Free-Living Rhizobium Strain Able To Grow on N 2 as the Sole Nitrogen Source

Author:

Dreyfus B. L.1,Elmerich C.1,Dommergues Y. R.1

Affiliation:

1. Office de la Recherche Scientifique et Technique Outre-Mer, B.P. 1386 Dakar, Senegal, and Unité de Physiologie Cellulaire, Institut Pasteur, 75724 Paris, Cedex 15, France2

Abstract

A Rhizobium strain isolated from stem nodules of the legume Sesbania rostrata was shown to grow on atmospheric nitrogen (N 2 ) as the sole nitrogen source. Non-N 2 -fixing mutants isolated directly on agar plates formed nodules that did not fix N 2 when inoculated into the host plant.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference9 articles.

1. Properties of terminal oxidase systems of bacteroids from root nodules of soybean and cowpea and of N2-fixing bacteria grown in continuous culture;Bergersen F. J.;J. Gen. Microbiol.,1980

2. Nitrogenfixing nodules induced by Rhizobium on the stem of the tropical legume Sesbania rostrata;Dreyfus B. L.;FEMS Microbiol. Lett.,1981

3. Dreyfus B. L. and Y. R. Dommergues. 1981. Stem nodules of the tropical legume Sesbania rostrata p. 471. In A. H. Gibson and W. E. Newton (ed.) Current perspectives in nitrogen fixation. Australian Academy of Science Canberra Australia.

4. Acetylene reduction by pure cultures of rhizobia;Kelster D. L.;J. Bacteriol.,1975

5. Nitrogenase activity in rhizobia in absence of plant host;Kurz W. G. W.;Nature (London),1975

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