Know key facts about Pseudomonas aeruginosa , including its causes, symptoms, diagnosis, and treatment options. Learn how to detect and manage infections early. Pseudomonas aeruginosa is a Gram-negative opportunistic pathogen and a model bacterium for studying virulence and bacterial social traits. While it can be isolated in low numbers from a wide variety of environments including soil and water, it can ... Pseudomonas aeruginosa is a Gram-negative bacterium with several distinctive morphological features that contribute to its pathogenicity and ability to thrive Pseudomonas aeruginosa in Petri dish Pseudomonas aeruginosa is a common encapsulated, Gram-negative, aerobic – facultatively anaerobic, rod-shaped bacterium that can cause disease in plants and animals, including humans. [1][2] A species of considerable medical importance, P. aeruginosa is a multidrug resistant pathogen recognized for its ubiquity, its intrinsically advanced antibiotic resistance mechanisms, and its association with serious illnesses – hospital-acquired infections such ...