|
1
|
Xu T, Lei L, Fu Y, Yang X, Luo H, Chen X, Wu X, Wang Y, Jia MA. Molecular Characterization of a Novel Polerovirus Infecting Soybean in China. Viruses 2022; 14:v14071428. [PMID: 35891408 PMCID: PMC9322011 DOI: 10.3390/v14071428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 02/01/2023] Open
Abstract
Poleroviruses are positive-sense, single-stranded viruses. In this study, we describe the identification of a novel polerovirus isolated from soybean displaying curled leaves. The complete viral genome sequence was identified using high-throughput sequencing and confirmed using rapid amplification of cDNA ends (RACE), RT-PCR and Sanger sequencing. Its genome organization is typical of the members of genus Polerovirus, containing seven putative open reading frames (ORFs). The full genome is composed of single-stranded RNA of 5822 nucleotides in length, with the highest nucleotide sequence identity (79.07% with 63% coverage) for cowpea polerovirus 2 (CPPV2). Amino acid sequence identities of the protein products between the virus and its relatives are below the threshold determined by the International Committee of Taxonomy of Viruses (ICTV) for species demarcation, and this strongly supports this virus’ status as a novel species, for which the name soybean chlorotic leafroll virus (SbCLRV) is proposed. Recombination analysis identified a recombination event in the ORF5 of the 3’ portion in the genome. Phylogenetic analyses of the genome and encoded protein sequences revealed that the new virus is closely related to phasey bean mild yellows virus, CPPV2 and siratro latent polerovirus. Subsequently, we demonstrated the infectivity of SbCLRV in Nicotiana benthamiana via infectious cDNA clone generation and agroinoculation.
Collapse
Affiliation(s)
- Tengzhi Xu
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Lei Lei
- Guizhou Rapeseed Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550008, China;
| | - Yong Fu
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Xiaolan Yang
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Hao Luo
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Xiangru Chen
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Xiaomao Wu
- Institute of Crop Protection, College of Agriculture, Guizhou University, Guiyang 550025, China; (T.X.); (Y.F.); (X.Y.); (H.L.); (X.C.); (X.W.)
| | - Yaqin Wang
- State Key Laboratory of Rice Biology Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
- Correspondence: (Y.W.); (M.-a.J.)
| | - Meng-ao Jia
- Guizhou Academy of Tobacco Sciences, Guiyang 550001, China
- Correspondence: (Y.W.); (M.-a.J.)
| |
Collapse
|