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. 2025 Jul 23;16:1628555. doi: 10.3389/fpls.2025.1628555

Figure 3.

Two line graphs show the effects of different treatments on lignin content and peroxidase activity over ten days. (A) Lignin content graph has four lines: control (black), SCN inoculated (blue), CPT coating (red), and CPT coating with SCN inoculated (pink), showing variations with clustering around 300 mg per g. (B) Peroxidase activity graph depicts similar groupings with peaks at 9 dpi, peaking around 15000 U g⁻¹.

Physiological index detection of soybean roots under CPT treatment and/or SCN infection. (A) Lignin content and (B) POD activity in different treatments. The control group received no treatment. The SCN-inoculated group was infected with soybean cyst nematode (SCN) at the second leaf stage. The CPT-coating group was treated with CPT. The CPT-coating and SCN-inoculated group was infected with SCN at the second leaf stage after CPT treatment. Data are presented as means ± SD. Asterisks indicate statistical significance: *(p < 0.05), **(p < 0.01), ***(p < 0.001), and ****(p < 0.0001).