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

FIGURE 1.

Thirteen bar graphs display growth inhibition halo diameters for various strains of Gram-positive, Gram-negative bacteria, and yeast on different sugars, comparing two plug transference conditions, with statistical differences indicated by letter groupings.

Effect of carbon source in in vitro antagonistic activity of bacterial and yeast microorganisms against E. amylovora by an agar plug assay. Antagonist plugs (10 mm diameter) were cut from 5-days-old cultures grown at room temperature (22°C) either on LA (yellow) or minimal AB agar, both supplemented with either 0.4% glucose (Glu), sucrose (Suc), glycerol (Gly), sorbitol (Sor) or fructose (Fru) (gray) and transferred to AB agar plates containing the same carbon source and freshly seeded with E. amylovora. Each graph shows the antagonist activity of one strain, and bars represent mean values ± standard deviation of three plates per strain and condition. Different letters indicate significant differences between the compared groups by Tukey’s tests (α = 0.05). (A) Microbacterium sp. 2173; (B) Microbacterium sp. ABR10; (C) Curtobacterium sp. ABR8; (D) Priestia sp. ABR6; (E) Bacillus sp. 2175; (F) Bacillus sp. BWC; (G) Rahnella sp. EL51; (H) Erwinia sp. 2186; (I) Pantoea sp. ABR1b; (J) Pantoea sp. ABR1s; (K) Pseudomonas sp. ABR5; (L) Pseudomonas sp. 2180; (M) Rhodotorula sp. 2176.