Original Research

Ascospore development in Ceratocystis sensu lato (Fungi): a review

P. W. J. van Wyk, M. J. Wingfield
Bothalia | Vol 20, No 2 | a907 | DOI: https://doi.org/10.4102/abc.v20i2.907 | © 1990 P. W. J. van Wyk, M. J. Wingfield | This work is licensed under CC Attribution 4.0
Submitted: 16 October 1990 | Published: 17 October 1990

About the author(s)

P. W. J. van Wyk, Department of Botany anil Genetics and ** Department of Microbiology and Biochemistry, University of the Orange Free State, South Africa
M. J. Wingfield, Department of Botany anil Genetics and ** Department of Microbiology and Biochemistry, University of the Orange Free State, South Africa

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Abstract

Ceratocystis. Ceratocxstiopsis and  Ophiostoma are important pathogens of trees and some agricultural crops and have recently been found on proteas and forest trees in South Africa. Taxonomic controversy exists regarding these genera and ultrastructural studies on the development of asci, uniquely shaped ascospores and centrum structure are inadequate. This rev iew summarises current knowledge of ascospore shape and development of the centrum obtained from light and electron microscope studies of Cemtocystis sensu lato. Important questions requiring further investigations are outlined. It is furthermore proposed that additional ultrastructural studies are required to clarify the current taxonomic disagreement in this group. Such studies could also identify relationships between these fungi and other Ascomycetes.


Keywords

Ascomycetes; <i>ascospore</i>; <i>Ceratocystiopsis<i>; <i>Ceratocystis</i>. cytology. <i>Ophiosioma</i>; perithecium centrum, ultrastructure

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Crossref Citations

1. Ultrastructure of ascosporogenesis in Ophiostoma davidsonii
P.W.J. Van Wyk, M.J. Wingfield
Mycological Research  vol: 95  issue: 6  first page: 725  year: 1991  
doi: 10.1016/S0953-7562(09)80822-8