A new potexvirus associated with strawberry mild yellow edge disease

The nucleotide sequence of potato mop-top virus RNA 2: a novel type of genome organization for a furovirus

“…For instance, lily X potexvirus lacks the third of the genes and reaches only low concentrations in plant tissue (Memelink et al, 1990). Strawberry mild yellow edgeassociated potexvirus appears to lack an initiation codon for the first triple block ORF and is confined to phloem tissue (Jelkmann et al, 1990(Jelkmann et al, , 1992. This suggests that the protein normally encoded by this gene is not needed for cell-to-cell movement in phloem tissue, and is evidence that different processes are involved in virus movement between phloem cells and between mesophyll cells.…”

The entire nucleotide sequence of foxtail mosaic virus RNA

“…The sequence of the genomic RNA (gRNA) of some members of the potexvirus group has been completed: white clover mosaic virus (WC1MV) (strain M, Forster et al, 1988;strain O, Beck et al, 1990), potato virus X (PVX) (Russian strain, Skryabin et aL, 1988a;strain X3, Huisman et aL, 1988;Andean strain, Orman et al, 1990), narcissus mosaic virus (NMV) (Zuidema et al, 1989), papaya mosaic virus (PMV) (Sit et al, 1989) and clover yellow mosaic virus (CYMV) (Sit et al, 1990). Partial sequences are known for potato aucuba mosaic virus (PaMV) (Bundin et al, 1986), lily virus X (LVX) (Memelink et al, 1990) and strawberry mild yellow edge-associated virus (SMYEAV) (Jelkmann et al, 1990). The organization of potential coding sequences in these viruses is generally well-conserved and supports a model for gene organization proposed by Bendena & Mackie (1986).…”

Nucleotide Sequence of Shallot Virus X RNA Reveals a 5'-proximal Cistron Closely Related to Those of Potexviruses and a Unique Arrangement of the 3'-proximal Cistrons

“…Virus-specific RNAs were revealed with a heavily 32p-labelled RNA transcript complementary to the T-proximal region of ShVX RNA which was synthesized using phage SP6 RNA polymerase on the pX23 plasmid (cDNA insert 8336 to 8890; Fig. 1 Levay & Zavriev, 1991), potato aucuba mosaic virus (PAMV; Bundin et al, 1986), potato virus X (PVX; Huisman et al, 1988), white clover mosaic virus (WCIMV;Forster et al, 1988), narcissus mosaic virus (N MV;Zuidema et al, 1989), papaya mosaic virus (PMV; Sit et al, 1989), lily virus X (LVX; Memelink et al, 1990), clover yellow mosaic virus (CYMV; Sit et al, 1990), strawberry mild yellow edge-associated potexvirus (SMYEV;Jelkmann et al, 1990), turnip yellow mosaic virus (TYMV; Morch et al, 1988) and apple chlorotic leaf spot virus (ACLSV ;German et al, 1990) were predicted from the nucleotide sequences of the viral RNAs. The initial sequence alignments of the virus proteins were made with the MULTALIN program (Corpet, 1988).…”