EPWS 310 - PLANT PATHOLOGY

LECTURE 10: ASCOMYCETES

Read: 439-445 (To Powdery Mildews)

TODAY - Cover general introduction to Ascomycete fruiting bodies and Sooty molds.

Introduction to Ascomycetes -

Fig. 11-38 - Sexual reproduction in the Ascomycetes. Plasmogamy, Karyogamy, crozier development and ascus development. Naked asci, Cleistothecia, Perithecia, and apothecia.

Fig 11-39 Pseuothecia, Apothecia (Unitunicate and bitunicate asci)

Fig 11-40 Conidial fruiting bodies.

Fig 11-41 Examples of conidiophores and conidia of Ascomycetes

Fig 11-42 Examples of Ascomycetes anamorphs fruiting bodies (pycnidia)

Fig 11-43 Examples of Ascomycetes fruiting bodies (acervuli)

SOOTY MOLDS

Caused by Capnodiales, black mycelial covering over plant parts, leaves stems, and flowers. Grow on honey dew from aphids etc. Indication of insect problem. Control not required.

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