Replacement of P1 of soybean mosaic virus with P1 of clover yellow vein virus has no impact on virus viability and host specificity

文献类型： 外文期刊

第一作者： Kwon, Joon

作者： Kwon, Joon;Hu, Rongbin;Penicks, Amanda K.;Hajimorad, M. R.;Zhang, Chunyu;Wang, Yongzhi;Lohry, David;Fernandez, Elias J.;Domier, Leslie L.;Kwon, Joon;Hu, Rongbin

作者机构：

关键词： Potyviruses; Recombinant; Host adaptation; RNA viruses; Plant viruses

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.5； 五年影响因子：2.2 ）

ISSN： 0304-8608

年卷期： 2024 年 169 卷 7 期

页码：

收录情况： SCI

摘要： Potyvirus genomes are expressed as polyproteins that are autocatalytically cleaved to produce 10 to 12 multifunctional proteins, among which P1 is the most variable. It has long been hypothesized that P1 plays role(s) in host adaptation and host specificity. We tested this hypothesis using two phylogenetically distinct potyviruses: soybean mosaic virus (SMV), with a narrow host range, and clover yellow vein virus (ClYVV), with a broader host range. When the full-length P1 cistron of SMV-N was replaced with P1 from ClYVV-No.30, the chimera systemically infected only SMV-N-permissive hosts. Hence, there were no changes in the host range or host specificity of the chimeric viruses. Despite sharing only 20.3% amino acid sequence identity, predicted molecular models of P1 proteins from SMV-N and ClYVV-No.30 showed analogous topologies. These observations suggest that P1 of ClYVV-No.30 can functionally replace P1 of SMV-N. However, the P1 proteins of these two potyviruses are not determinants of host specificity and host range.

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