中文摘要：玉米粗缩病（MRDD）长期以来一直被称为全球最具破坏性的玉米病毒性病害之一，由4种斐济病毒即欧洲和中东的玉米粗缩病毒（MRDV）、南美的里奥夸尔托病毒（MRCV）、水稻黑条矮缩病（RBSDV）和东亚的南方水稻黑条矮缩病毒（SRBSDV或RBSDV-2）中的一种或多种混合侵染所致。目前，这些病毒被归类为呼肠孤病毒科斐济病毒属中4个不同物种，但它们的分类地位受到质疑。为了帮助解决这个问题，已经鉴定了MRDV 意大利分离株10个基因组片段的核苷酸序列，提供了该病毒的第一个完整的基因组序列。研究结果表明，MRDV和RBSDV应归类为相同病毒种类的不同地理株，建议考虑使用谷物黑条矮缩病毒（CBSDV）进行命名。
外文摘要：Maize rough dwarf disease (MRDD) has long been known as one of the most devastating viral diseases of maize worldwide and is caused by single or complex infection by four fijiviruses: Maize rough dwarf virus (MRDV) in Europe and the Middle East, Mal de Rio Cuarto virus (MRCV) in South America, rice black-streaked dwarf virus (RBSDV), and Southern rice black-streaked dwarf virus (SRBSDV or Rice black-streaked dwarf virus 2, RBSDV-2) in East Asia. These are currently classified as four distinct species in the genus Fijivirus, family Reoviridae, but their taxonomic status has been questioned. To help resolve this, the nucleotide sequences of the ten genomic segments of an Italian isolate of MRDV have been determined, providing the first complete genomic sequence of this virus. Its genome has 29144 nucleotides and is similar in organization to those of RBSDV, SRBSDV, and MRCV. The 13 ORFs always share highest identities (81.3-97.2%) with the corresponding ORFs of RBSDV and phylogenetic analyses of the different genome segments and ORFs all confirm that MRDV clusters most closely with RBSDV and that MRCV and SRBSDV are slightly more distantly related. The results suggest that MRDV and RBSDV should be classified as different geographic strains of the same virus species and we suggest the name cereal black-streaked dwarf fijivirus (CBSDV) for consideration.
外文关键词：Maize rough dwarf virus (MRDV); Rice black-streaked dwarf virus (RBSDV); Fijivirus; Cereal black-streaked dwarf fijivirus (CBSDV)
作者：Xie, L.; Lv, M. -F.; Yang, J.; 等
作者单位：浙江农科院
期刊名称：ACTA VIROLOGICA
期刊影响因子：0.673
出版年份：2017
出版刊次：12