Bradyrhizobium

Genus nameBradyrhizobium
SourcePublished
Alternative namesRhizobium japonicum, Blastobacter denitrificans, Rhizobium lupini, Agrimonas oligotrophica
NCBI taxonomy ID374

Taxonomy

KingdomBacteria

16S gene copy number1-2
GenomesYes12

 In situOther
Filamentous234
Hydrophobic cell surface6


Image of Bradyrhizobium sp. Tv2a.2 using scanning electron microscopy. - Source:2

Autotroph/Mixotroph
Aerobic heterotroph
Nitrite reduction
Fermentation
Fatty acids
Sugars

POSNEGVariableNot assessed

Description

Aerobic, chemoorganotrophs, affiliated with the fixation of atmospheric nitrogen 3 4. Carbohydrates and organic acids are typically utilized as carbon sources for growth 3 4, however some strains of B. japonicum are able to grow autotrophically with H2 as an energy source 5. Denitrification of nitrate to nitrogen is also possible by this species. Young cultures of Bradyrhizobium occur as small rods, but become swollen in older cultures 3 4. No in situ information is available for the genus in wastewater treatment systems.

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Metabolism

 In situOther
Autotroph/Mixotroph45
AOB
NOB
Anammox
Aerobic Heterotroph34
PAO
GAO
Nitrite Reduction7
Sulphate Reduction
Fermentation8
Acetogen
Methanogen
Fatty Acids34
Sugars34
Proteins/Amino Acids

Abundance Information

 10 % percentileMedian90 % percentile
Influent000
Activated Sludge000
Digester-Mesophilic000
Digester-Thermophilic000

Predominant In-

References

[1] - NCBI genome database, NCBI id 374 -

[2] Tian, Parker, Seshadri, Reddy, Markowitz, Ivanova, et al. - High-quality permanent draft genome sequence of Bradyrhizobium sp. Tv2a.2, a microsymbiont of Tachigali versicolor discovered in Barro Colorado Island of Panama. - Stand Genomic Sci 10(): 27. doi:10.1186/s40793-015-0006-0

[3] - -

[4] - -

[5] Hanus, Maier, Evans - Autotrophic growth of H2-uptake-positive strains of Rhizobium japonicum in an atmosphere supplied with hydrogen gas. - Proc. Natl. Acad. Sci. U.S.A. 76(4): 1788-92.

[6] Park, So - Altered cell surface hydrophobicity of lipopolysaccharide-deficient mutant of Bradyrhizobium japonicum. - J. Microbiol. Methods 41(3): 219-26.

[7] - -

[8] Cai, Wilkins, Chen, Ng, Lu, Jia, et al. - Metagenomic Reconstruction of Key Anaerobic Digestion Pathways in Municipal Sludge and Industrial Wastewater Biogas-Producing Systems. - Front Microbiol 7(): 778. doi:10.3389/fmicb.2016.00778

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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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