Figure 5

Phylogeny and evolution of SRKs in the Brassicaceae. (A) A ML phylogenetic tree of KDs was constructed by including all members of the SD-1b group and 47 full-length SRKs from Brassicaceae species. The aLRT bootstrap (in bold) values of the major internal nodes are indicated by numbers. An orthologous group in the Brassica/Raphanus lineage (indicated by an inverted filled triangle), an orthologous group in the Arabidopsis/Capsella lineage (indicated by a filled triangle), and two orthologous groups in the Brassicaceae (indicated by filled diamonds) are shown. The diamond between brackets indicates the orthologous group with relatively low support value. The names of Brassicaceae species are abbreviated (Ath, Arabidopsis thaliana; Aly, Arabidopsis lyrata; Aha, Arabidopsis halleri; Cru, Capsella rubella; Cgr, Capsella grandiflora; Bol, Brassica oleracea; Bra, Brassica rapa; Bna, Brassica napus; and Rsa, Raphanus sativus). (B) Structural comparison of the A. thaliana and A. lyrata haplotypes Sa and Sb (modified from [36]).