Reducing Postharvest Losses in Organic Apples: The Role of Yeast Consortia Against Botrytis cinerea

Joanna Krzymińska () and Jolanta Kowalska
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Joanna Krzymińska: Institute of Plant Protection—National Research Institute, 60-318 Poznań, Poland
Jolanta Kowalska: Institute of Plant Protection—National Research Institute, 60-318 Poznań, Poland

Agriculture, 2025, vol. 15, issue 6, 1-13

Abstract: Grey mould caused by Botrytis cinerea presents significant challenges to apple production including organic farming. Biocontrol yeasts and their consortia can limit fungal diseases. This study evaluates the efficacy of selected yeast isolates and their consortia in suppressing B. cinerea in stored apples. The yeast strains tested— Wickerhamomyces anomalus 114/73, Naganishia albidosimilis 117/10, and Sporobolomyces roseus 117/67—were assessed at 4 °C and 23 °C, individually and in consortia. The results demonstrate the superior efficacy of a consortium combining all three isolates, which achieved the highest reduction in spore germination and disease severity. A two-strain consortium of isolates 114/73 and 117/10 also showed substantial biocontrol activity, outperforming single-strain treatments. These combinations effectively suppressed B. cinerea growth and displayed rapid colonization of apple wounds. The study highlights the potential of yeast isolates and their consortia to manage postharvest fungal decay, addressing a critical need for sustainable, eco-friendly solutions in organic apple production.

Keywords: yeast; biocontrol; consortia; organic farming; apple; storage; Botrytis cinerea; grey mould (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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