MYCOLab Ai Logo - gold and army green

Seimatosporium chinense, a Novel Pestalotioid Fungus Associated with Yellow Rose Branch Canker Disease

Summary

Researchers identified a new fungal disease affecting ornamental yellow roses in China. The disease causes branch cankers (sunken lesions) and was caused by a previously unknown fungus species named Seimatosporium chinense. By examining the fungus under microscopes and analyzing its DNA, scientists distinguished this new species from similar fungi. This discovery helps understand and manage diseases affecting ornamental rose plants.

Background

Yellow rose (Rosa xanthina) is a widely cultivated ornamental shrub in China. Branch canker disease symptoms were observed on Rosa xanthina in Beijing and Xinjiang, China, indicating a previously unreported fungal pathogen affecting this species.

Objective

This study aimed to identify and characterize the fungal species associated with yellow rose branch canker disease through combined morphological and phylogenetic analyses using multiple gene sequences.

Results

A new Seimatosporium species, S. chinense, was identified and formally described. The species is phylogenetically close to S. gracile and S. nonappendiculatum but distinguished by conidial morphology, particularly conidial size and the presence of apical appendages. Disease incidence was 1.75% in Beijing and 5% in Xinjiang.

Conclusion

S. chinense represents a novel pestalotioid fungus causing canker disease in yellow roses. The morphological and molecular characterization improves the species concept in Seimatosporium and provides baseline data for future disease control strategies.
  • Published in:Pathogens,
  • Study Type:Descriptive Study, Fungal Taxonomy,
  • Source: PMID: 39770350, DOI: 10.3390/pathogens13121090
Scroll to Top