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Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex
Dissertation (MSc)--University of Pretoria, 2009.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613667568123904 |
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| access_status_str | Open Access |
| author2 | Bloomer, Paulette |
| author_browse | Bloomer, Paulette |
| author_facet | Bloomer, Paulette |
| collection | Thesis |
| dc_rights_str_mv | © 2020 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 | Dissertation (MSc)--University of Pretoria, 2009. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/79241 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:39:47.699Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| 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:2263/79241 Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex Bloomer, Paulette joha.Grobbelaar@fabi.up.ac.za Wingfield, Michael J. Wingfield, Brenda D. Grobbelaar, Joha UCTD Dissertation (MSc)--University of Pretoria, 2009. Polymorphic sequence-characterised marker assays from a recent diversity study on the Ascomycete fungus Ophiostoma quercus from Africa showed that some isolates collected from hardwoods were genetically distinct from O. quercus. In the present study we compared these African isolates with authentic O. quercus isolates, including the neo-type of the species from oak in France, by evaluating morphological characters, growth in culture, mating compatibility, and DNA sequence data. The isolates from Africa exhibited substantial variability in culture and were morphologically similar to O. quercus. Phylogenetic analyses of the ITS, β-tubulin and Translation Elongation Factor 1-α gene regions confirmed that the African group represents a distinct species in the hardwood lineage of the O. piceae-complex, closely related to O. ulmi and O. himal-ulmi. Mating studies between O. quercus and the African isolates showed that isolates predominantly mated with those of their own group, although there were rare cases of fertile crosses between the groups. Isolates residing in the African lineage is described here as a new species, O. tsotsi sp. nov., and is characterized based on morphological characteristics, growth in culture and sequence comparisons. Genetics MSc Unrestricted 2021-04-06T07:22:22Z 2021-04-06T07:22:22Z 2009/11/02 2009 Dissertation Grobbelaar, J 2009, Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex, MSc Dissertation, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/79241> E1487 http://hdl.handle.net/2263/79241 en © 2020 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, phylogeny and species diversity in the Ophiostoma quercus complex |
| title | Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex |
| title_full | Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex |
| title_fullStr | Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex |
| title_full_unstemmed | Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex |
| title_short | Taxonomy, phylogeny and species diversity in the Ophiostoma quercus complex |
| title_sort | taxonomy phylogeny and species diversity in the ophiostoma quercus complex |
| topic | UCTD |
| url | http://hdl.handle.net/2263/79241 |