Abstract
Wheat plants with yellow stripes on their leaves were collected in the city of Tai’an (Shandong province, China). High-throughput sequencing analysis of the collected plants showed that they were coinfected with wheat leaf yellowing-associated virus (WLYaV) and an unidentified polerovirus. The genome of the unidentified virus, tentatively named “triticum yellow stripe virus” (TriYSV), comprises 5,595 nucleotides and contains seven open reading frames (ORFs), with a typical polerovirus genome structure. Analysis by sequence alignment showed that TriYSV had the highest sequence similarity to wheat yellow dwarf virus (WYDV, a tentative member of the genus Polerovirus), with 87.3% nucleotide sequence identity over the whole genome. Except for P3a and the coat protein (CP), all of the proteins encoded by TriYSV showed < 90% amino acid identity to those of other poleroviruses. Phylogenetic analysis based on RNA-dependent RNA polymerase and CP amino acid sequences and complete genome nucleotide sequences showed that the poleroviruses WYDV, cereal yellow dwarf virus RPS (CYDV-RPS), CYDV-RPV, and barley yellow dwarf virus GPV are the most closely related to TriYSV. Thus, TriYSV is proposed to be a new member of the genus Polerovirus.
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Data availability
The sequences described in this study have been deposited in the GenBank database under accession numbers OM829808-OM829809.
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Funding
This work was financially supported by grants from the Transformation and Application Special Project in Agricultural Scientific and Technological Achievements of Anhui Province (grant number 2022ZH003), the Hefei Postdoctoral Research Activities Foundation, the Natural Science Foundation of Anhui Province (grant number 1908085QC107), and the Natural Science Foundation of Anhui Province (grant number 2008085MC74).
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Communicated by Ralf Georg Dietzgen
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Supplementary Table S1 Primers used for RT-PCR and RACE
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Yan, D., Han, K., Chen, Y. et al. Complete genome sequence of triticum yellow stripe virus, a new polerovirus infecting wheat (triticum aestivum) in China. Arch Virol 168, 146 (2023). https://doi.org/10.1007/s00705-023-05758-x
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DOI: https://doi.org/10.1007/s00705-023-05758-x