Magnetite formation from ferrihydrite by hyperthermophilic archaea from <scp>E</scp>ndeavour <scp>S</scp>egment, <scp>J</scp>uan de <scp>F</scp>uca <scp>R</scp>idge hydrothermal vent chimneys

Lin, T. Jennifer; Breves, E. A.; Dyar, M. D.; Eecke, H. C. Ver; Jamieson, John; Holden, James F.

doi:10.1111/gbi.12083

Cited by 14 publications

(15 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pyrodictium delaneyi Su06 T (DSM 28599) and Pyrobaculum islandicum GEO3 T (DSM 4184) were provided by the Deutsche Sammlung von Mikroorganismen und Zellkulturen. P. delaneyi is a marine hyperthermophile isolated from a hydrothermal “black smoker” chimney ( Lin et al, 2014 , 2016a ). P. islandicum is a terrestrial hyperthermophile isolated from a solfataric geothermal pool ( Huber et al, 1987 ).…”

Section: Methodsmentioning

confidence: 99%

“…Pyrodictium delaneyi was grown in modified DSM 1210 medium as previously described ( Lin et al, 2014 ). The headspace was flushed and pressurized with 200 kPa of H 2 -CO 2 (80–20%), which also served as the primary carbon and energy sources.…”

Section: Methodsmentioning

confidence: 99%

“…While ferrihydrite is the predominant form of iron in anaerobic non-sulfidogenic environments ( Lovley, 1991 ), other more crystalline Fe(III) (oxyhydr)oxides can be more abundant in other environments such as soils, shallow aquifers, sediments, and the subsurface ( Cornell and Schwertmann, 2003 ). More recently, a range of Fe(III) (oxyhydr)oxides has been identified in geothermal environments, including sulfide chimneys and microbial mats at various deep-sea hydrothermal vents ( Kristall et al, 2006 ; Toner et al, 2012 , 2016 ; Lin et al, 2014 , 2016b ), and acidic terrestrial hot springs ( Kozubal et al, 2012 ). In sulfide chimneys and seafloor sulfide deposits at hydrothermal vents, two-line ferrihydrite, six-line ferrihydrite, lepidocrocite, akaganéite, goethite, and a biogenic Fe(III) (oxyhydr)oxide have been identified ( Lin et al, 2016b ; Toner et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

“…Dissimilatory iron reduction is also catalyzed by hyperthermophilic archaea in geothermal environments such as hydrothermal vents and hot springs. For example, Pyrodictium delaneyi and Pyrobaculum islandicum reduce ferrihydrite to magnetite during growth ( Kashefi and Lovley, 2000 ; Kashefi et al, 2008 ; Lin et al, 2014 ). P. islandicum also has been shown to grow poorly on uncharacterized goethite and hematite ( Kashefi and Lovley, 2000 ).…”

Section: Introductionmentioning

confidence: 99%

“…P. islandicum also has been shown to grow poorly on uncharacterized goethite and hematite ( Kashefi and Lovley, 2000 ). P. delaneyi was unable to grow on macroparticulate lepidocrocite, hematite, maghemite, and goethite ( Lin et al, 2014 ). Except for ferrihydrite, “nanophase” (1–100 nm in at least one direction) Fe(III) (oxyhydr)oxides have not been tested for hyperthermophilic iron reduction.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Reduction and Morphological Transformation of Synthetic Nanophase Iron Oxide Minerals by Hyperthermophilic Archaea

et al. 2018

View full text Add to dashboard Cite

Fe(III) (oxyhydr)oxides are electron acceptors for some hyperthermophilic archaea in mildly reducing geothermal environments. However, the kinds of iron oxides that can be used, growth rates, extent of iron reduction, and the morphological changes that occur to minerals are poorly understood. The hyperthermophilic iron-reducing crenarchaea Pyrodictium delaneyi and Pyrobaculum islandicum were grown separately on six different synthetic nanophase Fe(III) (oxyhydr)oxides. For both organisms, growth on ferrihydrite produced the highest growth rates and the largest amounts of Fe(II), although P. delaneyi produced four times more Fe(II) (25 mM) than P. islandicum (6 mM). Both organisms grew on lepidocrocite and akaganéite and produced 2 and 3 mM Fe(II). Modest growth occurred for both organisms on goethite, hematite, and maghemite where ≤1 mM Fe(II) was produced. The diameters of the spherical mineral end-products following P. delaneyi growth increased by 30 nm for ferrihydrite and 50–150 nm for lepidocrocite relative to heated abiotic controls. For akaganéite, spherical particle sizes were the same for P. delaneyi-reacted samples and heated abiotic controls, but the spherical particles were more numerous in the P. delaneyi samples. For P. islandicum, there was no increase in grain size for the mineral end-products following growth on ferrihydrite, lepidocrocite, or akaganéite relative to the heated abiotic controls. High-resolution transmission electron microscopy of lattice fringes and selected-area electron diffraction of the minerals produced by both organisms when grown on ferrihydrite showed that magnetite and/or possibly maghemite were the end-products while the heated abiotic controls only contained ferrihydrite. These results expand the current view of bioavailable Fe(III) (oxyhydr)oxides for reduction by hyperthermophilic archaea when presented as synthetic nanophase minerals. They show that growth and reduction rates are inversely correlated with the iron (oxyhydr)oxide crystallinity and that iron (oxyhydr)oxide mineral transformation takes different forms for these two organisms.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reduction and Morphological Transformation of Synthetic Nanophase Iron Oxide Minerals by Hyperthermophilic Archaea

