ArticleArchives of virology2026
The complete genomic sequence of a novel member of the genus Caulimovirus isolated from Dregea volubilis.
Article in Archives of virology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A novel caulimovirus was identified from diseased leaves of Dregea volubilis exhibiting yellowing and vein-associated chlorosis in Yuanjiang County, Yunnan Province, China. The virus was tentatively named Dregea volubilis caulimovirus 1 (DVCaV1). The complete genome sequence of DVCaV1, determined by de novo assembly of high-throughput sequencing data, comprises 8,160 bp of circular double-stranded DNA containing two intergenic regions and seven open reading frames (ORFs). These ORFs encode (in order) a movement protein (MP), an aphid transmission factor (ATF), a virion-associated protein (VAP), a coat protein (CP), a polymerase polyprotein (Pol, containing protease, reverse transcriptase, and RNase H domains), a transactivator/viroplasmin (TAV) protein, and a hypothetical protein of unknown function. Sequence comparisons revealed the highest nucleotide similarity with strawberry vein banding virus (SVBV; NC_001725). Phylogenetic analysis confirmed DVCaV1 as a member of the genus Caulimovirus, with SVBV as its closest known relative. According to current ICTV species demarcation criteria for the genus Caulimovirus (host range and > 20% nucleotide sequence divergence in the polymerase region), DVCaV1 represents a novel species. This is, to our knowledge, the first report of a caulimovirus detected in naturally symptomatic Dregea volubilis.
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