Multiplex reverse transcription loop-mediated isothermal amplification for the simultaneous detection of CVB and CSVd in chrysanthemum

文献类型： 外文期刊

第一作者： Muhammad, Imtiaz

作者： Muhammad, Imtiaz;Hong, Bo;Liu, Xing-liang;Zhao, Xi-ting;Ge, Bei-bei

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关键词： Chrysanthemum Virus B;Chrysanthemum stunt viroid;Multiplex;Reverse transcription loop-mediated;isothermal amplification;Restriction enzyme

期刊名称：JOURNAL OF VIROLOGICAL METHODS （ 影响因子：2.014； 五年影响因子：2.001 ）

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收录情况： SCI

摘要： A multiplex reverse transcription loop-mediated isothermal amplification (mRT-LAMP) assay was developed for the simultaneous detection of Chrysanthemum Virus B (CVB) and Chrysanthemum stunt viroid (CSVd), which are the major viral pathogens of chrysanthemum worldwide. Two sets of mRT-LAMP primers were designed for the coat protein gene of CVB and the complete nucleotide sequence of CSVd, and a restriction enzyme cleavage site was inserted into two pairs of species-specific primers. The mRT-LAMP assay was designed by combining these two sets fora total of eight primers. The mRT-LAMP method distinguished between CVB and CSVd due to the subsequent restriction enzyme analysis. The sensitivity of the mRT-LAMP method was 10(3) times higher than classical PCR regarding the detection limits for CVB and CSVd. No positive results were observed when RNA from other chrysanthemum pathogens were used as mRT-LAMP templates. The method was verified by testing chrysanthemum samples collected from Beijing and Henan Province and showed high reliability and sensitivity. The developed mRT-LAMP assay also offers an efficient, convenient, and rapid tool for screening chrysanthemum virus and viroid, especially CVB and CSVd, and can be diagnosed in a single reaction. These results suggest that the new mRT-LAMP method may be used routinely for virus and viroid surveys. (C) 2014 Elsevier B.V. All rights reserved.

分类号： R37

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