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Sorghum mastrevirus-associated alphasatellites: New geminialphasatellites associated with an African streak mastrevirus infecting wild Poaceae plants on Reunion Island

Claverie Sohini, Varsani Arvind, Hoareau Murielle, Filloux Denis, Roumagnac Philippe, Martin Darren Patrick, Lefeuvre Pierre, Lett Jean-Michel. 2020. Sorghum mastrevirus-associated alphasatellites: New geminialphasatellites associated with an African streak mastrevirus infecting wild Poaceae plants on Reunion Island. Archives of Virology, 165 (8) : pp. 1925-1928.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Url - éditeur : https://www.ncbi.nlm.nih.gov/nuccore/MN901967 / Url - jeu de données : https://www.ncbi.nlm.nih.gov/nuccore/MN901975 / Url - éditeur : https://rdcu.be/b5TC4

Abstract : Nine complete nucleotide sequences of geminialphasatellites (subfamily Geminialphasatellitinae, family Alphasatellitidae) recovered from the wild Poaceae Sorghum arundinaceum collected in Reunion are described and analyzed. While the helper geminivirus was identified as an isolate of maize streak virus (genus Mastrevirus, family Geminiviridae), the geminialphasatellite genomes were most closely related to, and shared ~63% identity with, clecrusatellites. Even though the geminialphasatellite molecules lack an adenine rich-region, they have the typical size of geminialphasatellites, encode a replication-associated protein in the virion sense, and have probable stem-loop structures at their virion-strand origins of replication. According to the proposed geminialphasatellite species and genus demarcation thresholds (88% and 70% nucleotide identity, respectively), the genomes identified here represent a new species (within a new genus) for which we propose the name “Sorghum mastrevirus-associated alphasatellite” (genus “Sorgasalphasatellite”).

Mots-clés Agrovoc : Sorghum arundinaceum, Géminivirus, Séquence nucléotidique, Génome

Mots-clés géographiques Agrovoc : Réunion

Mots-clés complémentaires : geminialphasatellites, Mastrevirus

Classification Agris : H20 - Plant diseases

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

Agence(s) de financement européenne(s) : European Commission

Auteurs et affiliations

  • Claverie Sohini, CIRAD-BIOS-UMR PVBMT (REU)
  • Varsani Arvind, Arizona State University (USA)
  • Hoareau Murielle, CIRAD-BIOS-UMR PVBMT (REU)
  • Filloux Denis, CIRAD-BIOS-UMR BGPI (FRA)
  • Roumagnac Philippe, CIRAD-BIOS-UMR BGPI (FRA) ORCID: 0000-0001-5002-6039
  • Martin Darren Patrick, Montpellier SupAgro (FRA)
  • Lefeuvre Pierre, CIRAD-BIOS-UMR PVBMT (REU)
  • Lett Jean-Michel, CIRAD-BIOS-UMR PVBMT (REU) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/596273/)

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