Figure 1.

Screening of auxin mutants for root growth recovery response after cold stress: (A) percentage root growth recovery at 6 h after 12 h of cold stress; (B) percentage root growth recovery at 24 h after 12 h of cold stress. Root growth recovery was calculated against the root growth at 23 °C. Vertical bars represent mean ± S.E. Data are from at least three independent experiments (n = 3 or more) with 8–10 seedlings per treatment. Asterisks denote the statistical significance between control and treatment as judged by the Student’s t-test (* p < 0.05 and *** p < 0.001).