Link between capacity for current production and syntrophic growth in Geobacter species

Frontiers in Microbiology
Amelia-Elena RotaruDerek R Lovley

Abstract

Electrodes are unnatural electron acceptors, and it is yet unknown how some Geobacter species evolved to use electrodes as terminal electron acceptors. Analysis of different Geobacter species revealed that they varied in their capacity for current production. Geobacter metallireducens and G. hydrogenophilus generated high current densities (ca. 0.2 mA/cm(2)), comparable to G. sulfurreducens. G. bremensis, G. chapellei, G. humireducens, and G. uraniireducens, produced much lower currents (ca. 0.05 mA/cm(2)) and G. bemidjiensis was previously found to not produce current. There was no correspondence between the effectiveness of current generation and Fe(III) oxide reduction rates. Some high-current-density strains (G. metallireducens and G. hydrogenophilus) reduced Fe(III)-oxides as fast as some low-current-density strains (G. bremensis, G. humireducens, and G. uraniireducens) whereas other low-current-density strains (G. bemidjiensis and G. chapellei) reduced Fe(III) oxide as slowly as G. sulfurreducens, a high-current-density strain. However, there was a correspondence between the ability to produce higher currents and the ability to grow syntrophically. G. hydrogenophilus was found to grow in co-culture with Methanosarcina bar...Continue Reading

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Citations

Jul 6, 2016·Frontiers in Microbiology·Martina PraveckovaPierre Rossi
Jun 28, 2016·Bioresource Technology·Elizabeth S HeidrichJan Dolfing
Jul 28, 2016·Bioelectrochemistry·Bradley G LuskCesar I Torres
Aug 11, 2016·Microbial Biotechnology·Ian M Head, Neil D Gray
May 18, 2017·Nature Communications·Michael J McAnultyThomas K Wood
Jan 15, 2017·Applied and Environmental Microbiology·Anna ProkhorovaJohannes Gescher
Sep 6, 2017·The ISME Journal·David Jf WalkerDerek R Lovley
Jan 14, 2020·Nanotechnology·Mon Oo YeeAmelia-Elena Rotaru
Aug 31, 2020·World Journal of Microbiology & Biotechnology·Yun XiangXing Huang
Jul 13, 2017·Annual Review of Microbiology·Derek R Lovley
Aug 5, 2017·Microbial Biotechnology·Angela SherryIan M Head
Dec 13, 2018·Frontiers in Microbiology·Lingyan HuangShungui Zhou
Oct 15, 2019·Frontiers in Microbiology·Derek R Lovley, David J F Walker
Jan 17, 2020·Scientific Reports·Mon Oo Yee, Amelia-Elena Rotaru
Feb 6, 2017·Archaea : an International Microbiological Journal·Peer H A TimmersAlfons J M Stams
Mar 24, 2018·Frontiers in Microbiology·Sara Tejedor-SanzAbraham Esteve-Núñez
Aug 25, 2019·The ISME Journal·Paola Andrea PalaciosAmelia-Elena Rotaru
Dec 12, 2020·Biotechnology and Bioengineering·Aaron LeiningerBirthe Kjellerup
Feb 5, 2021·Current Opinion in Biotechnology·Amelia-Elena RotaruFlorin Musat
Mar 21, 2021·Applied and Environmental Microbiology·Toshiyuki Ueki
Jun 25, 2021·Environmental Science and Pollution Research International·Priya MukherjeeMin Jang
Aug 9, 2021·Biotechnology Advances·Dong FengJerry D Murphy

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