Publications by authors named "Thies Marten Heick"

Septoria tritici blotch (STB; ) is a severe leaf disease on wheat in Northern Europe. Fungicide resistance in the populations of is increasingly challenging future control options. Twenty-five field trials were carried out in nine countries across Europe from 2019 to 2021 to investigate the efficacy of specific DMI and SDHI fungicides against STB.

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Background: Plasmodiophora brassicae is the causal agent of clubroot disease of cruciferous plants and one of the biggest threats to the rapeseed (Brassica napus) and brassica vegetable industry worldwide.

Disease Symptoms: In the advanced stages of clubroot disease wilting, stunting, yellowing, and redness are visible in the shoots. However, the typical symptoms of the disease are the presence of club-shaped galls in the roots of susceptible hosts that block the absorption of water and nutrients.

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Plant pathogens cause significant damage to plant products, compromising both quantities and quality. Even though many elements of agricultural practices are an integral part of reducing disease attacks, modern agriculture is still highly reliant on fungicides to guarantee high yields and product quality. The azoles, 14-alpha demethylase inhibitors, have been the fungicide class used most widely to control fungal plant diseases for more than four decades.

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() populations adapt under the selection pressure of fungicides applied for disease control. The primary objective of this study was to assess fungicide sensitivity in the Estonian population. A total of 282 isolates from 2019 and 2020 were tested for sensitivity to azoles (DMIs; prothioconazole-desthio, epoxiconazole, mefentrifluconazole) and succinate dehydrogenase inhibitors (SDHIs; boscalid, fluxapyroxad).

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Article Synopsis
  • Septoria tritici blotch (STB) is a significant wheat disease in Europe, primarily managed through fungicide applications.
  • The study tested 63 isolates from the Baltic countries and 10 from Finland for sensitivity to four fungicides: epoxiconazole, prothioconazole-desthio, tebuconazole, and fluxapyroxad.
  • Although certain mutations linked to fungicide resistance were found at lower rates than in other regions, the frequency of a specific mutation responsible for strobilurin resistance has increased significantly in the area.
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