PL PATH 300 Study Guide - Inoculation, Fungi Imperfecti, Synnema
30 Oct 2014
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Objectives: learn symptoms/signs associated with diseases caused by deuteromycetes, relate reproductive structures of deuteromycetes to disease cycles. Examine the peas you started 2 weeks ago. Record number of seeds germinated in each treatment in the table provided. Prepare a wet mount of the pea tissues showing symptoms and look for oospores using your compound scope. Like the ascomycetes, the deuteromycetes (also known as the fungi imperfecti), produce conidia but are not known to have a sexual stage (teleomorph). The reason that the sexual phase of a particular fungus is unknown may be due to inappropriate culture conditions. Deuteromycetes are induced to produce sexual structures, they often turn out to be ascomycetes. Deuteromycetes may produce specialized fruiting bodies (sporodochium, pycnidium, acervulus, and synnema). However, these, sporocarps produced by the deuteromycetes contain only conidia and conidiophores. Members of the deuteromycetes also form chlamydospores and structures called sclerotia.
