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Dating the origins of the maize-adapted strain of maize streak virus, MSV-A

Harkins Gordon William, Martin Darren Patrick, Duffy Siobain, Monjane Adérito Luis, Shepherd Dionne Natalie, Windram Oliver P., Owor Betty E., Donaldson Lara, Van Antwerpen Tania, Sayed Rizwan A., Flett Bradley, Ramusi Moses, Rybicki Edward P., Peterschmitt Michel, Varsani Arvind. 2009. Dating the origins of the maize-adapted strain of maize streak virus, MSV-A. Journal of General Virology, 90 (12) : 3066-3074.

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Quartile : Q2, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q2, Sujet : VIROLOGY

Résumé : Maize streak virus (MSV), which causes maize streak disease (MSD), is one of the most serious biotic threats to African food security. Here, we use whole MSV genomes sampled over 30 years to estimate the dates of key evolutionary events in the 500 year association of MSV and maize. The substitution rates implied by our analyses agree closely with those estimated previously in controlled MSV evolution experiments, and we use them to infer the date when the maize-adapted strain, MSV-A, was generated by recombination between two grass-adapted MSV strains. Our results indicate that this recombination event occurred in the mid-1800s, ~20 years before the first credible reports of MSD in South Africa and centuries after the introduction of maize to the continent in the early 1500s. This suggests a causal link between MSV recombination and the emergence of MSV-A as a serious pathogen of maize.

Mots-clés Agrovoc : virus striure du maïs, Zea mays

Mots-clés géographiques Agrovoc : Afrique du Sud

Mots-clés complémentaires : Maize streak virus

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Harkins Gordon William, University of the Western Cape (ZAF)
  • Martin Darren Patrick, Institute of Infectious Diseases and Molecular Medicine (ZAF)
  • Duffy Siobain, Rutgers University (USA)
  • Monjane Adérito Luis, UCT (ZAF)
  • Shepherd Dionne Natalie, UCT (ZAF)
  • Windram Oliver P., University of Warwick (GBR)
  • Owor Betty E., UCT (ZAF)
  • Donaldson Lara, UCT (ZAF)
  • Van Antwerpen Tania, SASRI (ZAF)
  • Sayed Rizwan A., UCT (ZAF)
  • Flett Bradley, ARC (ZAF)
  • Ramusi Moses, ARC (ZAF)
  • Rybicki Edward P., UCT (ZAF)
  • Peterschmitt Michel, CIRAD-BIOS-UMR BGPI (FRA)
  • Varsani Arvind, UCT (ZAF)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/553922/)

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