Abstract
Antisera against important orchid viruses, Cymbidium mosaic virus (CymMV) and Odontoglossum ringspot virus (ORSV), were separately produced using bacterially expressed recombinant capsid proteins (CP), instead of purified virus particles, as immunogens. These antisera were then designated as home-made CymMV CP antiserum (HM-Cy) and home-made ORSV CP antiserum (HM-OR). The high specificity of HM-Cy and HM-OR were confirmed by immunoblot. Their detection limits were determined using indirect-enzyme-linked immunosorbent assay (I-ELISA). Both HM-Cy and HM-OR showed low background reactivity to healthy plants and thus displayed a high S/H ratio (sample OD405/healthy control OD405) in tested orchids. The data indicated that our antisera were efficient and accurate in determination of negative and positive results in ELISA test as commercial antibodies. Therefore, these home-made antisera of CymMV and ORSV are suitable for the certification programme of orchids due to their low cost and high specificity. HM-Cy and HM-OR were further used for a field survey to study the incidence of CymMV and ORSV. The results showed that CymMV is more prevalent than ORSV in Taiwan.
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We thank Mr. Heng Chang and Ms. Wen-Chi Hu for helping collection of orchid samples.
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Lee, SC., Chang, YC. Performances and application of antisera produced by recombinant capsid proteins of Cymbidium mosaic virus and Odontoglossum ringspot virus . Eur J Plant Pathol 122, 297–306 (2008). https://doi.org/10.1007/s10658-008-9293-2
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DOI: https://doi.org/10.1007/s10658-008-9293-2