Table 2.
Classification of All Homeobox Proteins Retrieved from Plant Genomes
| Eudicots |
Monocots |
Bryophyta | Lycopodiophyta | Unicellular Green Algae |
Red Algae | ||||||
| Super Class | Class | At | Poplar | Rice | Maize | Moss | Sm | Cr | Ol | Ot | Cm |
| HD-ZIP | HD-ZIP I | 17 | 22 | 14 | 24 | 17 | 4 | — | — | — | — |
| HD-ZIP II | 10 | 16 | 14 (2) | 17 | 7 | 2 | — | — | — | — | |
| HD-ZIP III | 5 | 8 | 7 (3) | 8 | 5 | 3 | — | — | — | — | |
| HD-ZIP IV | 16 | 15 | 12 | 21 | 4 | 4 | — | — | — | — | |
| PLINC | 14 | 17 | 11 | 17 | 11 (1) | 5 | — | — | — | — | |
| WOX | 16 | 19 | 15 | 16 | 3 | 6 | — | 1 | 1 | — | |
| TALE | KNOX | 8 | 15 | 12 (1) | 13 | 5 | 5 (1) | 1 | 1 | 1 | 1 |
| BEL | 13 | 19 | 14 | 17 (1) | 4 | 2 | 1 | 2 | 2 | 1 | |
| Uncharacterized | — | — | — | — | — | 6 | 1 | — | — | 2 | |
| DDT | 4 | 7 | 3 (1) | 4 | 3 | 2 | 1 | 1 | 1 | — | |
| PHD | 2 | 4 | 2 | 5 | 2 | 1 | — | — | — | — | |
| NDX | 1 | 2 | 1 | 1 | 2 | 1 | — | — | — | — | |
| LD | 1 | 2 | 1 | 1 | 1 | 1 | — | — | — | — | |
| PINTOX | 1 | 1 (1) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | |
| SAWADEE | 2 | 1 | 3 | 3 | 1 | 2 | — | — | — | — | |
| Uncharacterized | — | — | — | — | — | — | — | 1 | 1 | 2 | |
| Total | 110 | 148 (1) | 110 (7) | 148 (1) | 66 (1) | 45 (1) | 5 | 7 | 7 | 6 | |
NOTE.—Number of pseudogenes retrieved from each species is indicated in parentheses. At, Arabidopsis thaliana; Sm, Selaginella moellendorffii; Cr, Chlamydomonas reinhardtii; Ol, Ostreococcus lucimarinus; Ot, Ostreococcus tauri; Cm, Cyanodioschyzon merolae.