CRISPR/Cas9-Mediated Mutagenesis of in .

The small crucifer bears complex leaves divided into leaflets. This is in contrast to its relative, the reference plant , which has simple leaves. Comparative studies between these species provide attractive opportunities to study the diversification of form. Here, we report on the implementation of the CRISPR/Cas9 genome editing methodology in and with it the generation of novel alleles in the gene, which was previously shown to play a major role in the diversification of form between the two species. Thus, genome editing can now be deployed in , thereby increasing its versatility as a model system to study gene function and evolution.