Détails Publication
New strains of chickpea chlorotic dwarf virus discovered on diseased papaya and tomato plants in Burkina Faso,
Lien de l'article: doi:10.1007/s00705-017-3262-z
Discipline: Phytopathologie
Auteur(s): Alassane Ouattara, Fidèle Tiendrébéogo, Pierre Lefeuvre, Murielle Hoareau, Sohini Claverie, Edgar Valentin Traoré, Nicolas Barro, Oumar Traoré, Arvind Varsani, Jean-Michel Lett
Auteur(s) tagués: OUATTARA Alassane ; BARRO Nicolas
Renseignée par : OUATTARA Alassane
Résumé

This is the first description of full genome sequences of chickpea chlorotic dwarf virus (CpCDV; genus Mastrevirus; family Geminiviridae) identified in papaya and tomato plants sampled in Burkina Faso. The CpCDV full genome sequences from papaya and tomato share the highest pairwise sequence identity (84% and 93.5%) with Sudanese isolates of the CpCDV-K and CpCDV-M strains, respectively. Based on the strain demarcation threshold ([94% identity) for mastreviruses, we propose two new strains, CpCDV-Q and CpCDV-R, identified in papaya and tomato, respectively. Phylogenetic analysis confirmed that the sequences belong to a distinct clade of the highly diverse population of CpCDVs. Evi- dence of inter-strain recombination provided more support for the important role of recombination in CpCDV evolu- tion. The discovery of CpCDV on papaya, a previously unsuspected host, raises many questions about the natural and potential host range of this dicot-infecting mastrevirus species that is reported to be emerging worldwide.

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