Biological Nitrogen FixationNitrogen fixation is a key component of the nitrogen cycle, one of the most fundamental cycles in the biosphere. Conversion of atmospheric nitrogen into organic nitrogen compounds can be carried out only by certain bacteria and blue-green algae (cyanobacteria). Some nitrogen fixing bacteria live symbiotically with leguminous plants such as peas, beans, clover, and certain tropical trees in nodules on the plants' roots, while others live independently in the soil and aquatic habitats. By the activity of these microorganisms, the soil is enriched with the nitrogen required for plant growth and function. Thus the topic is of considerable practical as well as fundamental importance. In Biological Nitrogen Fixation, the leading researchers in nitrogen fixation from all over the world contribute up-to-the-minute general reviews on all aspects of the subject, from the molecular biology and genetics to the biochemistry, physiology, and ecology of nitrogen fixation. This compendium of current research is an indispensable reference for all involved in nitrogen fixation research, and of use to all who deal indirectly with the subject. It will also serve as a thoroughly up-to-date textbook for graduate students in microbiology, plant science, biochemistry, molecular biology, plant pathology, agronomy, and genetics. |
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Contents
Highlights in Biological Nitrogen Fixation during the Last 50 Years | 1 |
Phylogenetic Classification of NitrogenFixing Organisms | 43 |
Physiology of Nitrogen Fixation in FreeLiving Heterotrophs | 87 |
Nitrogen Fixation by Photosynthetic Bacteria | 135 |
Nitrogen Fixation in Cyanobacteria | 166 |
Nitrogen Fixation by Methanogenic Bacteria | 191 |
Associative NitrogenFixing Bacteria | 212 |
Actinorhizal Symbioses | 259 |
The Rhizobium Symbiosis of the Nonlegume Parasponia | 497 |
Genetic Analysis of Rhizobium Nodulation | 560 |
Nodulins in Root Nodule Development | 598 |
Plant Genetics of Symbiotic Nitrogen Fixation | 625 |
Molecular Genetics of Bradyrhizobium Symbioses | 648 |
The Enzymology of MolybdenumDependent Nitrogen Fixation | 685 |
Alternative Nitrogen Fixation Systems | 736 |
Biochemical Genetics of Nitrogenase | 763 |
Ecology of Bradyrhizobium and Rhizobium | 293 |
The Rhizobium Infection Process | 349 |
Physiology of NitrogenFixing Legume Nodules Compartments and Functions | 399 |
Hydrogen Cycling in Symbiotic Bacteria | 432 |
Evolution of NitrogenFixing Symbioses | 461 |
Common terms and phrases
acid activity addition analysis appears associated Azospirillum bacteria Bacteriol binding Biochem Biol Bradyrhizobium cells characterization cluster component concentration containing culture determined effect electron Environ enzyme evidence expression extracts factor FeMo-cofactor Figure formation Frankia function genes genetic growth host hydrogenase identified increased indicated induced infection infection thread inhibition interaction involved isolated japonicum Klebsiella known legumes leguminosarum membrane Microbiol MoFe protein molecular mutants N2 fixation Nature nifA nitrogen fixation nitrogenase nitrogenase activity observed organisms oxidation oxygen Parasponia plant plasmid pneumoniae populations possible presence promoter properties recently reduction region regulation reported residues rhizobia Rhizobium Rhizobium meliloti role root hair root nodules sequence showed shown signal similar soil soybean species strains structure studies suggested symbiotic synthesis trifolii viciae
Popular passages
Page 870 - Kustu, S., 1985, Products of nitrogen regulatory genes ntrA and ntrC of enteric bacteria activate glnA transcription in vitro: evidence that the ntrA product is a sigma factor, Proc.