Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma

Byoung Eun Min, Tracy S. Feldman, Akhtar Ali, Graham Wiley, Vijay Muthukumar, Bruce A. Roe, Marilyn J. Roossinck, Ulrich Melcher, Michael W. Palmer, Richard S. Nelson

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Native virus-plant interactions require more understanding and their study will provide a basis from which to identify potential sources of emerging destructive viruses in crops. A novel tymovirus sequence was detected in Asclepias viridis (green milkweed), a perennial growing in a natural setting in the Tallgrass Prairie Preserve (TGPP) of Oklahoma. It was abundant within and frequent among A. viridis plants and, to varying extents, within other dicotyledonous and one grass (Panicum virgatum) species obtained from the TGPP. Extracts from A. viridis containing the sequence were infectious to a limited number of species. The virus genome was cloned and determined to be closely related to Kennedya yellow mosaic virus. The persistence of the virus within the Oklahoma A. viridis population was monitored for five successive years. Virus was present in a high percentage of plants within representative areas of the TGPP in all years and was spreading to additional plants. Virus was present in regions adjacent to the TGPP but not in plants sampled from central and south-central Oklahoma. Virus was present in the underground caudex of the plant during the winter, suggesting overwintering in this tissue. The RNA sequence encoding the virus coat protein varied considerably between individual plants (≈3%), likely due to drift rather than selection. An infectious clone was constructed and the virus was named Asclepias asymptomatic virus (AsAV) due to the absence of obvious symptoms on A. viridis.

Original languageEnglish (US)
Pages (from-to)166-176
Number of pages11
JournalPHYTOPATHOLOGY
Volume102
Issue number2
DOIs
StatePublished - Feb 1 2012

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Tymovirus
Asclepias
epidemiology
ecology
viruses
prairies
preserves
Kennedya yellow mosaic virus
Panicum virgatum
Apocynaceae
plant viruses
coat proteins
overwintering
signs and symptoms (plants)

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Plant Science

Cite this

Min, B. E., Feldman, T. S., Ali, A., Wiley, G., Muthukumar, V., Roe, B. A., ... Nelson, R. S. (2012). Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma. PHYTOPATHOLOGY, 102(2), 166-176. https://doi.org/10.1094/PHYTO-05-11-0154
Min, Byoung Eun ; Feldman, Tracy S. ; Ali, Akhtar ; Wiley, Graham ; Muthukumar, Vijay ; Roe, Bruce A. ; Roossinck, Marilyn J. ; Melcher, Ulrich ; Palmer, Michael W. ; Nelson, Richard S. / Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma. In: PHYTOPATHOLOGY. 2012 ; Vol. 102, No. 2. pp. 166-176.
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Min, BE, Feldman, TS, Ali, A, Wiley, G, Muthukumar, V, Roe, BA, Roossinck, MJ, Melcher, U, Palmer, MW & Nelson, RS 2012, 'Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma', PHYTOPATHOLOGY, vol. 102, no. 2, pp. 166-176. https://doi.org/10.1094/PHYTO-05-11-0154

Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma. / Min, Byoung Eun; Feldman, Tracy S.; Ali, Akhtar; Wiley, Graham; Muthukumar, Vijay; Roe, Bruce A.; Roossinck, Marilyn J.; Melcher, Ulrich; Palmer, Michael W.; Nelson, Richard S.

In: PHYTOPATHOLOGY, Vol. 102, No. 2, 01.02.2012, p. 166-176.

Research output: Contribution to journalArticle

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T1 - Molecular characterization, ecology, and epidemiology of a novel tymovirus in asclepias viridis from Oklahoma

AU - Min, Byoung Eun

AU - Feldman, Tracy S.

AU - Ali, Akhtar

AU - Wiley, Graham

AU - Muthukumar, Vijay

AU - Roe, Bruce A.

AU - Roossinck, Marilyn J.

AU - Melcher, Ulrich

AU - Palmer, Michael W.

AU - Nelson, Richard S.

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