The Fungal Pathogen Gnomoniopsis castaneae Induces Damaging Cankers in Multiple Domestic Fagaceae Species
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Updated: Jul 29, 2025

Evaluating Dryocosmus Kuriphilus-induced Damage on Castanea Sativa
Published on: August 30, 2018
Emily P Dobry1, Michael A Rutter2, Michael Campbell3
1College of Agricultural Science, Pennsylvania State University, University Park, PA 16802.
Abstract:
Gnomoniopsis castaneae is internationally recognized as a destructive pathogen of chestnut species. Primarily associated with nut rot, it has also been associated with branch and stem cankers of chestnut and as an endophyte of multiple additional hardwood species. The present study evaluated implications of the recently reported United States presence of the pathogen for domestic Fagaceae species. Stem inoculation assays of Castanea dentata, C. mollissima, C. dentata × C. mollissima, and Quercus rubra (red oak) seedlings were utilized to examine the cankering ability of a regional isolate of the pathogen. The pathogen induced damaging cankers in all assessed species and significant stem girdling in all chestnut species. No previous study has associated the pathogen with damaging infection in Quercus species, and its presence in the United States has the potential to compound ongoing chestnut recovery programs and oak regeneration problems within forest systems.
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Fungal Group Zygomycota
Fungal Phylum Basidiomycota
Fungal Phylum Ascomycota
Fungal Phylum Microsporidia
Overview of Fungi