Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Dual infections of Tomato mosaic virus (ToMV) and Tomato yellow leaf curl virus (TYLCV), or Tomato mosaic virus (ToMV) and Tomato chlorosis virus (ToCV), detected in tomato fields located in Chungcheongnam-do in 2017

  • Choi, Go-Woon (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kim, Boram (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Ju, Hyekyoung (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Cho, Sangwon (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Seo, Eunyoung (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Kim, Jungkyu (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Park, Jongseok (Department of Horticulture Science, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Hammond, John (United States Department of Agriculture-Agricultural Research Service, Floral and Nursery Plant Research Unit) ;
  • Lim, Hyoun-Sub (Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University)
  • Received : 2017.11.17
  • Accepted : 2018.02.14
  • Published : 2018.03.31
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Abstract

Demand for tomatoes has been increasing every year as people desire more healthy food. In Korea, tomatoes are mainly grown in the Chungnam, Chunnam and Kyungnam provinces. Recently, reports of whitefly-transmitted viral diseases have increased due to newly emerging whitefly pressures caused by climate change in Korea. Specifically, in 2017, the main tomato growing areas, Buyeo and Nonsan in Chungnam, showed damage typical of viral infection; therefore, we investigated viral diseases in these areas. We collected samples with virus-like symptoms and found that not only whitefly transmitted Tomato yellow leaf curl virus (TYLCV) and Tomato chlorosis virus (ToCV) were detected but also Tomato mosaic virus (ToMV, for which no specific vector is known) and Tomato spotted wilt virus (TSWV, transmitted by thrips). The ToMV-infected samples were mostly co-infected with either TYLCV or ToCV. Mixed infections of different combinations of TYLCV, ToCV and ToMV were detected with the mixed infection of two whitefly-transmitted viruses (TYLCV and ToCV) causing the most severe symptoms. According to the CP sequence of each virus, the 100% identities were shown to be Mexico/ABG73017.1 (TYLCV), Greece/CDG34553.1 (ToCV), China/AKN79752 (TSWV), and Australia/NP078449.1 (ToMV). Based on the sequence data, we presumed that these tomato infecting viruses were transmitted through insects and seeds introduced from neighboring countries.

Keywords

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