Fig. 6

PvC3H72-overexpression (OE-72) transgenic lines were more tolerant to freezing stress (at − 5 °C). Phenotype of OE-72 and WT plants under control condition (a) or after freezing treatment (b). c Survival rates after freezing treatments. d Number of newly emerged tillers after recovery. All experiments were repeated three times. Letters above bars indicate significant difference at P < 0.05 (n = 9 replicates)