Abstract
The sweet potato in the family Convolvulaceae is a dicotyledonous perennial plant. Here, we conducted a comprehensive sweet potato virome study using 10 different libraries from eight regions in Korea and two different sweet potato cultivars by RNA-Sequencing. Comprehensive bioinformatics analyses revealed 10 different virus species infecting sweet potato. Moreover, we identified two novel viruses infecting sweet potato referred to as Sweet potato virus E (SPVE) in the genus Potyvirus and Sweet potato virus F (SPVF) in the genus Carlavirus. Of the identified viruses, Sweet potato feathery mottle virus (SPFMV) was the dominant virus followed by Sweet potato virus C (SPVC) and SPVE in Korea. We obtained a total of 30 viral genomes for eight viruses. Our phylogenetic analyses showed many potyvirus isolates are highly correlated with geographical regions. However, two isolates of SPFMV and a single isolate of Sweet potato virus G (SPVG) were genetically distant from other known isolates. The mutation rate was the highest in SPFMV followed by SPVC and SPVG. Two different sweet potato cultivars, Beni Haruka and Hogammi, were infected by seven and five viruses, respectively. Taken together, we provide a complete list of viruses infecting sweet potato in Korea and diagnostic methods.
Highlights
The sweet potato in the family Convolvulaceae is a dicotyledonous perennial plant
Sweet potato leaf curl virus (SPLCV) is transmitted by vegetative propagation and the insect vector whitefly (Bemisia tabaci)[8], whereas potyviruses infecting sweet potato are transmitted by various insect vectors including Myzus persicae (Sulzer)[9]
We named the libraries based on geographical regions and cultivar names (Table 2)
Summary
The sweet potato in the family Convolvulaceae is a dicotyledonous perennial plant. Here, we conducted a comprehensive sweet potato virome study using 10 different libraries from eight regions in Korea and two different sweet potato cultivars by RNA-Sequencing. The sweet potato [Ipomoea batatas (L.) Lam] is a dicotyledonous perennial plant and a member of the family Convolvulaceae. It is currently widely grown in tropical and temperate regions in the world[1]. Due to their vegetative propagation, most sweet potato cultivars are severely infected by various pathogens. According to the previous studies, many sweet potato germplasm collections and sweet potato cultivars grown in fields in Korea are often coinfected by different viruses[14]. The most frequently identified viruses infecting sweet potato in Korea are two potyviruses, SPFMV and SPVC14,16
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
