Eubacterium is a genus of Gram-positive bacteria in the family Eubacteriaceae. These bacteria are characterised by a rigid cell wall. They may either be motile or nonmotile. If motile, they have a flagellum. A typical flagellum consists of a basal body, filament, and hook. The long filament is the organ which helps eubacteria move.
Citrobacter is a genus of Gram-negative coliform bacteria in the Enterobacteriaceae family.
Desulfovibrio is a genus of Gram-negative sulfate-reducing bacteria. Desulfovibrio species are commonly found in aquatic environments with high levels of organic material, as well as in water-logged soils, and form major community members of extreme oligotrophic habitats such as deep granitic fractured rock aquifers.
Orientia is a genus of bacteria in family Rickettsiaceae. They are obligate intracellular, Gram-negative bacteria found in insects and mammals. They are spread through the bites or feces of infected insects.
Flavobacterium is a genus of gram-negative, nonmotile and motile, rod-shaped bacteria that consists of 130 recognized species. Flavobacteria are found in soil and fresh water in a variety of environments. Several species are known to cause disease in freshwater fish.
Comamonas is a genus of Proteobacteria . Like all Proteobacteria, they are Gram-negative bacteria. Comamonas species are aerobic organisms and motile using bipolar or polar tufts of one to five flagella.
Devosia is a genus of Gram-negative soil bacteria. It is named after the Belgian microbiologist Paul De Vos. They are motile by flagella, the cells are rod-shaped.
Coxiella refers to a genus of Gram-negative bacteria in the family Coxiellaceae. It is named after Herald Rea Cox (1907–1986), an American bacteriologist. It is one of the Gammaproteobacteria.
Ochrobactrum is a genus of Gram-negative bacteria in the Brucellaceae. The genus has been described by Holmes in 1988 and Ochrobactrum anthropi was proposed as the type species of the genus. Further work led to the recognition of 18 other species:
Yokenella is a genus of bacteria of the family Enterobacteriaceae. Yokenella are Gram-negative, motile, rod-shaped bacteria. Strains of bacteria forming this genus were originally isolated from clinical samples and from insects. There is only one species in this genus: Yokenella regensburgei.
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.
Thermothrix is a genus of Gram-negative, non-spore-forming, thermophilic, motile bacteria with a single polar flagellum of the family Burkholderiaceae and class Betaproteobacteria.
Pusillimonas is a genus of Gram-negative oxidase-positive bacteria of the family Alcaligenaceae.
Azonexus is a genus of gram-negative, non-spore-forming, highly motile bacteria that is the type genus of the family Azonexaceae which is in the order Rhodocyclales of the class Betaproteobacteria.
Ferribacterium limneticum is a gram negative, obligately anaerobe, Fe(III)-reducing, motil bacterium from the genus of Azonexus which was isolated from mining impacted lake sediments.
Propionivibrio is a genus of gram-negative, chemoorganotrophic, non-spore-forming bacteria from the family of Rhodocyclaceae which belongs to the class of Betaproteobacteria.
Rhodocyclus is a genus of gram-negative bacteria from the family of Rhodocyclaceae which belongs to the class of Betaproteobacteria.
Gemmiger is a genus of Gram-negative bacteria from the family of Hyphomicrobiaceae.
Nocardioidaceae is a family of Gram-positive bacteria within the order Actinomycetales, sub-order Propionibacterineae.
Idiomarinaceae is a Gram-negative and mesophilic family in the order of Alteromonadales. Bacteria of the family Idiomarinaceae occur in saline environments.
