Pseudomonas protegens
| Pseudomonas protegens | |
|---|---|
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Gamma Proteobacteria |
| Order: | Pseudomonadales |
| Family: | Pseudomonadaceae |
| Genus: | Pseudomonas |
| Species: | P. protegens |
| Binomial name | |
|
Pseudomonas protegens Ramette et al. 2011 |
|
| Type strain | |
|
DSM 19095 |
|
| Synonyms | |
|
Pseudomonas fluorescens Flügge 1886 |
|
Pseudomonas fluorescens Flügge 1886
Pseudomonas protegens are widespread Gram-negative, plant-protecting bacteria. Some of the strains of this novel bacterial species (CHA0 and Pf-5, for example) previously belonged to P. fluorescens. They were reclassified since they seem to cluster separately from other fluorescent Pseudomonas species. P. protegens is phylogenetically related to the Pseudomonas species complexes P. fluorescens, P. chlororaphis, and P. syringae. The bacterial species characteristically produces the antimicrobial compounds pyoluteorin and 2,4-diacetylphloroglucinol (DAPG) which are active against various plant pathogens.
Like P. fluorescens, Pseudomonas protegens is a typical soil microorganism with an extremely versatile metabolism, and can be isolated from roots of various plant species. The microbe is strictly aerobe (no reduction of nitrate) and oxidase-positive. The bacterium grows at temperatures between 4 °C and 36 °C, and has one to three flagella.
The word Pseudomonas means 'false unit', being derived from the Greek words pseudo (Greek: ψευδο 'false') and monas (Latin: monas, fr. Greek: μονάς/μονάδα 'a single unit'). The species name 'protegens' refers to the bacterium's ability to protect plants from soil-borne phytopathogens.
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