@article{fdi:010094929,
  title = {{L}arge- and small-scale population structure of {X}anthomonas oryzae pv. oryzicola, a bacterial pathogen of rice},
  author = {{S}icard, {A}. and {C}arpenter, {S}. {C}. {D}. and {D}iallo, {A}. and {B}aruah, {S}. and {T}ekete, {C}. and {K}onate, {L}. and {K}eita, {I}. and {D}oucoure, {H}. and {N}guyen, {P}. {D}. and {C}ao, {Q}. {L}. and {S}arra, {S}. and {D}embele, {M}. and {T}ollenaere, {C}harlotte and {P}oulin, {L}. and {T}all, {H}. and {B}londin, {L}. and {V}erdier, {V}al{\'e}rie and {K}oebnik, {R}alf and {Z}ougrana, {S}. and {R}aveloson, {H}. and {G}agnevin, {L}. and {O}naga, {G}. and {C}unnac, {S}{\'e}bastien and {V}erni{\`e}re, {C}. and {W}onni, {I}. and {K}oita, {O}. and {S}zurek, {B}oris and {B}ogdanove, {A}. and {H}utin, {M}athilde},
  editor = {},
  language = {{ENG}},
  abstract = {{X}anthomonas oryzae pv. oryzicola is a pathogen of rice responsible for bacterial leaf streak, a disease that can cause up to 32% yield loss. {W}hile it was first reported a century ago in {A}sia, its first report in {A}frica was in the 1980s. {S}ince then, it has been discovered in several countries of both {E}ast and {W}est {A}frica. {I}n this study, we used a combination of genomics and genotyping tools to shed light on its global and local diversity and population structure with a focus on {W}est {A}frica. {O}ur findings group {X}. oryzae pv. oryzicola strains into three clades, an {A}sian, an {E}ast {A}frican-{A}sian, and a {W}est {A}frican clade, and provide evidence of several introduction events from {A}sia being at the origin of outbreaks in {E}ast {A}frica and probably in {W}est {A}frica. {O}ur results further highlight the role of human activities in the local spread of this pathogen and the possible role of several wild rice species and weeds as reservoirs. {F}inally, our results globally support a clonal evolution of {X}. oryzae pv. oryzicola. {H}owever, coinfection of plants with distinct strains of {X}. oryzae pv. oryzicola, observed in {M}ali and {S}enegal, may facilitate some degree of genetic exchange. {IMPORTANCE} {W}est {A}frica has faced a rapid expansion of rice cultivation with importation of rice varieties mostly from {A}sia, and rice now constitutes 37% of the cereal consumed in the region. {T}he bacterial pathogen {X}anthomonas oryzae pv. oryzicola ({X}oc) is causing bacterial leaf streak and threatening rice production in {W}est {A}frica. {L}ittle is known about the pathogen's reservoirs and its modes and routes of dissemination. {W}e used genome sequencing and tandem repeat sequences to describe large- and small-scale population structure and molecular epidemiology. {O}ur results support the role of rice seed trade in the local and global spread of {X}oc. {T}his study further suggests different introduction events from {A}sia to both {E}ast and {W}est {A}frica. {W}e describe local natural dispersal events with some clonal diversification and the possible role of wild rice and weed species as reservoirs. {O}verall, our results indicate that weed management and the enforcement of phytosanitary measures on rice seeds could help control the spread of bacterial leaf streak.},
  keywords = {rice ; molecular epidemiology ; {X}anthomonas oryzae ; bacterial leaf streak ; {AFRIQUE} {DE} {L}'{OUEST} ; {AFRIQUE} {DE} {L}'{EST} ; {ASIE}},
  booktitle = {},
  journal = {{A}pplied and {E}nvironmental {M}icrobiology},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[16 p.]},
  ISSN = {0099-2240},
  year = {2025},
  DOI = {10.1128/aem.01121-25},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094929},
}