First report identifies Corynespora cassiicola as the cause of leaf spot in Ageratina altissima across South Korea, suggesting ecological impacts.
Ageratina altissima is an ecosystem‐disturbing invasive plant widely distributed in modified habitats across South Korea. In October 2025, leaf spot disease was observed on A. altissima in Bucheon and Guri, South Korea. The causal agent was identified as Corynespora cassiicola based on morphological characterization and a phylogenetic analysis of the ITS and LSU regions of the rDNA. The artificial inoculation of healthy A. altissima leaves resulted in symptom development, and the same fungus was reisolated, fulfilling Koch's postulates. This is the first global report of leaf spot caused by C. cassiicola on A. altissima .
No takes yet. Share an insight, caveat, or question.
Park et al. (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: