Zou Weikun, Chen Shi-Peng, Yang Zhijian, Chen Xuanyang
College of Agronomy, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Department of Horticulture, National Chiayi University, Chiayi 600355, Taiwan.
Curr Issues Mol Biol. 2025 Apr 1;47(4):242. doi: 10.3390/cimb47040242.
China, the largest global producer of sweet potatoes, faces significant threats from viral diseases, particularly in Fujian Province, where sweet potatoes are the second most important food crop after rice. This study identified 11 viruses, including (SPFMV) and (SPCSV), infecting sweet potatoes in Fujian. Sequence comparisons revealed diverse strains from various sources. Virus prevalence varied across regions, with Quanzhou, Fuzhou, and Putian severely affected, detecting 10, 9, and 7 viruses, respectively, compared to only 3 in Sanming and Longyan. In particular, sweet potato virus disease (SPVD) caused the most severe damage during the seeding stages, resulting in dwarfing and leaf deformation, while the damage was lighter during the growth period, manifesting as the yellowing and brittleness of the leaves, ultimately reducing the yield. Compound infestations predominated, with between 0 and 6 viruses infecting different sweet potato varieties. Single-virus infections were observed for (SPV2), (SPSMV-1), and (SPPV), while others, particularly SPCSV, were frequently co-infected with SPFMV, leading to SPVD development. Further analysis showed that the expression of SPCSV was correlated with the SPVD severity in sweet potato. These findings provide insights into the epidemiology of sweet potato viruses and serve as a reference for developing targeted disease management strategies.
中国是全球最大的甘薯生产国，面临着来自病毒病的重大威胁，特别是在福建省，甘薯是仅次于水稻的第二大重要粮食作物。本研究鉴定出11种感染福建甘薯的病毒，包括甘薯羽状斑驳病毒（SPFMV）和甘薯潜隐病毒（SPCSV）。序列比较揭示了来自不同来源的多种毒株。病毒流行率因地区而异，泉州、福州和莆田受影响严重，分别检测到10种、9种和7种病毒，而三明和龙岩仅检测到3种。特别是，甘薯病毒病（SPVD）在播种期造成的损害最为严重，导致植株矮化和叶片变形，而在生长期间损害较轻，表现为叶片发黄和变脆，最终降低产量。复合侵染占主导，0至6种病毒感染不同的甘薯品种。观察到甘薯潜隐病毒2（SPV2）、甘薯轻斑驳病毒-1（SPSMV-1）和甘薯脉花叶病毒（SPPV）为单病毒感染，而其他病毒，特别是SPCSV，经常与SPFMV共同感染，导致SPVD的发生。进一步分析表明，SPCSV的表达与甘薯中SPVD的严重程度相关。这些发现为甘薯病毒的流行病学提供了见解，并为制定有针对性的病害管理策略提供了参考。
