Related how?

Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Negibacteria (Rjheekñndd)
Proteobacteria (Purple bacteria & relatives)
Alphaproteobacteria

Rhodobacterales (1725165)

Children (2 direct children, 932 direct and indirect children):

Rhodobacteraceae (tree size 858)

Hyphomonadaceae (tree size 72)