Antagonistic Activities of Metschnikowia pulcherrima Isolates Against Penicillium expansum on Amasya Apples

Emine Gizem Acar, Dilara Nur Dikmetas, Dilara Devecioglu, Elif Mehves Ozer, Huseyin Sarikece, Funda Karbancioglu-Guler*

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Abstract: Postharvest fungal diseases cause serious fruit losses and food safety issues worldwide. The trend in preventing food loss and waste has shifted to environmentally friendly and sustainable methods, such as biological control. Penicillium expansum is a common postharvest contaminant fungus that causes blue mould disease and patulin formation on apples. This study aimed to provide biocontrol using Metschnikowia pulcherrima isolates against P. expansum, and to understand their antagonistic action mechanisms. In vitro, 38.77–51.69% of mycelial growth inhibition of P. expansum was achieved by M. pulcherrima isolates with the dual culture assay, while this rate was 69.45–84.89% in the disc diffusion assay. The disease symptoms of P. expansum on wounds were reduced by M. pulcherrima, on Amasya apples. The lesion diameter, 41.84 mm after 12 d of incubation in control, was measured as 24.14 mm when treated with the most effective M. pulcherrima DN-MP in vivo. Although the antagonistic mechanisms of M. pulcherrima isolates were similar, there was a difference between their activities. In general, DN-HS and DN-MP isolates were found to be more effective. In light of all these results, it can be said that M. pulcherrima isolates used in the study have an antagonistic effect against the growth of P. expansum both in vitro and in vivo in Amasya apples, therefore, when the appropriate formulation is provided, they can be used as an alternative biocontrol agent to chemical fungicides in the prevention of postharvest diseases. Graphical Abstract: (Figure presented.)

Orijinal dilİngilizce
Makale numarası180
DergiCurrent Microbiology
Basın numarası7
Yayın durumuYayınlandı - Tem 2024

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© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

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