Functional analysis of Bacillus thuringiensis crystal toxins. Pore-forming toxins, such as anthrax, hemolysin, cholera and diphtheria toxins, are among the most virulent microbial toxins, posing a threat to humans and lifestock. We are using a novel functional approach to test possible lectin and antimicrobial peptide functions of a typical and economically important pore-forming toxin, the crystal endotoxin from Bacillus thuringiensis, to examine why toxicity of the lectin-containing toxin is ....Functional analysis of Bacillus thuringiensis crystal toxins. Pore-forming toxins, such as anthrax, hemolysin, cholera and diphtheria toxins, are among the most virulent microbial toxins, posing a threat to humans and lifestock. We are using a novel functional approach to test possible lectin and antimicrobial peptide functions of a typical and economically important pore-forming toxin, the crystal endotoxin from Bacillus thuringiensis, to examine why toxicity of the lectin-containing toxin is restricted to invertebrates only, while the amphipathic peptide alone is also toxic to many vertebrate cells. The outcome of these experiments has important implications for the sustainable use of biopesticides and for the prevention and containment of infectious diseases.Read moreRead less
Cell-free immune reactions and suppression. Insects pests and insect vectors of diseases are managed by toxic substances, but insects have a cunning ability to persist. How pesticide-tolerant insect pests recognise and inactivate chemical and biological toxins is poorly understood. While vertebrates with a closed circulatory system use coagulation reactions mainly for wound-healing, invertebrates employ cell-free aggregation reactions for the sequestration and inactivation of potentially damagin ....Cell-free immune reactions and suppression. Insects pests and insect vectors of diseases are managed by toxic substances, but insects have a cunning ability to persist. How pesticide-tolerant insect pests recognise and inactivate chemical and biological toxins is poorly understood. While vertebrates with a closed circulatory system use coagulation reactions mainly for wound-healing, invertebrates employ cell-free aggregation reactions for the sequestration and inactivation of potentially damaging objects and substances. We use insect plasma to dissect recognition and inactivation of damaging objects and substances with the aim to understand tolerance and its inhibition to design novel strategies in delaying tolerance to pesticides in insect pests.Read moreRead less
Cell wall structure and dynamics in emerging fungal pathogens of crops. The project aims to understand the role of fungal cell wall biosynthetic enzymes in cell wall stability. The fungal cell wall is a dynamic structure whose composition constantly changes in response to biotic and abiotic stresses and at different developmental stages. The devastating fungal crop pathogen Fusarium graminearum is responsible for the head blight disease in cereals. The project aims to understand the molecular ev ....Cell wall structure and dynamics in emerging fungal pathogens of crops. The project aims to understand the role of fungal cell wall biosynthetic enzymes in cell wall stability. The fungal cell wall is a dynamic structure whose composition constantly changes in response to biotic and abiotic stresses and at different developmental stages. The devastating fungal crop pathogen Fusarium graminearum is responsible for the head blight disease in cereals. The project aims to understand the molecular events that govern metabolism and dynamics of the cell wall of F. graminearum. The project also plans to characterise the molecular interactions involved in plant defence against fungal pathogens and fungal responses to plant immune factors called defensins. Expected long-term outcomes include the development of novel strategies for disease control and crop protection.Read moreRead less
How we remember and misremember traumatic experiences. The project addresses a significant and important problem: the role of memory distortion in Post Traumatic Stress Disorder (PTSD), a global disorder with significant personal, societal and economic costs. The aim of this project is to empirically investigate the extent, causes and triggering conditions of errors in memory for traumatic experiences; particularly exaggeration of these memories, which has been linked to poor psychological adjus ....How we remember and misremember traumatic experiences. The project addresses a significant and important problem: the role of memory distortion in Post Traumatic Stress Disorder (PTSD), a global disorder with significant personal, societal and economic costs. The aim of this project is to empirically investigate the extent, causes and triggering conditions of errors in memory for traumatic experiences; particularly exaggeration of these memories, which has been linked to poor psychological adjustment. Understanding how people exposed to trauma remember, and misremember, aspects of their experiences in ways that influence their recovery is both theoretically and practically important. Indeed, it will help us refine theory and identify possible points of intervention for PTSD sufferers.Read moreRead less
Nutritional ecology of predatory arthropods: molecular analysis of gut contents to elucidate prey choice and diet breadth. The evolution of genetic resistance in insect pest populations against synthetic and biological pesticides requires new integrated pest management strategies with increasingly large biological control components. This is the only sustainable approach to pest management in agricultural production and natural ecosystems. Biological control of insect pests can potentially be ac ....Nutritional ecology of predatory arthropods: molecular analysis of gut contents to elucidate prey choice and diet breadth. The evolution of genetic resistance in insect pest populations against synthetic and biological pesticides requires new integrated pest management strategies with increasingly large biological control components. This is the only sustainable approach to pest management in agricultural production and natural ecosystems. Biological control of insect pests can potentially be achieved with indigenous generalist predators, thereby reducing the risks associated with importing exotic natural enemies. This project provides new opportunities for enhancing biological control by examining the diets of generalist predators using new diagnostic technologies. This is crucial for the effective and reliable use of predators in biological control.Read moreRead less
