Fungicide Resistance and Pathogenicity of Monilinia laxa Isolates from Prunus Species in Türkiye


Şenyurt H., DEMİR D., EKEN C.

Applied Fruit Science, cilt.67, sa.3, 2025 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 67 Sayı: 3
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1007/s10341-025-01356-0
  • Dergi Adı: Applied Fruit Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Environment Index
  • Anahtar Kelimeler: Fungicide resistance, Monilinia laxa, Pathogenicity, Stone fruits
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Hayır

Özet

Monilinia laxa is a plant pathogen responsible for causing brown rot and blossom blight in stone fruit trees of the Rosaceae family, such as sweet cherries, sour cherries, and apricots, worldwide, including in Türkiye. Fungicides, which offer effective and rapid control of this pathogen, are commonly used; however, the development of resistance to these fungicides has become a significant issue. In this study, 35 out of 91 M. laxa isolates obtained from sweet cherries, sour cherries, and apricots in the major fruit production regions of Türkiye (Isparta, Afyonkarahisar, and Konya provinces) were assessed for resistance to captan, cyprodinil, and thiophanate-methyl fungicides. Fungicide sensitivity was assessed by measuring mycelial growth in vitro on fungicide-amended media. Significant differences were observed in the EC50 values of fungicides among the fungal isolates, and the isolates with the highest EC50 values were KOKI1 (32,451.2 µg/mL) in captan, ISKA20 (1.980 µg/mL) in cyprodinil, and ISKA32 (4.142 µg/mL) in thiophanate methyl. The resistance of M. laxa isolates to cyprodinil, thiophanate-methyl, and captan fungicides was found to be 2.86%, 20%, and 34.3%, respectively. The development of integrated control programs is essential for effectively managing the pathogen.