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Characterization of a defective RNA derived from RNA 3 of the Y strain of cucumber mosaic virus

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Abstract

A defective (D) RNA 3 naturally generated from the Y strain of cucumber mosaic virus (CMV-Y) was characterized using a biologically active cDNA clone. Sequencing of the clone revealed that the D RNA 3, named D RNA 3Yα, was derived from CMV-Y RNA 3 and contained a 10 nt deletion in the 5′ untranslated region and a 162 nt deletion within the 3a open reading frame. Co-inoculation of D RNA 3Yα with CMV-Y derived from in vitro transcripts facilitated propagation of CMV-Y containing D RNA 3Yα in Nicotiana benthamiana or Nicotiana tabacum plants. CMV-Y, however, did not produce deletion mutants upon serial mechanical passages in the plants.

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Acknowledgments

We thank Prof. Peter Palukaitis for critical reading of this manuscript and suggestions. This work was partly funded by Grants-in-Aid for Scientific Research 14760029 and 18780030 from the Ministry of Education, Science, Sports and Culture, Japan.

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Correspondence to Minoru Takeshita.

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Takeshita, M., Matsuo, Y., Yoshikawa, T. et al. Characterization of a defective RNA derived from RNA 3 of the Y strain of cucumber mosaic virus. Arch Virol 153, 579–583 (2008). https://doi.org/10.1007/s00705-007-0026-1

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  • DOI: https://doi.org/10.1007/s00705-007-0026-1

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