et al. 2018

View full text Add to dashboard Cite

show abstract

Desulfovulcanus ferrireducens gen. nov., sp. nov., a thermophilic autotrophic iron and sulfate-reducing bacterium from subseafloor basalt that grows on akaganéite and lepidocrocite minerals

et al. 2022

View full text Add to dashboard Cite

A deep-sea thermophilic bacterium, strain Ax17T, was isolated from 25 °C hydrothermal fluid at Axial Seamount. It was obligately anaerobic and autotrophic, oxidized molecular hydrogen and formate, and reduced synthetic nanophase Fe(III) (oxyhydr)oxide minerals, sulfate, sulfite, thiosulfate, and elemental sulfur for growth. It produced up to 20 mM Fe2+ when grown on ferrihydrite but < 5 mM Fe2+ when grown on akaganéite, lepidocrocite, hematite, and goethite. It was a straight to curved rod that grew at temperatures ranging from 35 to 70 °C (optimum 65 °C) and a minimum doubling time of 7.1 h, in the presence of 1.5–6% NaCl (optimum 3%) and pH 5–9 (optimum 8.0). Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain was 90–92% identical to other genera of the family Desulfonauticaceae in the phylum Pseudomonadota. The genome of Ax17T was sequenced, which yielded 2,585,834 bp and contained 2407 protein-coding sequences. Based on overall genome relatedness index analyses and its unique phenotypic characteristics, strain Ax17T is suggested to represent a novel genus and species, for which the name Desulfovulcanus ferrireducens is proposed. The type strain is Ax17T (= DSM 111878T = ATCC TSD-233T).

show abstract

Microorganisms from deep-sea hydrothermal vents

Zeng

Alain

Shao

2021

Mar Life Sci Technol

View full text Add to dashboard Cite

With a rich variety of chemical energy sources and steep physical and chemical gradients, hydrothermal vent systems offer a range of habitats to support microbial life. Cultivation-dependent and independent studies have led to an emerging view that diverse microorganisms in deep-sea hydrothermal vents live their chemolithoautotrophic, heterotrophic, or mixotrophic life with versatile metabolic strategies. Biogeochemical processes are mediated by microorganisms, and notably, processes involving or coupling the carbon, sulfur, hydrogen, nitrogen, and metal cycles in these unique ecosystems. Here, we review the taxonomic and physiological diversity of microbial prokaryotic life from cosmopolitan to endemic taxa and emphasize their significant roles in the biogeochemical processes in deep-sea hydrothermal vents. According to the physiology of the targeted taxa and their needs inferred from meta-omics data, the media for selective cultivation can be designed with a wide range of physicochemical conditions such as temperature, pH, hydrostatic pressure, electron donors and acceptors, carbon sources, nitrogen sources, and growth factors. The application of novel cultivation techniques with real-time monitoring of microbial diversity and metabolic substrates and products are also recommended.

show abstract

Magnetite formation from ferrihydrite by hyperthermophilic archaea from Endeavour Segment, Juan de Fuca Ridge hydrothermal vent chimneys

Cited by 14 publications

References 59 publications

Reduction and Morphological Transformation of Synthetic Nanophase Iron Oxide Minerals by Hyperthermophilic Archaea

Reduction and Morphological Transformation of Synthetic Nanophase Iron Oxide Minerals by Hyperthermophilic Archaea

Desulfovulcanus ferrireducens gen. nov., sp. nov., a thermophilic autotrophic iron and sulfate-reducing bacterium from subseafloor basalt that grows on akaganéite and lepidocrocite minerals

Microorganisms from deep-sea hydrothermal vents

Contact Info

Product

Resources

About