A new negative-strand RNA (nsRNA) virus genome was discovered in Edgeworthia chrysantha Lindl. This virus, tentatively named “Edgeworthia chrysantha mosaic-associated virus” (ECMaV), has a bipartite genome that comprises (i) a nsRNA1, encoding the viral RNA-dependent RNA polymerase (RdRp), and (ii) an ambisense RNA2, coding for the putative movement protein (MP) and nucleocapsid protein (NP), with the open reading frames separated by a long AU-rich intergenic region (IR). Sequence comparisons and phylogenetic analysis showed that the RdRp is closely related to those of other recently discovered plant-infecting nsRNA viruses in the new genus Coguvirus and that ECMaV can be classified as a member of a novel species.

在Edgeworthia chrysantha Lindl中发现了一种新的负链 RNA (nsRNA) 病毒基因组。这种病毒，暂定名为“Edgeworthia chrysantha mosaic-associated virus”(ECMaV)，具有二分基因组，包括 (i) nsRNA1，编码病毒 RNA 依赖性 RNA 聚合酶 (RdRp)，和 (ii) ambisense RNA2，编码对于推定的运动蛋白 (MP) 和核衣壳蛋白 (NP)，开放阅读框由长的富含 AU 的基因间区域 (IR) 分隔。序列比较和系统发育分析表明，RdRp 与新近发现的 Coguvirus 属中其他感染植物的 nsRNA 病毒密切相关，并且ECMaV可以归类为新物种的成员。