GeothrixDid we forget anything? Let us know

Genus nameGeothrix
SourcePublished
Alternative names
NCBI taxonomy ID44675

Taxonomy

KingdomBacteria
ClassHolophagae
GenusGeothrix

16S gene copy number3
GenomesYes1

 In situOther
Filamentous2
Hydrophobic cell surface


Scanning electron micrograph of cells of strain H-5T. Bar = 1.0 micron. - Source:2

Fermentation
Fatty acids

POSNEGVariableNot assessed

Description

Geothrix is an iron-reducing anaerobic bacterium, described from an isolate sourced from a contaminated aquifer 2. Cells are rod shaped and occur singly or in short chains 2. The sole species of the genus Geothrix fermentans uses acetate, propionate, lactate, fumarate and palmitate as alternative electron donors. Fe(III) serves as sole electron acceptor, but growth can also occur with nitrate, Mn(IV), fumarate and the humic acid analogue 2,6-anthraquinone disulfonate as alternative electron acceptors. Can also grow fermentatively on organic acids, such as fumarate and citrate, yielding acetate and succinate as fermentation products. Produces an electron shuttle for reducing Fe(III) in the external environment. Geothrix's in situ activity in activated sludge has not been studied.

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Metabolism

 In situOther
Autotroph/Mixotroph2
AOB
NOB
Anammox
Aerobic Heterotroph2
PAO
GAO
Nitrite Reduction
Sulphate Reduction2
Fermentation2
Acetogen
Methanogen
Fatty Acids2
Sugars2
Proteins/Amino Acids

Abundance Information

 10 % percentileMedian90 % percentile
Influent000
Activated Sludge00.10.9
Digester-Mesophilic000
Digester-Thermophilic000

Predominant InActivated sludge

References

[1] - NCBI genome database, NCBI id 44675 -

[2] Coates, Ellis, Gaw, Lovley - Geothrix fermentans gen. nov., sp. nov., a novel Fe(III)-reducing bacterium from a hydrocarbon-contaminated aquifer. - Int. J. Syst. Bacteriol. 49 Pt 4(): 1615-22. doi:10.1099/00207713-49-4-1615

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