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Pseudomonas - scanning EM P. aeruginosa colony
Pseudomonads are aerobic Gram-negative rods common in soils. Most strains are oxidase-positive and utilize the Entner - Doudoroff pathway in place of glycolysis. In soils, some strains contribute to denitrification (P. denitrificans), while other strains can be pathogenic in humans (e.g. P. aeruginosa in burn wounds). Many produce fluorescent pigments.
Class γ - Proteobacteria
Bergey's Manual Volume 2: The Proteobacteria
Obligate aerobe, respiratory metabolism, oxidase-positive, fermentation-negative (uses glucose aerobically), reduces nitrate to nitrite or nitrogen (denitrification), casease-positive, catalase-positive, H2S-negative, indole-negative, motile, amylase-negative, DNAse-negative