Table 1. Species and number of HMGR genes used in this study.
| Lineage | Species | Abbreviation | Number of HMGR genes |
| Green algae | Ostreococcus lucimarinus | Ol | 0 |
| Ostreococcus tauri | Ot | 0 | |
| Micromonas pusilla | Mp | 0 | |
| Chlamydomonas reinhardtii | Cr | 0 | |
| Chlorella variabilis | Cv | 0 | |
| Volvox carteri | Vc | 0 | |
| Mosses | Physcomitrella patens | Pp | 3 |
| Lycophytes | Selaginella moellendorffii | Sm | 1 |
| monocots | Brachypodium distachyon | Bd | 3 |
| Oryza sativa | Os | 3 | |
| Zea mays | Zm | 7 | |
| Sorghum bicolor | Sb | 3 | |
| Eudicots | Vitis vinifera | Vv | 3 |
| Citrus sinensis | Cs | 2 | |
| Gossypium raimondii | Gr | 9 | |
| Carica papaya | Cp | 3 | |
| Brassica rapa | Br | 3 | |
| Arabidopsis thaliana | At | 2 | |
| Glycine max | Gm | 8 | |
| Populus trichocarpa | Pt | 6 | |
| Total | 56 |