Table 1.
Stomatal conductance (gs), rates of stomatal closure and maximum rates of photosynthesis (Asat) in response to 15 min at a PPFD of 1000 µmol m−2 s−1. Values are the means ± s.d. (n = 3). Those values marked * are significantly different from their control genotypes at p ≤ 0.05 (Student's t-test).
| genotype | gs (0 min) (mmol m−2 s−1) | gs (15 min) (mmol m−2 s−1) | rate of change of gs (mmol m−2 s−1) | Asat (15 min) (µmol m−2 s−1) |
|---|---|---|---|---|
| Col-0 | 207.5 ± 77.0 | 308.0 ± 92.2 | 6.7 ± 1.1 | 11.8 ± 0.4 |
| Ler | 309.1 ± 64.2 | 431.5 ± 96.6 | 8.2 ± 2.7 | 15.3 ± 1.5 |
| abi2-1 | 75.4 ± 15.0* | 102.3 ± 23.2* | 1.8 ± 0.5* | 7.1 ± 1.1* |
| abi2-2 | 153.6 ± 22.3 | 209.3 ± 38.8 | 3.7 ± 1.4* | 10 ± 1.4 |
| abi1-1 | 202.2 ± 86.0 | 288.7 ± 136.2 | 5.8 ± 3.6 | 12.1 ± 3.1 |
| abi1-2 | 533 ± 251.6 | 642.9 ± 253.9 | 7.3 ± 0.5 | 21.1 ± 4.5 |
| hab1-1 | 91.7 ± 26.8 | 109 ± 88.8 | 1.2 ± 4.2 | 8.7 ± 1.5 |
| abi2-2/abi1-2/ hab1-1 | 32.2 ± 4.4 | 44.0 ± 2.8* | 0.8 ± 0.1* | 4.5 ± 2.2* |
| pp2ca1/abi1-2/ hab1-1 | 29.8 ± 4.8 | 43.7 ± 8.9* | 0.9 ± 0.4* | 5.3 ± 1.6* |
| ost1-1 | 214.8 ± 43.0 | 243.9 ± 38.3 | 1.9 ± 0.6* | 10.1 ± 1.3* |
| rbohD/rbohF | 60.8 ± 14.6* | 125.2 ± 33.8* | 4.3 ± 1.3* | 7.3 ± 0.2* |
| gpa1-4 | 82.1 ± 15.9 | 111.8 ± 13.4 | 2.0 ± 0.9* | 11.1 ± 2.4 |