qRT-PCR analysis of <i>OsPCF6</i> and <i>OsTCP21</i> expression patterns under 4°C in wild-type and <i>Osa-miR319b</i>-overexpressing plants.

<p>Expression patterns of the <i>OsPCF6</i> and <i>OsTCP21</i> genes under 4°C in rice seedlings at 0, 1, 3, 6, 9, 12, 24 h after cold stress onset in WT and <i>Osa-miR319b</i>-overexpressing lines. The expression level at 0 h was set at 1.0. Data are the mean ± SE of three biological replicates. Asterisks indicate statistically significant differences (*P<0.05) between wild-type and transgenic lines.