Pseudomonas (Chryseomonas) luteola
P. luteola colonies on Mueller-Hinton agar
P. luteola cells, Gram staining
Cultural characteristics
Biochemical characters
Phylum Proteobacteria, Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae, Genus Pseudomonas,
Pseudomonas luteola  
Kodama et al. 1985. Synonym: CDC group Ve-1.
Moved to
Chryseomonas luteola  Holmes et al. 1987. Returned to Pseudomonas luteola  Anzai et al. 1997.
Chryseomonas polytricha Holmes et al. 1986 is now included in P. luteola species.
Gram negative, motile with polar multitrichous flagella, rods 0.8 by 2.5 µm rods.
R or S type, sometimes wrinkled, yellow colonies (water-insoluble pigment).
Strictly aerobic, optimal growth temperature 30 ºC. Can grow at 42 but not at 5 ºC.
Media: Nutritive agar, Trypticase Soy Agar, Mac Conkey, CASO Agar. Non-hemolytic on
sheep blood agar (admin note).
Isolated from clinical samples from humans and animals, also from rice paddies and
rice flour.
Usually is a saprophyte of humans and animals. Can cause bacteremia, meningitis,
endocarditis, peritonitis in humans and animals (rarely).  Also, its ability to infect
critically ill patients who have undergone surgical operations and/or had indwelling
devices has been described .
Isolated from cat vaginal secretions and human skin (admin note).
  1. Holmes B. Steigerwalt A.G., Weaver R.E. & Brenner D.J.: Chryseomonas luteola comb. nov. and Flavimonas oryzihabitans gen.
    nov., comb. nov., Pseudomonas-like species from human clinical specimens and formerly known, respectively, as groups Ve-1
    and Ve-2. Int. J. Syst. Bacteriol., 1987, 37, 245-250.
  2. Kodama K., Kimura N. & Komagata K.: Two new species of Pseudomonas: P. oryzihabitans isolated from rice paddy and clinical
    specimens and P. luteola isolated from clinical specimens. Int. J. Syst. Bacteriol., 1985, 35, 467-474.
  3. Anzai Y., Kudo Y. & Oyaizu H.: The phylogeny of the genera Chryseomonas, Flavimonas, and Pseudomonas supports synonymy of
    these three genera. Int. J. Syst. Bacteriol., 1997, 47, 249-251.
  4. Jean-Paul Casalta, Pierre-Edouard Fournier, Gilbert Habib, Alberto Riberi, Didier Raoult: Prosthetic valve endocarditis caused by
    Pseudomonas luteola. BMC Infectious Diseases 2005, 5:82doi:10.1186/1471-2334-5-82.
  5. B. Holmes, A. G. Steigerwalt, R. E. Weaver, and Don J. Brenner: Chryseomonas polytricha gen. nov., sp. nov., a Pseudomonas-
    Like Organism from Human Clinical Specimens and Formerly Known as Group Ve-1. Int J Syst Bacteriol April 1986 36:161-165;
  6. Chihab, Wafae & Alaoui, Ahmed & Amar, Mohamed. (2004). Chryseomonas luteola Identified as the Source of Serious Infections
    in a Moroccan University Hospital. Journal of clinical microbiology. 42. 1837-9. 10.1128/JCM.42.4.1837-1839.2004.
Oxidative in glucose and other carbohydrates; distinguished from phenotypically
Flavimonas oryzihabitans by positive test reactions for nitrate reduction,
sorbitol utilization and hydrolysis of ONPG, esculin and arginine.
(c) Costin Stoica
Culture media
Biochemical tests
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Positive results for catalase, nitrate reduction, urease, DNase, gelatin hydrolysis,
esculin hydrolysis, ONPG, acid and alkaline phosphatases, arginine dihydrolase
(some strains may be negative or delayed reaction - admin note), acid production
from: L-arabinose, D-xylose, D-glucose, D-fructose, D-mannose, D-galactose,
L-rhamnose, maltose, trehalose, mannitol, inositol and salicin.
Can utilize L-arabinose, D-xylose, D-ribose, D-glucose, D-fructose, D-mannose,
D-galactose, maltose, trehalose, mannitol, glycerol, acetate, pyruvate, malonate,
fumarate, 2-ketogluconate, gluconate, succinate, p-hydroxybenzoate and glutamate.

Negative results for indole production, H
2S production, starch hydrolysis, Tween 80,
lysine decarboxylase, ornithine decarboxylase,  phenylalanine deaminase, acid
production from: sucrose, lactose, cellobiose, adonitol, sorbitol and inulin.
No utilization of sucrose, lactose, raffinose, inulin, starch, phenol, o-hydroxybenzoate
and m-hydroxybenzoate.