The microbiology and biotechnology of rum production. Rum is an alcoholic beverage produced by microbial fermentation of molasses waste from the sugar industry. The microbial species responsible for the process determine rum flavour and quality by production of specific aroma compounds. The rate and extent of fermentation determine process efficiency. Several yeast and bacterial species contribute to rum fermentation but this ecology is poorly defined. Through a combination of ecological stu ....The microbiology and biotechnology of rum production. Rum is an alcoholic beverage produced by microbial fermentation of molasses waste from the sugar industry. The microbial species responsible for the process determine rum flavour and quality by production of specific aroma compounds. The rate and extent of fermentation determine process efficiency. Several yeast and bacterial species contribute to rum fermentation but this ecology is poorly defined. Through a combination of ecological studies, controlled fermentations and distillation, chemical and sensory analyses, this project will determine the impact of particular microbial species on rum flavour and process efficiency. This information will be used by the industrial partner to enchance product quality and process efficiency.Read moreRead less
Developing an integrated device for on-farm detection of sugarcane diseases. Pathogenic organisms cause yield losses of more than $150M pa to the Australian sugarcane industry and many millions more worldwide. Partnering with Sugar Research Australia, this project aims to develop a novel on-farm diagnostic device, comprising new nanotechnology and magnetism-induced microfluidics with naked eye observation and electrochemical detection. This device is expected to enable improved disease managemen ....Developing an integrated device for on-farm detection of sugarcane diseases. Pathogenic organisms cause yield losses of more than $150M pa to the Australian sugarcane industry and many millions more worldwide. Partnering with Sugar Research Australia, this project aims to develop a novel on-farm diagnostic device, comprising new nanotechnology and magnetism-induced microfluidics with naked eye observation and electrochemical detection. This device is expected to enable improved disease management strategies through the prediction of potential risks and rapid and effective actions to mitigate impending yield loss. In turn productivity and sustainability of Australia’s sugar industry will be enhanced. The new platform device has great potential for improved disease management in other crops in Australia and globally.Read moreRead less
Metabolic engineering of Zymomonas mobilis for higher value fermentation products. This project will provide an opportunity to revolutionise the Australian chemical and sugar industries. Unlike the traditional methods of the petrochemical industry, bioconversion of carbohydrates to chemicals such as succinic acid via fermentation is cosiderably environmental friendly. For the sugar industry this project will provide an opportunity to produce not only conventional sugar products but also high val ....Metabolic engineering of Zymomonas mobilis for higher value fermentation products. This project will provide an opportunity to revolutionise the Australian chemical and sugar industries. Unlike the traditional methods of the petrochemical industry, bioconversion of carbohydrates to chemicals such as succinic acid via fermentation is cosiderably environmental friendly. For the sugar industry this project will provide an opportunity to produce not only conventional sugar products but also high value commodities via the process integration of succinic acid production using agricultural residues such as bagasse. This will contribute to significant levels of job creation in Australia, and further benefits will be that such products will be important both for import replacement and export potential.Read moreRead less
A New Window into Transgene Silencing in Plants: mechanisms of copy-number independent, 5' sequence dependent, post-transcriptional silencing in a complex polyploid. Silencing of introduced genes is a major problem limiting plant molecular improvement. Sugarcane, a complex polyploid, shows the most efficient transgene silencing ever observed in plants. Silencing operates on the RNA, depends on the upstream sequence of the gene, and is independent of copy number. Other plant species develop endop ....A New Window into Transgene Silencing in Plants: mechanisms of copy-number independent, 5' sequence dependent, post-transcriptional silencing in a complex polyploid. Silencing of introduced genes is a major problem limiting plant molecular improvement. Sugarcane, a complex polyploid, shows the most efficient transgene silencing ever observed in plants. Silencing operates on the RNA, depends on the upstream sequence of the gene, and is independent of copy number. Other plant species develop endopolyploidy with age, and show unpredictable or patchy silencing. We speculate that differential silencing is a natural control mechanism in the exploitation of polyploidy in plants. The sugarcane system provides an exceptional opportunity to identify the sequences that trigger and protect from silencing, and to develop approaches to avoid the problem.Read moreRead less
