Changes in antioxidant enzymes, hydrogen peroxide, salicylic acid and oxidative stress in compatible and incompatible host-tobamovirus interaction

Figures & data

Figure 1.  (a–c) Changes in peroxidase, catalase and hydrogen peroxide in tomato seedlings inoculated with TMV and ToMV. The data represents mean of three replicates±SE.

Figure 2.  (a–c) Changes in peroxidase, catalase and hydrogen peroxide in bell pepper seedlings inoculated with TMV and ToMV. The data represents mean of three replicates±SE.

Figure 3.  (a–c) Changes in peroxidase, catalase and hydrogen peroxide in N. glutinosa seedlings inoculated with TMV and ToMV. The data represents mean of three replicates±SE.

Figure 4.  (a–c) Changes in peroxidase, catalase and hydrogen peroxide in N. tabacum Cv. xanthi seedlings inoculated with TMV and ToMV. The data represents mean of three replicates±SE.

Figure 5.  Localization of hydrogen peroxide in tissues of tomato and bell pepper leaves on inoculation with TMV and ToMV at 24 hpi.

Figure 6.  Localization of hydrogen peroxide in tissues of Nicotiana glutinosa and Nicotiana tabacum cv. xanthi leaves on inoculation with TMV and ToMV at 24 hpi.

Table 1. Quantitative assessment of hydrogen peroxide (H₂O₂) localization in the tissues of tomato, bell pepper and N. glutinosa and N. tabacum cv. xanthi seedlings inoculated with TMV and ToMV at 24 hpi.

	% Cells stained in virus inoculated seedlings
Plant tested	TMV	ToMV	Control
Tomato	59±0.97^c	20±0.29^d	10±0.59^c
Bell pepper	19±0.49^d	52±0.53^c	13±0.97^b
Nicotiana glutinosa	71±0.92^a	68±0.98^a	19±0.37^a
N. tabacum cv. xanthi	64±0.87^b	62±0.27^b	18±0.54^a
The values were the means of three replicates of three different experiments. For each experiment and type of data, means in the same column followed by the same letter are not significantly different according to Duncan's Multiple Range test (p≤0.05).

Figure 7.  (a–c) Changes in endogenous SA, lipid peroxidation and protein oxidation levels in compatible and incompatible hosts at 24 hpi of tobamoviruses. The data represents mean of three replicates±SE.