Wood vinegar alleviates photosynthetic inhibition and oxidative damage caused by Pseudomonas syringae pv. tabaci (Pst) infection in tobacco leaves

Figures & data

Figure 1. Effects of WV on phenotype (a), Chl a content (b), Chl b content (c), Chl a/b (d), Chl a + b content (e), Car content (f) and Car/Chl a + b (g) of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).

Figure 2. Effects of WV on the OJIP curve (a), MR₈₂₀ curve (b), F_v/F_m (c), PI_ABS (d), and ΔI/I_o (e) of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).

Figure 3. Effects of WV on the V_O-P (a), ΔV_O-P (b), V_O-J (c), ΔV_O-J (d), V_O-K (e), ΔV_O-K (f), V_J (g), V_K (h) and V_L (i) of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).

Figure 4. Effects of WV on the light energy absorption and utilization parameters of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).

Figure 5. Effects of WV on the generation rate of ${\mathrm{O}}_2^{-}$ (a), H₂O₂ content (b), CAT activities (c), SOD activities (d), POD activities (e), APX activities (f) and GPX activities (g) of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).

Figure 6. Effects of WV on the key gene expression of photosynthetic and antioxidant enzymes of tobacco leaves infected by Pst. Note: The data in the figure are from three biological repeats (n = 3), and represent means ± standard error (SE). Significant differences were expressed by different letters (P < 0.05).