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Screening for Antagonistic Yeasts to Manage Alternaria spp. in Organic Farming

Author

Listed:
  • Jolanta Kowalska

    (Institute of Plant Protection—National Research Institute, Wegorka 20, 60-318 Poznan, Poland)

  • Joanna Krzymińska

    (Institute of Plant Protection—National Research Institute, Wegorka 20, 60-318 Poznan, Poland)

  • Kinga Matysiak

    (Institute of Plant Protection—National Research Institute, Wegorka 20, 60-318 Poznan, Poland)

  • Magdalena Jakubowska

    (Institute of Plant Protection—National Research Institute, Wegorka 20, 60-318 Poznan, Poland)

Abstract

Early blight of potatoes when not controlled can lead to major yield loss. In organic farming, disease control methods using beneficial microorganisms are needed. This study aimed to use commercially available yeast strains to prevent early blight in organically grown potatoes. Six commercially yeast strains used in the food industry, mainly in baking, brewing and winemaking, were evaluated against Alternaria alternata and A. solani . An in vitro test was conducted to assess yeast antagonistic properties. Production of lytic exoenzymes by yeast strains was determined. In the greenhouse experiments, the abilities of yeast strains to colonize potato leaf surface and to minimize Alternaria symptoms on plants were assessed. Saccharomyces cerevisiae Coobra strain inhibited in vitro Alternaria mycelium growth and most effectively reduced Alternaria symptoms on inoculated plants (from approximately 60% to 9% for A. solani and 14% for A. alternata ) after seven days. This strain produced the most enzymes, i.e., amylase, pectinase and protease. After eighteen days, only the S. cerevisiae Coobra population was isolated from the leaves. In conclusion, the Coobra strain shows antagonistic properties against Alternaria spp. and is promising for further field tests.

Suggested Citation

  • Jolanta Kowalska & Joanna Krzymińska & Kinga Matysiak & Magdalena Jakubowska, 2022. "Screening for Antagonistic Yeasts to Manage Alternaria spp. in Organic Farming," Agriculture, MDPI, vol. 12(10), pages 1-12, October.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:10:p:1693-:d:942487
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    References listed on IDEAS

    as
    1. Christos A. Damalas & Spyridon D. Koutroubas, 2018. "Current Status and Recent Developments in Biopesticide Use," Agriculture, MDPI, vol. 8(1), pages 1-6, January.
    2. Jolanta Kowalska & Joanna Krzymińska & Józef Tyburski, 2022. "Yeasts as a Potential Biological Agent in Plant Disease Protection and Yield Improvement—A Short Review," Agriculture, MDPI, vol. 12(9), pages 1-15, September.
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    Cited by:

    1. Jolanta Kowalska & Kinga Matysiak, 2023. "Advances in Crop Protection in Organic Farming System," Agriculture, MDPI, vol. 13(10), pages 1-5, October.

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