Metabolic engineering to develop recombinant Zymomonas mobilis for the production of fuel ethanol and fermentation chemicals. This project will provide an opportunity to revolutionise the Australian chemical and sugar industries. Unlike the traditional methods of the petrochemical industry, bioconversion of carbohydrates to chemicals, such as succinic acid via fermentation is more considerably environmentally friendly. For the sugar industry this project will provide an opportunity to produce no ....Metabolic engineering to develop recombinant Zymomonas mobilis for the production of fuel ethanol and fermentation chemicals. This project will provide an opportunity to revolutionise the Australian chemical and sugar industries. Unlike the traditional methods of the petrochemical industry, bioconversion of carbohydrates to chemicals, such as succinic acid via fermentation is more considerably environmentally friendly. For the sugar industry this project will provide an opportunity to produce not only conventional sugar products but also high value commodities via the process integration of succinic acid production using agricultural residues, such as bagasse. This will contribute to significant levels of job creation in Australia, with the further benefit that such products will be important for both import replacement and export potential.Read moreRead less
Modification of lignin biosynthesis in sugarcane for the improved efficiency of pre-treatment in ethanol production. Sugarcane is one of Australia's most important rural industries. However, as a single product industry, declining sugar prices threaten the industry's long term economic sustainability unless alternative markets for sugarcane are created. Utilising the sugarcane waste for cellulosic ethanol would provide a new revenue stream, injecting life into the Australian sugarcane industry. ....Modification of lignin biosynthesis in sugarcane for the improved efficiency of pre-treatment in ethanol production. Sugarcane is one of Australia's most important rural industries. However, as a single product industry, declining sugar prices threaten the industry's long term economic sustainability unless alternative markets for sugarcane are created. Utilising the sugarcane waste for cellulosic ethanol would provide a new revenue stream, injecting life into the Australian sugarcane industry. In addition, cellulosic ethanol from sugarcane has the potential to substantially decrease the cost of biofuel production and significantly reduce greenhouse gas emissions. The research proposed here will advance our ability to improve sugarcane through biotechnology.Read moreRead less
Plant transformation: exploiting anti-apoptosis genes for very high efficiency transformation. Crop improvement through genetic modification depends on the ability to transform target species. The most desirable method is Agrobacterium mediated transformation. However, plant species and cultivars differ significantly in their ability to be efficiently transformed by Agrobacterium. This is particularly true for the economically important cereals. We have discovered that anti-apoptosis genes, whic ....Plant transformation: exploiting anti-apoptosis genes for very high efficiency transformation. Crop improvement through genetic modification depends on the ability to transform target species. The most desirable method is Agrobacterium mediated transformation. However, plant species and cultivars differ significantly in their ability to be efficiently transformed by Agrobacterium. This is particularly true for the economically important cereals. We have discovered that anti-apoptosis genes, which inhibit programmed cell death, dramatically increase the Agrobacterium transformation efficiency in bananas and sugarcane. We will utilise this information and develop the use of these genes to increase the efficiency of transformation in those crops and cultivars that are difficult to transform using Agrobacterium.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE120101549
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Creating a baker's yeast chassis cell via shikimate pathway engineering for production of sustainable, carbon-neutral plastic precursors for the future. From air bags to carpets, tyres and garden hoses, plastics shape our every day life. Coming from fossil fuels most are currently neither sustainable nor renewable. This project will engineer baker's yeast to produce plastic precursors from cane sugar in a fermentation process. This lays the basis for a sugar cane based chemical industry.
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
Optimization of Transgene Expression in Sugarcane. Sugarcane is one of Australia's most important crops. However, worldwide competition and declining sugar prices threaten the long term economic sustainability of this industry unless alternative markets for sugarcane are created. Biotechnology holds the greatest promise for the development of an economically sustainable sugarcane industry through the production of varieties that can be used for cellulosic ethanol or as biofactories for high-valu ....Optimization of Transgene Expression in Sugarcane. Sugarcane is one of Australia's most important crops. However, worldwide competition and declining sugar prices threaten the long term economic sustainability of this industry unless alternative markets for sugarcane are created. Biotechnology holds the greatest promise for the development of an economically sustainable sugarcane industry through the production of varieties that can be used for cellulosic ethanol or as biofactories for high-value alternative products. In addition, cellulosic ethanol from sugarcane has the potential to substantially decrease the cost of biofuel production and significantly reduce greenhouse gas emissions. The research proposed here will advance our ability to improve sugarcane through biotechnology.Read moreRead less