@article{fdi:010053390,
  title = {{P}atterns of sequence divergence and evolution of the {S}-1 orthologous regions between {A}sian and {A}frican cultivated rice species},
  author = {{G}uyot, {R}omain and {G}aravito, {A}ndrea and {G}avory, {F}. and {S}amain, {S}. and {T}ohme, {J}. and {G}hesqui{\`e}re, {A}lain and {L}orieux, {M}athias},
  editor = {},
  language = {{ENG}},
  abstract = {{A} strong postzygotic reproductive barrier separates the recently diverged {A}sian and {A}frican cultivated rice species, {O}ryza sativa and {O}. glaberrima. {R}ecently a model of genetic incompatibilities between three adjacent loci: {S}(1){A}, {S}-1 and {S}1{B} (called together the {S}-1 regions) interacting epistatically, was postulated to cause the allelic elimination of female gametes in interspecific hybrids. {T}wo candidate factors for the {S}-1 locus (including a putative {F}-box gene) were proposed, but candidates for {S}(1){A} and {S}1{B} remained undetermined. {H}ere, to better understand the basis of the evolution of regions involved in reproductive isolation, we studied the genic and structural changes accumulated in the {S}-1 regions between orthologous sequences. {F}irst, we established an 813 kb genomic sequence in {O}. glaberrima, covering completely the {S}(1){A}, {S}-1 and the majority of the {S}1{B} regions, and compared it with the orthologous regions of {O}. sativa. {A}n overall strong structural conservation was observed, with the exception of three isolated regions of disturbed collinearity: (1) a local invasion of transposable elements around a putative {F}-box gene within {S}-1, (2) the multiple duplication and subsequent divergence of the same {F}-box gene within {S}(1){A}, (3) an interspecific chromosomal inversion in {S}1{B}, which restricts recombination in our {O}. sativa x {O}. glaberrima crosses. {B}eside these few structural variations, a uniform conservative pattern of coding sequence divergence was found all along the {S}-1 regions. {H}ence, the {S}-1 regions have undergone no drastic variation in their recent divergence and evolution between {O}. sativa and {O}. glaberrima, suggesting that a small accumulation of genic changes, following a {B}ateson-{D}obzhansky-{M}uller ({BDM}) model, might be involved in the establishment of the sterility barrier. {I}n this context, genetic incompatibilities involving the duplicated {F}-box genes as putative candidates, and a possible strengthening step involving the chromosomal inversion might participate to the reproductive barrier between {A}sian and {A}frican rice species.},
  keywords = {},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {6},
  numero = {3},
  pages = {e17726},
  ISSN = {1932-6203},
  year = {2011},
  DOI = {10.1371/journal.pone.0017726},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053390},
}