Tanja Slotte

TL;DR: The transition to selfing may be typified by parallel shifts in gene expression, along with a measurable reduction of purifying selection, similar to that seen in Arabidopsis, which self fertilization evolved about 1 million years ago.

TL;DR: It is concluded that while some aspects of the hypothesis of selfing as a dead end are supported by theory and empirical results, the evolutionary and ecological mechanisms remain unclear.

TL;DR: The hypothesis that selfing was favored during colonization as new habitats emerged after the last glaciation and the expansion of agriculture is supported and suggests that natural selection for reproductive assurance can lead to major morphological evolution and speciation on relatively short evolutionary timescales.

TL;DR: Comparison of nucleotide diversity patterns of the 2 species found that C. rubella has only 1 or 2 alleles at most loci, suggesting that it originated through an extreme population bottleneck, and suggests that this species will be an interesting model to understand divergence and adaptation, starting from very limited standing genetic variation.

TL;DR: It is implied that both positive and purifying selection are more effective in C. grandiflora than in A. thaliana, consistent with the contrasting demographic history and effective population sizes of these species.