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Shewanella putrefaciens

RANK: Species

TAXONOMY: Bacteria -> Proteobacteria -> Gammaproteobacteria -> Alteromonadales -> Shewanellaceae -> Shewanella -> Shewanella putrefaciens

OVERVIEW:

Shewanella putrefaciens is a Gram-negative pleomorphic bacterium. It has been isolated from marine environments, as well as from anaerobic sandstone in the Morrison formation in New Mexico. S. putrefaciens is also a facultative anaerobe with the ability to reduce iron and manganese metabolically; that is, it can use iron and manganese as the terminal electron acceptor in the electron transport chain (in contrast to obligate aerobes which must use oxygen for this purpose). It is also one of the organisms associated with the odor of rotting fish, as it is a marine organism which produces trimethylamine (hence the species name putrefaciens, from putrid).In both solid and liquid media, S. putrefaciens is often recognizable by its bright pink color. On solid media, the colonies are round, fast-growing, and pink. The organism is also fast-growing in liquid media, and there will give the liquid an overall pink hue. On blood agar plates, the colonies are typically convex and large, with a brown pigment, and cause “greening” of the agar around the colonies. S. putrefaciens are non-lactose fermenters on MacConkey agar. As with all Shewanella, this organism produces hydrogen sulfide on TSI.Although it is very rare for it to act as a human pathogen, there have been cases of infections and bacteremia caused by S. putrefaciens.S. putrefaciens is one of several species that have been shown to derive energy by reducing U(VI) to U(IV), which is thought to be important in making Uranium deposits. In fact, strain CN32 is very metabolically versatile and is capable of reducing metals, metalloids, and even radionuclides in place of oxygen during anaerobic growth. This is known to include (but is not necessarily limited to) Fe(III)->Fe(II), Mn(IV)->(via Mn(III) intermediate)->Mn(II), V(V)->V(IV), Tc(VII)->Tc(V/IV) and U(VI)->U(IV). The growth of Pseudomonas sp. strains cocultured with either B. thermosphacta or S. putrefaciens strains resulted in different effects: a promoting one for the first and an inhibitory one for the second. Moreover, the production of formic acid and two unidentified organic acids (peaks a and b) was characteristic in all cases in which S. putrefaciens was cultured.[PMC: 309904]

2

COGEM
COGEM released a comprehensive database of pathogenicity assessment of around 2575 bacterial species in 2011. The database ranks the pathogenicity of species on a scale of 1 to 4. Shewanella putrefaciens ranks 2 on this scale: Species that can cause diseases in humans or animals, which are unlikely to spread in the human population and for which an adequate prophylaxis or therapy exists


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Keystone
Core species
Type species
Pathogen
Dysbiosis associated
Flora/ commensal
Gut associated
Probiotic
Leanness
Obesity
Skin microbiome
Fecal distribution
Oral microbiome
Vaginal microbiome
Butyrate producer
Catalase producer
Histamine producer
Food fermenter
Amylolytic
Propionate producer
Nitrifying
Biofilm producer
INTERACTIONS
KEGG PATHWAYS

CLUSTERS WITH
METABOLOMICS       
NUTRIENTS/ SUBSTRATES

ENDPRODUCTS
  • Trimethylamine
  • Formic acid
  • ANTIBIOTIC RESISTANCE   BIOFILM FORMERS   COGEM PATHOGENICITY   

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