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NALDC Record Details:
Tritimovirus P1 functions as a suppressor of RNA silencing and an enhancer of disease symptoms
Wheat streak mosaic virus (WSMV) is an eriophyid mite-transmitted virus of the genus Tritimovirus, family Potyviridae. Complete deletion of HC-Pro has no effect on WSMV virulence or disease synergism, suggesting that a different viral protein suppresses post-transcriptional gene silencing (PTGS). PTGS suppression assays using Nicotiana benthamiana 16C plants expressing GFP were conducted with each WSMV protein; only P1 suppressed PTGS. Symptom enhancement assays were conducted by inoculating Potato virus X (PVX) onto transgenic N. benthamiana. Symptoms produced by PVX were more severe on transgenic plants expressing WSMV P1 or potyvirus HC-Pro compared to transgenic plants expressing GFP or WSMV HC-Pro.
Brock A. Young
Drake C. Stenger
T. Jack Morris
Potato virus X
Wheat streak mosaic virus
Virus Research 2012 v.163 no.2
Journal Articles, USDA Authors, Peer-Reviewed
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