User:Jipark97/sandbox

Original - "Shewanella"

Shewanella is the sole genus included in the Shewanellaceae family of marine bacteria, some species within it were formerly classed as Alteromonas. Shewanella bacteria are a normal component of the surface flora of fish and are implicated in fish spoilage.

Shewanella oneidensis MR-1 is a widely used laboratory model to study anaerobic respiration of metals and other anaerobic extracellular electron acceptors, and for teaching about microbial electrogenesis and microbial fuel cells.

Diet
Shewanella species respire a variety of electrons acceptors in anoxic conditions, many of which are located extracellularly. The mechanism for extracellular electron transfer involves c-type cytochromes that span the inner and outer membranes and "bacterial nanowires".

Edits - "Shewanella"

Shewanella is the sole genus included in the Shewanellaceae family of marine bacteria, some species within it were formerly classed as Alteromonas. Shewanella consists of facultatively anaerobic Gram-negative rods, most of which are found in extreme aquatic habitats where the temperature is very low and the pressure is very high. Shewanella bacteria are a normal component of the surface flora of fish and are implicated in fish spoilage.

Shewanella oneidensis MR-1 is a widely used laboratory model to study anaerobic respiration of metals and other anaerobic extracellular electron acceptors, and for teaching about microbial electrogenesis and microbial fuel cells.

Diet
Shewanella species respire a variety of electrons acceptors in anoxic conditions, many of which are located extracellularly. The mechanism for extracellular electron transfer involves c-type cytochromes that span the inner and outer membranes and "bacterial nanowires".

Significance
One of the roles that Shewanella genus has in the environment is bioremediation. Shewanella species have great metabolic versatility; they can reduce various electron acceptors. Some of the electron acceptors they use are toxic substances and heavy metals, which often become less toxic after being reduced. Examples of metals that Shewanella are capable of reducing and degrading include uranium, chromium, and iron. Its ability to decrease toxicity of various substances makes Shewanella a useful tool for bioremediation. Specifically, Shewanella oneidensis strain MR-1 is often used to clean up contaminated nuclear weapon manufacturing sites.

Shewanella also contributes to the biogeochemical circulation of minerals. Members of this genus are widely distributed in aquatic habitats, from the deep sea to the shallow Antarctic Ocean. Its diverse habitats, coupled to its ability to reduce a variety of metals, makes the genus critical for the cycling of minerals. For instance, under aerobic conditions, various species of Shewanella are capable of oxidizing manganese. When conditions are changed, the same species can reduce the manganese oxide products. Hence, since Shewanella can both oxidize and reduce manganese, it is critical to the cycling of manganese.

--Jipark97 (talk) 07:30, 20 November 2017 (UTC)