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Pest categorisation of Thecaphora solani.

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    The fungus Thecaphora solani, causing potato smut, is not present in the EU but could establish and impact potato production. It meets criteria for a potential Union quarantine pest.

    Keywords:
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    Area of Science:

    • Plant Pathology
    • Mycology
    • Agricultural Entomology

    Background:

    • Thecaphora solani is a fungus causing smut of potato.
    • It is present in several South American countries but not in the EU.
    • The pathogen affects Solanum tuberosum (potato) and other Solanum species, including tomato.

    Purpose of the Study:

    • To perform a pest categorisation of Thecaphora solani for the EU.
    • To assess the risk of T. solani introduction and establishment in the EU.
    • To determine if T. solani meets criteria for a Union quarantine pest.

    Main Methods:

    • Pest categorisation based on existing data.
    • Analysis of pest distribution, host range, and pathways.
    • Assessment against EU regulatory criteria for quarantine pests.

    Main Results:

    • Thecaphora solani is well-identified with existing detection methods.
    • EU climate and host availability suggest potential establishment.
    • Introduction could impact EU potato production, causing yield loss and unmarketable tubers.

    Conclusions:

    • Thecaphora solani meets criteria for a potential Union quarantine pest.
    • Current regulations cover major hosts and entry pathways.
    • Uncertainties remain regarding host range, epidemiology, and minor unregulated pathways.