Free-living Rhizobium strain able to grow on n(2) as the sole nitrogen source.
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.
Dreyfus
B L
BL
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, France.
Elmerich
C
C
Dommergues
Y R
YR