DETECTION AND CHARACTERIZATION OF A DISTINCT TYPE OF BEET NECROTIC YELLOW VEIN VIRUS-RNA-5 IN A SUGAR-BEET GROWING AREA IN EUROPE

A fifth beet necrotic yellow vein virus (BNYVV) RNA species has been d etected in Europe in sugarbeet infected with P-type BNYVV Very little sequence variation was found between two European sources of this RNA 5, but considerable differences were detected between these two Europ ean sources on the one hand and the four Japanese sources recently ana lysed by Kiguchi et al. on the other. The BNYVV RNA 5-encoded 26K prot eins share a stretch of six amino acids (FRGPGN) with the BNYVV RNA 3- encoded 25K protein which may be of interest in view of the reported i nteractions between the two RNAs in pathogenicity.