Afficher la couverture 'Molecular Variability and Genetic Structure of IYMV in Burkina Faso | Koala, Moustapha' en grand format
/5

0 avis

Molecular Variability and Genetic Structure of IYMV in Burkina Faso

Archive ouverte

Koala, Moustapha | Sérémé, Drissa | Vignols, Florence | Lacombe, Eric | Bantgratz, Martine | Neya, Bouma, James | Brugidou, Christophe | Barro, Nicolas | Traoré, Oumar

Edité par CCSD ; Scientific Research Publishing -

International audience. Imperata yellow mottle virus (IYMV, Sobemovirus) was first described in 2008 in the southwestern region of Burkina Faso (West Africa). The genetic diversity of IYMV was not documented up to day. In this study, the variability of CP of IYMV was evaluated through the molecular characterization of 38 isolates collected in the western part of Burkina Faso. Comparison of sequences of these new isolates and one IYMV sequence available in GenBank revealed that the average nucleotide diversity was low. The ratio of non-synonymous over synonymous nucleotide substitutions per site was low, indicating a CP diversification under strong purifying selection. Despite of the low nucleotide diversity, phylogenetic analyses revealed segregation of IYMV isolates into six major clades. There was no correlation of phylogenetic grouping of isolates based on geographical location. This is the first study of the genetic diversity of IYMV.

Suggestions

Du même auteur

Dynamics of the rice yellow mottle disease in western Burkina Faso: Epidemic monitoring, spatio-temporal variation of viral diversity, and pathogenicity in a disease hotspot

Archive ouverte | Billard, Estelle | CCSD

International audience. The rice yellow mottle virus (RYMV) is a model in plant virus molecular epidemiology, with the reconstruction of historical introduction routes at the scale of the African continent. However,...

A Flexible and Original Architecture of Two Unrelated Zinc Fingers Underlies the Role of the Multitask P1 in RYMV Spread

Archive ouverte | Poignavent, Vianney | CCSD

International audience. Viruses of the sobemovirus genus are plant viruses, most of which generate very important agricultural and financial losses. Among them, the rice yellow mottle virus (RYMV) is one of the most...

An original structural fold underlies the multitask P1, a silencing suppressor encoded by the Rice yellow mottle virus

Archive ouverte | Poignavent, Vianney | CCSD

The Rice Yellow Mottle sobemovirus (RYMV) belongs to the most damaging pathogens devastating rice fields in Africa. P1, a key protein for RYMV, was reported as a potent RNAi suppressor counteracting RNA silencing in plant reporter...

Chargement des enrichissements...