Romboutsia

Genus nameRomboutsia
SourcePublished
Alternative namesPreviously a part of p-55-a5 (MiDAS 1.20) which has now been split into Intestinibacter, Terrisporobacter, Romboutsia and Asaccharospora
NCBI taxonomy ID1501226

Taxonomy

KingdomBacteria
PhylumFirmicutes
ClassClostridia
GenusRomboutsia

16S gene copy number
GenomesYes24

 In situOther
Filamentous1
Hydrophobic cell surface


Transmission electron micrograph of cells of strain LAM201T. Bar, 0.5 microns. - Source:3

Autotroph/Mixotroph
Fermentation
Acetogen
Sugars
Proteins/Amino acids

POSNEGVariableNot assessed

Description

Pure culture studies demonstrate a strictly anaerobic, fermentatative metabolism, where the major end products of glucose fermentation are acetate, formate and sometimes lactate 1 4. Sugars including glucose, fructose and maltose, are utilised as sole sources of carbon for growth 1 3. The genomes of all Romboutsia strains indicate that carbohydrate fermentation occurs via glycolysis and that the non oxidative pentose phosphate pathway is also present 4. Romboutsia may be potential acetogens, as the genomes of all Romboutsia strains possess the genes encoding the enzymes involved in the Wood-Ljungdahl pathway, and the presence of formate dehydrogenase has been predicted in all strains but R. ileas CRIB 4. No relevant in situ data has been determined for Romboutsia. Rod shaped cells may be straight or slightly curved, often forming chains of unspecified length 1 3.

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Metabolism

 In situOther
Autotroph/Mixotroph4
AOB
NOB
Anammox
Aerobic Heterotroph135
PAO
GAO
Nitrite Reduction
Sulphate Reduction1
Fermentation13
Acetogen4
Methanogen
Fatty Acids
Sugars13
Proteins/Amino Acids1

Abundance Information

 10 % percentileMedian90 % percentile
Influent0.311.8
Activated Sludge0.40.71.3
Digester-Mesophilic0.91.52.5
Digester-Thermophilic0.61.11.6

Predominant InInfluent

References

[1] Gerritsen, Fuentes, Grievink, van Niftrik, Tindall, Timmerman, et al. - Characterization of Romboutsia ilealis gen. nov., sp. nov., isolated from the gastro-intestinal tract of a rat, and proposal for the reclassification of five closely related members of the genus Clostridium into the genera Romboutsia gen. nov., Intestinibacter gen. nov., Terrisporobacter gen. nov. and Asaccharospora gen. nov. - Int. J. Syst. Evol. Microbiol. 64(Pt 5): 1600-16. doi:10.1099/ijs.0.059543-0

[2] - NCBI genome database, NCBI id 1501226 -

[3] Wang, Song, Zhai, Zhang, Gerritsen, Wang, et al. - Romboutsia sedimentorum sp. nov., isolated from an alkaline-saline lake sediment and emended description of the genus Romboutsia. - Int. J. Syst. Evol. Microbiol. 65(Pt 4): 1193-8. doi:10.1099/ijs.0.000079

[4] Gerritsen, J., Hornung, B., Staneva, I., Ritarl, J., Paulin, L., Rijkers, G.T., Schaap, P., de Vos, W.M., and Smidt, H. (2015) Comparative genomics and functional analysis of the genus Romboutsia provides insight into adaptation to an intestinal lifestyle. In: The genus Romboutsia. Genomic and functional characterisation of novel bacteria dedicated to life in the intestinal tract. PhD Thesis. Chapter 6. pp188-220. - Gerritsen Et Al 2015 -

[5] Ricaboni, Mailhe, Khelaifia, Raoult, Million - Romboutsia timonensis, a new species isolated from human gut. - New Microbes New Infect 12(): 6-7. doi:10.1016/j.nmni.2016.04.001

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The MiDAS taxonomy is a manual curation of the Silva database and is redistributed for non-commercial use only.

 

Citing MiDAS: McIlroy S.J., Saunders A.M., Albertsen M., Nierychlo M., McIlroy B., Hansen A.A., Karst S.M., Nielsen J.L., Nielsen P.H. (2015) MiDAS: the field guide to the microbes of activated sludge. Database, Vol. 2015

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