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Doctoral Degrees (Genetics)
Recent Submissions
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Isolation and characterisation of novel enzymes producing fructo- and galacto-oligosaccharides through a metagenomic approach
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Prebiotic oligosaccharides and polymers are a form of dietary carbohydrate that are selectively fermented by the microbiota of the lower gastro intestinal tract and confer a health benefit to the host ... -
Genome and transcriptome sequencing of vitis vinifera cv pinotage
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Examining the genetic basis of natural phenotypic variation, and the transfer of this knowledge to a breeding program for improved crop cultivars or livestock races, is a major goal for biological ... -
Molecular analysis of plant growth promoted with low molecular weight compounds in relation to genetically altered photosynthetic carbohydrate partitioning in higher plants
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Despite the impressive advances that have been made over the years in improving both plant growth and yields, there is little reason to become complacent about these developments, especially with regard ... -
Small RNA profiling of grapevine leafroll-associated virus 3 infected grapevine plants
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: One of the most important viral diseases of grapevine worldwide is grapevine leafroll disease (GLD). A number of viruses from the family Closteroviridae have been associated with this disease, though Grapevine ... -
Functional characterization of a putative signalling peptide TAXIMIN in the model plant Arabidopsis thaliana and a medicinal plant Sutherlandia frutescens L. R. Br.
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Secondary metabolite production in plants assists with protection against predators and attraction of pollinators. Manipulation of secondary metabolite pathways towards increased production of compounds ... -
Population genetics of Galeorhinus galeus, Carcharhinus brachyurus and Rhinobatos annulatus- implications for regional fisheries and elasmobranch conservation
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Elasmobranchs (sharks, skates and rays) are highly exploited world-wide and more vulnerable than most teleosts due to their life history traits (e.g. late age at maturity, low fecundity and slow growth). ... -
Functional roles of raffinose family oligosaccharides: Arabidopsis case studies in seed physiology, biotic stress and novel carbohydrate engineering
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: The raffinose family of oligosaccharides (RFOs) are α1,6-galactosyl extensions of sucrose (Suc-Galn) unique to the plant kingdom. Their biosynthesis is mediated via α1,6-galactosyltransferases which ... -
Identification of SNPs associated with robustness and greater reproductive success in the South African merino sheep using SNP chip technology
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: Reproduction and robustness traits are integral in ensuring sustainable, efficient and profitable sheep farming. Increases in genetic gain of reproduction and robustness traits are however, hampered by ... -
Mapping and survey sequencing of Dn resistance genes in Triticum aestivum L.
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT : Diuraphis noxia Kurdjumov (Russian Wheat Aphid; RWA) is a pest of wheat and barley that has spread from its home range in the fertile crescent to most wheat producing countries except Australia. Since ... -
Small RNA profiling of virus-infected apple plants
(Stellenbosch : Stellenbosch University, 2014-12)ENGLISH ABSTRACT: Apple stem grooving virus (ASGV) is globally associated with latent infection in commercial apple trees. Little is known about this plant-‐virus interaction. This study made use of next-‐generation ... -
Elucidating functional interactions between the Russian wheat aphid (D. noxia Kurjumov) and bread wheat (Triticum aestivum L.)
(Stellenbosch : Stellenbosch University, 2014-12)ENGLISH ABSTRACT: The Russian wheat aphid (Diuraphis noxia, Kurdj., Hemipetra, Aphididae, RWA) is an important pest of wheat, causing large-scale damage and yield losses. Various studies have been done at a transcriptomics ... -
The evolutionary history of the genus Seriola and the phylogeography and genetic diversity of S. lalandi (yellowtail) across its distribution range
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: The genus Seriola includes several important commercial fish species, yet the phylogenetic relationships between species have not been fully investigated to date. This study reports the first molecular ... -
The analysis of starch degradation in Solanaceae species
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: This project involved the analysis of genes in Solanaceae species that have previously been shown to be involved in the phosphorylation of starch or its subsequent dephosphorylation. Both these processes ... -
Increasing cellulosic biomass in sugarcane
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Increased demand of petroleum, declining fossil fuel reserves, geopolitical instability and the environmentally detrimental effects of fossil fuels have stimulated research to search for alternative sources ... -
Molecular studies of galactan biosynthesis in red algae
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Sulfated galactans (agarans and carrageenans) are accumulated in the cell wall of various red algae (Rhodophyta) species. These polysaccharides are of commercial importance in the food, pharmaceutical ... -
Molecular characterisation of South African isolates of grapevine fanleaf virus and a new, associated satellite RNA
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Grapevine fanleaf virus (GFLV) is one of the oldest, most widespread and devastating viruses infecting grapevine, and occurs globally where Vitis vinifera is grown. In South Africa (SA) GFLV is predominant ... -
Signatures of selection in natural and cultured Abalone (Haliotis midae) : a population genomics study
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: The South African abalone, Haliotis midae, commonly known as perlemoen, is an economically important gastropod mollusc. Historically, this species maintained a lucrative fisheries sector; however with ... -
In silico and functional analyses of the iron metabolism pathway
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: Iron is an essential micronutrient that is an absolute requirement for correct cellular function in all eukaryotic organisms. However, ferrous iron has the ability to catalyze the formation of potentially ... -
Mannoprotein production and wine haze reduction by wine yeast strains
(Stellenbosch : Stellenbosch University, 2012-12)ENGLISH ABSTRACT: Wine protein haze formation is a major challenge for wine makers, and several wine clarifying agents such as bentonite are used in the industry to protect wine from this occurrence. However, clarifying ... -
Modulation of ascorbate peroxidase activity by nitric oxide in soybean
(Stellenbosch : Stellenbosch University, 2012-12)Salinity stress is one of the major environmental factors that lead to poor crop yield. This is due to overproduction of reactive oxygen species (ROS) which consequently lead to oxidative stress. Although these ROS may be ...
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