Fig. 3. Protein orthology comparison among genomes of eight Citrinae species.

A Clusters of orthologous and paralogous gene families in the eight Citrinae species identified by OrthoMCL. B Phylogenetic status of P. trifoliata in the Citrinae group. A maximum-likelihood phylogenetic tree was constructed by using all single-copy orthologs shared by the eight Citrinae species. The numbers near tree nodes are bootstrap values. Divergence times are indicated by bars below the phylogenetic tree scaled as million years ago (Ma). C Overlap of gene families in P. trifoliata and three widely cultivated citrus species