000 02458nam a2200289Ia 4500
003 MX-MdCICY
005 20250625153936.0
040 _cCICY
090 _aB-14182
245 1 0 _aContrasting recombination patterns and demographic histories of the plant pathogen Ralstonia solanacearum inferred from MLSA
490 0 _vThe ISME Journal, 6(5), p.961-974, 2012
520 3 _aWe used multilocus sequence analysis (MLSA)on a worldwide collection of the plant pathogenic Ralstonia solanacearum (Betaproteobacteria)to retrace its complex evolutionary history. Using genetic imprints left during R. solanacearum evolution, we were able to delineate distinct evolutionary complex displaying contrasting dynamics. Among the phylotypes already described (I, IIA, IIB, III, IV), eight groups of strains with distinct evolutionary patterns, named clades, were identified. From our recombination analysis, we identified 21 recombination events that occurred within and across these lineages. Although appearing the most divergent and ancestral phylotype, phylotype IV was inferred as a gene donor for the majority of the recombination events that we detected. Whereas this phylotype apparently fuelled the species diversity, ongoing diversification was mainly detected within phylotype I, IIA and III. These three groups presented a recent expanding population structure, a high level of homologous recombination and evidences of long-distance migrations. Factors such as adaptation to a specific host or intense trading of infected crops may have promoted this diversification. Whether R. solanacearum lineages will eventually evolve in distinct species remains an open question. The intensification of cropping and increase of geographical dispersion may favour situations of phylotype sympatry and promote higher exchange of key factors for host adaptation from their common genetic pool.
650 1 4 _aHOMOLOGOUS RECOMBINATION
650 1 4 _aPHYLOGEOGRAPHY
650 1 4 _aPOPULATION EXPANSION
650 1 4 _aBACTERIAL WILT
650 1 4 _aCOALESCENT
700 1 2 _aWicker, E.
700 1 2 _aLefeuvre, P.
700 1 2 _aDe Cambiaire, J-C.
700 1 2 _aLemaire, C.
700 1 2 _aPoussier, S.
700 1 2 _aPrior, P.
856 4 0 _uhttps://drive.google.com/file/d/1D0Q-dG2Un03FTw1mN3B62gEcg1UE4vIL/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942 _2Loc
_cREF1
008 250602s9999 xx |||||s2 |||| ||und|d
999 _c48376
_d48376