Sweet potato symptomless virus 1 (SPSMV-1) is a single-stranded circular DNA virus. belonging to the genus Mastrevirus (family Geminiviridae) that was first identified on sweet potato plants in South Korea in 2012. Although SPSMV-1 does not induce distinct symptoms in sweet potato plants. its co-infection with different sweet potato viruses is highly prevalent. https://foldlyers.shop/product-category/shields/