EPPO Global Database

Cryphonectria parasitica(ENDOPA)

Photos

All photos included on this page can only be used for educational purposes.
For publication in journals, books or magazines, permission should be obtained from the original photographers with a copy to EPPO.

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Pycnidial stromata in the bark, conidial tendrils are excreted

Courtesy: LNPV, Nancy (FR)

Pycnidium from culture, inner wall is covered with conidiogenous cells (bar = 50 ìm)

Courtesy: SFI, Ljubljana (SI)

Characteristic mycelial fan of C. parasitica in the inner bark of a chestnut tree

Courtesy: Ministry of Agriculture (HU)

Long, orange-yellow tendrils of C. parasitica pycnidiospores exuding from pycnidia on chestnut tree bark

Courtesy: Ministry of Agriculture (HU)

Orange-yellow pycnidia of C. parasitica on chestnut tree bark

Courtesy: Ministry of Agriculture (HU)

Swelling and bark cracking on 13-year-old chestnut tree

Courtesy: Ministry of Agriculture (HU)

Passive (healed) chestnut blight canker associated with hypovirulence of C. parasitica

Courtesy: Daniel Rigling

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Scanning electron micrograph showing pycnidial ooze of Cryphonectria parasitica

Courtesy: Paul Beales

Canker with orange discoloration

Courtesy: Helena Bragança, INIAV (PT)

Perithecia in a stroma, necks and ostioles in papillate protuberances of the stroma (bar = 500 ìm)

Courtesy: SFI, Ljubljana (SI)

Sunken area on bark of a young chestnut tree. Note adventitious shoots arising below the dead patch

Courtesy: Ministry of Agriculture (HU)

Perithecia

Courtesy: Helena Bragança, INIAV (PT)

Canker

Courtesy: Helena Bragança, INIAV (PT)

Ascus, ascospores and conidia (bar = 20 ìm)

Courtesy: SFI, Ljubljana (SI)

Cultures of C. parasitica isolates on PDA (1 – virulent, 2 – hypovirulent, 3 and 4 – intermediate virulence)

Courtesy: SFI, Ljubljana (SI)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)

Courtesy: Wietse den Hartog NVWA (NPPO the Netherlands)