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Phylogenetic analysis of rbcL and PPDK.The phylogenetic tree was constructed by the neighbor-joining (NJ) method using Mega (version 4.0). Bootstrap analysis was computed with 1000 replicates and bootstrap values below 50% were omitted. C3–C4 refers to species that possessed the genes for both C3 and C4 photosynthesis with C3 photosynthesis being the primary pathway. (A) Phylogenetic analysis of rbcL. GenBank accession numbers of the sequences used for constructing the phylogenetic tree of rbcL were as follows: Ulva prolifera (FJ042888), Thalassiosira pseudonana (YP_874498), Flaveria bidentis (ADW80649), Flaveria trinervia (ADW80661), Flaveria pringlei (ADW80648), Zea mays (NP_043033), Sorghum bicolor (ABK79504), Oryza sativa (CAG34174), Saccharum officinarum (YP_054639), Arabidopsis thaliana (AAB68400), Volvox carteri (ACY06055), Chlamydomonas reinhardtii (ACJ50136), Ostreococcus tauri (YP_717262), Ectocarpus siliculosus (CBH31935), Populus tremula (CAD12560), and Eleocharis vivipara (CAQ53780). (B) Phylogenetic analysis of PPDK. GenBank accession numbers of the sequences used for constructing the phylogenetic tree of PPDK were as follows: Ulva prolifera (JN936854), Thalassiosira pseudonana (XP_002290738), Flaveria bidentis (AAA86941), Flaveria trinervia (CAA55703), Flaveria pringlei (CAA53223), Zea mays (ADC32810), Sorghum bicolor (AAP23874), Oryza sativa (CAA06247), Saccharum officinarum (AAF06668), Arabidopsis thaliana (AEE83621), Volvox carteri (XP_002955807), Chlamydomonas reinhardtii (XP_001702572), Ostreococcus tauri (XP_003075283), Ectocarpus siliculosus (CBN74442), Populus tremula (CAX83740), and Eleocharis vivipara (BAA21654).

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