Profiling difenoconazole and flusilazole resistance, fitness penalty and phenotypic stability in Venturia inaequalis.

ABSTRACT: Apple scab disease causes significant losses in apple crop production. In the north western Himalayas of India, the indiscriminate use of triazole fungicides to manage apple scab has led to the emergence of triazole-resistant strains of V. inaequalis. To investigate the resistance profile in three Venturia inaequalis populations collected from North, South and Central Kashmir, baseline sensitivity assays were conducted on 30 V. inaequalis isolates unexposed to any fungicides. The mean ED₅₀ value and discriminatory dose of difenoconazole and flusilazole were determined to be 0.584, 0.15 µg ml^-1 and 0.018, 0.02 µg ml^-1 respectively. The assessment at these discriminatory doses revealed a major shift in sensitivity against both fungicides. The sequencing of co

SUBMITTER: Mubashir SS 

PROVIDER: S-EPMC11808096 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature