Browsing by Author "Fiallo-Olive, Elvira"

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    Desmodium mottle virus, the first legumovirus (genus Begomovirus) from East Africa
    (Archives of virology, 2017) Mollel, Happyness G.; Sseruwagi, Peter; Ndunguru, Joseph; Alicai, Titus; Colvin, John; Navas-Castillo, Jesu´ s; Fiallo-Olive, Elvira
    A novel bipartite legumovirus (genus Begomovirus, family Geminiviridae), that naturally infects the wild leguminous plant Desmodium sp. in Uganda, was molecularly characterized and named Desmodium mottle virus. The highest nucleotide identities for DNA-A, obtained from two field-collected samples, were 79.9% and 80.1% with the legumovirus, soybean mild mottle virus. DNA-B had the highest nucleotide identities (65.4% and 66.4%) with a typical non-legumovirus Old World begomovirus, African cassava mosaic virus. This is the first report of a legumovirus in East Africa and extends the known diversity of begomoviruses found infecting wild plants in this continent.
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    A novel East African monopartite begomovirus-betasatellite complex that infects Vernonia amygdalina
    (Archives of virology, 2017) Mollel, Happyness G.; Ndunguru, Joseph; Sseruwagi, Peter; Alicai, Titus; Colvin, John; Navas-Castillo, Jesu´ s; Fiallo-Olive, Elvira
    The complete genomes of a monopartite begomovirus (genus Begomovirus, family Geminiviridae) and an associated betasatellite found infecting Vernonia amygdalina Delile (family Compositae) in Uganda were cloned and sequenced. Begomoviruses isolated from two samples showed the highest nucleotide sequence identity (73.1% and 73.2%) to an isolate of the monopartite begomovirus tomato leaf curl Vietnam virus, and betasatellites from the same samples exhibited the highest nucleotide sequence identity (67.1% and 68.2%) to vernonia yellow vein Fujian betasatellite. Following the current taxonomic criteria for begomovirus species demarcation, the isolates sequenced here represent a novel begomovirus species. Based on symptoms observed in the field, we propose the name vernonia crinkle virus (VeCrV) for this novel begomovirus and vernonia crinkle betasatellite (VeCrB) for the associated betasatellite. This is the first report of a monopartite begomovirus-betasatellite complex from Uganda.