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- W2012201065 abstract "Twenty-two isolates of Cymbidium mosaic virus (CyMV) were isolated from 35 orchid plants suspected of being infected with CyMV. Among the three methods used for detecting CyMV, immunoelectron microscopy (IEM-1) was shown to be the most sensitive method, being able to detect the virus in 71.43% of suspected CyMV-infected plants while the electron microscopic method and the indexing plant method could detect 51.43 and 42.86%, respectively. Out of 12 symptomless plants investigated, 25% were found by IEM-1 method to be infected with the virus. Purified CyMV were flexuous rods having lengths between 470-490 nm. A few end-to-end aggregates were also observed and the 280 260 absorbance ratios were from 0.884 to 0.929. The yield of CyMV was 31.07 to 44.09 mg per kg of Datura leaves. Antibodies against purified CyMV D2 were produced in rabbits and hens. The antibody titers in the yolk and sera of hens indicated that 0.5 mg of virus per immunization efficiently generated an abundant supply of IgY in the yolk, however 1 mg of virus per immunization gave a stronger immune response in both sera and yolk. The average yields of IgY were 6.5 +/- 0.6 and 9.4 +/- 0.9 mg/ml of yolk in the group that received 0.5 mg and the group that received 1.0 mg of the virus, respectively. Positive ELISA reactions were observed in 18 and 20 of 22 CyMV isolates when detected with rabbit IgG and IgY, respectively, demonstrating that those isolates were serologically related and the ELISA reactions were shown to be stronger with IgY than those with rabbit IgG in most isolates. The degree of reaction between the CyMV isolates, O(2) and O(4), and IgY was less than that of the other isolates. The two isolates, D(6) and Cat(6), gave negative reactions to rabbit IgG. The results of ELISA assays showed that the homologous serological reaction was not consistently stronger than the heterologous one. Twelve isolates out of twenty-two gave stronger reactions than the homologous antigen (CyMV D(2)) when IgY was used as the detecting antibody while nine isolates gave stronger reactions when using rabbit IgG. No reactions were observed with other plant viruses and plant proteins from healthy Datura." @default.
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- W2012201065 title "Detection and serological relationships of cymbidium mosaic potexvirus isolates" @default.
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- W2012201065 doi "https://doi.org/10.1016/s1389-1723(99)89006-9" @default.
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