以感染ArMV的百合种球制备粗提液,分别用聚乙二醇(PEG-6000)和免疫磁珠(Immuno-magnetic beads,IMB)进行富集处理,以富集处理后的样品进行ELISA、RT-PCR和SYBR Green I实时荧光RT-PCR检测。结果表明:富集处理能显著提高这些方法从百合...以感染ArMV的百合种球制备粗提液,分别用聚乙二醇(PEG-6000)和免疫磁珠(Immuno-magnetic beads,IMB)进行富集处理,以富集处理后的样品进行ELISA、RT-PCR和SYBR Green I实时荧光RT-PCR检测。结果表明:富集处理能显著提高这些方法从百合种球样品中检测ArMV的灵敏度。PEG-RT-PCR可检测稀释至10^(-5)的样品,IMB-RT-PCR可检测稀释至10^(-3)的样品。实时荧光RT-PCR检测也表明,PEG对百合种球中ArMV的富集效果优于IMB处理。对19批进境百合种球进行ArMV的RT-PCR检测,发现PEG或IMB富集处理提高了阳性样品的检出率。展开更多
Arabis mosaic virus(ArMV)had been found in the Gladiolus hybridus imported from the Netherlands by DAS-ELISA.Two pairs of primers were designed according to the conserved region of the coat protein(CP) gene sequence o...Arabis mosaic virus(ArMV)had been found in the Gladiolus hybridus imported from the Netherlands by DAS-ELISA.Two pairs of primers were designed according to the conserved region of the coat protein(CP) gene sequence of Arabis mosaic virus(ArMV),and two amplified bands with expected sizes of 750 bp and 250 bp were obtained by reverse transcription polymerase chain reaction(RT-PCR).The sensitivity of nested PCR was higher than that of single RT-PCR.Analysis of the partial sequenced CP gene showed that the isolate was closed to ArMV with similarity of 99.0%-100%.All the results demonstrated that the isolated virus was ArMV.展开更多
文摘以感染ArMV的百合种球制备粗提液,分别用聚乙二醇(PEG-6000)和免疫磁珠(Immuno-magnetic beads,IMB)进行富集处理,以富集处理后的样品进行ELISA、RT-PCR和SYBR Green I实时荧光RT-PCR检测。结果表明:富集处理能显著提高这些方法从百合种球样品中检测ArMV的灵敏度。PEG-RT-PCR可检测稀释至10^(-5)的样品,IMB-RT-PCR可检测稀释至10^(-3)的样品。实时荧光RT-PCR检测也表明,PEG对百合种球中ArMV的富集效果优于IMB处理。对19批进境百合种球进行ArMV的RT-PCR检测,发现PEG或IMB富集处理提高了阳性样品的检出率。
文摘Arabis mosaic virus(ArMV)had been found in the Gladiolus hybridus imported from the Netherlands by DAS-ELISA.Two pairs of primers were designed according to the conserved region of the coat protein(CP) gene sequence of Arabis mosaic virus(ArMV),and two amplified bands with expected sizes of 750 bp and 250 bp were obtained by reverse transcription polymerase chain reaction(RT-PCR).The sensitivity of nested PCR was higher than that of single RT-PCR.Analysis of the partial sequenced CP gene showed that the isolate was closed to ArMV with similarity of 99.0%-100%.All the results demonstrated that the isolated virus was ArMV.