Paenirhodobacter

Paenirhodobacter is a genus of bacteria in the family Rhodobacteraceae. The genus was first described in 2013, and currently includes two species: Paenirhodobacter enshiensis and Paenirhodobacter spartinae.

Taxonomy

The genus Paenirhodobacter belongs to the family Rhodobacteraceae, in the order Rhodobacterales, of the class Alphaproteobacteria. The genus was first proposed by Zhang et al. in 2013, following the reclassification of the species Rhodobacter enshiensis as Paenirhodobacter enshiensis.

Species

Currently, the genus Paenirhodobacter includes two recognized species:

• Paenirhodobacter enshiensis - The type species of the genus, it was originally isolated from a hot spring in the Enshi Tujia and Miao Autonomous Prefecture, Hubei province, China.

• Paenirhodobacter spartinae - This species was first isolated from the rhizosphere of the salt marsh plant Spartina alterniflora, in the United States.

Characteristics

Paenirhodobacter species are Gram-negative, rod-shaped, and non-spore-forming. They are also facultatively anaerobic, meaning they can grow in both the presence and absence of oxygen.

Ecology

Paenirhodobacter species have been isolated from various environments, including hot springs and plant rhizospheres. They are thought to play a role in the nitrogen cycle, as they have the ability to fix atmospheric nitrogen.