Total RNA of rice protoplasts was extracted using the Omega Plant RNA kit according to the manufacturer's instructions. cDNA was made using the PrimeScript RT reagent Kit with gDNA eraser (Taraka) with 2 μg of total RNA as the template. Quantitative real-time PCR was performed with a Bio-Rad IQ5 system using SYBR to monitor double-stranded DNA products. The gene-specific primers were as follows: OsLhcb1 (Os09g0346500), 5' GGAAGATGGGTTTAGTGCG 3' and 5' GCTAATCAGAATAACACCACGG 3'; OsLhcp (Os01g0600900), 5' TACGAGTATTGGAGAGAGG 3' and 5' TAAGTAGCACGCAGGATT 3'; GADPH (Os03g0129300), 5' GTGGCCAACATTATCAGCAA 3' and 5' GGTCATGGTTCCCTTTACGA 3'; RbcS (Os12g0292400), 5' CCCGGATACTATGACGGTAGG 3' and 5' AACGAAGGCATCAGGGTATG 3'; β-actin (internal control), 5' CCTGACGGAGCGTGGTTAC 3' and 5' CCAGGGCGATGTAGGAAAGC 3'.
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