Electrotroph
An electrotroph is a microorganism which can receive electrons necessary for its growth from an electrode (power supply) terminal.
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Blacksmoker thermal vent
The chemolithoautotrophic bacterium Acidithiobacillus ferrooxidans, that lives in ocean thermal vents, has been shown to exhibit electrotrophic behavior in experiments.[1] In particular, it switches the electron source for carbon assimilation from diffusible Fe2+
ions to an electrode under the condition that electrical current is the only source of energy and electrons.[2]
References
- Chemolithoautotrophic Bacteria: Biochemistry and environmental biology, by Tateo Yamanaka, 2008, Springer: section 5.1.3 (p.100) "Various Growth Aspects of Acidithiobacillus Ferrooxidans"
- Ishii, Takumi; Kawaichi, Satoshi; Nakagawa, Hirotaka; Hashimoto, Kazuhito; Nakamura, Ryuhei (2015). "From chemolithoautotrophs to electrolithoautotrophs: CO2 fixation by Fe(II)-oxidizing bacteria coupled with direct uptake of electrons from solid electron sources". Frontiers in Microbiology. 6: 994. doi:10.3389/fmicb.2015.00994. PMC 4593280. PMID 26500609.
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