Research Article

Sublethal Heavy Metal Stress Stimulates Innate Immunity in Tomato

Figure 3

H2O2 detection in tomato leaves by DAB stain, 24 h after CuCl2 treatment. (a) Control; (b) treatment with 1 mM CuCl2; (c) treatment with 2.5 mM CuCl2; and (d) treatment with 5 mM CuCl2.
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