Biocontrol Activity of Metschnikowia pulcherrima Strains Isolated from Local Varieties of Apples in Kazakhstan
Urazova M. Satenova A. Askarova M. Tuyakova A. Аbilkhadirov А. Shaikhin S.
Mar-Apr, 2025Unique Scientific Publishers
International Journal of Agriculture and Biosciences
2025#14Issue 2265 - 275 pp.
Wild yeasts, as part of the natural microbiome of fruits and vegetables, are promising candidates for applications as biocontrol agents due to their biological activities, low demand for nutrient sources, and broad spectrum of antifungal activity. In the present research, 27 yeast strains were isolated from the carposphere of apples and pears stored in a private gardening farm in Southeastern Kazakhstan at the end of the cold storage period. Various in-vitro plate tests showed high inhibitory activity against Penicillium expansum, Alternaria alternata and Acremonium alternatum in eight strains, defined by ITS region sequence as Metschnikowia pulcherrima. Experiments with inoculation of two apple varieties identified the strain MP-03 as the most effective. Spraying the local apple tree varieties Aport, Voskhod and Talgarskoe with a lyophilisate solution of the MP-03 strain during flowering and fruiting periods reduced the incidence and severity of scab (Venturia inaequalis) in fruit compared to the control. Postharvest treatment of apples of three cultivars resulted in an increase in the yield of healthy fruits at the end of the 120-day storage period in comparison to the control groups. In addition, the firmness and weight retention indices also showed better results in treated fruits.
Fungicidal activity , Microbiome , Post-harvest spoilage , Storage
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Republican Collection of Microorganisms LLP, Laboratory of Genetics and Biochemistry of Microorganisms, Astana, Kazakhstan
Department of General Biology and Genomics, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Kazakh Fruit and Vegetable Research Institute (KazF&VRI), Almaty, Kazakhstan
Republican Collection of Microorganisms LLP
Department of General Biology and Genomics
Kazakh Fruit and Vegetable Research Institute (KazF&VRI)
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