| Denitrificimonas caeni |
Positive results for catalase, esterase (C4), esterase lipase (C8), leucine arylamidase, nitrate reduction, oxidase and acid production
from D-glucose.
Can utilize caprate and malate.
Negative results for arginine dihydrolase, acid and alkaline phosphatase, cystine arylamidase, alpha-chymotrypsin, esculin
hydrolysis, alpha-fucosidase, alpha- and beta-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, gelatin hydrolysis,
H2S production, indole production, lipase (C14), alpha-mannosidase, naphthol-AS-BI-phosphohydrolase,
N-acetyl-beta-glucosaminidase, starch hydrolysis, trypsin hydrolysis, Tween 80 hydrolysis, urease and valine arylamidase.
Not utilization as sole carbon source: sucrose, D-xylose, adipate, arabinose, citrate, D-glucose, gluconate, maltose, mannitol,
mannose, N-acetylglucosamine and phenylacetate.
from D-glucose.
Can utilize caprate and malate.
Negative results for arginine dihydrolase, acid and alkaline phosphatase, cystine arylamidase, alpha-chymotrypsin, esculin
hydrolysis, alpha-fucosidase, alpha- and beta-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, gelatin hydrolysis,
H2S production, indole production, lipase (C14), alpha-mannosidase, naphthol-AS-BI-phosphohydrolase,
N-acetyl-beta-glucosaminidase, starch hydrolysis, trypsin hydrolysis, Tween 80 hydrolysis, urease and valine arylamidase.
Not utilization as sole carbon source: sucrose, D-xylose, adipate, arabinose, citrate, D-glucose, gluconate, maltose, mannitol,
mannose, N-acetylglucosamine and phenylacetate.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Denitrificimonas, Denitrificimonas caeni (Xiao et al. 2009) Saati-Santamaria et al. 2021.
Synonyms: Thiopseudomonas caeni (Xiao et al. 2009) Rudra and Gupta 2021, Pseudomonas caeni Xiao et al. 2009.
Genus Denitrificimonas, Denitrificimonas caeni (Xiao et al. 2009) Saati-Santamaria et al. 2021.
Synonyms: Thiopseudomonas caeni (Xiao et al. 2009) Rudra and Gupta 2021, Pseudomonas caeni Xiao et al. 2009.
Gram-negative rods, 0.4-0.7 x 1.0-2.0 µm. Motile by means of a polar flagellum.
Non-spore-forming.
Non-spore-forming.
Colonies on TSA are translucent, pale yellow, circular and usually 1-2 mm in diameter
after 2 days incubation at 30 ºC. Does not produce fluorescent pigment on King’s B
media. Growth occurs at 4-37 ºC (optimum, 30 ºC), but not at 42 ºC. Growth occurs at
pH 6.0-10.0 (optimum, pH 7.0–8.0). Growth occurs in the presence of 0-3% (w/v) NaCl
(optimum, 0.5-1%), but not in the presence of 5% (w/v) NaCl. No growth on
MacConkey agar. Aerobic.
after 2 days incubation at 30 ºC. Does not produce fluorescent pigment on King’s B
media. Growth occurs at 4-37 ºC (optimum, 30 ºC), but not at 42 ºC. Growth occurs at
pH 6.0-10.0 (optimum, pH 7.0–8.0). Growth occurs in the presence of 0-3% (w/v) NaCl
(optimum, 0.5-1%), but not in the presence of 5% (w/v) NaCl. No growth on
MacConkey agar. Aerobic.
Isolated from the sludge of an anaerobic (Anammox) bioreactor (2 strains). Denitrifying bacterium.
Undetermined.
- Xiao YP, Hui W, Wang Q, Roh SW, Shi XQ, Shi JH, Quan ZX. Pseudomonas caeni sp. nov., a denitrifying bacterium isolated from
the sludge of an anaerobic ammonium-oxidizing bioreactor. Int J Syst Evol Microbiol 2009; 59:2594-2598. - Saati-Santamaria Z, Peral-Aranega E, Velazquez E, Rivas R, Garcia-Fraile P. Phylogenomic Analyses of the Genus Pseudomonas
Lead to the Rearrangement of Several Species and the Definition of New Genera. Biology (Basel) 2021; 10:0. - Rudra B, Gupta RS. Phylogenomic and comparative genomic analyses of species of the family Pseudomonadaceae: Proposals
for the genera Halopseudomonas gen. nov. and Atopomonas gen. nov., merger of the genus Oblitimonas with the genus
Thiopseudomonas, and transfer of some misclassified species of the genus Pseudomonas into other genera. Int J Syst Evol
Microbiol 2021; 71:5011.
(c) Costin Stoica
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