Table 2.
Genomic features of free-living (Rhodopseudomonas) and symbiotic (Bradyrhizobium) members of the Bradyrhizobiaceae.
| Bacteria | Average numbers of genes in: | % of accessory genes in: | References | ||
|---|---|---|---|---|---|
| Individual genomes | Pangenomes | Individual genomes | Pangenomes | ||
| Rhodopseudomonas | 5,408 | 8,000 | 22.5 | 52.7 | Oda et al. (2008) |
| Bradyrhizobium (phototrophic)* | 7,110 | 12,040 | 33.6 | 60.2 | Mornico et al. (2012) |
| Bradyrhizobium (heterotrophic)** | 9,821 | >35,000 | 72.0 | >92.0 | Tian et al. (2012) |
*strains devoid of nod genes and nodulating the stems of Aeschynomene not using Nod factors.
**over 15 species from two groups represented by B. japonicum and B. elkanii nodulate the roots in diverse legumes (mostly from the Phaseoleae tribe) using Nod factors encoded by nod genes.