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Didymella ligulicola (ray blight of chrysanthemum )
Didymella ligulicola
ray blight of chrysanthemum
Mycosphaerella ligulicola, Stagonosporopsis chrysanthemi, Ascochyta chrysanthemi, Phoma chrysanthemi, Phoma ligulicola var. ligulicola, Phoma ligulicola, Stagonosporopsis ligulicola var. ligulicol, Didymella ligulicola var. ligulicola, Stagonosporopsis ligulicola
Africa: Eswatini; Asia: Japan; Europe: Albania, Andorra, Belgium, Bosnia and Herzegovina, Croatia, France, Germany, Ireland, Italy, Liechtenstein, Luxembourg, Malta, Moldova, Monaco, Norway, Romania, San Marino, Serbia, Slovakia, Slovenia, Ukraine, UK; North America: USA; Oceania: Australia, New Zealand, Papua New Guinea.
CT, DE, GA, NJ, OR, RI, SC, VA
2025-09-22
fungus
China, Korea
Main: chrysanthemum. Other: lettuce, sunflower, chicory, globe artichokes
MYCOLG
Didymella ligulicola causes leaf spot disease, producing water-soaked, brown to black lesions on leaves that can lead to leaf blighting. It survives in plant debris or soil and spreads primarily through water-splashed spores. Infection is favored by cool, wet, or humid conditions, and repeated cycles can occur during the growing season. Seed is not known to be a pathway for any host.
3 Known Hosts
Chrysanthemum spp.
chrysanthemum
No
MYCOLG-2, CABI CPC, MYCOLG-3
Seed is not known to be a pathway.
2025-09-22 14:31:47
MYCOLG-2
Hahn W, Schmatz R, 1980. Diagnosis and control of infection by Ascochyta in chrysanthemums. Nachrichtenblatt fur den Pflanzenschutz in der DDR, 34:189-192
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
MYCOLG-3
EFSA Panel on Plant Health (PLH). (2013). Scientific opinion on the risks to plant health posed by Stagonosporopsis chrysanthemi (Stevens) Crous, Vaghefi and Taylor [Didymella ligulicola (Baker, Dimock and Davis) Arx var. ligulicola; syn. Didymella ligulicola (Baker, Dimock and Davis) Arx] in the EU territory, with identification and evaluation of risk reduction options. EFSA Journal, 11(10), 3376.
Helianthus annuus
sunflower
No
MYCOLG-2, CABI CPC, MYCOLG-3
Seed is not known to be a pathway.
2025-09-22 14:32:10
MYCOLG-2
Hahn W, Schmatz R, 1980. Diagnosis and control of infection by Ascochyta in chrysanthemums. Nachrichtenblatt fur den Pflanzenschutz in der DDR, 34:189-192
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
MYCOLG-3
EFSA Panel on Plant Health (PLH). (2013). Scientific opinion on the risks to plant health posed by Stagonosporopsis chrysanthemi (Stevens) Crous, Vaghefi and Taylor [Didymella ligulicola (Baker, Dimock and Davis) Arx var. ligulicola; syn. Didymella ligulicola (Baker, Dimock and Davis) Arx] in the EU territory, with identification and evaluation of risk reduction options. EFSA Journal, 11(10), 3376.
Lactuca sativa
lettuce
No
MYCOLG-2, CABI CPC, MYCOLG-3
Seed is not known to be a pathway.
2025-09-22 14:32:37
MYCOLG-2
Hahn W, Schmatz R, 1980. Diagnosis and control of infection by Ascochyta in chrysanthemums. Nachrichtenblatt fur den Pflanzenschutz in der DDR, 34:189-192
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
MYCOLG-3
EFSA Panel on Plant Health (PLH). (2013). Scientific opinion on the risks to plant health posed by Stagonosporopsis chrysanthemi (Stevens) Crous, Vaghefi and Taylor [Didymella ligulicola (Baker, Dimock and Davis) Arx var. ligulicola; syn. Didymella ligulicola (Baker, Dimock and Davis) Arx] in the EU territory, with identification and evaluation of risk reduction options. EFSA Journal, 11(10), 3376.
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