Pseudomonadati

Pseudomonadati
Escherichia coli cells magnified 25,000 times
Scientific classification
Domain: Bacteria
Kingdom: Pseudomonadati
(Gibbons & Murray 1978) Oren & Göker 2024
Phyla
Synonyms
  • "Hydrobacteria" Battistuzzi & Hedges, 2009

Pseudomonadati is a kingdom containing approximately one-third of prokaryote species, mostly gram-negative bacteria and their relatives. It is the closest relative of an even larger kingdom of Bacteria, the Bacillati, which are mostly gram-positive bacteria.