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Heterogeneity of rice ragged stunt oryzavirus genome segment 9 and its segregation by insect vector transmission

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Summary

Genomic heterogeneity of genome segment 9 (S9) of rice ragged stunt virus (RRSV) was investigated and a point mutation was found to be responsible for an electrophoretic mobility shift of S9 on polyacrylamide gel electrophoresis (PAGE). A new form of S9 (S9L) which migrated slightly faster than natural S9 (S9U) had the same length with A→C transversion at nt 843. Synthetic S9 with a C:G pair at nt 843 migrated slightly faster than that with an A:U pair. Therefore, we conclude that the single point mutation shifts the electrophoretic mobility. Using polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP), we could detect S9U and S9L alone or mixture in insect vectors after acquisition as well as in infected rice plants.

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Authors and Affiliations

  1. Department of Agrobiology and Bioresources, Faculty of Agriculture, Hokkaido University, Sapporo, Japan

    H. Suga, I. Uyeda, J. Yan, K. Murao & I. Kimura

  2. International Rice Research Institute, Manila, The Philippines

    E. R. Tiongco & P. Cabautan

  3. Shikoku National Agricultural Experiment Station, Zentsuji, Japan

    H. Koganezawa

Authors
  1. H. Suga
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  2. I. Uyeda
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  3. J. Yan
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  4. K. Murao
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  5. I. Kimura
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  6. E. R. Tiongco
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  7. P. Cabautan
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  8. H. Koganezawa
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Suga, H., Uyeda, I., Yan, J. et al. Heterogeneity of rice ragged stunt oryzavirus genome segment 9 and its segregation by insect vector transmission. Archives of Virology 140, 1503–1509 (1995). https://doi.org/10.1007/BF01322677

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  • DOI: https://doi.org/10.1007/BF01322677

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