doi: 10.4489/KJM.2026.54.1.8 Citation BibTeX RIS Mendeley

Holomorph Morphology and Molecular Phylogeny of Erysiphe zelkovae Found on Zelkova serrata in Korea

Holomorph Morphology and Molecular Phylogeny of Erysiphe zelkovae Found on Zelkova serrata in Korea

• Jin-Woo Park (Department of Forest Resources, Kookmin University, Seoul 02707, Korea)
• Ji-Hyun Park (Department of Forest Resources, Kookmin University, Seoul 02707, Korea)
• Lamiya Abasova (Department of Plant Medicine, Jeonbuk National University, Jeonju 54896, Korea)
• In-Young Choi (Department of Plant Medicine, Jeonbuk National University, Jeonju 54896, Korea)
• Hyeon-Dong Shin (Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea)

Erysiphe zelkovae is one of the main pathogens causing significant damage to Zelkova serrata in East Asia. Despite the global diversity of Zelkova spp., E. zelkovae has been reported only on Z. serrata from East Asian countries (Japan, China, and Korea). Mycological information regarding this fungus is insufficient in terms of sequenced nucleotides and detailed morphological characteristics. This study presents a detailed characterization of the holomorph of E. zelkovae and its taxonomic placement through molecular phylogenetic analyses using the internal transcribed spacer region and large subunit gene sequences from three representative Korean specimens. This study confirmed the identity of E. zelkovae as a distinct species among the Erysiphe section Uncinula species on host plants belonging to the family Ulmaceae.