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  • Title: Simultaneous detection and differentiation of three viruses in pear plants by a multiplex RT-PCR.
    Author: Yao B, Wang G, Ma X, Liu W, Tang H, Zhu H, Hong N.
    Journal: J Virol Methods; 2014 Feb; 196():113-9. PubMed ID: 24269332.
    Abstract:
    A multiplex RT-PCR (mRT-PCR) assay was developed for detection and differentiation of the Apple stem pitting virus (ASPV), Apple stem grooving virus (ASGV) and Apple chlorotic leaf spot virus (ACLSV), which are viruses frequently occurring in pear trees. Different combinations of mixed primer pairs were tested for their specificity and sensitivity for the simultaneous detection of the three viruses. Three primer pairs were used to amplify their fragments of 247bp, 358bp and 500bp, respectively. The primer pair for ASPV was designed in this work, while the primer pairs for ACLSV and ASGV were from previous reports. The sensitivity and specificity of the mRT-PCR assay for the three viruses were comparable to that of each uniplex RT-PCR. The mRT-PCR was applied successfully for the detection of three viruses in leaves of pear and apple plants, but was unreliable in the detection of ASGV in dormant barks. In conclusion, this mRT-PCR provides a useful tool for the routine and rapid detection and the differentiation of three pear viruses.
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