| T00043 | mlo | Mesorhizobium japonicum MAFF 303099 |
| T04711 | mln | Mesorhizobium loti NZP2037 |
| T01401 | mci | Mesorhizobium ciceri biovar biserrulae |
| T08712 | mcic | Mesorhizobium ciceri CC1192 |
| T01542 | mop | Mesorhizobium opportunistum |
| T02417 | mam | Mesorhizobium australicum |
| T04446 | mamo | Mesorhizobium amorphae |
| T04915 | mesw | Mesorhizobium sp. WSM1497 |
| T05904 | mesm | Mesorhizobium sp. M9A.F.Ca.ET.002.03.1.2 |
| T05918 | mesp | Mesorhizobium sp. Pch-S |
| T06432 | mhua | Mesorhizobium huakuii |
| T06715 | mjr | Mesorhizobium jarvisii |
| T06791 | merd | Mesorhizobium erdmanii |
| T07809 | mesr | Mesorhizobium sp. 8 |
| T08462 | moh | Mesorhizobium onobrychidis |
| T09205 | mmei | Mesorhizobium mediterraneum |
Genus: Mesorhizobium