Table 1. Cell pressure probe measurements of maize root cortex cells in the wild type, PIP2;5 OE lines, and pip2;5 KO.
Root cortical cells from the third to sixth cell layer were punctured in the morning. The values are means ± se (n = 10–15 cells from three to five plants). Significant difference (P < 0.05) among the treatments is indicated by lowercase letters. WT, wild type.
| Line | Turgor Pressure (MPa) | T1/2 (s) | Cell Volume (10−14 m3) | Cell Surface Area (10−8 m2) | εmeasured (MPa) | εcorrected (MPa) |
|---|---|---|---|---|---|---|
| WT-B104 | 0.37 ± 0.01a | 1.70 ± 0.14a | 8.38 ± 1.63a | 1.40 ± 0.17a | 1.24 ± 0.20a | 1.80 ± 0.30a |
| PIP2;5 OE-4 | 0.35 ± 0.01a | 0.89 ± 0.07b | 6.16 ± 1.07a | 1.17 ± 0.12a | 0.89 ± 0.06a | 1.74 ± 0.09a |
| WT-B104 | 0.40 ± 0.01a | 1.75 ± 0.15a | 6.46 ± 0.81b | 1.11 ± 0.09b | 0.98 ± 0.12a | 1.43 ± 0.16b |
| PIP2;5 OE-13 | 0.42 ± 0.01a | 0.97 ± 0.08b | 9.47 ± 0.94a | 1.41 ± 0.10a | 1.49 ± 0.23a | 2.74 ± 0.35a |
| WT-W22 | 0.37 ± 0.01a | 0.90 ± 0.08b | 9.60 ± 0.88a | 1.35 ± 0.09a | 1.38 ± 0.18a | 2.74 ± 0.38a |
| pip2;5 KO | 0.34 ± 0.02a | 2.56 ± 0.11a | 8.29 ± 0.46a | 1.21 ± 0.05a | 1.61 ± 0.12a | 2.14 ± 0.19a |