First-strand cDNAs were synthesized using the Prime Scriptâ„¢ RT Reagent Kit with gDNA Eraser (Takara, Kyoto, Japan). Semi-quantitative PCR reactions were performed using 2xTaq Plus Master Mix (Dye Plus) (Vazyme, Nanjing, China). The PCR conditions were as described previously [6 (link)]. Three biological repetitions were performed. The specific primers for the selected genes and the internal control (Gossypium hirsutum polyubiquitin protein gene, Gbp) are listed in Table S1.
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