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. 2020 Dec 1;36(6):608–617. doi: 10.5423/PPJ.OA.08.2020.0162

Fig. 7.

Fig. 7

Control efficacy of 4-hydroxybenzoic acid and vanillic acid on bacterial speck disease on tomato leaves. Ten mM of sucrose (A), Pst DC3000 suspension (5 × 103 cfu/ml) (B), and Pst DC3000 suspension with 2.5 mM of 4-hydroxybenzoic acid (C) and vanillic acid (D) were syringe infiltrated into the abaxial side of tomato leaves. Disease symptoms were observed 7 days after infection.