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Theses and Dissertations (Plant Science): Recent submissions
Now showing items 21-40 of 219
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(University of Pretoria, 2022)Two main hypotheses have been accepted as the potential cause of eczema. The inside-out hypothesis states that eczema is caused by an immunological defect involving the overproduction of tumor necrosis factor-alpha (TNF-α), ...
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(University of Pretoria, 2022)Contaminated fresh produce has increasingly been implicated in foodborne disease outbreaks with antimicrobial resistance reported as a major emerging health threat. This study aimed to determine the microbiological quality ...
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(University of Pretoria, 2022-03)Exserohilum turcicum is a foliar pathogen that causes the widespread and damaging disease, northern leaf blight (NLB), in both sorghum and maize. Even though E. turcicum is an economically important pathogen, limited ...
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The multifaceted induction of apoptosis in skin cancer cells using extracts of South African plants (University of Pretoria, 2022)Eleven plants were selected based on their phytochemical constituents, ethnobotanical usage and biological activity resulting in thirty-three plant extracts prepared using ethanol, dichloromethane and water. The plant ...
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(University of Pretoria, 2021)Gonorrhoea, caused by Neisseria gonorrhoeae, is one of the most problematic sexually transmitted diseases (STDs) in the world as it negatively affects people’s health and livelihoods. Antibiotic resistance of N. gonorrhoeae ...
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(University of Pretoria, 2022)The World Health Organization has raised concerns of antibiotic resistance threatening the global health care system and economy. Antibiotic resistance results from quorum sensing mechanisms that allow bacterial species ...
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(University of Pretoria, 2022)Ethnopharmacological relevance: Pappea capensis (Sapindaceae), traditionally used by VhaVenda people in South Africa to treat malaria, was evaluated for antiplasmodial activity and cytotoxicity. Materials and methods: ...
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(University of Pretoria, 2022-02)Compositional and functional plant community characteristics can strongly govern some ecosystem processes. These community characteristics, may, in turn, be related to multiple environmental variables, including edaphic, ...
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(University of Pretoria, 2021-12-08)Alien invasions are a global concern, with impacts on native biodiversity. Invasive species may be introduced to new regions for many reasons, with ornamental horticulture being one of the major pathways for the entry of ...
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(University of Pretoria, 2021)The effects of temperature and precipitation, and the impacts of changes in these climatic conditions, on biological communities have been investigated extensively. The roles of other climatic factors are, however, ...
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(University of Pretoria, 2022)Maize is a staple food source for millions of people across the African continent. A threat to maize production is therefore a threat to food security. The increased spread of alien insect pests threatens agriculture in ...
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(University of Pretoria, 2021)Venous thromboembolism (VTE) is a collective term for the cardiovascular diseases, deep vein thrombosis and pulmonary embolism. Many of those who live in developing countries rely on herbal medicinal products as a primary ...
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(University of Pretoria, 2021)Vegetation classifications and maps form the foundation of understanding spatial variation in vegetation and the environmental conditions driving the occurrence of plant assemblages and form a baseline for detecting changes ...
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(University of Pretoria, 2014-07)Transient transformation approaches show promise for rapidly assessing specific genes and gene constructs in live tissue. This is especially true in the case of plant leaf tissues, which are hard to culture and provide ...
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(University of Pretoria, 2014)Maize (Zea mays) is globally considered as an important cereal crop, and a major staple food in developing countries such as Africa (WARD et al. 1999). In South Africa, maize is considered the most important grain crop as ...
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(University of Pretoria, 2014)Cercospora zeina is the causal agent of a foliar disease of maize called grey leaf spot (GLS) in southern Africa (Meisel et al, 2009). Maize is the most important food crop in sub-Saharan Africa and the Americas. Consequently ...
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(University of Pretoria, 2014-06)Enterokinase (EK) is the main enzyme used to cleave proteins that are produced in fusion format in the expression host. Recombinant bovine and human EK are widely used in cleavage of fusion proteins, because natural enzymes ...
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(University of Pretoria, 2021)Weeds such as Palmer amaranth (Amaranthus palmeri S.Wats.) have over the years become problematic in the agricultural industry due to the proclivity to easily develop resistance to multiple herbicides. Reports of herbicide ...
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(University of Pretoria, 2021)Themeda triandra Forssk. (Poaceae) is a polymorphic species, with some forms that grow to heights of over 2m and others that grow only up to 30cm. They have leaf colours varying from yellow-green to blue-green and even ...
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(University of Pretoria, 1996)The vegetation of the Kosi Bay Coastal Forest Reserve was classified by means of Braun-Blanquet and TWINSPAN procedures. Twelve major plant communities were identified, occurring along a gradient from the inland fresh ...
Now showing items 21-40 of 219