Table 1.
Root Hair Number in Wild-Type and Mutant Plants with Ethylene Precursor or Inhibitor Treatment
| Percent of Total Root Hair Cellsa
|
Percent of Root Hair Cells in the N positionb
|
|||||
|---|---|---|---|---|---|---|
| Plant | No Treatment | ACC (5 μM) | AVG (5 μM) | 1-MCP (1 μL/L) | No Treatment | ACC (5 μM) |
| Columbia | 51.1 ± 3.3 | 65.9 ± 5.8 | 1.3 ± 2.3 | 44.0 ± 4.2 | 1.1 ± 3.3 | 15.9 ± 5.8 |
| etr1-1 | 45.8 ± 6.7 | 48.1 ± 3.7 | 0 ± 0 | 43.0 ± 2.7 | 2.7 ± 3.3 | 2.5 ± 4.6 |
| etr2 | 51.3 ± 2.3 | 51.5 ± 3.4 | 0.6 ± 1.8 | 48.3 ± 2.5 | 1.3 ± 2.3 | 1.5 ± 3.4 |
| ers1 | 55.4 ± 6.2 | 52.5 ± 4.2 | 0.6 ± 1.8 | 49.5 ± 2.7 | 5.4 ± 6.2 | 2.5 ± 4.2 |
| ers2-1 | 50.0 ± 3.0 | 55.0 ± 8.2 | 0 ± 0 | 44.1 ± 3.8 | 0.8 ± 1.9 | 6.4 ± 8.5 |
| ein4 | 50.4 ± 1.4 | 57.2 ± 8.7 | 0 ± 0 | 42.3 ± 3.5 | 0.4 ± 1.4 | 7.2 ± 8.7 |
| ein2-1 | 48.8 ± 3.8 | 45.8 ± 2.0 | 0 ± 0 | N.D.c | 2.5 ± 3.4 | 0 ± 0 |
| ctr1-1 | 65.0 ± 6.4 | N.D. | 0 ± 0 | N.D. | 15.0 ± 6.4 | N.D. |
| eto2 | 63.8 ± 4.8 | N.D. | 0 ± 0 | N.D. | 13.8 ± 4.8 | N.D. |
| etr1-7 | 50.7 ± 5.1 | N.D. | N.D. | N.D. | 0.7 ± 5.1 | N.D. |
| rhd6 | 0 ± 0 | 37.6 ± 13.9 | N.D. | N.D. | 0 ± 0 | 3.7 ± 6.6 |
Values shown are means ± sd (n = 140 to 260).
a
Percentage of root hair–bearing epidermal cells among total epidermal cells counted, including cells in both the H and N positions.
b
Percentage of root hair–bearing epidermal cells at the N position among total epidermal cells counted.
c
N.D., not determined.