Pseudomonas
Pseudomonas is a genus of Gram-negative, Gammaproteobacteria, belonging to the family Pseudomonadaceae and containing 191 validly described species. The members of the genus demonstrate a great deal of metabolic diversity and consequently are able to colonize a wide range of niches. Their ease of culture "in vitro" and availability of an increasing number of "Pseudomonas" strain genome sequences has made the genus an excellent focus for scientific research; the best studied species include "P. aeruginosa" in its role as an opportunistic human pathogen, the plant pathogen "P. syringae", the soil bacterium "P. putida", and the plant growth-promoting "P. fluorescens, P. lini, P. migulae", and "P. graminis".

Because of their widespread occurrence in water and plant seeds such as dicots, the pseudomonads were observed early in the history of microbiology. The generic name "Pseudomonas" created for these organisms was defined in rather vague terms by Walter Migula in 1894 and 1900 as a genus of Gram-negative, rod-shaped, and polar-flagellated bacteria with some sporulating species, the latter statement was later proved incorrect and was due to refractive granules of reserve materials. Despite the vague description, the type species, "Pseudomonas pyocyanea" (basonym of "Pseudomonas aeruginosa"), proved the best descriptor.
Q34740
genus
Concept
Q632006
Gram-negative
Concept
Q134668
Gammaproteobacteria
Concept
Q138058
Pseudomonadaceae
Concept
Q1057
metabolic
Concept
Q221681
in vitro
Concept
Q7020
genome
Concept
Q31856
P. aeruginosa
Concept
Q17149729
human pathogen
Concept
Q311202
P. syringae
Concept
Q2738168
P. putida
Concept
Q135292
P. fluorescens
Concept
Q7255059
P. lini
Concept
Q7255069
P. migulae
Concept
Q8316
dicots
Concept
Q138058
pseudomonads
Concept
Q7193
microbiology
Concept
Q73247
Walter Migula
PER
Q189998
flagella
Concept
Q31856
Pseudomonas aeruginosa
Concept
Q131143
Pseudomonas
Concept
Q131143
Pseudomonas
Concept
Q131143
Pseudomonas
Concept
Q131143
Pseudomonas
Concept
1894-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1894
DATE
1900-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1900
DATE
taxon rank
Gram staining
parent taxon
taxonomic type
parent taxon
taxonomic type
Gram staining
taxonomic type
parent taxon
parent taxon
parent taxon
parent taxon