Assaying Levels of Plant Virus by ELISA
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Last Update: 2020-11-20
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Source: Internet
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Author: User
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Enzyme-linked immunosorbent assay (ELISA), since its use with plants was described by Clark and Adams (
1
), has become the most popular method for detection of viruses in plants, because of its simplicity and wide applicability. Used mainly to confirm presence or absence of infection, it can be adapted to estimate concentration of an antigen, e.g., viral capsid protein, in plant sap. The procedure described in detail here is that for double antibody sandwich (DAS) ELISA with alkaline phosphatase-conjugated antibody, which suffices for most occasions. However, the principles outlined will apply equally well to indirect ELISA, using an antispecies conjugate, or to plate trapped antigen ELISA, should those variants be the method of choice for a specific viral protein.
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