The Plant Pathology Journal

한국식물병리학회 (The Korean Society of Plant Pathology)
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Molecular Characterization of Apple stem grooving virus Isolated from Talaromyces flavus

  • Shim Hye-Kyung (Department of Genetic Engineering, Sungkyunkwan University) ;
  • Hwang Kyu-Hyon (Department of Genetic Engineering, Sungkyunkwan University) ;
  • Shim Chang-Ki (Organic Farming Technology Division, National Institute of Agricultural Science and Technology, Rural Development Administration (RDA)) ;
  • Son Su-Wan (Department of Genetic Engineering, Sungkyunkwan University) ;
  • Kim Dong-Giun (Environmental Biotechnology National Core Research Center and Division of Applied Life Science, Gyeongsang National University) ;
  • Choi Yong-Mun (Pear Experiment Station, National Horticultural Research Institute, RDA) ;
  • Chung Young-Jae (Department of Biology, Seonam University) ;
  • Kim Dae-Hyun (Evaluation Coordination Officer, Planning and Management Officer, RDA) ;
  • Jee Hyeong-Jin (Organic Farming Technology Division, National Institute of Agricultural Science and Technology, Rural Development Administration (RDA)) ;
  • Lee Suk-Chan (Department of Genetic Engineering, Sungkyunkwan University)
  • 발행 : 2006.09.01
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초록

Talaromyces flavus mediates the transmission of Apple stem grooving virus (ASGV) to several host plants. The ASGV-F carried by T.flavus was partially purified from the fungus. Based on sequence analysis and homology searches, this is closely related to other ASGV strains isolated from host plants. The partially purified viral coat protein (CP) was separated on a 12% SDS-polyacrylamide gel and analyzed by Western blotting with an ASGV anti-serum. A single band at 28 kDa reacted with the ASGV anti-serum. The deduced amino acid sequence of the ORF-l showed conserved domains, including an NTP-binding helicase motif, GFAGSGKT. The amino acid sequences of the helicase and CP showed strong homology to other ASGV strains (98%). All ASGV isolated from plants and fungi had salt bridges composed of the CP and the GFAGSGKT motif of the helicase, which are commonly conserved in plant viruses. These results suggest that ASGV-F is one of ASGV strains isolated from T.flavus based on sequence similarity as well as the serological analysis of CP.

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