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Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis
Dissertation (MSc (Genetics))--University of Pretoria, 2024.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2025
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| _version_ | 1867613520435085312 |
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| access_status_str | Open Access |
| author2 | Duong, Tuan A. |
| author_browse | Duong, Tuan A. |
| author_facet | Duong, Tuan A. |
| collection | Thesis |
| dc_rights_str_mv | © 2023 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 (Genetics))--University of Pretoria, 2024. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/101239 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:27.405Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| 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:2263/101239 Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis Duong, Tuan A. Wingfield, Brenda D. Kanzi, Aquillah M. anien95@gmail.com Viljoen, Anien UCTD Sustainable Development Goals (SDGs) Ceratocystidaceae Ceratocystis Population genomics Synteny Mitochondrial genome variation Phylogenetic incongruences Dissertation (MSc (Genetics))--University of Pretoria, 2024. The fungal family Ceratocystidaeceae contains several genera that are considered highly pathogenic and able to cause disease on a wide range of hosts. The taxonomic history of Ceratocystidaceae species has been under debate for many years due to the lack of morphologically distinguishing characteristics between the species and genera. Chapter one of this thesis provides a broad overview of the speciation process from defining species to studying the barriers that prevents gene flow between populations or prevents hybrid zygotes from developing before and/or after fertilization. Different speciation genomic approaches, their advantages and limitations are also discussed. The chapter also provides a brief overview of the taxonomy, species delineation and the controversies associated with this process in the Ceratocystidaceae, focusing specifically on the Ceratocystis fimbriata sensu lato complex. The second chapter presents the work on characterisation of mitochondrial (mt) genomes for 18 species in 10 genera in the Ceratocystidaceae. The aim of this chapter was thus to assemble, characterise and comparatively analyse mt genomes from multiple species and genera in the Ceratocystidaceae. The work of chapter 3 focuses on the taxonomic confusion that has historically plagued the C. fimbriata s.l complex. The aim of this chapter was to use whole genome SNP data from a large collection of isolates of C. fimbriata sensu lato complex to investigate species boundaries, phylogenetic relationships, and the genetic differentiation between these closely related species. Taken together, the body of the work presented in this dissertation contributes to the current understanding of mitochondrial genome evolution, species boundaries, and the evolutionary relationship among species and genera within the Ceratocystidaceae. These findings pave the way for future research aimed at exploring the biology, pathogenicity, speciation, and host adaptation of the important group of fungi. Biochemistry, Genetics and Microbiology (BGM) MSc (Genetics) Unrestricted Faculty of Natural and Agricultural Sciences SDG-15: Life on land 2025-02-26T10:30:12Z 2025-02-26T10:30:12Z 2025-04 2024-11 Dissertation * A2025 http://hdl.handle.net/2263/101239 10.25403/UPresearchdata.28494266 en © 2023 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 Sustainable Development Goals (SDGs) Ceratocystidaceae Ceratocystis Population genomics Synteny Mitochondrial genome variation Phylogenetic incongruences Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title | Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title_full | Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title_fullStr | Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title_full_unstemmed | Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title_short | Mitochondrial genomes from the Ceratocystidaceae and species boundaries in Ceratocystis |
| title_sort | mitochondrial genomes from the ceratocystidaceae and species boundaries in ceratocystis |
| topic | UCTD Sustainable Development Goals (SDGs) Ceratocystidaceae Ceratocystis Population genomics Synteny Mitochondrial genome variation Phylogenetic incongruences |
| url | http://hdl.handle.net/2263/101239 |