Gammaproteobacteria is a class of bacteria in the phylum Pseudomonadota. It contains about 250 genera, which makes it the most genus-rich taxon of the Prokaryotes. Several medically, ecologically, and

Pseudomonadota is a major phylum of gram-negative bacteria. They include both pathogenic and free-living genera. The phylum comprises six classes: Acidithiobacillia, Alphaproteobacteria, Betaproteobac