Complete genome sequence of a novel marafivirus infecting pearl millet in Burkina Faso

Palanga Essowé, Tibiri Ezechiel Bionimian, Bangratz Martine, Filloux Denis, Julian Charlotte, Pinel-Galzi Agnès, Koala Moustapha, Bouma Neya James, Brugidou Christophe, Tiendrebeogo Fidèle, Roumagnac Philippe, Hebrard Eugénie. 2022. Complete genome sequence of a novel marafivirus infecting pearl millet in Burkina Faso. Archives of Virology, 167 : 145-148.

https://doi.org/10.1007/s00705-021-05262-0

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Quartile : Q3, Sujet : VIROLOGY

Résumé : 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.

Mots-clés Agrovoc : virus des végétaux, Marafivirus, séquence nucléotidique, Cenchrus americanus, génomique

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés complémentaires : Pennisetum glaucum marafivirus

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

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