Five S. meliloti genomes have been sequenced to date: Rm1021, AK83, BL225C, Rm41, and SM11 with 1021 considered to be the wild type.
Secuenciáronse ata agora cinco xenomas de S. meliloti: Rm1021, AK83, BL225C, Rm41, e SM11 e considérase que 1021 é o tipo silvestre.