@article{fdi:010084300,
  title = {{R}ivers and landscape ecology of a plant virus, {R}ice yellow mottle virus along the {N}iger {V}alley},
  author = {{I}ssaka, {S}. and {T}raore, {O}. and {L}ongue, {R}. {D}. {S}. and {G}alzi, {A}gn{\`e}s and {G}ill, {M}. {S}. and {D}ellicour, {S}. and {B}astide, {P}. and {G}uindon, {S}. and {H}{\'e}brard, {E}ug{\'e}nie and {D}ugue, {M}. {J}. and {S}ere, {Y}. and {S}emballa, {S}. and {A}ke, {S}. and {L}emey, {P}. and {F}argette, {D}enis},
  editor = {},
  language = {{ENG}},
  abstract = {{T}o investigate the spread of toggle {R}ice yellow mottle virus ({RYMV}) along the {N}iger {R}iver, regular sampling of virus isolates was conducted along 500 km of the {N}iger {V}alley in the {R}epublic of {N}iger and was complemented by additional sampling in neighbouring countries in {W}est {A}frica and {C}entral {A}frica. {T}he spread of {RYMV} into and within the {R}epublic of {N}iger was inferred as a continuous process using a {B}ayesian statistical framework applied previously to reconstruct its dispersal history in {W}est {A}frica, {E}ast {A}frica, and {M}adagascar. {T}he spatial resolution along this section of the {N}iger {R}iver was the highest implemented for {RYMV} and possibly for any plant virus. {W}e 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 {N}iger {R}iver for their interpretation. {A}s a prerequisite, the temporal signal of the {RYMV} data sets was revisited in the light of recent methodological advances. {T}he role of the hydrographic network of the {N}iger {B}asin 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 {N}iger {R}iver in the {R}epublic of {N}iger in the early 1980s from areas to the southwest of the country where rice was increasingly grown. {V}iral spread was triggered by a major irrigation scheme made of a set of rice perimeters along the river valley. {T}he subsequent spatial and temporal host continuity and the inoculum build-up allowed for a rapid spread of {RYMV} along the {N}iger {R}iver, upstream and downstream, over hundreds of kilometres, and led to the development of severe epidemics. {T}here was no evidence of long-distance dissemination of the virus through natural water. {F}loating rice in the main meanders of the {M}iddle {N}iger did not contribute to virus dispersal from {W}est {A}frica to {C}entral {A}frica. {RYMV} along the {N}iger {R}iver is an insightful example of how agricultural intensification favours pathogen emergence and spread.},
  keywords = {disease ecology ; molecular epidemiology ; viral phylogeography ; landscape ; phylogeography ; {AFRIQUE} {DE} {L}'{OUEST} ; {AFRIQUE} {CENTRALE} ; {NIGER} ; {NIGER} {COURS} {D}'{EAU} ; {NIGER} {VALLEE}},
  booktitle = {},
  journal = {{V}irus {E}volution},
  volume = {7},
  numero = {2},
  pages = {veab072 [14 ]},
  year = {2021},
  DOI = {10.1093/ve/veab072},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084300},
}