Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Negibacteria (Rjheekñndd)
Proteobacteria (Purple bacteria & relatives)
Alphaproteobacteria
Rhizobiales (Hyphomicrobiales)
Phyllobacteriaceae
Mesorhizobium
Mesorhizobium opportunistum (16972877)