Comparison of nucleic acid content in populations of free-living and symbiotic Rhizobium meliloti by flow microfluorometry.

AUTOR(ES)

Paau, A S

RESUMO

Populations of symbiotic Rhizobium meliloti extracted from alfalfa nodules were shown by flow microfluorometry to contain a significant number of bacteroids with higher nucleic acid content than the free-living rhizobia. Bacteroids with lower nucleic acid content than the free-living bacteria were not detected in significant quantities in these populations. These results indicate that the incapability of bacteroids to reestablish growth in nutrient media may not be caused by a decrease in nucleic acid content of the symbiotic rhizobia.

Documentos Relacionados

• Hydrogen Evolution from Alfalfa and Clover Nodules and Hydrogen Uptake by Free-Living Rhizobium meliloti†
• Ultrastructure of Free-Living and Nitrogen-Fixing Forms of Rhizobium meliloti as Revealed by Freeze-Etching
• Succinate transport by free-living forms of Rhizobium japonicum.
• The katA Catalase Gene Is Regulated by OxyR in both Free-Living and Symbiotic Sinorhizobium meliloti
• Regulation of Rhizobium meliloti exo genes in free-living cells and in planta examined by using TnphoA fusions.