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. 2013 Jul 26;8(7):e69105. doi: 10.1371/journal.pone.0069105

Figure 6. Effects of cinnamic acid on the lignin monomer composition of soybean roots untreated (C) or treated with 1.0 mM cinnamic acid (CA), 0.1 mM piperonylic acid (PIP) and 1.0 mM cinnamic acid plus 0.1 mM piperonylic acid (CA + PIP).

Figure 6

H, p-hydroxyphenyl; G, guaiacyl; and S, syringyl monomers. Values (n = 4 ± SE) marked with different letters are significantly different (P ≤ 0.05, Scott-Knott test).