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Yams without (left) and with (right) virus symptoms, but both plants contain integrated endogenous pararetroviral sequences (EPRVs). The mosaic symptoms on the right are caused by the yam mosaic virus.
Science Blog

Reading the viral fossils hidden in yam genomes

  New genomic evidence could help scientists distinguish ancient viral remnants from active infections—and support safer yam germplasm exchange  Yams are prone to several viruses, and some of their genomes contain diverse viruses known as endogenous pararetroviral sequences (EPRVs),…