''Pseudomonas fragi'' is a psychrophilic,

Gram-negative Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wall ...

bacterium Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

that is responsible for dairy spoilage. Unlike many other members of the genus ''Pseudomonas'', ''P. fragi'' does not produce

siderophores Siderophores (Greek: "iron carrier") are small, high-affinity iron-chelating compounds that are secreted by microorganisms such as bacteria and fungi. They help the organism accumulate iron. Although a widening range of siderophore functions is no ...

. Optimal temperature for growth is 30 °C, however it can grow between 0 and 35 °C. Based on 16S

rRNA Ribosomal ribonucleic acid (rRNA) is a type of non-coding RNA which is the primary component of ribosomes, essential to all cells. rRNA is a ribozyme which carries out protein synthesis in ribosomes. Ribosomal RNA is transcribed from ribosoma ...

analysis, ''P. fragi'' has been placed in the '' P. chlororaphis'' group.

References

External links

Type strain of ''Pseudomonas fragi'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Pseudomonadales Bacteria described in 1902 {{Pseudomonadales-stub