@article{RESEARCH,
      recid = {75828},
      author = {Cellier, Gilles and Nordey, Thibault and Cortada, Laura  ... et al.},
      title = {Molecular epidemiology of Ralstonia pseudosolanacearum  phylotype I strains in the South West Indian Ocean region  and their relatedness to African strains},
      journal = {PHYTOPATHOLOGY},
      address = {2022},
      number = {RESEARCH},
      abstract = {Increasing requirements for developing tools allowing fine  strain traceability responsible for epidemics is tightly  linked with the need to understand factors shaping pathogen  populations and their environmental interactions. Bacterial  wilt caused by the Ralstonia solanacearum species complex  (RSSC) is one of the most important plant diseases  (Mansfield et al., 2012) in tropical and sub-tropical  regions. Sadly little or outdated, or no information on its  epidemiology is reported in the literature, although  alarming outbreaks are regularly reported as a disaster. A  large set of phylotype I isolates (n = 2,608) was retrieved  from diseased plants in fields across the South West Indian  Ocean (SWIO) and Africa. This collection enabled further  assessment of the epidemiological discriminating power of  the previously published RS1-MLVA14 scheme. Thirteen  markers were validated and characterized as not equally  informative. Most had little infra-sequevar polymorphism  and their performance depended on the sequevar. Strong  correlation was found with a previously MLST scheme.  However, 2-3% of sequevars were not correctly assigned  through endoglucanase gene sequence. Discriminant Analysis  of Principal Components (DAPC) revealed four groups with  strong phylogenetic relatedness to sequevars 31, 33, and  18. Phylotype I-31 isolates were highly prevalent in the  SWIO and Africa, but their dissemination pathways remain  unclear. Tanzania and Mauritius showed the greatest  diversity of RSSC strains, as the four DAPC groups were  retrieved. Mauritius was the sole territory harboring a  vast Phylogenetic diversity and all DAPC groups. More  research is still needed to understand the high prevalence  of phylotype I-31 at such a large geographic scale.},
      url = {http://worldveg.tind.io/record/75828},
      doi = {https://doi.org/10.1094/PHYTO-09-22-0355-R},
}