Ralstonia picketti

Ralstonia picketti is a gram-negative, aerobic bacterium found in water, soil, and clinical environments with emerging pathogenic potential in both plant and human contexts. In plants, R. picketti causes vascular disease and plant decline in ornamental species including orchids and hydrangeas, limiting their commercial cultivation. The bacterium invades plant vascular systems causing xylem colonization, wilting, and eventual plant death with limited treatment options available. In clinical settings, R. picketti has been isolated from human infections including wound and soft tissue infections, particularly in immunocompromised patients, though human disease is relatively rare. Water contamination with R. picketti and related species represents an occupational and environmental health concern in healthcare facilities and water systems.