Table 1.
Spatial distribution of cortical cell length in Clipper and Sahara roots. The effect of 48h treatment with 100mM NaCl on the spatial distribution of cortical cell length in the apical 5mm of Clipper and Sahara seminal roots was examined compared with untreated roots.
| Genotype | Clipper | Sahara | ||
|---|---|---|---|---|
| Treatment | Control | Salt | Control | Salt |
| Region 1 (mm) | 0–1.0 | 0–1.0 | 0–1.0 | 0–0.5 |
| Region 2 (mm) | 1.0 – 3.5 | 1.0–3.0 | 1.0–3.0 | 0.5–2.5 |
| Region 3 (mm) | 3.5–5.5 | 3.0 – 5.0 | 3.0–5.0 | 2.5–4.5 |
| Final cortical cell length (μm) | 141.9±8.5a | 143.4±11.6a | 108.8±3.9a | 220.5±15.0b |
The length of each region was defined by the following: region 1, root cap and cortical cells dividing; region 2, cortical cells expanding; and region 3, cortical cells ceased expansion and the length became uniform. The final cortical cell length shown is the mean ± SEM (n = 8–10). Different superscript letters indicate significance between the salt treatment relative to control and between genotypes (two-way ANOVA, Bonferroni post-hoc test, P < 0.001).