Caulobacterales

Caulobacter is a genus of Gram-negative bacteria in the class Alphaproteobacteria. Its best-known member is Caulobacter crescentus, an organism ubiquitous in freshwater lakes and rivers; many members of the genus are specialized to oligotrophic environments.

Caulobacteraceae is a family of Pseudomonadota within the alpha subgroup. Like all Pseudomonadota, the Caulobacteraceae are gram-negative. Caulobacteraceae includes the genera Asticcacaulis, Brevundimonas, Phenylobacterium and Caulobacter.

species of bacterium

Brevundimonas is a genus of bacteria. They are Gram-negative, non-fermenting, aerobic bacilli. Brevundimonas species are ubiquitous in the environment but are rarely isolated from clinical samples, although numbers are increasing. Two species of Brevundimonas originally classified under the genus Pseudomonas have been re-classified by Seger et al. as Brevundimonas vesicularis and Brevundimonas diminuta.

Caulobacterales is an order of gram-negative Pseudomonadota within the alpha subgroup.