Electron Uptake by Iron-Oxidizing Phototrophic Bacteria

DSpace/Manakin Repository

Electron Uptake by Iron-Oxidizing Phototrophic Bacteria

Citable link to this page


Title: Electron Uptake by Iron-Oxidizing Phototrophic Bacteria
Author: Bose, Arpita; Gardel, Emily Jeanette; Vidoudez, Charles; Parra, Erika; Girguis, Peter R.

Note: Order does not necessarily reflect citation order of authors.

Citation: Bose, A., E.J. Gardel, C. Vidoudez, E.A. Parra, and P.R. Girguis. 2014. Electron Uptake by Iron-Oxidizing Phototrophic Bacteria. Nature Communications 5 (February 26): 3391.
Full Text & Related Files:
Abstract: Oxidation–reduction reactions underlie energy generation in nearly all life forms. Although most organisms use soluble oxidants and reductants, some microbes can access solid-phase materials as electron-acceptors or -donors via extracellular electron transfer. Many studies have focused on the reduction of solid-phase oxidants. Far less is known about electron uptake via microbial extracellular electron transfer, and almost nothing is known about the associated mechanisms. Here we show that the iron-oxidizing photoautotroph Rhodopseudomonas palustris TIE-1 accepts electrons from a poised electrode, with carbon dioxide as the sole carbon source/electron acceptor. Both electron uptake and ruBisCo form I expression are stimulated by light. Electron uptake also occurs in the dark, uncoupled from photosynthesis. Notably, the pioABC operon, which encodes a protein system essential for photoautotrophic growth by ferrous iron oxidation, influences electron uptake. These data reveal a previously unknown metabolic versatility of photoferrotrophs to use extracellular electron transfer for electron uptake.
Published Version: doi:10.1038/ncomms4391
Other Sources: http://www.researchgate.net/profile/Charles_Vidoudez/publication/260382113_Electron_uptake_by_iron-oxidizing_phototrophic_bacteria/links/0deec5332d8a6bc298000000
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:12872199
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)


Search DASH

Advanced Search