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Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW)
Biliography : leaves 162-184.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Molecular and Cell Biology
2014
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| _version_ | 1867613321130147840 |
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| access_status_str | Open Access |
| author | Koonjul, Priyum K |
| author2 | Lindsey, George G |
| author_browse | Koonjul, Priyum K Lindsey, George G |
| author_facet | Lindsey, George G Koonjul, Priyum K |
| author_sort | Koonjul, Priyum K |
| collection | Thesis |
| description | Biliography : leaves 162-184. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9940 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:14.045Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Molecular and Cell Biology |
| publisherStr | Department of Molecular and Cell Biology |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/9940 Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) Koonjul, Priyum K Lindsey, George G Brandt, Wolf F Farrant, Jill M Biochemistry Biliography : leaves 162-184. Resurrection plants, including Myrothamnus flabellifolius, grow in shallow soil upon rocky outcrops where they experience regular periods of water stress. Associated with this is light stress. The presence of light under water limiting conditions can result in photo-oxidation which causes damage to plant tissues. M flabellifolius is a homoichlorophyllous plant and thus retains chlorophyll during desiccation. The mechanisms whereby this plant prevents photo-oxidation damage are not known and thus one of the objectives of this study was to characterise the chloroplasts and the changes they undergo during dehydration. It was shown that chloroplasts from M flabellifolius could only be isolated using trehalose gradients (instead of sucrose gradients) and were found to have a higher buoyant density than chloroplasts isolated from another resurrection plant, Craterostigma wilmsii. The latter had the same buoyant density as those isolated from the desiccation sensitive plant Pisum sativum. The increased buoyant density in M flabellifolius was ascribed to the unusual ultrastructure of the thylakoid membranes. The latter have a staggered conformation (staircase arrangement) rather than the discrete granal and intergranal conformation found in most plants. 2014-12-10T08:10:41Z 2014-12-10T08:10:41Z 1999 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/9940 eng application/pdf Department of Molecular and Cell Biology Faculty of Science University of Cape Town |
| spellingShingle | Biochemistry Koonjul, Priyum K Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| thesis_degree_str | Doctoral |
| title | Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| title_full | Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| title_fullStr | Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| title_full_unstemmed | Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| title_short | Investigating the mechanisms of desiccation tolerance in the resurrection plant, myrothamnus flabellifolius (WELW) |
| title_sort | investigating the mechanisms of desiccation tolerance in the resurrection plant myrothamnus flabellifolius welw |
| topic | Biochemistry |
| url | http://hdl.handle.net/11427/9940 |
| work_keys_str_mv | AT koonjulpriyumk investigatingthemechanismsofdesiccationtoleranceintheresurrectionplantmyrothamnusflabellifoliuswelw |