Rivers and landscape ecology of a plant virus, Rice yellow mottle virus along the Niger Valley
In: EISSN: 2057-1577 ; Virus Evolution ; https://hal.science/hal-03365735 ; Virus Evolution, 2021, 2021
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academicJournal
Zugriff:
International audience ; To investigate the spread of Rice yellow mottle virus (RYMV) along the Niger River, regular sampling of virus isolates was conducted along 500 km of the Niger Valley in the Republic of Niger and was complemented by additional sampling in neighbouring countries in West Africa and Central Africa. The spread of RYMV into and within the Republic of Niger was inferred as a continuous process using a Bayesian statistical framework applied previously to reconstruct its dispersal history in West Africa, East Africa, and Madagascar. The spatial resolution along this section of the Niger River was the highest implemented for RYMV and possibly for any plant virus. We benefited from the results of early field surveys of the disease for the validation of the phylogeographic reconstruction and from the well-documented history of rice cultivation changes along the Niger River for their interpretation. As a prerequisite, the temporal signal of the RYMV data sets was revisited in the light of recent methodological advances. The role of the hydrographic network of the Niger Basin in RYMV spread was examined, and the link between virus population dynamics and the extent of irrigated rice was assessed. RYMV was introduced along the Niger River in the Republic of Niger in the early 1980s from areas to the southwest of the country where rice was increasingly grown. Viral spread was triggered by a major irrigation scheme made of a set of rice perimeters along the river valley. The subsequent spatial and temporal host continuity and the inoculum build-up allowed for a rapid spread of RYMV along the Niger River, upstream and downstream, over hundreds of kilometres, and led to the development of severe epidemics. There was no evidence of long-distance dissemination of the virus through natural water. Floating rice in the main meanders of the Middle Niger did not contribute to virus dispersal from West Africa to Central Africa. RYMV along the Niger River is an insightful example of how agricultural intensification ...
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Rivers and landscape ecology of a plant virus, Rice yellow mottle virus along the Niger Valley
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Autor/in / Beteiligte Person: | Issaka, Souley ; Traore, Oumar Issiaka, I. ; Longué, Régis Dimitri Skopé ; Pinel-Galzi, Agnès ; Gill, Mandev, S. ; Dellicour, Simon ; Bastide, Paul ; Guindon, Stéphane ; Hébrard, Eugénie ; Dugué, Marie-Jo ; Séré, Yacouba ; Semballa, Silla ; Aké, Séverin ; Lemey, Philippe ; Fargette, Denis ; Université Boubakar Bâ de Tillabéri ; Institut de l'Environnement et Recherches Agricoles Ouagadougou (INERA) ; Centre national de la recherche scientifique et technologique Ouagadougou (CNRST) ; Université de Bangui ; Plant Health Institute of Montpellier (UMR PHIM) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) ; Rega Institute for Medical Research Leuven, België ; Catholic University of Leuven = Katholieke Universiteit Leuven (KU Leuven) ; Université libre de Bruxelles (ULB) ; Institut Montpelliérain Alexander Grothendieck (IMAG) ; Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) ; Méthodes et Algorithmes pour la Bioinformatique (MAB) ; Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM) ; Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) ; Agronomy and Farming Systems ; Institut du Développement Rural ; Université Nazi Boni (Bobo-Dioulasso) (UNB) ; Université Félix Houphouët-Boigny (UFHB) ; ANR-16-CE02-0008,GenoSpace,Nouveaux outils statistiques pour l'analyse spatiale des données génétiques(2016) ; European Project: 0725422(2007) |
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Zeitschrift: | EISSN: 2057-1577 ; Virus Evolution ; https://hal.science/hal-03365735 ; Virus Evolution, 2021, 2021 |
Veröffentlichung: | HAL CCSD ; Oxford University Press, 2021 |
Medientyp: | academicJournal |
DOI: | 10.1093/ve/veab072 |
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