Acinetobacter albensis[1]
Acinetobacter apis
Acinetobacter baumannii
Acinetobacter baylyi[1]
Acinetobacter beijerinckii
Acinetobacter bereziniae
Acinetobacter bohemicus
Acinetobacter boissieri
Acinetobacter bouvetii
Acinetobacter brisouii
Acinetobacter calcoaceticus
Acinetobacter celticus[1]
Acinetobacter chengduensis[1]
Acinetobacter colistiniresistens[1]
Acinetobacter courvalinii[1]
Acinetobacter cumulans[1]
Acinetobacter defluvii[1]
Acinetobacter dispersus[1]
Acinetobacter dijkshoorniae[1]
Acinetobacter equi[1]
Acinetobacter gandensis
Acinetobacter gerneri
Acinetobacter guangdongensis
Acinetobacter guerrae
Acinetobacter guillouiae
Acinetobacter gyllenbergii
Acinetobacter haemolyticus
Acinetobacter harbinensis
Acinetobacter indicus
Acinetobacter junii
Acinetobacter kookii
Acinetobacter lactucae[1]
Acinetobacter lanii[1]
Acinetobacter larvae[1]
Acinetobacter lwoffii
Acinetobacter modestus[1]
Acinetobacter nectaris
Acinetobacter nosocomialis
Acinetobacter oryzae[6]
Acinetobacter parvus
Acinetobacter pakistanensis
Acinetobacter populi[1]
Acinetobacter portensis
Acinetobacter proteolyticus[1]
Acinetobacter pittii
Acinetobacter piscicola[1]
Acinetobacter pragensis[1]
Acinetobacter proteolyticus[1]
Acinetobacter pseudolwoffii[1]
Acinetobacter pullicarnis[1]
Acinetobacter pullorum[1]
Acinetobacter puyangensis
Acinetobacter qingfengensis
Acinetobacter radioresistens
Acinetobacter rudis
Acinetobacter schindleri
Acinetobacter seifertii
Acinetobacter shaoyimingii[1]
Acinetobacter soli
Acinetobacter stercoris[1]
Acinetobacter tandoii
Acinetobacter tjernbergiae
Acinetobacter towneri
Acinetobacter ursingii
Acinetobacter variabilis
Acinetobacter venetianus
Acinetobacter vivianii[1]
Acinetobacter wanghuae[1]
Acinetobacter wuhouensis[1]
Acinetobacter is a genus of gram-negative bacteria belonging to the wider class of Gammaproteobacteria. Acinetobacter species are oxidase-negative, exhibit twitching motility,[7] and occur in pairs under magnification.
They are important soil organisms, where they contribute to the mineralization of, for example, aromatic compounds. Acinetobacter species are a key source of infection in debilitated patients in the hospital, in particular the species Acinetobacter baumannii.
Species of the genus Acinetobacter are strictly aerobic, nonfermentative, Gram-negative bacilli. They show mostly a coccobacillary morphology on nonselective agar. Rods predominate in fluid media, especially during early growth.
The morphology of Acinetobacter species can be quite variable in Gram-stained human clinical specimens, and cannot be used to differentiate Acinetobacter from other common causes of infection.
Most strains of Acinetobacter, except some of the A. lwoffii strain, grow well on MacConkey agar (without salt). Although officially classified as not lactose-fermenting, they are often partially lactose-fermenting when grown on MacConkey agar. They are oxidase-negative, catalase-positive, indole-negative, nonmotile, and usually nitrate-negative.