Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Characterization of an Isolate of Cucumber mosaic virus from Raphanus sativus L.

열무에서 분리한 오이모자이크바이러스 분리주의 특성

  • Rhee, Sun-Ju (Department of Integrative Plant Sciences, Chung-Ang University) ;
  • Hong, Jin-Sung (Institute of Natural Sciences, Seoul Women's University) ;
  • Choi, Jang-Kyung (Department of Applied Biology, Kangwon National University) ;
  • Kim, Eun-Ji (Department of Integrative Plant Sciences, Chung-Ang University) ;
  • Lee, Gung-Pyo (Department of Integrative Plant Sciences, Chung-Ang University)
  • 이선주 (중앙대학교 식물시스템과학과) ;
  • 홍진성 (서울여자대학교 자연과학연구소) ;
  • 최장경 (강원대학교 응용생물학과) ;
  • 김은지 (중앙대학교 식물시스템과학과) ;
  • 이긍표 (중앙대학교 식물시스템과학과)
  • Received : 2011.06.22
  • Accepted : 2011.07.12
  • Published : 2011.08.31
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Abstract

Cucumber mosaic virus (CMV)-like isolate was collected from Raphanus sativus (cv. Choon-hyang), which showed mosaic symptoms. The isolate was confirmed to a strain of CMV by host responses in Vigna unguiculata, Chenopodium amaranticolor and Gomphrena globosa, by viral genome composition with RT-PCR and PCR-RFLP, and by serological analysis. Symptom developed by the strain of CMV was severe in Nicotiana benthamiana, N. glutinosa, N. tabacum (cv. Samsun, cv. Xanthi), Cucumis melo (cv. Early hanover), Cucumis sativus (cv. White wonder), Capsicum annuum (cv. Chung-yang and cv. Geum-top), but mild symptom was developed in Raphanus sativus (cv. Choon-hyang), Brassica rapa ssp. pekinensis (cv. Bul-Am No. 3), and B. juncea (cv. Daenong Jukgot). Newly isolated strain of CMV could infect diverse crops including Solanaceae, Cucurbitaceae and Brassicaceae. We designated the new strain of CMV as Gn-CMV based on the novel infectivity of Brassicaceae. In double-stranded (ds) RNA analysis, Gn-CMV consisted of 3.3, 3.0, and 2.2 kb genomes likewise other strains of CMV. SDS-polyacrylamide gel electrophoresis (SDS-PAGE) showed 28 kDa of the CMV coat protein. By restriction enzyme mapping using Cac8I, ClaI and MspI of RT-PCR products indicated that Gn-CMV belongs to CMV subgroup I.

모자이크증상을 나타내는 열무로부터 Cucumber mosaic virus의 한 계통을 분리하고 특성을 조사하였다. Vigna unguiculata, Chenopodium amaranticolor and Gomphrena globosa에서 분리 바이러스의 기주반응과 dsRNA 분석, RT-PCR 검정, PCR-RFLP, 혈청학적 분석을 통하여 CMV의 한 계통임을 확인하였다. 이 CMV 계통을 다양한 지표식물에 접종하였을 때, Nicotiana benthamiana와 N. glutinosa, N. tabacum, 고추, 오이 그리고 멜론에서는 전형적인 강한 모자이크 병징이 나타났으나, 열무, 배추, 적갓은 매우 약한 병징을 나타내는 특징을 보였다. 새롭게 분리된 CMV 계통은 가지과, 박과 및 배추과 등 광범위한 작물에 감염성을 나타내었으며, 배추과에서의 감염성 차이를 근거로 Gn-CMV로 명명하였다. Double-stranded (ds) RNA를 분리한 분석에서 Gn-CMV는 기 보고된 CMV 계통과 마찬가지로 3.3, 3.0, 그리고 2.2 kb의 독립된 게놈으로 구성되어 있었으며, SDS-PAGE와 Western blotting 분석으로 통하여 28 kDa의 외피단백질을 확인할 수 있었다. RT-PCR로 얻어진 증폭산물을 Cac8I, ClaI and MspI을 이용한 PCR-RFLP를 통하여 CMV subgroup I 임을 확인할 수 있었다.

Keywords

References

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