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. 2016 Apr 11;7:468. doi: 10.3389/fpls.2016.00468

FIGURE 4.

FIGURE 4

Effect of different treatments of MJ and arsenic (As) on (A) secondary metabolites activities and (B) related gene expression of phenylalanine ammonia-lyase (PAL), polyphenol peroxidase (PPO), and cinnamyl alcohol dehydrogenase (CAD) in two B. napus cultivars. Vertical bars represent the mean ± SE. Different letters indicate statistically significant differences (P ≤ 0.05) by applying Duncan’s multiple range test.