Bacteriostatic and bactericidal effects of RPMs towards several plant pathogenic bacteria.
A. Growth inhibition activity (minimal inhibitory concentration, MIC) of FK‐20 and FdK‐20 RPMs towards different bacteria after 24 h incubation at 28°C: Ssc, Streptomyces scabies Av; Xcc, Xanthomonas campestris pv. campestris
ATCC 33913; Xp, Xanthomonas perforans 97‐2; Cmm, Clavibacter michiganensis subsp. michiganensis
NCPPB 382; Pst, Pseudomonas syringae pv. tomato
DC3000; Ac
AAC001, Acidovorax citrulli
AAC00‐1; and Ac M6, A. citrulli M6.
B. Bactericidal effect (minimal bactericidal concentration, MBC) of FK‐20 and FdK‐20 RPMs towards Xcc
ATCC 33913 and X. perforans 97‐2 after 24 h incubation at 28°C. The highest concentration tested was 200 μg ml−1; therefore, values ~200 μg ml−1 mean that no inhibitory effect was detected under tested conditions. Data represent averages and standard errors of at least three independent experiments with three replicates for each peptide/bacterial strain combination.