Effect of <i>OsMADS25</i> overexpression and its down-regulation by RNAi on rice root development.

<p>The root phenotype of 7 d-old wild type and transgenic rice seedlings grown in 0.2 mM nitrate or zero nitrate and 8 d-old seedlings grown in 10 mM nitrate was determined. OEOsMADS25-3 and OEOsMADS25-18 are two overexpressing lines and RiOsMADS25-3 and RiOsMADS25-4 are two RNAi lines. Errors indicate standard deviation (SD; n = 15–30). AR, adventitious root; LR, lateral root; PR, primary root; LR/PR length, LR length per unit PR length. A Student’s t-test was employed to calculate the significant difference between treatments at the probability of 5% (* p< 0.05) or 1% (**, P< 0.01).