A, Phylogenetic analyses of AUX1-LAX orthologs in land plants and Chlorella species. B, Alignment of AUX1/LAX proteins, highlighting the conserved residues in C. vulgaris (Cvu) and C. variabilis (Cva). Asterisks indicate residues conserved in at least one putative ortholog (green) or not conserved (red). Residue colors are according to the rasmol color scheme, which is consistent with traditional amino acid properties. At, Arabidopsis; Cg, Casuarina glauca; Pp, P. patens; Sm, S. moellendorffii. [See online article for color version of this figure.]