Left, cross section of newly inoculated cucumber fruit. Right, same cross section after inoculum development. Rough mold filaments are visible along with spherical spores, which are white and then blacken as they mature.
Óscar Mario Castro SolanoAlajuela, Costa Rica, América CentralE-mail: email@example.com
Host: Cucumis sativus L. (cucumber) Disease name: Rhizopus rotPathogen name: Rhizopus stolonifer (Ehrenb.) Vuill.
Rhizopus stolonifer is a fungus with worldwide distribution, and inoculum is present throughout the harvest period. It is a wound parasite that enters the fruit through any break in the skin. This fungus spreads by contact from fruit to fruit. Rhizopus rot is a wet rot of cucumber encountered during transport or in the market and can cause substantial losses. In tropical countries, the disease progresses very quickly. Rhizopus is a cosmopolitan genus that includes filamentous fungi found in soil, degrading fruits and vegetables, animal wastes, and waste. Rhizopus species produce white asexual and sexual spores that turn black as they mature. This mixture of immature and mature fruiting bodies leads to a proliferation of rough filaments that are gray or rust colored and is the most common means of identifying the species in culture. Source: Enfermedades en el Mercado. Marion A. Smith et al. Centro Regional de Ayuda Técnica. A.I.D. U.S.A.
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