Asymmetric Synthesis and Biological Evaluation of Bioactive Alkaloids and their Analogues. We propose to develop innovative methods for preparing bioactive natural products and their analogues with potential applications as new and safer therapeutic drugs and agricultural chemicals. This project would make important scientific contributions to the advancement of the fundamentals of synthetic organic chemistry and contribute to Australia's development as a knowledge-based economy. The methodolo ....Asymmetric Synthesis and Biological Evaluation of Bioactive Alkaloids and their Analogues. We propose to develop innovative methods for preparing bioactive natural products and their analogues with potential applications as new and safer therapeutic drugs and agricultural chemicals. This project would make important scientific contributions to the advancement of the fundamentals of synthetic organic chemistry and contribute to Australia's development as a knowledge-based economy. The methodology and products developed may have potential pharmaceutical and agricultural applications from which the country could benefit from in the future. This project would help developed skilled people that may develop innovative outcomes in the future, especially in the developing pharmaceutical and biotechnology industries in Australia.Read moreRead less
Political economy of distortions to global agricultural markets. Farmers, agribusiness and governments in Australia and other food-exporting nations have put enormous efforts into seeking reductions in agricultural protectionism, particularly in the past two decades via the Cairns Group in GATT/WTO negotiations but also in bilateral and regional integration initiatives. Yet levels of protection have fallen little for agriculture relative to manufacturing in high-income countries, and in some new ....Political economy of distortions to global agricultural markets. Farmers, agribusiness and governments in Australia and other food-exporting nations have put enormous efforts into seeking reductions in agricultural protectionism, particularly in the past two decades via the Cairns Group in GATT/WTO negotiations but also in bilateral and regional integration initiatives. Yet levels of protection have fallen little for agriculture relative to manufacturing in high-income countries, and in some newly industrializing countries that indicator has been rising. Improving our understanding as to why that is the case will ensure Australia gets a better return from its investment in that area of commercial diplomacy.Read moreRead less
Stereoselective Synthesis of Bioactive Alkaloids for Structure Elucidation and Drug Discovery. It is proposed to develop innovative methods for preparing bioactive natural products and their analogues with potential applications as new and safer therapeutic drugs and agricultural chemicals. This project would make important scientific contributions to the advancement of the fundamentals of synthetic organic chemistry and contribute to Australia's development as a knowledge-based economy. The m ....Stereoselective Synthesis of Bioactive Alkaloids for Structure Elucidation and Drug Discovery. It is proposed to develop innovative methods for preparing bioactive natural products and their analogues with potential applications as new and safer therapeutic drugs and agricultural chemicals. This project would make important scientific contributions to the advancement of the fundamentals of synthetic organic chemistry and contribute to Australia's development as a knowledge-based economy. The methodology and products developed are likely to have potential pharmaceutical and agricultural applications from which the country could benefit in the future. This project will train skilled people who may develop innovative outcomes in the future, especially in the developing pharmaceutical and biotechnology industries in Australia.Read moreRead less
Large Scale Production of Stemona Alkaloids for Agricultural Applications and New Drug Discovery. The Stemona alkaloids form a large group of natural products that have significant potential as agricultural and pharmaceutical drugs. Extracts of these natural products have many applications in traditional medicine and as insecticides in Asia. We propose to develop innovative methods for the large scale production and synthesis of these bioactive alkaloids. The methodology and products developed ....Large Scale Production of Stemona Alkaloids for Agricultural Applications and New Drug Discovery. The Stemona alkaloids form a large group of natural products that have significant potential as agricultural and pharmaceutical drugs. Extracts of these natural products have many applications in traditional medicine and as insecticides in Asia. We propose to develop innovative methods for the large scale production and synthesis of these bioactive alkaloids. The methodology and products developed may have potential pharmaceutical and agricultural applications from which the country could benefit in the future. This project would help develop skilled people who may produce innovative outcomes in the future, especially in the developing pharmaceutical and biotechnology industries in Australia.Read moreRead less
Non-linear modelling for predicting patient presentation rates for mass-gatherings. Mass-gatherings are events where crowds gather. Access to health care at these events is critical, though difficult. Complex interrelationships exist between characteristics of events and presenting patient profiles. To prevent overwhelming local hospital and emergency services it is important to accurately predict patient volume. A predictive model constructed through linear modelling has been widely used. Key f ....Non-linear modelling for predicting patient presentation rates for mass-gatherings. Mass-gatherings are events where crowds gather. Access to health care at these events is critical, though difficult. Complex interrelationships exist between characteristics of events and presenting patient profiles. To prevent overwhelming local hospital and emergency services it is important to accurately predict patient volume. A predictive model constructed through linear modelling has been widely used. Key features affecting patient presentations are non-linear in character and non-linear modelling may provide more accurate patient predictive models. This project provides prospective analysis of data to develop a non-linear predictive model.Read moreRead less