Bradyrhizobium

RANK: Genus

TAXONOMY: cellular organisms -> Bacteria -> Proteobacteria -> Alphaproteobacteria -> Rhizobiales -> Bradyrhizobiaceae -> Bradyrhizobium

OVERVIEW:

Rods 0.5–0.9 × 1.2–3.0 µm. Commonly pleomorphic under adverse growth conditions. Usually contain granules of poly-β-hydroxybutyrate that are refractile by phase-contrast microscopy. Nonsporeforming. Gram negative. Motile by one polar or subpolar flagellum. Fimbriae have not been described. Aerobic, possessing a respiratory type of metabolism with oxygen as the terminal electron acceptor. Optimal temperature 25–30°C. Optimal pH, 6–7, although lower optima may be exhibited by strains from acid soils. Colonies are circular, opaque, rarely translucent, white, and convex, and tend to be granular in texture; they do not exceed 1.0 mm in diameter in less than 5–6 days incubation on A1EG medium. Turbidity develops only after 3–4 days in agitated broth. Generation times are 9–18 h. Chemoorganotrophic, utilizing a range of carbohydrates and salts of organic acids as carbon sources, without gas formation; arabinose and other pentoses are preferred carbon sources. Cellulose and starch are not utilized. Produce an alkaline reaction in mineral salts medium containing mannitol and/or many other carbohydrates. Growth on carbohydrate media is usually accompanied by extracellular polysaccharide slime production particularly with glycerol, gluconate, or mannitol. Some strains can grow chemolithotrophically in the presence of H2, CO2, and low levels of O2. Ammonium salts, usually nitrates, and some amino acids, can serve as nitrogen sources. Peptone is poorly utilized (except for strains isolated from Lotononis). Casein and agar are not hydrolyzed. There is usually no requirement for vitamins with the rare exception of biotin, which also may be inhibitory to some strains. 3-Ketoglycosides are not produced (Bernaerts and De Ley, 1963). The organisms are characteristically able to enter the root hairs of tropical-zone and some temperate-zone leguminous plants (family Leguminosae) and incite the production of root nodules, in which the bacteria occur as intracellular nitrogen-fixing symbionts. Some strains, especially B. elkanii, fix nitrogen in the free-living state when examined under special conditions.The mol% G + C of the DNA is: 61–65.Type species: Bradyrhizobium japonicum

This genus contains microbial species that can reside in the human gastrointestinal tract. [PMC 4262072]


Gut associated
Microbial Abundance Data: Bradyrhizobium
Percent of total population with standard deviation [PMID: 22698087]. Percentages > 1% highlighted.
Buccal
Mucosa
Keratinized
Gingiva
Hard
Palate
Throat
Tonsils
Saliva
Stool
0.000 %
(0.000)
0.000 %
(0.000)
0.000 %
(0.000)
0.000 %
(0.000)
0.000 %
(0.000)
0.000 %
(0.000)
0.000 %
(0.000)
Name
Rank
Client %
Avg %
Avg StdDev
Client StdDev
Bradyrhizobium
genus
0.002
0.020
DESCENDANTS
  • Bradyrhizobium arachidis
  • Bradyrhizobium betae
  • Bradyrhizobium canariense
  • Bradyrhizobium cytisi
  • Bradyrhizobium daqingense
  • Bradyrhizobium denitrificans
  • Bradyrhizobium diazoefficiens
  • Bradyrhizobium elkanii
  • Bradyrhizobium erythrophlei
  • Bradyrhizobium ferriligni
  • Bradyrhizobium ganzhouense
  • Bradyrhizobium genosp.
  • Bradyrhizobium guangdongense
  • Bradyrhizobium guangxiense
  • Bradyrhizobium huanghuaihaiense
  • Bradyrhizobium icense
  • Bradyrhizobium ingae
  • Bradyrhizobium iriomotense
  • Bradyrhizobium japonicum
  • Bradyrhizobium jicamae
  • Bradyrhizobium kavangense
  • Bradyrhizobium lablabi
  • Bradyrhizobium liaoningense
  • Bradyrhizobium lupini
  • Bradyrhizobium manausense
  • Bradyrhizobium neotropicale
  • Bradyrhizobium oligotrophicum
  • Bradyrhizobium ottawaense
  • Bradyrhizobium pachyrhizi
  • Bradyrhizobium paxllaeri
  • Bradyrhizobium retamae
  • Bradyrhizobium rifense
  • Bradyrhizobium sp.
  • Bradyrhizobium sp. 68A4SAPT
  • Bradyrhizobium sp. CCBAU 53380
  • Bradyrhizobium sp.YB2
  • Bradyrhizobium valentinum
  • Bradyrhizobium vignae
  • Bradyrhizobium viridifuturi
  • Bradyrhizobium yuanmingense
  • environmental samples
  • CLUSTERS WITH
    Group 84
  • Mesorhizobium
  • Rhizobium etli
  • Sinorhizobium meliloti
  • Bradyrhizobium
  • Group 161
  • Frankia
  • Bradyrhizobium
  • Group 155
  • Novosphingobium aromaticivorans
  • Bradyrhizobium
  • Group 97
  • Thiobacillus denitrificans
  • Acidovorax
  • Bradyrhizobium
  • Group 26
  • Mesorhizobium loti
  • Ochrobactrum anthropi
  • Rhizobium etli
  • Brucella melitensis
  • Rhizobium leguminosarum
  • Brucella suis
  • Silicibacter
  • Mesorhizobium
  • Caulobacter crescentus
  • Photobacterium profundum
  • Xylella fastidiosa
  • Sinorhizobium meliloti
  • Rhodobacter sphaeroides
  • Bradyrhizobium
  • Group 17
  • Burkholderia xenovorans
  • Nitrobacter winogradskyi
  • Rhizobium etli
  • Nitrobacter hamburgensis
  • Rhizobium leguminosarum
  • Acidobacteria bacterium
  • Silicibacter
  • Mesorhizobium
  • Sinorhizobium meliloti
  • Paracoccus denitrificans
  • Rhodobacter sphaeroides
  • Bradyrhizobium japonicum
  • Bradyrhizobium
  • Group 38
  • Nocardia farcinica
  • Methylococcus capsulatus
  • Bacillus halodurans
  • Silicibacter pomeroyi
  • Nocardioides
  • Xanthomonas oryzae
  • Gluconobacter oxydans
  • Hyphomonas neptunium
  • Xylella fastidiosa
  • Alcanivorax borkumensis
  • Bradyrhizobium
  • Group 19
  • Rhodopseudomonas palustris
  • Renibacterium salmoninarum
  • Rhodospirillum rubrum
  • Nitrobacter winogradskyi
  • Shewanella oneidensis
  • Cytophaga hutchinsonii
  • Geobacillus kaustophilus
  • Bradyrhizobium japonicum
  • Bradyrhizobium
  • Bartonella bacilliformis
  • Silicibacter pomeroyi
  • Nitrobacter hamburgensis
  • Caulobacter crescentus
  • Paracoccus denitrificans
  • Syntrophus aciditrophicus
  • Rhodobacter sphaeroides

  • METABOLOMICS   

    Growth Enhanced By
  • Vitamin D