Abstract
Pearl millet (Pennisetum glaucum (L.) R. Br.) is a staple food that is widely cultivated in sub-Saharan Africa. In August 2018, a survey was conducted in the main producing regions of Burkina Faso, and leaf samples were analyzed using virion-associated nucleic acid (VANA)-based metagenomic approach and Illumina sequencing. A new virus, tentatively named “Pennisetum glaucum marafivirus” (PGMV), was detected, and its complete nucleotide sequence of 6364 nucleotides was determined. The sequence contains a large open reading frame (ORF) encoding a polyprotein of 224.2 kDa with five domains (methyltransferase, papain-like protease, helicase, RNA-dependent RNA polymerase, and coat proteins), typical of marafiviruses. Additionally, a characteristic conserved marafibox domain was detected in the genome. The nucleotide sequence of the complete PGMV genome shares 68.5% identity with that of sorghum bicolor marafivirus, and its coat protein shares 58.5% identity with that of oat blue dwarf virus. Phylogenetic analysis confirmed that the pearl millet virus is unambiguously grouped with members of the genus Marafivirus in the family Tymoviridae. This is the first report on the occurrence of a marafivirus in pearl millet.
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Acknowledgements
E. Palanga holds a post-doctoral fellowship funded by the program Make Our Planet Again (MOPGA). This project was supported by the CGIAR Research Program on Grain Legumes and Dryland Cereals (CRP GLDC). We thank the farmers from Diébégou for their kind collaboration. This work was performed thanks to the facilities of the “International Joint Laboratory LMI PathoBios: Observatory of plant pathogens in West Africa: biodiversity and biosafety” (www.pathobios.com; twitter.com/PathoBios). We are grateful to the CIRAD Southgreen and INRAE MIGALE bioinformatics facilities for providing computing resources.
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In every case, we obtained permission from the farmers to work in their fields, and the management of the entire project followed the guidelines of the Nagoya protocol regarding access and benefit-sharing.
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Palanga, E., Tibiri, E.B., Bangratz, M. et al. Complete genome sequence of a novel marafivirus infecting pearl millet in Burkina Faso. Arch Virol 167, 245–248 (2022). https://doi.org/10.1007/s00705-021-05262-0
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DOI: https://doi.org/10.1007/s00705-021-05262-0