Biological control of peach fungal pathogens by commercial products and indigenous yeasts.

摘要: The potential use of the commercial biocontrol products Serenade (Bacillus subtilis QST-713) and Trichodex (Trichoderma harzianum Rifai strain T39) to inhibit postharvest pathogenic molds Penicillium crustosum Mucor circinelloides was investigated. Both exhibited antagonistic activity in vitro against pathogens, reducing their growth at different levels. In addition, epiphytic yeasts isolated from peaches were identified as Candida maltosa, Pichia fermentans, kluyveri by PCR-restriction fragment length polymorphism internal transcribed spacer regions screened for same molds. efficacy dependent on concentration yeast cells. Optimal concentrations above 10(7) CFU ml(-1). However, C. maltosa P. fermentans more effective than inhibiting exclusion antifungal metabolite production direct competition nutrients or space with pathogens proposed mechanism biocontrol. Application agents directly artificially wounded peach fruits significantly reduced incidence mold rot during storage 20 degrees