Figure 2.

Disease symptoms and bacterial growth in leaves of wild‐type (WT) AC⁺ and hp1 mutant plants infected with Agrobacterium tumefaciens GV2260 or EHA105. Six‐week‐old WT AC⁺ and hp1 mutant plants were vacuum infiltrated with a suspension of A. tumefaciens GV2260 or EHA105, and maintained under light conditions of 200 lx 16 h/dark 8 h. (A) WT AC⁺ and hp1 mutant plants were vacuum infiltrated with a suspension of A. tumefaciens GV2260 [optical density at 600 nm (OD₆₀₀) = 0.1]. Photographs were taken 4 days after infection. (B) WT AC⁺ and hp1 mutant plants were vacuum infiltrated with a suspension of A. tumefaciens GV2260 (OD₆₀₀ = 0.00001). (C) WT AC⁺ and hp1 mutant plants were vacuum infiltrated with a suspension of A. tumefaciens EHA105 (OD₆₀₀ = 0.00001). Bacterial growth was determined at 0, 2 and 4 days post‐inoculation (dpi). Each data point consists of at least six samples. Error bars indicate standard deviation. The statistical significance of the difference was confirmed by Student's t‐test (**P < 0.01). Similar results were obtained in at least two independent experiments.