Abstract
A panel of five stable hybridoma cell lines secreting mono‐ clonal antibodies (mAbs) were produced using a French mechanically transmitted isolate of barley mild mosaic virus (BaMMV‐MF) as antigen. All mAbs reacted with BaMMV‐MF in two enzyme‐linked immunosorbent assay (ELISA) formats: triple antibody sandwich (TAS)‐ELISA and antigen‐coated plate (ACP)‐ELISA. These mAbs recognized epitopes, present on both degraded virions and intact particles. Four mAbs (5C8, 1D5, 1B12, 1A12) belong to the immunoglobulin (Ig)G class and one mAb (3A9) represents an IgM. The five mAbs were compared in TAS‐ and ACP‐ELISA for reactivity with numerous French isolates. These isolates were detected in TAS‐ and ACP‐ELISA with four mAbs (5C8, 1D5, 1B12, 3A9). In both ELISA systems the mAb 1A12 recognized only an epitope specific for BaMMV‐MF. All mAbs, except 1A12 recognized also the German (BaMMV‐MG), Italian (BaMMV‐I) and Japanese (BaMMV‐Ka1) isolates in both TAS‐ and ACP‐ELISA. The Japanese isolate (BaMMV‐Na1) only reacted with two mAbs (1D5, 5C8) in TAS‐ELISA. Only one mAb (3A9) reacted with BaMMV‐MF, BaMMV‐PF, BaMMV‐I,BaMMV‐MG and BaMMV‐Ka1 in Western blot. These mAbs make it possible to distingish between the three BaMMV serotypes.
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