''Edwardsiella'' is a genus of

gram-negative Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wa ...

, fermentative bacteria of the family Hafniaceae. It was first discovered in snakes in 1962.

Description

A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria of the family Hafniaceae, they are occasionally opportunistic pathogens of humans.

Species

Notable species include: * ''Edwardsiella hoshinae'', a motile species that, isolated from animals and humans, does not produce

indole Indole is an aromatic heterocyclic organic compound In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other c ...

. * ''Edwardsiella ictaluri'', a nonmotile species that does not produce indole, and occurs as a pathogen of

catfish Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive ...

. * ''Edwardsiella tarda'', also known as ''Edwardsiella anguillimortifera'', a species which produces indole, is biochemically similar to ''

Escherichia coli ''Escherichia coli'' (),Wells, J. C. (2000) Longman Pronunciation Dictionary. Harlow ngland Pearson Education Ltd. also known as ''E. coli'' (), is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus '' Esc ...

''. It is usually found in aquatic animals and reptiles, and is found in the intestinal tract of snakes and seals. It is occasionally isolated from the urine, blood, and faeces of humans, and has been known to cause gastroenteritis and wound infections. In India, it has been found in children with diarrhoea.

References

Enterobacterales Bacteria genera {{Enterobacterales-stub