Armatimonadota is a phylum of gram-negative bacteria.
The species of the genus Aquabacterium are motile, rod-shaped, Gram-negative, oxidase-positive, catalase-negative bacteria which were isolated from drinking water biofilms in Berlin. Identified species include Aquabacterium citratiphilum, Aquabacterium parvum, and Aquabacterium commune. Three bacterial strains isolated from biofilms of the Berlin drinking water system were characterized with respect to their morphological and physiological properties and their taxonomic position. Phenotypically, the bacteria investigated were motile, Gram-negative rods, oxidase-positive and catalase-negative, and contained polyalkanoates and polyphosphate as storage polymers. They displayed a microaerophilic growth behaviour and used oxygen and nitrate as electron acceptors, but not nitrite, chlorate, sulfate, or ferric iron. The substrates metabolized included a broad range of organic acids, but no carbohydrates at all. The three species can be distinguished from each other by their substrate use, ability to hydrolyse urea and casein, cellular protein patterns, and growth on nutrient-rich media, as well as their temperature, pH, and NaCl tolerances. Phylogenetic analysis, based on 16S rRNA gene sequence comparison, revealed that the isolates are affiliated to the beta 1-subclass of Proteobacteria. The isolates constitute three new species with internal levels of DNA relatedness ranging from 44.9 to 51.3%. It is proposed that a new genus, Aquabacterium gen. nov., should be created, including Aquabacterium citratiphilum sp. nov., Aquabacterium parvum sp. nov., and Aquabacterium commune sp. nov. The type species of the new genus is Aquabacterium commune.
Aquabacterium fontiphilum is a Gram-negative non-spore-forming, motile bacterium of the genus Aquabacterium in the family Comamonadaceae, which was isolated from a water sample from the Nature Valley in Hsinchu County in Taiwan. Aquabacterium fontiphilum has a single polar flagellum and its colonies are semitransparent.
Aquabacterium hongkongensis is a bacterium of the genus Aquabacterium, in the family Comamonadaceae.
Delftia litopenaei is a Gram-negative, short-rod-shaped, non-spore-forming, motile bacterium from the Comamonadaceae family, which was isolated from a freshwater shrimp culture pond in Taiwan. It has the ability to accumulate poly-β-hydroxybutyrate.
Labrys methylaminiphilus is a Gram-negative and non-motile bacteria from the family Xanthobacteraceae which has been isolated from sediments of a lake in Seattle, Washington, United States.
Methylobacterium gregans is a Gram-negative, strictly aerobic, facultatively methylotrophic and non-spore-forming bacteria from the genus of Methylobacterium which has been isolated from water samples from food factories in Japan.
Chryseobacterium daecheongense is a Gram-negative, non-spore-forming and non-motile bacteria from the genus Chryseobacterium which has been isolated from freshwater lake sediments.
Chryseobacterium piperi is a Gram-negative, rod-shaped and non-motile bacteria from the genus Chryseobacterium which has been isolated from the Loyalsock Creek in Montoursville in the United States.
Aquabacterium olei is a Gram-negative, non-spore-forming and motile bacterium of the genus Aquabacterium which has been isolated from oil-contaminated soil in Korea. Aquabacterium olei can degrade oil.
Blastomonas is a Gram-negative, photoheterotrophic, strictly aerobic and non-spore-forming bacteria genus from the family of Sphingomonadaceae.
Flavobacterium dispersum is a Gram-negative, strictly aerobic and motile bacterium from the genus of Flavobacterium which has been isolated from a freshwater spring in Taiwan.
Gemmobacter fontiphilus is a Gram-negative, rod-shaped, non-spore-forming, facultatively anaerobic and non-motile bacterium from the genus of Gemmobacter which has been isolated from a freshwater spring from Taiwan.
Jannaschia confluentis is a Gram-negative, aerobic, and non-motile bacterium from the genus of Jannaschia which has been isolated from the Jeju Island in Korea.
Aurantiacibacter aquimixticola is a Gram-negative, aerobic, rod-shaped and non-motile bacteria from the genus Aurantiacibacter which has been isolated from water from the Jeju island in Korea.
Rhodoluna is a Gram-positive, non-spore-forming and non-motile genus of bacteria from the family of Microbacteriaceae. The type strain of the only species Rhodoluna lacicola encodes an actinorhodopsin, which is a light-diven proton pump enabling light energy conversion, potentially resulting in a mixotrophic physiology. The type strain of R. lacicola was isolated from Lake Tai in China. The type strain MWH-Ta8 is remarkable for its very small cell size ultramicrobacterium and its small genome size of only 1.4 Mbp. The type strain has a planktonic lifestyle, that is freely floating the water column of aquatic systems. Currently, the genus Rhodoluna contains two described species.
Puniceibacterium confluentis is a Gram-negative, aerobic and non-motile bacterium from the genus of Puniceibacterium which has been isolated from water near the Jeju island in Korea.
Pontixanthobacter aquaemixtae is a Gram-negative, aerobic and non-motile bacterium from the genus Pontixanthobacter.
Terrimonas aquatica is a Gram-negative, rod-shaped, aerobic and non-motile bacterium from the genus of Terrimonas which has been isolated from a freshwater spring from Taiwan.
Pseudaeromonas sharmana is a Gram-negative and facultatively anaerobic bacterium from the genus of Pseudaeromonas which has been isolated from warm spring water from Jorhat, India.
