Figure 8.

Schematic Diagram of the Evolutionary Path of Cladodes in the Genus Asparagus.

Simplified phylogenetic tree (Fukuda et al., 2005) with illustrations of shoots and expression patterns in transverse section of cladodes indicate evolutionary processes of acquisition and diversification of cladodes, respectively. The expression patterns of orthologs of HD-ZIPIII (pink) and miR166 (blue) in a transverse section of cladodes and expression patterns of class I KNOX (orange) and AS1 (green) in shoots. Boxes indicate presumed key events during evolution. See text for details.