The Plant Pathology Journal

The Korean Society of Plant Pathology (한국식물병리학회)
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The Current Incidence of Viral Disease in Korean Sweet Potatoes and Development of Multiplex RT-PCR Assays for Simultaneous Detection of Eight Sweet Potato Viruses

  • Kwak, Hae-Ryun (Crop Protection Division, National Academy of Agricultural Science) ;
  • Kim, Mi-Kyeong (Crop Protection Division, National Academy of Agricultural Science) ;
  • Shin, Jun-Chul (Crop Protection Division, National Academy of Agricultural Science) ;
  • Lee, Ye-Ji (Crop Protection Division, National Academy of Agricultural Science) ;
  • Seo, Jang-Kyun (Crop Protection Division, National Academy of Agricultural Science) ;
  • Lee, Hyeong-Un (Bioenergy Crop Research Center, National Institute of Crop Science) ;
  • Jung, Mi-Nam (Bioenergy Crop Research Center, National Institute of Crop Science) ;
  • Kim, Sun-Hyung (Department of Environmental Horticulture, University of Seoul) ;
  • Choi, Hong-Soo (Crop Protection Division, National Academy of Agricultural Science)
  • Received : 2014.04.01
  • Accepted : 2014.09.16
  • Published : 2014.12.01
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Abstract

Sweet potato is grown extensively from tropical to temperate regions and is an important food crop worldwide. In this study, we established detection methods for 17 major sweet potato viruses using single and multiplex RT-PCR assays. To investigate the current incidence of viral diseases, we collected 154 samples of various sweet potato cultivars showing virus-like symptoms from 40 fields in 10 Korean regions, and analyzed them by RT-PCR using specific primers for each of the 17 viruses. Of the 17 possible viruses, we detected eight in our samples. Sweet potato feathery mottle virus (SPFMV) and sweet potato virus C (SPVC) were most commonly detected, infecting approximately 87% and 85% of samples, respectively. Furthermore, Sweet potato symptomless virus 1 (SPSMV-1), Sweet potato virus G (SPVG), Sweet potato leaf curl virus (SPLCV), Sweet potato virus 2 ( SPV2), Sweet potato chlorotic fleck virus (SPCFV), and Sweet potato latent virus (SPLV) were detected in 67%, 58%, 47%, 41%, 31%, and 20% of samples, respectively. This study presents the first documented occurrence of four viruses (SPVC, SPV2, SPCFV, and SPSMV-1) in Korea. Based on the results of our survey, we developed multiplex RT-PCR assays for simple and simultaneous detection of the eight sweet potato viruses we recorded.

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References

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