Phytopathology (2014) 104, 1360-1369

L.R. Stewart, R. Teplier, J.C. Todd, M.W. Jones, B.J. Cassone, S. Wijeratne, A. Wijeratne and M.G. Redinbaugh (2014)
Viruses in maize and Johnsongrass in southern Ohio
Phytopathology 104 (12), 1360-1369
Abstract: The two major U.S. maize viruses, Maize dwarf mosaic virus (MDMV) and Maize chlorotic dwarf virus (MCDV), emerged in southern Ohio and surrounding regions in the 1960s and caused significant losses. Planting resistant varieties and changing cultural practices has dramatically reduced virus impact in subsequent decades. Current information on the distribution, diversity, and impact of known and potential U.S. maize disease-causing viruses is lacking. To assess the current reservoir of viruses present at the sites of past disease emergence, we used a combination of serological testing and next-generation RNA sequencing approaches. Here, we report enzyme-linked immunosorbent assay and RNA-Seq data from samples collected over 2 years to assess the presence of viruses in cultivated maize and an important weedy reservoir, Johnsongrass (Sorghum halepense). Results revealed a persistent reservoir of MDMV and two strains of MCDV in Ohio Johnsongrass. We identified sequences of several other grass-infecting viruses and confirmed the presence of Wheat mosaic virus in Ohio maize. Together, these results provide important data for managing virus disease in field corn and sweet corn maize crops, and identifying potential future virus threats.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Margaret G. Redinbaugh

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Maize dwarf mosaic virus	Maize/corn (Zea mays)	U.S.A. (NE)
	Emaravirus tritici	Maize/corn (Zea mays)	U.S.A. (NE)
	Sorghum halepense (weed)		U.S.A. (NE)
	Waikavirus zeae	Maize/corn (Zea mays)	U.S.A. (NE)