Abstract
Transcriptome datasets available in public domain serve as valuable resource for identification and characterization of novel viral genomes. Poleroviruses are economically important plant-infecting RNA viruses belonging to the family Solemoviridae. In the present study, we explored the plant transcriptomes available in public domain and identified five putative novel poleroviruses tentatively named as Foeniculum vulgare polerovirus (FvPV), Kalanchoe marnieriana polerovirus (KmPV), Paspalum notatum polerovirus (PnPV), Piper methysticum polerovirus (PmPV), Trachyspermum ammi polerovirus (TaPV) and a novel enamovirus named as Celmisia lyallii enamovirus (ClEV) in Foeniculum vulgare, Kalanchoe marnieriana, Paspalum notatum, Piper methysticum, Trachyspermum ammi and Celmisia lyallii, respectively. Coding-complete genomes (5.56–5.74 kb) of CIEV, KmPV, PnPV, PmPV and TaPV were recovered while only the partial genome of FvPV could be recovered. The genome organization of identified viruses except ClEV is 5’–ORF0–ORF1–ORF2–ORF3a–ORF3–ORF4–ORF5–3’ while that of ClEV is 5’–ORF0–ORF1–ORF2–ORF3–ORF5–3’. Phylogenetic analysis revealed that poleroviruses of apiaceous plants formed a monophyletic clade within the genus Polerovirus.
Data availability
The viral genome sequences described in the study are available at NCBI Third Party Annotation database with accession numbers BK059370-BK059376.
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Acknowledgements
We thank ICAR for the Advanced Supercomputing Hub for Omics Knowledge in Agriculture (ASHOKA) facility available at ICAR-IASRI, New Delhi, India. The authors are grateful to the Head, Division of Genetics and Tree Improvement, the GCR, the Director, IFB (ICFRE), Hyderabad, the Head, Division of Plant Pathology and the Director, ICAR-IARI, New Delhi, for their support. The authors are also thankful to the original submitters of datasets/contigs explored/used in the study.
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VKS involved in conceptualization, methodology, formal analysis, investigation and writing—original draft preparation; KN contributed to formal analysis and investigation, writing—review and editing; VKB participated in conceptualization, resources, supervision, writing—review and editing.
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Kavi Sidharthan, V., Nagendran, K. & Baranwal, V.K. Exploration of plant transcriptomes reveals five putative novel poleroviruses and an enamovirus. Virus Genes 58, 244–253 (2022). https://doi.org/10.1007/s11262-022-01896-7
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DOI: https://doi.org/10.1007/s11262-022-01896-7