FIGURE 7.

Bacterial membrane permeabilization induced by armadillidin H. (A) B. megaterium F04 and (B) P. syringae DC3000. Bacteria (5.10⁷ CFU/ml) were treated with armadillidin H and incubated for 15 min at 28 or 37°C depending on the tested strain. Controls were run without peptide and with 0.1% Triton X-100 for maximal lysis activity. Results of permeabilizaton were expressed as (% permeabilization) = (number of IP⁺ bacteria/total number of bacteria) × 100 and bacterial viability was expressed as log(CFU/ml). Three experiments were carried out in triplicates and the results are expressed as means. Bar scales indicate standard deviation.