Table 1. Photosynthetic and hydraulic characteristics of WT, AQP1, AQP1xHK4 and HK4 plants.
| WT | AQP1 | AQP1xHK4 | HK4 | |
| L r (gH2O s−1 MPa−1 gDW−1) | 0.00319±0.0003 (7) a | 0.00269±0.0005 (7) ab | 0.00201±0.0004 (10) b | 0.00178±0.00008 (6) b |
| K sx (gH2O s−1 m−1 MPa−1) | 1501.48±167.7 (7) a | 1081.73±196.2 (7) a | 381.61±36.6 (5) b | 274.25±16.8 (6) b |
| A N (µmol CO2 m−2 s−1) | 28.189±0.68 (18) a | 27.580±0.60 (20) a | 28.073±0.49 (15) a | 20.831±1.34 (13) b |
| g s (mol H2O m−2 s−1) | 0.702±0.04 (18) a | 0.637±0.04 (20) ab | 0.697±0.03 (15) a | 0.525±0.06 (13) b |
| g m (mol CO2 m−2 s−1) | 0.248±0.019 (18) a | 0.232±0.014 (20) ab | 0.2004±0.007 (15) b | 0.148±0.015 (13) c |
| C i (µmol CO2 mol−1) | 312.5±2.67 (18) a | 305.1±4.39 (20) a | 313.27±2.39 (15) a | 311.29±5.53 (13) a |
| C c (µmol CO2 mol−1) | 185.6±6.27 (18) a | 183.8±6.34 (20) a | 173.9±3.09 (15) a | 154.9±6.26 (13) b |
| J (µmol m−2 s−1) | 233.3±3.19 (18) b | 238.8±3.5 (20) ab | 247.7±2.16 (15) a | 204.05±6.22 (13) c |
L r, root hydraulic conductance; K sx, xylem-specific stem hydraulic conductivity; A N, net photosynthesis; g s, stomatal conductance; g m, mesophyll CO2 conductance; C i, substomatal CO2 concentration; Cc, Chloroplast CO2 concentration; J, the rate of electron transport. Presented data are means ± SE (n, number of replicates, as indicated in parentheses). Different letters in a row indicate significant differences (t test, P<0.05).