Preservation of Plant-Pathogenic Bacteria on Silica Gel. Curt Leben, Department of Plant Pathology, Ohio Agricultural Research and Development Center and The Ohio State University, Wooster 44691. John P. Sleesman, Mobay Chemical Corporation, Howe, IN 46746. Plant Dis. 66:327. Accepted for publication 12 August 1981. Copyright 1982 American Phytopathological Society. DOI: 10.1094/PD-66-327.

Thirteen species of plant-pathogenic bacteria, members of Agrobacterium, Corynebacterium, Erwinia, Pseudomonas, and Xanthomonas, were preserved dry on silica gel held at –20 C for 5 yr. Survivors were pathogenic. The method is simple, and the only major equipment required is a household freezer.

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