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
Enhancement of plant proteinase inhibitors for the protection of crop plants against insect attack. The aim of this project is to characterise the interactions between various known plant proteinase inhibitors and the major digestive enzymes of insects by structural and dynamic studies and to utilise mutational studies to design new inhibitors that more effectively bind to target proteinases. The outcomes will be the knowledge to design specific inhibitors to give optimal inhibition of specific ....Enhancement of plant proteinase inhibitors for the protection of crop plants against insect attack. The aim of this project is to characterise the interactions between various known plant proteinase inhibitors and the major digestive enzymes of insects by structural and dynamic studies and to utilise mutational studies to design new inhibitors that more effectively bind to target proteinases. The outcomes will be the knowledge to design specific inhibitors to give optimal inhibition of specific insect proteinases. This knowledge will lead to novel approaches to protect economically important crops, such as cotton, from insect pests in Australia - potentially saving tens of millions of dollars per annum in chemical pesticide use and enhancing crop production in Australia and internationally.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0347262
Funder
Australian Research Council
Funding Amount
$150,000.00
Summary
Upgrading of Wind Tunnel Research Facility with Oxford Lasers VisiSizer. Bringing together expertise within five collaborating research Centres in two Universities, an Oxford Lasers VisiSizer will be used to study the atomisation of pesticide sprays and droplet behaviour in moving flow fields. This equipment, in conjunction with the construction of a new working section in a pesticide wind tunnel research facility, will enable the simultaneous measurement of particle size and droplet velocity. T ....Upgrading of Wind Tunnel Research Facility with Oxford Lasers VisiSizer. Bringing together expertise within five collaborating research Centres in two Universities, an Oxford Lasers VisiSizer will be used to study the atomisation of pesticide sprays and droplet behaviour in moving flow fields. This equipment, in conjunction with the construction of a new working section in a pesticide wind tunnel research facility, will enable the simultaneous measurement of particle size and droplet velocity. The VisiSizer will construct images of the atomisation process and enable the interaction of spray droplets and plant canopies to be studied. Data will support modelling of pesticide transport processes and accelerate leading Australian expertise in pesticide science.Read moreRead less
Minimising environmental and public health risk of pesticide application through understanding the droplet-canopy interface. Pesticides are essential tools for agricultural industries in most Australian cropping systems. Accurate placement of pesticide droplets onto plant surfaces is the key step in guaranteeing high quality food production, while loss of droplets to air and soil are inefficiencies leading to environmental and public health risks. Innovations in plant architecture informatics wi ....Minimising environmental and public health risk of pesticide application through understanding the droplet-canopy interface. Pesticides are essential tools for agricultural industries in most Australian cropping systems. Accurate placement of pesticide droplets onto plant surfaces is the key step in guaranteeing high quality food production, while loss of droplets to air and soil are inefficiencies leading to environmental and public health risks. Innovations in plant architecture informatics will be used to develop an improved understanding of droplet/plant canopy interactions that will be validated through wind tunnel experimentation. This research will result in a risk assessment tool that can be applied generally to controlled spray applications of pesticides.Read moreRead less
Kinetics of phytochemical adsorption and desorption in clay nanoparticles. Biologically active phytochemicals are of increasing importance in many areas of human endeavour. There is a growing interest in the agricultural uses of such compounds. A major limiting factor has been the control of the release rate and the general susceptibility to UV breakdown. This project aims to develop a platform technology for the controlled release and for improved UV protection of these chemicals. Through the s ....Kinetics of phytochemical adsorption and desorption in clay nanoparticles. Biologically active phytochemicals are of increasing importance in many areas of human endeavour. There is a growing interest in the agricultural uses of such compounds. A major limiting factor has been the control of the release rate and the general susceptibility to UV breakdown. This project aims to develop a platform technology for the controlled release and for improved UV protection of these chemicals. Through the studies on the adsorption and desorption kinetics of select phytochemicals, we aim to develop a nanoparticle clay based carrier system and a predictive model for control of the desorption characteristics. Such a platform technology will enable wide range of applications of phytochemical products in pesticides, plant stress alleviating and growth enhancing areas.Read moreRead less
Development of eco-friendly alternatives for crop pest management. This project will produce novel insecticides to protect cotton and other crops from a range of economically damaging pests. It will lead to a more sustainable and eco-friendly cotton industry by reducing the dependence on chemical insecticides and genetically modified cotton plants.