Tang, CL and Toomajian, C and Sherman-Broyles, S and Plagnol, V and Guo, YL and Hu, TT and Clark, RM and Nasrallah, JB and Weigel, D and Nordborg, M (2007) The evolution of selfing in Arabidopsis thaliana. SCIENCE , 317 (5841) 1070 - 1072. 10.1126/science.1143153.
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Unlike most of its close relatives, Arabidopsis thaliana is capable of self-pollination. In other members of the mustard family, outcrossing is ensured by the complex self-incompatibility (S) locus, which harbors multiple diverged specificity haplotypes that effectively prevent selfing. We investigated the role of the S locus in the evolution of and transition to selfing in A. thaliana. We found that the S locus of A. thaliana harbored considerable diversity, which is an apparent remnant of polymorphism in the outcrossing ancestor. Thus, the fixation of a single inactivated S-locus allele cannot have been a key step in the transition to selfing. An analysis of the genome-wide pattern of linkage disequilibrium suggests that selfing most likely evolved roughly a million years ago or more.
|Title:||The evolution of selfing in Arabidopsis thaliana|
|Keywords:||S-LOCUS, INCOMPATIBILITY, DIVERSITY|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Life Sciences > Biosciences (Division of) > Genetics, Evolution and Environment > UCL Genetics Institute|
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