First Report of Beet soilborne virus in Poland

Plant Disease
N BorodynkoH Pospieszny

Abstract

Beet necrotic yellow vein virus (BNYVV), the casual agent of rhizomania disease, was identified in sugar beet plants from several fields in the Wielkopolska Region of Poland (1). In greenhouse studies, sugar beets were grown in the soil from one of these fields to bait soilborne viruses. Of 200 sugar beet plants, three developed symptoms of vein clearing, vein banding, and mosaic. Crude sap from symptomatic plants was used for mechanical inoculation of various plants species. In Chenopodium quinoa, C. amaranticolor, and Tetragonia expansa only local lesions were observed. Electron microscope examination of negatively stained leaf-dip preparations from symptomatic sugar beet plants showed a mixture of rod-shape particles from 70 to 400 nm long. Using double-antibody sandwich enzyme-linked immunosorbent assay tests, two symptomatic sugar beet plants gave positive reactions with antiserum against BNYVV (Bio-Rad, Hercules, CA) and a third plant gave a positive reaction with antisera against BNYVV and Beet soilborne virus (BSBV). Total RNA was extracted from roots and leaves of the symptomatic plants and used in a multiplex reverse transcription-polymerase chain reaction (mRT-PCR) assay. Specific primers were designed to amplify a f...Continue Reading

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