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A Pathogenic Pseudomonad from Healthy Field-Grown Soybean Plants. Curt Leben, Professor, Department of Plant Pathology, Ohio Agricultural Research and Development Center and The Ohio State University, Wooster 44691; T. D. Miller, Assistant Professor, Department of Plant Pathology, Ohio Agricultural Research and Development Center and The Ohio State University, Wooster 44691. Phytopathology 63:1464-1467. Accepted for publication 14 May 1973. DOI: 10.1094/Phyto-63-1464.

Bacteria resembling Pseudomonas glycinea in culture were isolated from buds, pollinated flowers, and young pods of healthy field soybean plants. These organisms, designated "FD", incited a resistance response on leaves of soybean and other beans, and they reduced emergence and produced dwarfed soybean seedlings following hypocotyl or cotyledon inoculation. FD bacteria resembled isolates of P. syringae on the basis of pathogenicity and laboratory tests. It is suggested that these organisms colonize the aerial parts of soybean plants. Damage likely would occur only when they are introduced into seedling wounds.