Fig. 4From: Biosynthesized silver nanoparticles inhibit Pseudomonas syringae pv. tabaci by directly destroying bacteria and inducing plant resistance in Nicotiana benthamianaBiosynthesized AgNPs induce antioxidant activity in Nicotiana benthamiana. a–d Activities of catalase (a), polyphenol oxidase (b), superoxide dismutase (c), and peroxidase (d) were measured after biosynthesized AgNPs treatment (1.2 μg/mL) for 3 times (once per day). e DAB staining was used to detect the production of H2O2 in N. benthamiana after biosynthesized AgNPs treatment (1.2 μg/mL) for 3 times (once per day). Mock, negative control (treated with sterilized distilled water). The data are mean ± standard error (n = 3). Data analysis was performed using Student’s t test (∗0.01 < P < 0.05)Back to article page