It was noticeable that iturin A showed the strongest elicitation of ACO at 24 h post-treatment (8.9-fold) with only a small decline at 48 h post-treatment (8.3-fold) during fungal infection but a lesser effect on the elicitation of ACO expression was detected in the fengycin-treated tissues (Fig 2H). This evidence concerns the gene KLK15 and fungal infectious disease.