甘薯杆状DNA病毒B(Sweetpotato badnavirus B,SPBV-B)是花椰菜花叶病毒科杆状DNA病毒属Badnavirus的一个暂定种。Badnavirus病毒粒体为杆状,主要分布在热带和亚热带地区,由带毒寄主植物的无性繁殖材料传播,传毒昆虫介体主要是粉蚧(洪健等,2001)。Kreuze et al.(2009)利用小RNA深度测序法获得了SPBV-B的基因组全序列,全长为7 991 bp,含5个ORFs。目前,我国尚未见有关 Sweetpotato badnavirus B (SPBV-B) is a tentative species of the genus Badnavirus of the cauliflower mosaic virus family. Badnavirus virus particles are rod-shaped, mainly in the tropics and subtropics, and are propagated by vegetatively propagating material with poisonous host plants. The predominant insect mediators are mealybugs (Hong et al., 2001). Kreuze et al. (2009) obtained the complete genome sequence of SPBV-B by using the deep sequencing of small RNAs. The full-length sequence of SPBV-B is 7 991 bp with 5 ORFs. At present, our country has not seen it yet