Biological and Molecular Characterization of an American Sugar Beet-Infecting Beet western yellows virus Isolate

Plant Disease
M BeuveO Lemaire

Abstract

Three aphid-transmitted viruses belonging to the Polerovirus genus, Beet mild yellowing virus (BMYV), Beet chlorosis virus (BChV), and Beet western yellows virus (BWYV), have been described as pathogens of sugar beet. We present the complete biological, serological, and molecular characterization of an American isolate of Beet western yellows virus (BWYV-USA), collected from yellow beet leaves. The biological data suggested that BWYV-USA displayed a host range similar to that of BMYV, but distinct from those of BChV and the lettuce and rape isolates of Turnip yellows virus. The complete genomic RNA sequence of BWYV-USA showed a genetic organization and expression typical of other Polerovirus members. Comparisons of deduced amino acid sequences showed that P0 and the putative replicase complex (P1-P2) of BWYV-USA are more closely related to Cucurbit aphid-borne yellows virus (CABYV) than to BMYV, whereas alignments of P3, P4, and P5 showed the highest homology with BMYV. Intraspecific and interspecific phylogenetic analyses have suggested that the BWYV-USA genome may be the result of recombination events between a CABYV-like ancestor contributing open reading frame (ORF) 0, ORF 1, and ORF 2, and a beet Polerovirus progenitor pro...Continue Reading

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Citations

Dec 4, 2009·The Journal of General Virology·Anna Kozlowska-MakulskaSalah Bouzoubaa
Apr 9, 2010·Journal of Virology·Israel Pagán, Edward C Holmes
Oct 30, 2014·Archives of Virology·Seungmo LimJae Sun Moon
Nov 12, 2009·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Monique JuergensFrank Ordon
Sep 28, 2012·Molecular Plant-microbe Interactions : MPMI·C ReinboldV Brault

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