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Caladenia virus A, an unusual new member of the family Potyviridae from terrestrial orchids in Western Australia

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Abstract

An isolate of a new virus, Caladenia virus A (CalVA), was identified infecting Australian terrestrial orchids. The complete genome of 9,847 nucleotides encodes 11 gene products typical of most members of the family Potyviridae. Sequence comparisons of the polyprotein revealed that CalVA shared highest sequence identity (37.5-39.6 %) with members of the genus Poacevirus. Although a vector for CalVA was not identified, a mite transmission motif was present in the helper component protease, indicating that, like other poaceviruses, mites may transmit it. CalVA is the only proposed member of the genus Poacevirus not isolated from a poaceous host.

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Acknowledgments

This study was funded by Australian Research Council Linkage Grant LP110200180 with support from the Western Australian Botanic Gardens and Parks Authority, and the Australian Orchid Foundation.

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Authors and Affiliations

  1. Plant Virology, Western Australian State Agricultural Biotechnology Centre, School of Biological Sciences and Biotechnology, Murdoch University, Perth, WA, 6150, Australia

    Stephen J. Wylie, Aaron J. Y. Tan, Hua Li & Michael G. K. Jones

  2. Botanic Gardens and Parks Authority, Kings Park and Botanic Garden, West Perth, WA, 6005, Australia

    Kingsley W. Dixon

Authors
  1. Stephen J. Wylie
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  2. Aaron J. Y. Tan
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  3. Hua Li
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  4. Kingsley W. Dixon
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  5. Michael G. K. Jones
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Correspondence to Stephen J. Wylie.

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Wylie, S.J., Tan, A.J.Y., Li, H. et al. Caladenia virus A, an unusual new member of the family Potyviridae from terrestrial orchids in Western Australia. Arch Virol 157, 2447–2452 (2012). https://doi.org/10.1007/s00705-012-1452-2

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  • DOI: https://doi.org/10.1007/s00705-012-1452-2

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