Use of Serology to Detect Xanthomonas campestris pv. pelargonii in Aqueous Extracts of Geranium Plants

A direct double-antibody sandwich enzyme-linked immunosorbent assay (DAS-ELISA) proved superior to latex bead agglutination (LBA) for rapid detection of xanthomonas campestris pv. pelargonii in aqueous extracts of geranium plants. The antisera, obtained from rabbits injected with live cells of X.c. pv. pelargonii, did not react with strains of Erwinia Pseudomonas, Clavibacter, or Agrobacterium in either the DAS-ELISA or the LBA tests