Comparison of the coat protein, movement protein and RNA polymerase gene sequences of Australian, Chinese, and American isolates of barely yellow dwarf virus transmitted by Rhopalosiphum padi

Archives of Virology
M B WangPeter Waterhouse

Abstract

Barely yellow dwarf luteovirus-GPV (BYDV-GPV) is a common problem in Chinese wheat crops but is unrecorded elsewhere. A defining characteristic of GPV is its capacity to be transmitted efficiently by both Schizaphis graminum and Rhopaloshiphum padi. This dual aphid species transmission contrasts with those of BYDV-RPV and BYDV-SGV, globally distributed viruses, which are efficiently transmitted only by Rhopaloshiphum padi and Schizaphis graminum respectively. The viral RNA sequences encoding the coat protein (22K) gene, the movement protein (17K) gene, the region surrounding the conserved GDD motif of the polymerase gene and the intergenic sequences between these genes were determined for GPV and an Australian isolate of BYDV-RPV (RPVa). In all three genes, the sequences of GPV and RPVa were more similar to those of an American isolate of BYDV-RPV (RPVu) than to any other luteovirus for which there is data available. RPVa and RPVu were very similar, especially their coat proteins which had 97% identity at the amino acid level. The coat protein of GPV had 76% and 78% amino acid identity with RPVa and RPVu respectively. The data suggest that RPVu and RPVa are correctly named as strains of the same serotype and that GPV is suffici...Continue Reading

Citations

Mar 1, 2006·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Narayana M UpadhyayaElizabeth S Dennis
Jul 1, 2002·Molecular Plant Pathology·W Allen MillerRandy Beckett
Aug 6, 2014·Archives of Virology·Muhammad AliMuhammad Tahir
Jul 6, 2004·Journal of Virological Methods·Carolyn M Malmstrom, Ruijie Shu

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