Xy. Lu et al., The 3 ' terminal sequence of RNA1 of wheat spindle streak mosaic virus Canadian isolate (WSSMV-C), EUR J PL P, 104(8), 1998, pp. 765-768
The sequence of the 3' terminal 1722 nucleotides (nts) of RNA1 of the type
(Canadian) isolate of wheat spindle streak mosaic bymovirus (WSSMV-C) was d
etermined. The sequence started within a single open reading frame (ORF), w
hich was expected to encode the carboxyl terminus of the nuclear inclusion
b protein (NIb) and the capsid protein (CP) of 294 amino acids, followed by
a 3' untranslated region (UTR) of 237 nucleotides. The NIb and CP of WSSMV
-C share 99 and 100% amino acid sequence identity with the corresponding pr
oteins of WSSMV-French isolate (WSSMV-F), but only 89 and 77% with wheat ye
llow mosaic virus (WYMV-J), respectively. The 3'UTR of RNA1 of WSSMV-C shar
es 94% nucleotide sequence identity with that of WSSMV-F but only 73% with
WYMV-J and WYMV-Chinese isolate (WYMV-Chi). The results support the classif
ication of WSSMV-C and WSSMV-F as strains of the same virus species which i
s distinct from WYMV.