Table 1.
Change in the proportion (%) of the heavy isotopologue (13C) molecules with respect to the parent monoterpenes, sesquiterpenes and diterpenes for the labelling experiments.
| Compound | Theoretical 1st isotopologue natural abundance (%) | Measured 1st isotopologue natural abundance (%) | 1st isotopologue abundance 30 mins after labelling (%) | Sample number |
|---|---|---|---|---|
| Monoterpenes | 9.7 | 9.1 ± 0.6 | 21.2 ± 8.3 | 8 |
| Sesquiterpenes | 13.8 | 13.3 ± 1.5 | 24.6 ± 10.5 | 5 |
| Diterpenes | 17.5 | 16.3 ± 0.1 | 16.8 ± 0.7 | 6 |
Ten different (only detectable isotopic signals for each isoprenoid are show H. halimifolium individuals were used for this experiment).