Delftia acidovorans

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Gram stain Culture

General information
- Taxonomy
  Family: Comamonadaceae
  Formerly: Comamonas, Pseudomonas
  
  Natural habitat
  Environment, soil, water and hospital environment, does not belong to the human flora.
  
  Clinical significance
  Clinical significance is unknown. Is rarely found in patients.
  
  Transmission probably due to exposure to contaminated instruments or solutions.
Gram stain
- Gram negative rods,
  
  lying solitary or in pairs
Culture characteristics
- Obligate Aerobic
  
  First isolate grows slowly.
  
  BA: colonies low convex, smooth, with irregular diffuse edges and griscent.
  
  Is defined as not pigmented (or 44% is defined to have a yellowish soluble pigment)
  
  McConkey: growth, non lactose fermenter
  
  BBAØ: no growth
  Indole: negative
  Gives with Kovacs' reagents a so called orange indole (yellowing by the "anthranilic acid")
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition