Two new species of Colletotrichum (Glomerellales, Glomerellaceae) causing anthracnose on Epimedium sagittatum
- Author: mycolabadmin
- 4/3/2025
- View Source
Summary
Researchers discovered two new species of fungi that cause anthracnose (a plant disease causing leaf spots) on Epimedium sagittatum, a medicinal plant used in traditional Chinese medicine. The disease was observed causing significant damage to seedlings in China, with infection rates reaching 90% in severe cases. By analyzing the genetic and physical characteristics of the fungi, scientists identified and named two new species: Colletotrichum epimedii and Colletotrichum sagittati. This discovery is important for developing better strategies to prevent and control the disease in medicinal plant cultivation.
Background
Epimedium sagittatum is a perennial medicinal plant widely used in traditional Chinese medicine for treating various conditions. During 2023-2024, anthracnose disease was observed infecting Epimedium seedlings in Guizhou Province with disease incidence reaching up to 90% in severe cases.
Objective
To identify and characterize the pathogens causing anthracnose on Epimedium sagittatum in Guizhou Province using multi-locus phylogenetic analysis and morphological observations to determine if they represent new species.
Results
Two new anthracnose fungal species were identified: Colletotrichum epimedii and Colletotrichum sagittati. C. epimedii belongs to the Spaethianum complex while C. sagittati belongs to the Boninense complex. Pathogenicity tests confirmed both fungi could infect E. sagittatum, with C. epimedii showing higher pathogenicity than C. sagittati.
Conclusion
This study identified two novel Colletotrichum species responsible for anthracnose in E. sagittatum, providing valuable information for disease prevention and management. Further research is needed to understand how these strains respond to climatic conditions, fungicides, and different Epimedium genotypes for developing targeted disease management strategies.
- Published in:MycoKeys,
- Study Type:Descriptive Study, Taxonomic Study,
- Source: 10.3897/mycokeys.115.144522, PMID: 40226798