Abstract
Chrysanthemum plants are subject to serious virus diseases, so detection and identification of virus pathogens is important to prevent the virus spread. A reliable one-step multiplex RT-PCR was developed to simultaneously detect two viruses and two viriods: chrysanthemum virus B, tomato Aspermy virus, chrysanthemum stunt viroid and chrysanthemum chlorotic mottle viroid. In addition, we investigated the detection limit and the efficiency of single and multiplex RT-PCR assays. The results showed that the multiplex RT-PCR assay proved to be as sensitive as the single one. In conclusion, this technique is potentially useful in routine diagnosis of chrysanthemum viruses and viroids. The multiplex RT-PCR assay described in this study is the first report of simultaneous detection of virus and viroid in chrysanthemum, which provides a fast, convenient, cost-saving way to detect the virus and viroid mixed infections in plants.
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