Abstract
The complete genome of sweet potato latent virus (SPLV) was determined to be 10081 nucleotides long excluding the 3' poly (A) tail. The genome contains a single large open reading frame encoding a polyprotein of 3247 amino acids. Its genomic organization is typical of potyviruses and contains motifs conserved in members of the genus Potyvirus. Pairwise comparisons show that SPLV shares identities of 50.0%-56.3% to other potyviruses at the genomic sequence level. Phylogenetic analysis shows that SPLV is closely related to four other sweet potato potyviruses in the sweet potato feathery mottle virus lineage, but it lacks the unique PISPO in the P1 region of those viruses. The genome analyses confirm that SPLV is a distinct sweet potato virus in the genus Potyvirus.
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