The RT-PCR was performed using PrimerSTAR MaxDNA Polymerase (TaKaRa, Shiga, Japan), and the appropriate annealing temperature for PCR according to the properties of primer pairs for different genes. The number of amplification reaction cycles in this study was 30. The RT-PCR experiment for each gene was conducted with 3 biological replicates. The PCR products were determined using electrophoresis on the 1% agarose gels. Specific primers for different OsSR genes and the control gene OsActin used for RT-PCR are listed in
For the qRT-PCR experiment, SYBR Green qPCR Master Mix (TOROIVD) was used, and the experiment was conducted on LightCycler 480 II (Roche, South San Francisco, CA, USA). The data was analyzed as previously described using OsActin as the internal standard (Livak & Schmittgen, 2001 (link)). The qRT-PCR experiment was carried out using 3 biological replicates, and 3 technical replicates were performed for each biological replicate. The qRT-PCR data was calculated using 2−ΔΔCT method and Student’s t-test. The primer sequences for qRT-PCR are listed in