Metabolic engineering of sugarcane: production of a biodegradable bioplastic as a test-case. The aim of this project is to produce a commercially valuable bioplastic called PHB in transgenic sugarcane. This bioplastic has similar properties to petrochemically produced polypropylene, but is fully biodegradable. PHB has been produced in the model plant Arabidopsis thaliana at commercially viable levels. The expected outcome of high-level production of PHB in sugarcane would have significant ben ....Metabolic engineering of sugarcane: production of a biodegradable bioplastic as a test-case. The aim of this project is to produce a commercially valuable bioplastic called PHB in transgenic sugarcane. This bioplastic has similar properties to petrochemically produced polypropylene, but is fully biodegradable. PHB has been produced in the model plant Arabidopsis thaliana at commercially viable levels. The expected outcome of high-level production of PHB in sugarcane would have significant benefits to the Australian sugar industry, the rural economy, and the Australian environment.Read moreRead less
In vitro evolution of more thermostable dextranases for the Australian sugar industry. Dextrans are polysaccharides that adversely affect the productivity of sugarcane mills. The Australian sugar industry currently imports dextranases to deal with this problem but they are not heat stable so the mills have run at lower temperatures than optimal. We have isolated dextranases from thermophilic microorganisms and aim to improve their performance by generating superior heat-stable dextranases using ....In vitro evolution of more thermostable dextranases for the Australian sugar industry. Dextrans are polysaccharides that adversely affect the productivity of sugarcane mills. The Australian sugar industry currently imports dextranases to deal with this problem but they are not heat stable so the mills have run at lower temperatures than optimal. We have isolated dextranases from thermophilic microorganisms and aim to improve their performance by generating superior heat-stable dextranases using in vitro evolution, creating new activity levels by random mutation and recombination. The research will be significant in providing novel enzymes for domestic use, allowing import substitution and an outcome will be the development of a product with export potential.
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Understanding and avoiding transgene silencing in sugarcane. Sugarcane is one of the world's major crops for food (sugar) and fuel (ethanol, electricity co-generation). It is one of the most appealing target crops for metabolic engineering aimed at renewable biomaterials and biofuels. Australia has invested strongly to achieve scientific leadership in gene technologies in our major export crops including sugarcane. Field tests show that development of methods to avoid unstable expression or 'sil ....Understanding and avoiding transgene silencing in sugarcane. Sugarcane is one of the world's major crops for food (sugar) and fuel (ethanol, electricity co-generation). It is one of the most appealing target crops for metabolic engineering aimed at renewable biomaterials and biofuels. Australia has invested strongly to achieve scientific leadership in gene technologies in our major export crops including sugarcane. Field tests show that development of methods to avoid unstable expression or 'silencing' of introduced genes is now a critical requirement for practical application. The current project emerges from industry recognition of the need to understand and avoid transgene silencing. The methods developed using sugarcane are expected to have rapid applicability for wider benefits in agriculture.Read moreRead less
Optimising transgene expression and stability for enhanced sugar yield and high-value sugar production in sugarcane. 'SugarBooster' technology has the potential to underpin a value-added sugarcane industry. Higher sucrose yield is a key to sustainable export profitability, and it makes the development of renewable biofuels from sugarcane more feasible. Isomaltulose has established health benefits for consumers and it is also attractive as a renewable starting material for industry. But it must c ....Optimising transgene expression and stability for enhanced sugar yield and high-value sugar production in sugarcane. 'SugarBooster' technology has the potential to underpin a value-added sugarcane industry. Higher sucrose yield is a key to sustainable export profitability, and it makes the development of renewable biofuels from sugarcane more feasible. Isomaltulose has established health benefits for consumers and it is also attractive as a renewable starting material for industry. But it must currently be produced by expensive fermentation. Efficient production in plants will open an increasing world market. This collaborative project is vital to bring these breakthrough technologies to reliable commercial implementation, in time to capture the economic benefits of the protected IP for Australia.Read moreRead less
Enhanced biocontrol options for the Australian sugar industry: a proteomic approach. Sugarcane is the second largest field crop grown in Australia and raw sugar is the third largest export product. Canegrubs are the major insect pest affecting production of sugarcane in Australia, currently costing the industry more than $12 million annually in insecticides and lost production. Biological control of insect pests provides an environmentally sound option of reducing these losses. Here we propos ....Enhanced biocontrol options for the Australian sugar industry: a proteomic approach. Sugarcane is the second largest field crop grown in Australia and raw sugar is the third largest export product. Canegrubs are the major insect pest affecting production of sugarcane in Australia, currently costing the industry more than $12 million annually in insecticides and lost production. Biological control of insect pests provides an environmentally sound option of reducing these losses. Here we propose to use proteomics to identify the key pathogenicity determinants in the biological control fungus Metarhizium during infection of canegrubs. The genes and proteins identified in this project will contribute to developing enhanced biocontrol options for Australian sugar industry.Read moreRead less
Redirecting Carbon Flow through Mesophyll and Bundle Sheath Cells of Sugarcane to Produce Poly-3-Hydroxybutyrate. This project is part of the National Priorities "Frontier Technologies for Building and Transforming Australian Industries." Using innovative plant metabolic engineering technologies combined with sophisticated computer modeling we are generating green plants that produce renewable, biodegradable, bioplastics possessing properties such that they are suitable replacements for petrol ....Redirecting Carbon Flow through Mesophyll and Bundle Sheath Cells of Sugarcane to Produce Poly-3-Hydroxybutyrate. This project is part of the National Priorities "Frontier Technologies for Building and Transforming Australian Industries." Using innovative plant metabolic engineering technologies combined with sophisticated computer modeling we are generating green plants that produce renewable, biodegradable, bioplastics possessing properties such that they are suitable replacements for petroleum-derived products in many applications. During the course of these studies, we are increasing our basic level of understanding of plant metabolism of important bioenergy crops. The production of renewable, bioplastics in sugarcane will help to diversify the Australian sugarcane industry by providing a value-added product with significant world-wide markets.Read moreRead less