Morphological and Molecular Characterization of Apple Scab (Venturia inaequalis) in Kazakhstan and Kyrgyzstan.

ABSTRACT: Apple scab, caused by the fungus Venturia inaequalis, is one of the most widespread and economically significant diseases of apple orchards, leading to reduced photosynthesis, fruit damage, and yield losses of up to 70%. In this study, a survey of 30 wild and cultivated apple populations in Kazakhstan and Kyrgyzstan was conducted, encompassing 302 samples. The pathogen was detected in 8 populations (48 samples), corresponding to an infection rate of 16%. Molecular identification using the EF-1α marker and ITS region sequencing definitively confirmed the presence of V. inaequalis in all positive samples. Phylogenetic analysis showed clear population structuring: isolates from Kyrgyzstan formed a distinct clade close to international lineages, while Kazakh isolates showe

SUBMITTER: Kostyukova V 

PROVIDER: S-EPMC12731915 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature