Abstract
Grey mould disease, caused by various Botrytis species, poses a significant threat to important plants worldwide. This study aimed to characterize Botrytis populations on strawberry and roses, economically relevant host plants, and raspberry, used as a representative of wild plants, in Iran. A total of 389 isolates were collected and analyzed based on morphological features and haplotyping using molecular markers, transposable elements (Boty and Flipper), and fungicide response. Moreover, 60 isolates were used for phylogenetic analysis based on the rpb2 gene, and 16 selected isolates from each clade were further characterized using the g3pdh, hsp60, and nep2 genes. The results revealed the presence of three distinct species, Botrytis cinerea, Botrytis sinoviticola, and Botrytis prunorum, among the sampled isolates. Additionally, this study reports for the first time the presence of B. sinoviticola on strawberry and isolates belonging to B. cinerea group S in Iran. These findings provide insights into the diversity and composition of Botrytis populations on Iranian host plants.
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