morphology of Cercophora palmicola (Lasiosphaeriaceae)

A detailed study of ascomal morphology and development in Cercophora palmicola showed that ontogeny is ascohymeniaceous, giving rise to an ostiolate perithecium. Ascomal initials consist of a coiled ascogonium surrounded by several layers of hyphae whose cells become pseudoparenchymatous. The centru...

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Bibliographic Details
Published in:American journal of botany 1999-06, Vol.86 (6), p.780-784
Main Author: Hanlin, Richard T.
Format: Article
Language:English
Subjects:
Asci
ascomal development
Ascomycota
Ascospores
biological development
Botany
cell walls
cells
Cellular biology
centrum ontogeny
Developmental biology
Epidermal cells
Epidermis
fungal anatomy
Fungi
Hyphae
Lasiosphaeriaceae
Mycelium
Mycology and Plant Pathology
Ontogeny
Plant growth
Plant morphology
Sordariaceae
Sordariales
Trees
ultrastructure
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Summary:A detailed study of ascomal morphology and development in Cercophora palmicola showed that ontogeny is ascohymeniaceous, giving rise to an ostiolate perithecium. Ascomal initials consist of a coiled ascogonium surrounded by several layers of hyphae whose cells become pseudoparenchymatous. The centrum of the young ascoma is composed of a few rows of large, thin-walled pseudoparenchymatous cells that line the ascomal wall, with the central region filled by tightly packed, filamentous paraphyses. The ascogenous system forms along the inside of the layer of pseudoparenchymatous cells at the base of the paraphyses and gives rise to unitunicate asci that grow up among the paraphyses. The wall of the mature perithecium is greatly thickened. It is composed of three regions: a thin outer region of darkly pigmented, angular cells with thickened walls: a broad central region of cells with gelatinized walls; and a thin inner region of flattened cells. Ascomal ontogeny in C. palmicola conforms well to the Sordaria type of development, as defined by Huang.
ISSN:0002-9122
1537-2197
DOI:10.2307/2656699