Enhancement of nitrogen-fixation with rhizobial tan variants

摘要

Legumes inoculated with tryptophan catabolic variants (tan variants) of wild-type bradyrhizobia are characterized by an enhanced capacity to fix atmospheric nitrogen as compared to parent strains. Responses of the symbiotic system to the variants include an auxinic stimulation of root growth, an enhancement of nodulation, and an increase in the nitrogen-fixation activities of the nodulated root systems.