Quantitative RT-PCR (qPCR) was performed as described previously [29 ]. The primer pairs used for the HbTPS and HbSnRK1 family genes, and SnRK1 marker genes were as listed in Table S7. The reaction was performed using the Light Cycler 2.0 system (Roche Diagnostics, Penzberg, Germany) with the SYBR Green premix kit (TaKaRa) according to the manufacturer’s instructions. The efficiency of each primer pair was evaluated and found to be between 1.844 and 1.997. For internal controls, YLS8 was used in the analysis of gene expression in the latex following the tapping treatment [65 (link)].
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