Papers (First Author Only.- Specificity in Symbiotic Dinitrogen Fixation.- Recent Ideas on the Physiology of Infection and Nodulation.- Preinvasion Events in Legume/Rhizobium Symbiosis.- The Polysaccharides and Oligosaccharides of Rhizobium and their Role in the Infection Process.- Poster Discussions 6: Recognition.- Poster Papers (First Author Only).- Physiology of Infected Plants.- Carbon Metabolism in the Legume Nodule.- The Cellular and Intracellular Organization of the Reactions of Ureide Biogenesis in Nodules of Tropical Legumes.- Energy Metabolism in Nodulated Roots.- The Unique Properties of the Symbiotic Anabaenaazollae in the Water Fern Azolla: Metabolism and Intracellular Recognition.- Oxygen, Hemoglobins, and Energy Usage in Actinorhizal Nodules.- The Role of Peribacteroid Membrane in Legume Root Nodules.- Symbiotic Nitrogen Fixation Involving Rhizobium and the Non-Legume Parasponia.- Poster Discussions 7A: Photosynthesis and Hydrogen Metabolism in Relation to Nitrogenase Activity of Legumes.- Poster Papers (First Author Only).- Poster Discussions 7B: Environmental Effects on Nodulated Plants.- Poster Papers (First Author Only).- Plant Genes Involved in Dinitrogen Fixation.- Leghemoglobin and Nodulin Genes: Two Major Groups of Host Genes Involved in Symbiotic Nitrogen Fixation.- Nitrogen and Carbon Assimilation in Medicagosativa Mediated by Host Plant Genes for Nodule Effectiveness.- The soybean leghemoglobin genes.- Expression of Nodulin Genes During Nodule Development from Effective and Ineffective Root Nodules.- Poster Discussions 8: Plant Genes Involved in Nodulation and Symbiosis.- Poster Papers (First Author Only).- Bacterial Genetics.- Advances in the Genetics of Free-Living and Symbiotic Nitrogen Fixing Bacteria.- Molecular Cloning and Organisation of Genes Involved in Symbiotic Nitrogen Fixation in Different Rhizobium Species.- Regulation of the Nitrogen Fixation (nif) Genes of Klebsiellapneumoniae and Rhizobiummeliloti: Role of Nitrogen Regulation (ntr) Genes.- Transcriptional Control of the nif Regulon in Klebsiellapneumoniae.- Aspects of Genetics of Azotobacters.- Organization and Transcription of Nitrogenase Genes in the Cyanobacterium Anabaena.- The Expression of Sym-Plasmids and Ti Plasmids in Rhizobia and Agrobacteria.- Poster Discussions 9A: Organization of Rhizobium Symbiotic Genes.- Poster Papers (First Author Only).- Poster Discussions 9B: Rhizobium Plasmids.- Poster Papers (First Author Only).- Poster Discussions 9C: Nif Genetics of Free-Living Diazotrophs.- Poster Papers (First Author Only).- Author Index.