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Acervulus
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Apple with early bitter rot, showing large dark sunken lesions and small fungal fruiting bodies caused by Glomerella cingulata.
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Apple with early bitter rot, showing large dark sunken lesions and small fungal fruiting bodies caused by Glomerella cingulata.
An apple bearing acervuli of the fungal pathogen Glomerella cingulata The fungus causes bitter rot in apple.

Acervulus

biology
Also known as: acervuli
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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•History

Acervulus, an open, saucer-shaped asexual fruiting body found in fungi (kingdom Fungi). Always developed below the epidermis of the host tissue, it bears conidiophores (specialized filaments, or hyphae) that form conidia (spores).

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Manjishtha Bhattacharyya.