Nitrogen fixation research progress

1. Microbial Genetics Relevant to Symbiotic Nitrogen Fixation

   1. Poster Summaries

      1. Genes Involved in Nodule Development

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 132-140

      2. Genes Involved in Competitiveness

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 141-145

      3. Miscellaneous

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 146-154

      4. Discussion Group Summary (Convenor: G. Ditta)

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 155-156

   2. Organization and Regulation of nif Genes

      1. Organization and Regulation of Symbiotic Nitrogen Fixation Genes from <u>Bradyrhizobium</u> <u>Japonicum</u>

         • H. Hennecke, A. Alvarez-Morales, M. Betancourt-Alvarez, S. Ebeling, M. Filser, H.-M. Fischer et al.

         Pages 157-163

      2. Organization and Regulation of <u>Rhizobius meliloti</u> and <u>Parasponia Bradyrhizobium</u> Nitrogen Fixation Genes

         • Frederick M. Ausubel, William J. Buikema, Christopher D. Earl, John A. Klingensmith, B. Tracy Nixon, Wynne W. Szeto

         Pages 165-171

      3. <u>Rhizobium</u> <u>phaseoli</u>: Nitrogen Fixation Genes and DNA Reiteration

         • Rafael Palacios, Margarita Flores, Esperanza Martinez, Carmen Quinto

         Pages 173-179

   3. Poster Summaries

      1. Poster Summaries

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 181-192

   4. Genes Involved in Nodule Functioning

      1. A Model of Nutrient Exchange in the <u>Rhizobium</u>-Legume Symbiosis

         • Michael L. Kahn, Jennifer Kraus, John E. Somerville

         Pages 193-199

      2. Genes Involved in the Carbon Metabolism of Bacteroids

         • Clive W. Ronson, Patricia M. Astwood

         Pages 201-207

      3. Characterization, Significance and Transfer of Hydrogen Uptake Genes from <u>Rhizobium</u> <u>Japonicum</u>

         • G. R. Lambert, A. R. Harker, M. Zuber, D. A. Dalton, F. J. Hanus, S. A. Russell et al.

         Pages 209-215

   5. Poster Summaries

      1. Carbon Metabolism and Ammonia Assimilation

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 217-226

      2. Hydrogen Metabolism

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 227-233

      3. Discussion Group Summary (Convenor: N.J. Brewin)

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 235-235

2. Recognition and Infection in Symbiosis

   1. Front Matter

      Pages 237-237

      PDF

   2. Recognition and Infection of Clover Root Hairs by Rhizobium Trifolii

      • Frank B. Dazzo, Rawle I. Hollingsworth, John E. Sherwood, Mikiko Abe, Estelle M. Hrabak, Alicia E. Gardiol et al.

      Pages 239-245

   3. Recognition and Infection by Slow-Growing Rhizobia

      • Wolfgang D. Bauer, T. V. Bhuvaneswari, Harry E. Calvert, I. J. Law, Nasir S. A. Malik, S. J. Vesper

      Pages 247-253

   4. Poster Summaries

      1. Competition and Attachment

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 255-261

      2. Host-Induced Phenomena

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 262-264

      3. Compositional Variations

         • H. J. Evans, P. J. Bottomley, W. E. Newton

         Pages 265-270

This Symposium, held August 4-10, 1985 on the campus of Oregon State University in Corvallis, is the sixth of a series of international symposia concerned with broad aspects of the fixation of nitrogen gas by biological and chemical means. The first symposium of this series was held in Pullman, Washington (1974), the second in Salamanca, Spain (1976), the third in Madison, Wisconsin (1978), the fourth in Canberra, Australia (1980) and the fifth in Noordwij~erhout, The Netherlands (1983). Prior to the organization of these symposia, small groups of usually no more than 10 or 12 of the now "old guard" in the field met in some obscure places, including Butternut Lake, Wisconsin, Sanabel Island, Florida and Camp Sage hen in California, to discuss developments in the field. Concern about an energy crisis in the nineteen seventies served as an impetus for the organization of workshops and preparatiol. of publications urging government agencies to provide funds for the support of several neglected areas in the field, including the genetics of nitrogen-fixing organisms and the biology of Frankia. In looking back, it becomes apparent that there have been drastic changes in the extent of research support in the field and in the contents of the programs of the continuing series of symposia.

• Assimilat
• Bur
• Evolution
• Mutant
• Symbiose
• bean
• burr
• metabolism
• microorganism
• nitrogen
• pea
• physiology
• transcription

• Laboratory for Nitrogen Fixation Research, Oregon State University, Corvallis, USA

  H. J. Evans

• Departments of Microbiology and Soil Science, Oregon State University, Corvallis, USA

  P. J. Bottomley

• Western Regional Research Center, USDA, ARS, Albany, USA

  W. E. Newton

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