...Victoria S. Coker; Anthony M.T. Bell; Carolyn I. Pearce; Richard A.D. Pattrick; Gerrit van der Laan; Jonathan R. Lloyd Abstract The Fe(III)-reducing bacterium Geobacter sulfurreducens produces nanometer-sized magnetite by transferring electrons from organic matter or hydrogen to ferrihydrite...

... of Geobacter sulfurreducens and the bioprecipitated uranium phases. Our results reveal the association between nutrient uptake and precipitation of uranium minerals. Biosequestration of uranium is enhanced by addition of nutrients such as acetic acid, and uranium is precipitated on the surface of the bacteria...

... fermentans , in common with other key Fe(III)-reducing bacteria such as Geobacter sulfurreducens , does not reduce As(V) enzymatically, but can capture arsenic in Fe(II) minerals formed during respiration using Fe(III) as an electron acceptor. Thus, the reduction of arsenic-bearing Fe(III) oxide minerals...

... Geobacter sulfurreducens . With increasing vanadium in the ferrihydrite, the amount of V-doped magnetite produced decreased due to V-toxicity which interrupted the reduction pathway ferrihydrite–magnetite, resulting in siderite or goethite formation. Fe L 2,3 and V L 2,3 X-ray absorption spectra and data...

... are often expensive to synthesize. In this study, the Fe 3+ -reducing bacteria Geobacter sulfurreducens and Shewanella oneidensis were used to synthesize spinel ferrite nanoparticles of the general chemical formula M x Fe 3– x O 4 , where M is either Co, Ni, Mn, Zn, or a combination of Mn and Zn...

...Fig. 3. Transmission electron microscope (TEM) images of biogenic magnetite samples, A, Magnetospirillum gryphiswaldense , B, Geobacter sulfurreducens , C, Shewanella oneidensis , D, Geothrix fermentans . ...

...Figure 2. ( A ) Scanning electron microscopy micrograph indicating magnetite associated with Geobacter sulfurreducens cells (arrows). ( B ) Transmission electron microscopy (TEM) micrograph of magnetite nanoparticles from Geobacter sulfurreducens. ( C ) Transmission electron microscopy...

..., Geobacter sulfurreducens , and ( D ) biogenic magnetite nanoparticles functionalized with nanoparticulate palladium. ( A ) and ( B ) are adapted with permission from F dez -G ubieda et al . (2020) and AIP P ublishing . ( C ) and ( D ) P hotos : R ichard K imber . ...

... in Geobacter sulfurreducens . Appl Environ Microbiol 70 : 5183 – 5189 Coates JD , Cole KA , Chakraborty R , O’Connor SM , Achenbach LA ( 2002 ) Diversity and ubiquity of bacteria capable of utilizing humic substances as electron donors for anaerobic respiration . Appl...

... of this study, metabolic reconstruction and all references associated with the publication of the genome can be found in ( Nelson et al. 2002 ). Analysis of the Geobacter sulfurreducens genome ( Methé et al. 2003 ), a bacterium known primarily for its ability to carry out extensive metal reduction...

... Geobacter sulfurreducens and arsenate, and capture of the metalloid by biogenic Fe(II) . Applied and Environmental Microbiology , 71 , 8642 – 8648 . Islam , F.S. , Lawson , M. , Pythgoe , P.R. , Wogelius , R.A. , Thinnapanni , V. , Lloyd , J.R. , Charnock , J.M...

...) in magnetite and uses the electrons for CO 2 fixation by photosynthesis under anoxic conditions in the light, whereas under anoxic conditions in the dark, Geobacter sulfurreducens can reduce the Fe(III) in magnetite and thus recharge the biogeobattery again for the next daylight period ( Dong et al. 2020...

..., and is affected by the degree of mineral crystallinity as well as molecular structure. For example the bioreduction of amorphous iron oxyhydroxide minerals such as ferrihydrite, lepidocrocite and akaganéite by Geobacter sulfurreducens is generally more rapid and extensive than that of relatively more...

... biology grade water) for the PCR reaction, samples 1, 2 and 3 at T 0 , samples 1, 2 and 3 at T 30 and, finally, a positive control for the PCR reaction (containing DNA extracted from Geobacter sulfurreducens, Methanohalophilus halophilus and Handkea fumosa as representatives of bacteria, archaea...