A NOTE ON THE DETECTION OF BEAN YELLOW MOSAIC-VIRUS INFECTING WHITE LUPINE IN CANADA

Virus-like symptoms were observed in fields of white lupine (Lupinus a lbus) in Eastern Canada. Affected plants displayed mosaic, leaf stunti ng and deformation, and bunchy growth habit. The disease was successfu lly reproduced in greenhouse by mechanical inoculation of white lupine cv. Ultra. The causal virus was identified as bean yellow mosaic viru s (BYMV) by symptomatology on diagnostic species, electron microscopy, enzyme linked immunosorbent assay (ELISA) and immunodetection after W estern blotting. This is the first report of a viral disease of lupine in Canada. BYMV may represent a significant limitation to lupine cult ure since it is transmitted by aphids and through infected seed.