The switch from cross-pollination to self-pollination in Arabidospis thaliana was accompanied by inactivation of the two S-locus "self " recognition genes that determine self-incompatibility. This article reports a structural and functional analysis of an S haplotype belonging to the one group of A. thaliana S haplotypes that had remained largely uncharacterized. The results reveal the various ways the S locus was inactivated during or after the multiple independent switches to self-fertility that occurred in A. thaliana.
Population and Evolutionary Genetics:Molecular characterization and evolution of self- incompatibility genes in Arabidopsis thaliana: The case of the Sc haplotype, pp. 985-994Kathleen G. Dwyer, Martin T. Berger, Rimsha Ahmed, Molly K. Hritzo, Amanda A. McCulloch, Michael J. Price, Nicholas J. Serniak,Leonard T. Walsh, June B. Nasrallah, and Mikhail E. Nasrallah