Browsing Philosophiae Doctor - PhD (Biotechnology) by Title
Now showing items 70-89 of 98
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Molecular detection and characterisation of RNA viruses of honeybees
(University of the Western Cape, 2009)Honeybees have evolved through the centuries to inhabit most parts of the world except for the extreme Polar Regions. These insects have also been susceptible to pathogens and disease which has always been part of the ... -
Molecular detection and genetic manipulation of the Black Queen Cell Virus
(University of the Western Cape, 2002)The South African isolate of the Black Queen-Cell Virus (BQCV), a honeybee virus, was previously found to have an 8550 nucleotide genome excluding the poly(A) tail. Its genome contained two ORFs, a 5'-proximal ORF encoding ... -
Molecular detection and study of Campylobacter and related microorganisms
(University of the Western Cape, 2010)Species of Campylobacter, Arcobacter and Helicobacter have been associated with various diseases in humans and animals; and chickens have been identified as a reservoir of these microorganisms. Two published techniques and ... -
A molecular investigation of the prevalence of suspected periodontopathogens and their association with preterm birth
(University of the Western Cape, 2010)More than 20 million infants in the world (15.5 % of all births) are born with low birth weight. Ninety-five % of them are in developing countries. Oral colonization of Gramnegative anaerobes has been implicated as a risk ... -
New genetic tools to engineer starch production in crops
(University of the Western Cape, 2014)Starch is a major carbohydrate reserve in many plants, providing energy during heterotrophic growth and it is contained in large amounts in staple foods such as potatoes, wheat, maize, rice, sorghum and cassava. Apart from ... -
Pharmacogenomics of solute carrier transporter genes in the Xhosa population
(University of the Western Cape, 2014)Solute carrier transporters belonging to the major facilitator family of membrane transporter are increasingly being recognized as a possible mechanism to explain inter-individual variation in drug efficacy and response. ... -
Plant natriuretic peptides - elucidation of the mechanisms of action
(University of the Western Cape, 2009)Several lines of cellular and physiological evidence have suggested the presence of a novel class of systemically mobile plant molecules that are recognized by antibodies generated against vertebrate atrial natriuretic ... -
Population structure and demographics in Nigerian populations utilizing Y-chromosome markers
(University of the Western Cape, 2014)Nigeria is peopled by ethnically and linguistically diverse populations of which little were known until the last few millennial. The absence of major natural geographical barrier increases the possibility of the populations ... -
A proteomic analysis of drought and salt stress responsive proteins of different sorghum varieties
(University of the Western Cape, 2009)This study reports on a proteomic analysis of sorghum proteomes in response to salt and hyperosmotic stresses. Two-dimensional gel electrophoresis (2DE) in combination with mass spectrometry (MS) was used to separate, ... -
A proteomic analysis of drought and salt stress responsive proteins of different sorghum varieties
(University of the Western Cape, 2009)Sorghum (Sorghum bicolorï, a drought tolerant cereal crop, is not only an important food source in the semi arid/arid regions but also a potential model for studying and gaining a better understanding of the molecular ... -
Proteomic and functional characterisation of biofilm formation in Xylophilus ampelinus
(University of the Western Cape, 2019)Xylophilus ampelinus, the causal agent of bacterial blight of grapevine, inhabits the vascular tissues of infected plants where the cells appear to form assemblages resembling biofilms. Bacterial blight of grapevine ... -
Proteomic and metabolomic characterisation of novel wine yeasts: towards the evaluation and improvements of their ability to produce aromatic sauvignon blanc wines
(University of the Western Cape, 2017)Wine yeast Saccharomyces cerevisiae and wild yeasts e.g. Torulaspora delbrueckii forms an integral part of wine production by converting relatively 'neutral' flavoured Sauvignon blanc grape must into varietal aromatic ... -
Public participation as governance the role of catchment forums in water governance Mluleki Matiwane
(2012)Catchment forums are concerned groups of people that come together on a voluntary basis in a specific area. They share the same goal and purpose to achieve - sustainable water resources management. These Catchment Forums ... -
The relationship between structure and thermostability of a nitrile hydratase from Goebacillus pallidus RAPc8
(University of the Western Cape, 2008)Nitrile hydratases (NHases) are very important biocatalysts for the enzymatic conversion of nitriles to industrially important amides such as acrylamide and nicotinamide. An “ideal” NHase should fulfil several essential ... -
Respiratory and photosynthetic C and N metabolism of nodulated Lupin roots during phosphorus deficiency
(University of the Western Cape, 2010)Growth of symbiotic legume hosts is P limited, because of the high energetic requirements associated with N2 fixation. Attempts to overcome P deficiency in soils where legumes are grown involve addition of P-based fertilisers. ... -
The role of p-coumaric acid on physiological and biochemical response of chia seedling under salt stress
(University of the Western Cape, 2020)The role of phenolic acids in mitigating salt stress tolerance have been well documented. However, there are contradicting reports on the effect of exogenously applied phenolic acids on the growth and development of various ... -
Saturation sequencing, characterisation and mapping of the NBS-LRR resistance gene family in apple, Malus x domestica (Borkh)
(University of the Western Cape, 2008)To date five classes of resistance proteins have been identified in plants and these include the intracellular protein kinases, receptor-like protein kinases with extracellular leucinerich repeat (LRR) domain, LRR proteins ... -
Solution structure of the RING finger domain from the human splicing-associated protein RBBP6 using heteronuclear Nuclear Magnetic Resonance (NMR) spectroscopy
(2009)Retinoblastoma-binding protein 6 (RBBP6) is a multi-domain human protein known to play a role in mRNA splicing, cell cycle control and apoptosis. The protein interacts with tumour suppressor proteins p53 and pRb and recent ... -
Structural and functional characterisation of a novel signalling molecule in Arabidopsis thaliana
(2011)Nitric Oxide (NO) influences a wide range of physiological processes in plants including growth and development, responses to abiotic and biotic stress and pathogen responses. NO binds to the heme group of the mammalian ... -
Structural and functional studies of XvPrx2, a type II peroxiredoxin protein from the resurrection plant xerophyta viscosa
(University of the Western Cape, 2012)XvPrx2 is a 1-Cys-containing member of the Prx5 subfamily of peroxiredoxins isolated from the resurrection plant Xerophyta viscosa. It is reported to be up-regulated during periods of desiccation and to protect nucleic ...