Phomopsis sclerotioides
black root rot of cucumber
Diaporthe sclerotioides
Asia: India, Malaysia; Europe: Austria, Denmark, France, Germany, Netherlands, Norway, Sweden, Switzerland, UK; North America: Canda, USA
WA
2025-09-05
fungus
Korea
Main: cucumber, cucurbits
PHOPSC
Phomopsis sclerotioides is a strong saprophytic fungus that survives in soil, forming sclerotia that can persist for years under adverse conditions. It rapidly colonizes clean or sterilized soil, requiring thorough disinfection to manage. The fungus is dispersed through water, air, and soil particles.
5 Known Hosts
Citrullus lanatus
watermelon
No
PHOPSC-3, PHOPSC-5
No evidence that seed is a pathway. Primarily found in greenhouse soils.
2025-09-05 09:35:37
Bruton BD and Biles CL. 2017. Phomosis Black Root Rot of Cucumber. In, Compendium of Cucurbit Diseases and Pests, Second Edition. Keinath AP, Wintermantel WM and Zitter TA, eds. The American Phytopathological Society, St. Paul, MN.
Richardson, M.J. 1990. An Annotated List of Seed-Borne Diseases. Fourth Edition. International Seed Testing Association, Zurich, Switzerland
Cucumis melo
melon
No
PHOPSC-3, PHOPSC-5
No evidence that seed is a pathway. Primarily found in greenhouse soils.
2025-09-05 09:35:51
Bruton BD and Biles CL. 2017. Phomosis Black Root Rot of Cucumber. In, Compendium of Cucurbit Diseases and Pests, Second Edition. Keinath AP, Wintermantel WM and Zitter TA, eds. The American Phytopathological Society, St. Paul, MN.
Richardson, M.J. 1990. An Annotated List of Seed-Borne Diseases. Fourth Edition. International Seed Testing Association, Zurich, Switzerland
Cucumis sativus
cucumber
No
PHOPSC-3, PHOPSC-5
No evidence that seed is a pathway. Primarily found in greenhouse soils.
2025-09-05 09:36:06
Bruton BD and Biles CL. 2017. Phomosis Black Root Rot of Cucumber. In, Compendium of Cucurbit Diseases and Pests, Second Edition. Keinath AP, Wintermantel WM and Zitter TA, eds. The American Phytopathological Society, St. Paul, MN.
Richardson, M.J. 1990. An Annotated List of Seed-Borne Diseases. Fourth Edition. International Seed Testing Association, Zurich, Switzerland
Cucurbita spp.
squash, pumpkin, gourd
No
PHOPSC-3, PHOPSC-5
No evidence that seed is a pathway. Primarily found in greenhouse soils.
2025-09-05 09:36:16
Bruton BD and Biles CL. 2017. Phomosis Black Root Rot of Cucumber. In, Compendium of Cucurbit Diseases and Pests, Second Edition. Keinath AP, Wintermantel WM and Zitter TA, eds. The American Phytopathological Society, St. Paul, MN.
Richardson, M.J. 1990. An Annotated List of Seed-Borne Diseases. Fourth Edition. International Seed Testing Association, Zurich, Switzerland
Zea mays
corn
Not a host
Corn seed is not a known host.
2025-09-05 09:37:15
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