Pseudomonas aeruginosa: Its Rôle as a Plant Pathogen

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Abstract
Two iso-lates of Phytomonas polycolor have been found to be indistinguishable from cultures of P. aeruginosa. On the basis of pyocyanin formation, growth at 37[degree] C, and animal pathogenicity, they react as does P. aeruginosa. Agglutination, complement-fixation, and agglutinin-absorption expts. have shown the 2 plant pathogens to be serologically identical with at least 1 animal isolate and closely allied to others. A biochemical comparison has also indicated singleness of the group. 15 isolates of P. aeruginosa derived from many sources have shown the ability to attack tobacco. The type of lesion produced is identical with that produced by P. polycolor. Many of these organisms produce a soft-rot of vegetables like that ascribed to Bacterium marginale. The ability of P. aeruginosa to thrive in plant tissues as well as in warm-blooded animls makes it unique in the field of bacteriology.

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