Abstract
Polyclonal and monoclonal antibodies (PCAs and MCAs) were tested for the detection ofXanthomonas campestris pv.campestris (Xcc) in cabbage seeds using immunofluorescence microscopy (IF). It was concluded that PCA 94, MCAs 20H6, 2F4, 18G12 and a mixture of MCAs 20H6, 18G12, 2F4 and 16B5 could be used to detect Xcc in seed extracts when 5 min and 2.5 h shaking of seeds are used as extraction methods. The reliability of confirming suspect colonies with MCAs and PCA 94 in IF depended in part on the seed lot tested and the antibody used. Some virulent Xcc strains derived from seed lots, did not react with MCAs 10C5, 2F4, 18G12, 17C12 and 16B5. On the other hand, saprophytic isolates obtained from one seed lot cross-reacted with MCA 17C12 and to a lesser extent with MCAs 2F4, 18G12 and PCA 94. No relationship was found between IF-reactions of Xcc strains using MCAs and reactions of Xcc strains in pathogenicity testing. Xcc andX. c. pv.amoraciae (Xca) could in general not be distinguished on the basis of reactions with MCAs and PCAs. Also in pathogenicity tests Xcc and Xca were hard to distinguish.
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Franken, A.A.J.M. Application of polyclonal and monoclonal antibodies for the detection of Xanthomonas campestris pv. campestris in crucifer seeds using immunofluorescence microscopy. Netherlands Journal of Plant Pathology 98, 95–106 (1992). https://doi.org/10.1007/BF01996322
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DOI: https://doi.org/10.1007/BF01996322