Full Text Available

Access Repository Access Repository
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Cover Image

Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales

PhD

Saved in:
Other Authors: Wingfield, Michael J.
Format: Thesis
Published: University of Pretoria 2013
Subjects:
UCTD
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1867613543036092416
access_status_str Open Access
author2 Wingfield, Michael J.
author_browse Wingfield, Michael J.
author_facet Wingfield, Michael J.
collection Thesis
dc_rights_str_mv © 2012 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.
description PhD
format Thesis
id oai:repository.up.ac.za:2263/31244
institution University of Pretoria (South Africa)
last_indexed 2026-06-10T12:37:48.825Z
license_str Other — see source repository
provenance_str_mv Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository
publishDate 2013
publishDateRange 2013
publishDateSort 2013
publisher University of Pretoria
publisherStr University of Pretoria
record_format dspace
source_str UPSpace — University of Pretoria Institutional Repository
spelling oai:repository.up.ac.za:2263/31244 Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales Wingfield, Michael J. De Beer, Z. Wilhelm UCTD PhD The ophiostomatoid fungi included more than 450 species of ascomycetes specifically adapted for insect dispersal. Many of these species have a significant economic impact as sapstaining fungi or tree pathogens harmful to forestry industries, but some are also as opportunistic human pathogens. DNA based studies in recent years have shown that the majority of these fungi belonged in either the Ophiostomatales or Microascales (Sordariomycetes), with a few Sporothrix spp. grouping in the Microstromatales (Ustilaginomycetes). However, most phylogenetic studies have focussed on restricted numbers of taxa sharing similar morphology. The aim of the studies in this thesis was to reconsider the taxonomy of all the ophiostomatoid fungi at the order and family levels, and the status of genera and species with sporothrix-like anamorphs in the Ophiostomatales and Microstromatales. All available published sequence data were screened for reliable sequences representing as many species as possible, and new data were generated where necessary for ex-type or other isolates. The resulting phylogenies enabled the formal redefinition of the Ophiostomatales and Ophiostomataceae, and the description of two new families, the Graphiaceae (Microascales) and Quambalariaceae (Microstromatales). Problems relating to the delineation of Ophiostoma s.l., Leptographium s.l., and Raffaelea s.l. were exposed and discussed, 18 species complexes were defined in the Ophiostomatales, and four genera were formally redefined: Sporothrix, Graphium, Graphilbum and Knoxdaviesia. Forty six new combinations were made, primarily in Sporothrix, Ophiostoma, Graphilbum and Knoxdaviesia. One nomen novum was erected in Ceratocystis and one new Quambalaria species was described. A comprehensive nomenclator for 596 ophiostomatoid species including references to all descriptions, synonymies and phylogenetic data was also compiled. This study represents the first comprehensive, all-inclusive assessment of the taxonomy and nomenclature of the ophisotomatoid fungi based on phylogenetic relationships and the one fungus one name principles. Finally, the immediate and indiscriminate application of the one fungus one name principles in Ophiostoma s.l. and Leptographium s.l. might result in many unnecessary name changes. Thus, several recommendations have been made to ensure nomenclatural stability in these genera in the immediate future and until more robust phylogenies become available that can refine the delineation of these genera. Microbiology and Plant Pathology Unrestricted 2013-09-09T12:09:16Z 2012-09-14 2013-09-09T12:09:16Z 2012-09-07 2012-09-14 2012-09-03 Thesis De Beer, ZW 2012, Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales , PhD thesis, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-09032012-095039 / > D12/9/67/ag http://hdl.handle.net/2263/31244 http://upetd.up.ac.za/thesis/available/etd-09032012-095039/ © 2012 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria
spellingShingle UCTD
Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title_full Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title_fullStr Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title_full_unstemmed Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title_short Taxonomy and phylogeny of Ophiostoma spp. with Sporothrix anamorphs and their generic relationships in the Ophiostomatales
title_sort taxonomy and phylogeny of ophiostoma spp with sporothrix anamorphs and their generic relationships in the ophiostomatales
topic UCTD
url http://hdl.handle.net/2263/31244
http://upetd.up.ac.za/thesis/available/etd-09032012-095039/

Similar Items