Phylogeny, Morphology and Pathogenicity of Biscogniauxia mediterranea Causing Charcoal Canker Disease on Quercus brantii in Southern Iran

Charcoal canker of oak, which has recently increased in southern Iran, could pose a serious threat to the entire forest ecosystem near future. In addition, it seems that climate change and its consequences, such as drought regions have exacerbated this phenomenon. Consequently, objective study was identify fungal pathogens cause charcoal disease oak forests South Zagros. It also sought find associations between changes occurrence/exacerbation under non intense stress non-inoculated or inoculated <i>Quercus brantii</i> seedlings. total, 120 isolates were obtained from eight located Zagros Mountains Southern Kohgiluyeh & Boyer-Ahmad Fars provinces, classified <i>Biscogniauxia mediterranea</i> based on morphological assessment. Subsequently, molecular assay confirmed result by phylogenetic inference internal transcribed spacer–rDNA regions, α-actin, β-tubulin genes. The results pathogenicity test showed response <i>B. (Iran-G1 Iran-M70) varied different environments for measured necrotic lesion length. comparison with control moisture treatments (non-stress), length stress. general, seedlings’ exposure water-deficient pathogen affect spread/severity disease.