Symbiotic Nitrogen Fixation

1. Front Matter

   Pages I-VIII

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2. Evolution and diversity in the legume-rhizobium symbiosis: chaos theory?

   • Janet I. Sprent

   Pages 1-10

3. Recent developments in Rhizobium taxonomy

   • Esperanza Martínez-Romero

   Pages 11-20

4. Host range, RFLP, and antigenic relationships between Rhizobium fredii strains and Rhizobium sp. NGR234

   • Hari B. Krishnan, Steven G. Pueppke

   Pages 21-29

5. Rapid identification of Rhizobium species based on cellular fatty acid analysis

   • B. D. W. Jarvis, S. W. Tighe

   Pages 31-41

6. Ammonium sensing in nitrogen fixing bacteria: Functions of the glnB and glnD gene products

   • Christina Kennedy, Natalie Doetsch, Dietmar Meletzus, Eduardo Patriarca, Mohamad Amar, Maurizio Iaccarino

   Pages 43-57

7. Regulation of nodulin gene expression

   • Frans J. De Bruijn, Rujin Chen, Susan Y. Fujimoto, Alexander Pinaev, David Silver, Krzysztof Szczyglowski

   Pages 59-68

8. Synthesis, release, and transmission of alfalfa signals to rhizobial symbionts

   • D. A. Phillips, F. D. Dakora, E. Sande, C. M. Joseph, J. Zoń

   Pages 69-80

9. Role of rhizobial lipo-oligosacharides in root nodule formation on leguminous plants

   • Otto Geiger, Tita Ritsema, Anton A. N. van Brussel, Teun Tak, André H. M. Wijfjes, Guido V. Bloemberg et al.

   Pages 81-89

10. Sucrose transport and hydrolysis in Rhizobium tropici

    • Vasilly I. Romanov, Esperanza Martínez-Romero

    Pages 91-96

11. Shoot/root assimilate allocation and nodulation of Vigna unguiculata seedlings as influenced by shoot light environment

    • M. J. Kasperbauer, P. G. Hunt

    Pages 97-101

12. Mechanism of osmotically regulated N-acetylglutaminylglutamine amide production in Rhizobium meliloti

    • Linda Tombras Smith, Abdul Ameer Allaith, Gary M. Smith

    Pages 103-108

13. What triggers the regulation of nitrogenase activity in forage legume nodules after defoliation?

    • U. A. Hartwig, J. Nösberger

    Pages 109-114

14. Nodulation and nitrogen fixation in extreme environments

    • L. M. Bordeleau, D. Prévost

    Pages 115-125

15. Analysis and regulation of legume inoculants in Canada: The need for an increase in standards

    • P. E. Olsen, W. A. Rice, L. M. Bordeleau, V. O. Biederbeck

    Pages 127-134

16. Recent developments in the actinorhizal symbioses

    • Alison M. Berry

    Pages 135-145

17. Characterization of Bradyrhizobium japonicum chromosomal genes involved in the regulation of hup gene expression in free-living conditions and in controlling hydrogenase activity

    • C. Van Soom, J. Vanderleyden, A. P. Van Gool

    Pages 147-152

18. Characterization of Rhizobium galegae by REP-PCR, PFGE and 16S rRNA sequencing

    • Ingrid Huber, Sonja Selenska-Pobell

    Pages 153-158

19. An hypothesis for the role of malic enzyme in symbiotic nitrogen fixation in soybean nodules

    • David A. Day, Rosanne G. Quinnell, Fraser J. Bergersen

    Pages 159-164

20. Eastern Canadian soybean field trials of rhizobial strain NS 1 in two commercial carriers

    • Richard E. Sanders

    Pages 165-169

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.

• Ammonium
• Assimilat
• DNA
• Ecology
• FAO
• bacteria
• biochemistry
• environment
• evolution
• hydrolysis
• nitrogen
• physiology
• seedlings
• soil

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