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Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa
Dissertation (MSc (Plant Pathology))--University of Pretoria, 2014.
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| Format: | Thesis |
| Language: | English |
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2026
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| _version_ | 1867613469497360384 |
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| access_status_str | Open Access |
| author2 | Van den Berg, Noelani |
| author_browse | Van den Berg, Noelani |
| author_facet | Van den Berg, Noelani |
| collection | Thesis |
| description | Dissertation (MSc (Plant Pathology))--University of Pretoria, 2014. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/110158 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:36:38.728Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2026 |
| publishDateRange | 2026 |
| publishDateSort | 2026 |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/110158 Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa Van den Berg, Noelani u21158216@tuks.co.za Botha, Renate Banana Pathogen Tolerance Defence Dissertation (MSc (Plant Pathology))--University of Pretoria, 2014. Chapter 1 provides an overview of plant defense responses against Fusarium oxysporum (Fo) and where possible specifically against Fusarium oxysporum f.sp. cubense. General plant defense concepts including pathogen triggered immunity and specific effector triggered immunity is discussed. Both these immune responses are linked to other key players that regulate specific signalling pathways in order to achieve an effective defense response. Mechanisms involved in defense that are discussed include cell wall reinforcements, production of ion fluxes and ROS species, rapid induction of defense genes, accumulation of defense-related proteins which all affect the colonization potential of pathogens including Fo. Chapter 2 reports on the establishment of a pathogenicity trial including all known strains of Foc as well as a non-pathogenic strain of Fo to investigate the disease severity on newly developed banana somaclones compared to industry standard cultivars, ‘Williams’ and ‘Grand Nain’. In Chapter 3, plant defense responses in Cavendish bananas against pathogenic Foc sub-tropical race 4, the strain of Fo which currently affects four of the six production areas in South Africa, was further investigated. Briefly, seven known defense related genes were investigated in the control cultivar ‘Williams’ and the new somaclone ‘Asdia’ using Reverse Transcriptase- quantitative PCR. The expression of each individual gene was assessed over five time points ranging from 0 hours to to 7 days post infection. Data were analyzed statistically to highlight differences amongst the two cultivars with respect to their gene expression against the pathogen. The thesis concludes with a discussion (Chapter 4) on all the data generated during the course of this study, our findings and recommendations. Plant and Soil Sciences MSc (Plant Pathology) 2026-05-15T17:26:30Z 2026-05-15T17:26:30Z 15/02/15 2014 Dissertation http://hdl.handle.net/2263/110158 en application/pdf |
| spellingShingle | Banana Pathogen Tolerance Defence Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title | Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title_full | Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title_fullStr | Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title_full_unstemmed | Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title_short | Elucidating Cavendish banana clones for tolerance to Fusarium oxysporum in South Africa |
| title_sort | elucidating cavendish banana clones for tolerance to fusarium oxysporum in south africa |
| topic | Banana Pathogen Tolerance Defence |
| url | http://hdl.handle.net/2263/110158 |