Iron oxidizing bacteria: insights on diversity, mechanism of iron oxidation and role in management of metal pollution

Singh, Vipin Kumar; Singh, Asha; Singh, Raghuvir; Kumar, Ajay

doi:10.1007/s42398-018-0024-0

Cited by 58 publications

(13 citation statements)

References 82 publications

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“…Secondly, the exceptionally high expression of cytochrome oxidases genes might be linked to iron oxidation. However, the diversity of iron oxidation (FeOx) pathways and the divergence of the genes involved in iron oxidation [ 64 , 76 , 77 ] pose major challenges when assessing MAGs [ 78 ].…”

Section: Discussionmentioning

confidence: 99%

Niche differentiation of sulfur-oxidizing bacteria (SUP05) in submarine hydrothermal plumes

et al. 2022

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Hydrothermal plumes transport reduced chemical species and metals into the open ocean. Despite their considerable spatial scale and impact on biogeochemical cycles, niche differentiation of abundant microbial clades is poorly understood. Here, we analyzed the microbial ecology of two bathy- (Brothers volcano; BrV-cone and northwest caldera; NWC) and a mesopelagic (Macauley volcano; McV) plumes on the Kermadec intra-oceanic arc in the South Pacific Ocean. The microbial community structure, determined by a combination of 16S rRNA gene, fluorescence in situ hybridization and metagenome analysis, was similar to the communities observed in other sulfur-rich plumes. This includes a dominance of the vent characteristic SUP05 clade (up to 22% in McV and 51% in BrV). In each of the three plumes analyzed, the community was dominated by a different yet uncultivated chemoautotrophic SUP05 species, here, provisionally named, Candidatus Thioglobus vadi (McV), Candidatus Thioglobus vulcanius (BrV-cone) and Candidatus Thioglobus plumae (BrV-NWC). Statistical analyses, genomic potential and mRNA expression profiles suggested a SUP05 niche partitioning based on sulfide and iron concentration as well as water depth. A fourth SUP05 species was present at low frequency throughout investigated plume samples and may be capable of heterotrophic or mixotrophic growth. Taken together, we propose that small variations in environmental parameters and depth drive SUP05 niche partitioning in hydrothermal plumes.

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Section: Discussionmentioning

confidence: 99%

Niche differentiation of sulfur-oxidizing bacteria (SUP05) in submarine hydrothermal plumes

et al. 2022

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“…This phenomenon is broadly known as extracellular electron transfer (EET). EET has been implicated as a major agent of environmental change, including the oxidation of methane (a potent greenhouse gas [ 2 – 5 ]), the rise of oxygen on early Earth ( 6 – 9 ), and the remediation of materials considered toxic to most other forms of life ( 10 – 13 ). EET can occur in both the reductive or oxidative direction depending on the microorganism and source of electrons.…”

Section: Introductionmentioning

confidence: 99%

Evidence for Horizontal and Vertical Transmission of Mtr-Mediated Extracellular Electron Transfer among the Bacteria

Baker

Conley

Gralnick

et al. 2022

mBio

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While many metabolisms make use of soluble, cell-permeable substrates like oxygen or hydrogen, there are other substrates, like iron or manganese, that cannot be brought into the cell. Some bacteria and archaea have evolved the means to directly “plug in” to such environmental electron reservoirs in a process known as extracellular electron transfer (EET), making them powerful agents of biogeochemical change and promising vehicles for bioremediation and alternative energy.

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“…Indeed, several studies demonstrate the ability of iron-oxidizing bacteria and sulphate-reducing bacteria (SRBs) to corrode metal including carbon steel (Pedersen et al, 2017;Svensson et al, 2011). There are several ironinteracting bacteria that either oxidise elemental iron or Fe (II) to Fe (III) (Singh et al, 2018;Konhauser, 2007) or reduce Fe (III) to Fe (II) (Morgado et al, 2012;Fan et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Survival and activity of an indigenous iron-reducing microbial community from MX80 bentonite in high temperature / low water environments with relevance to a proposed method of nuclear waste disposal

Gilmour

Davie

Gray

2022

Science of The Total Environment

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Iron oxidizing bacteria: insights on diversity, mechanism of iron oxidation and role in management of metal pollution

Cited by 58 publications

References 82 publications

Niche differentiation of sulfur-oxidizing bacteria (SUP05) in submarine hydrothermal plumes

Niche differentiation of sulfur-oxidizing bacteria (SUP05) in submarine hydrothermal plumes

Evidence for Horizontal and Vertical Transmission of Mtr-Mediated Extracellular Electron Transfer among the Bacteria

Survival and activity of an indigenous iron-reducing microbial community from MX80 bentonite in high temperature / low water environments with relevance to a proposed method of nuclear waste disposal

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