Genetic diversity and epidemic histories of rice yellow mottle virus in Ghana

• DOI: 10.1016/j.virusres.2023.199106
• Publication Date: 2023-03-30T10:27:07Z
• Authors: Emmanuel Gilbert ...; Maxwell Darko Asante; Valentin Stanisla...; Allen Oppong; Beatrice Elohor Ifie; Kirpal Agyemang O...; Jamel Aribi; Agnès Pinel-Galzi; Aurore Comte; Denis Fargette; Eugénie Hébrard; Oumar Traoré; Samuel Kwame Offei; Eric Yirenkyi Dan...; Nils Poulicard
• Keywords: Solemoviridae; 2. Zero hunger; 0303 health sciences; [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics; Solemoviridae Phylogeography Spatio-temporal dynamics Epidemiological surveillance; Epidemiological surveillance; 610; Genetic Variation; Oryza; Phylogenetics and taxonomy; [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy; Ghana; 630; Article; [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy; Plant Viruses; 3. Good health; Phylogeography; Plant Breeding; 03 medical and health sciences; Spatio-temporal dynamics

Rice yellow mottle virus (RYMV) has persisted as a major biotic constraint to rice production in Africa. However, no data on RYMV epidemics were available Ghana, although it is an intensive rice-producing country. Surveys performed from 2010 2020 eleven rice-growing regions of Ghana. Symptom observations and serological detections confirmed that circulating most these regions. Coat protein gene complete genome sequencings revealed Ghana almost exclusively belongs the strain S2, one strains covering largest area West We also detected presence S1ca which being reported for first time outside its origin. These results suggested complex epidemiological history recent expansion Phylogeographic analyses reconstructed at least five independent introductions last 40 years, probably due cultivation intensification Africa leading better circulation RYMV. In addition identifying some routes dispersion this study contributes surveillance helps design disease management strategies, especially through breeding resistance.