Figure 2From: Comparative genomic analysis of C4 photosynthetic pathway evolution in grassesPhylogeny of C4 enzyme genes and their isoforms in sorghum, rice, maize and Arabidopsis. Thick branches show C4 enzyme genes. Bootstrap percentage values are shown as integers; Ka/Ks ratios are shown as numbers with fractions, or underlined when >1. In the gene IDs, Sb indicates Sorghum bicolor, Os indicates Oryza sativa, Zm indicates Zea mays, and At indicates Arabidopsis thaliana. (a) PEPC; (b) PPCK; (c) NADP-MDH; (d) NADP-ME; (e) PPDK; (f) PPDK-RP; (g) CA.Back to article page