Table 1.
Sums of 13CO2 respiration (∫ R) derived from different 13C-labeled substrates.
| Species | Label | ∫ R-light | ∫ R-dark |
|---|---|---|---|
| Halimium halimifolium | 13C-1 Malate | 0.06 ± 0.02 | 0.22 ± 0.08 |
| 13C-4 Malate | 0.05 ± 0.02 | 0.33 ± 0.11 | |
| 13C-1 Pyruvate | 0.37 ± 0.10 | 0.71 ± 0.24 | |
| 13C-2 Pyruvate | 0.03 ± 0.01 | 0.08 ± 0.02 | |
| Oxalis triangularis | 13C-1 Malate | 0.05 ± 0.01 | 0.17 ± 0.05 |
| 13C-4 Malate | 0.08 ± 0.03 | 0.38 ± 0.19 | |
| 13C-1 Pyruvate | 0.16 ± 0.06 | 0.23 ± 0.07 | |
| 13C-2 Pyruvate | 0.03 ± 0.00 | 0.02 ± 0.00 |
∫ R values from different 13C-labeled malate and pyruvate substrates were calculated for light (∫ R-light, μmol 13CO2 m-2 s-1) and dark periods (∫ R-dark, μmol 13CO2 m-2 s-1) in Halimium halimifolium and Oxalis triangularis plants. Means and SE are given (n = 3–5 individuals). Please refer to Table 2 for statistical analyses.