Abstract
Tobacco viruses may cause a wide range of diseases that heavily reduce tobacco quality and yield worldwide. In order to detect viral diseases in tobacco fields, a one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) method was established. Nucleotide amplification could be observed clearly after adding SYBR Green I, within 60 min under isothermal conditions, at 63-65 °C with a set of primers targeting the viral coat protein (CP) genes of tobacco viruses including cucumber mosaic virus (CMV), potato virus Y (PVY), tobacco etch virus (TEV), tobacco mosaic virus (TMV) and tobacco vein banding mosaic virus (TVBMV). This method has high specificity and sensitivity. The sensitivity of the RT-LAMP was 10 to 100 times higher than that of the conventional RT-PCR method. The RT-LAMP assay was proven reliable for virus diagnosis of tobacco samples from the field.
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Acknowledgments
The authors would like to thank Wenjun Zhao (of Chinese Academy of Inspection and Quarantine, Beijing, China), Zhanmin Wu, Jin Dai and Ting Huang (of State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University) for kindly providing the tobacco virus samples. This study was supported by 111 Project of Education Ministry of China (B07049) and Key Program for Science and Technology Development of China National Tobacco Corporation (110200902046).
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Zhao, L., Cheng, J., Hao, X. et al. Rapid detection of tobacco viruses by reverse transcription loop-mediated isothermal amplification. Arch Virol 157, 2291–2298 (2012). https://doi.org/10.1007/s00705-012-1441-5
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DOI: https://doi.org/10.1007/s00705-012-1441-5