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. 2021 Jun 9;12:683868. doi: 10.3389/fpls.2021.683868

FIGURE 7.

FIGURE 7

Relative expression of genes involved in ALA metabolic pathway. (A) Relative expression of CHLH, encoding Mg-chelatase; (B) relative expression of POR, encoding protochlorophyllide oxidoreductase. Vertical bars represent mean ± SE from three independent replicates and the different letters denote significant differences (p < 0.05). The control group was used as reference at each sampling time point.