Table I.
Frequency of root hair bursting in response to EGTA and La3+
Root hairs were treated as indicated, and percentages of burst hairs in the apical 400-μm region of the root hair zone were scored after 10 min. Data are from at least six different roots for each treatment.
| Treatment | No. of Root Hairs Analyzed | Percentage of Burst Root Hairs |
|---|---|---|
| 4 mm EGTA | 119 | 98.5 |
| 1 mm La3+ | 87 | 96.0 |
| 0.2 mm La3+, apical 200 μma | 54 | 86.2 |
| 0.2 mm La3+, apical 400 μma | 117 | 65.4 |
a
Root hairs were monitored in either the apical 200- or 400-μm region of the root hair zone.