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. 2026 Apr 10;17:1816023. doi: 10.3389/fmicb.2026.1816023

FIGURE 3.

Panel A presents a reference visual scale of fruit infection severity from zero to four. Panels B and C show bar graphs comparing severity index across different bacterial strains in co-inoculation and preventive treatment, with statistical significance indicated. Panel D displays a bar chart of the percentage of asymptomatic fruit for each treatment. Panels E and F show comparisons of severity index and percentage of asymptomatic fruit between treatments using bar graphs, with statistical annotations for group differences.

Antagonistic activity of bacterial and yeast isolates against E. amylovora in immature “Bartlett” pears. (A) Severity index scale used for rating fire blight symptoms in pear fruitlets. (B) Co-inoculation treatments. (C) Preventive treatments. Data represents mean values (±standard deviation) from 6 to 7 fruit per isolate. (D) Percentage of asymptomatic fruitlets at 6 dpi. (E,F) Effect of organism type (Gram-positives, G+; Gram-negatives, G–) in mean severity index values (E) and percentage of asymptomatic fruit (F). Each dot is a mean value from 6 to 7 fruits. Asterisks show significant differences between treatments, or G+ and G– organisms: *P ≤ 0.05; ***P = 0.001; ****P ≤ 0.0001; ns, non-significant, P > 0.05. Gram-positive isolates: Microbacterium sp. 2173; Microbacterium sp. ABR10, Priestia sp. ABR6, Curtobacterium sp. ABR8; Bacillus sp. 2175, Bacillus sp. BWC; Gram-negatives: Rahnella sp. EL51, Erwinia sp. 2186; Pantoea sp. ABR1b, Pantoea sp. ABR1s, Pseudomonas sp. ABR5, Pseudomonas sp. 2180; yeast: Rhodotorula sp. 2176.