@article{fdi:010089902,
  title = {{E}uropean origin of {B}radyrhizobium populations infecting lupins and serradella in soils of {W}estern {A}ustralia and {S}outh {A}frica},
  author = {{S}tekowski, {T}. and {M}oulin, {L}ionel and {K}rzyanska, {A}. and {M}c{I}nnes, {A}. and {L}aw, {I}. {J}. and {H}owieson, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e applied a multillocus phylogenetic approach to elucidate the origin of serradella and lapin {B}radyrhizobium strains that persist in soils of {W}estern {A}ustralia and {S}outh {A}frica. {T}he selected strains belonged to different randomly amplified polymorphic {DNA} ({RAPD})-{PCR} clusters that were distinct from {RAPD} clusters of applied inoculant strains. {P}hylogenetic analyses were performed with nodullation genes (nod{A}, nod{Z}, nol{L}, noe{I}), housekeeping genes (dna{K}, rec{A}, gln{II}, atp{D}), and 16{S}-23{S} r{RNA} intergenic transcribed spacer sequences. {H}ousekeeping gene phylogenies revealed that all serradella and {L}upinus cosentinii isolates from {W}estern {A}ustralia and three of five {S}outh {A}frican narrow-leaf lapin strains were intermingled with the strains of {B}radyrhizobium canariense, forming a well supported branch on each of the trees. {A}ll nod4 gene sequences of the lupin and serradella bradyrhizobia formed a single branch, referred to as clade {II}, together with the sequences of other lapin and serradella strains. {S}imilar patterns were detected in nod{Z} and nol{L} trees. {I}n contrast, nod,4 sequences of the strains isolated from native {A}ustralian legumes formed either a new branch called clade {IV} or belonged to clade {I} or {III}, whereas their nonsymbiotic genes grouped outside the {B}. canariense branch. {T}hese data suggest that the lupin and serradella strains, including the strains from uncultivated {L}. cosentinii plants, are descendants of strains that most likely were brought from {E}urope accidentally with lupin and serradella seeds. {T}he observed dominance of {B}. canariense strains may be related to this species' adaptation to acid soils common in {W}estern {A}ustralia and {S}outh {A}frica and, presumably, to their intrinsic ability to compete for nodulation of lupins and serradella.},
  keywords = {{AUSTRALIE} ; {AFRIQUE} {DU} {SUD}},
  booktitle = {},
  journal = {{A}pplied and {E}nvironmental {M}icrobiology},
  volume = {71},
  numero = {11},
  pages = {7041--7052},
  ISSN = {0099-2240},
  year = {2005},
  DOI = {10.1128/{AEM}.71.11.7041-7052.2005},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089902},
}