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Maize fine streak virus, a New Leafhopper-Transmitted Rhabdovirus
Phytopathology
|October 24, 2008
Summary
A new virus, Maize fine streak virus, was identified in sweet corn causing chlorotic streaks. This rhabdovirus is transmitted by Graminella nigrifrons, representing a new Nucleorhabdovirus species.
Area of Science:
- Plant Virology
- Molecular Biology
- Entomology
Background:
- A novel virus caused fine chlorotic streaks in fall-planted sweet corn.
- Initial diagnostics showed weak reactions to Sorghum stunt mosaic virus antisera.
Purpose of the Study:
- To characterize a previously uncharacterized virus isolated from sweet corn.
- To determine the virus's morphology, taxonomic classification, and transmission methods.
Main Methods:
- Vascular puncture inoculation (VPI) and electron microscopy were used.
- Protein analysis and preliminary sequence analysis were performed.
- Transmission studies with Graminella nigrifrons were conducted.
Main Results:
- The virus, Maize fine streak virus (MFSV), is bacilliform (231 x 71 nm) with rhabdovirus morphology.
- Nucleorhabdovirus virions were observed in infected maize tissues.
- MFSV was transmitted by Graminella nigrifrons under persistent conditions.
Conclusions:
- Maize fine streak virus is a new species within the genus Nucleorhabdovirus.
- The virus exhibits distinct morphological and protein characteristics.
- Graminella nigrifrons is an effective vector for MFSV.
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