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

被引:0
作者
Kwon, Joon [1 ,5 ]
Hu, Rongbin [1 ,6 ]
Penicks, Amanda K. [1 ]
Zhang, Chunyu [2 ]
Wang, Yongzhi [2 ]
Lohry, David [3 ]
Fernandez, Elias J. [3 ]
Domier, Leslie L. [4 ]
Hajimorad, M. R. [1 ]
机构
[1] Univ Tennessee, Dept Entomol & Plant Pathol, Knoxville, TN 37996 USA
[2] Jilin Acad Agr Sci, Changchun 130033, Jilin, Peoples R China
[3] Univ Tennessee, Dept Biochem & Cellular & Mol Biol, Knoxville, TN 39316 USA
[4] USDA ARS, Soybean Maize Germplasm Pathol & Genet Res Unit, Urbana, IL 61801 USA
[5] Kumamoto Univ, Int Res Ctr Agr & Environm Biol, Kumamoto 8608555, Japan
[6] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA
关键词
Potyviruses; Recombinant; Host adaptation; RNA viruses; Plant viruses; PLUM-POX-VIRUS; POTATO-VIRUS; PROTEIN; POTYVIRUS; GENE; DETERMINANTS; EXPRESSION; IDENTIFICATION; SUPPRESSION; RESISTANCE;
D O I
10.1007/s00705-024-06071-x
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
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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页数:6
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