Work

Reassessment of Podosphaera carpesiicola : Host Associations, Holomorph Morphology, and Molecular Phylogeny

Year: 2026

Type: article

Abstract: Podosphaera carpesiicola is currently regarded as endemic to Japan, despite powdery mildews on Carpesium species in Korea were previously reported under the name Sphaerotheca fusca. In the present study, 23 herbarium specimens of Carpesium-associated powdery mildews collected from various localities in Korea were examined. Both morphological (holomorph) characteristics and molecular phylogenetic analyses based on the combined internal transcribed spacer regions (ITS1 and ITS2) and large subunit gene (LSU) rDNA sequences support the identification of all specimens as P. carpesiicola. Our results provide the first confirmed record of P. carpesiicola in Korea under its currently accepted name and demonstrate its occurrence on four Carpesium species, including C. abrotanoides and C. cernuum, as newly identified hosts in Korea. These findings extend the known geographic distribution of P. carpesiicola in East Asia and clarify the taxonomic identity of earlier records previously assigned to S. fusca.

Source: Mycobiology

DOI: 10.1080/12298093.2026.2746256

Authors: Lamiya Abasova, In-Young Choi, Ji-Hyun Park, Jin-Woo Park, Hyeon-Dong Shin

Institutions: Western Caspian University, Jeonbuk National University, Kookmin University, Korea University

Language: English

Topic: Powdery Mildew Fungal Diseases

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $1,134

Funders: National Research Foundation of Korea, Korea Forest Service