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Actin cytoskeleton regulation by E-cadherin and Src. This project examines a fundamental, novel mechanism of how cells work together in tissues. It will provide important new knowledge about how tissues become organized in health, and how organization might be disturbed in disease. It will build Australia's skill base in cutting-edge scientific research, and promote knowledge directed to the research priority area of Promoting and Maintaining Good Health.
How the Y Chromosome makes a male: Molecular genetic analysis of key sex-determining genes. Sex reversal and intersex syndromes are among the most common and highly stigmatized disorders affecting newborn babies. Our research will reveal how the Y chromosome regulates normal male development, identify the steps that go wrong in many male babies, and suggest ways to diagnose and deal with these conditions. It will also pave the way for biotechnological applications in the areas of stem cell techn ....How the Y Chromosome makes a male: Molecular genetic analysis of key sex-determining genes. Sex reversal and intersex syndromes are among the most common and highly stigmatized disorders affecting newborn babies. Our research will reveal how the Y chromosome regulates normal male development, identify the steps that go wrong in many male babies, and suggest ways to diagnose and deal with these conditions. It will also pave the way for biotechnological applications in the areas of stem cell technology, pest management, wildlife conservation and animal breeding.Read moreRead less
MOLECULAR GENETICS OF MAMMALIAN SEXUAL DEVELOPMENT: Molecular roles of SRY and SOX9. The development of sexual characteristics is critical to the survival of almost all animal species. This project seeks to clarify how male and female embryos develop differently, focusing on the Y-chromosome maleness gene Sry, and a closely related and equally important gene Sox9. We will study how these genes are switched on in developing gonads and how they interact with other genes to bring about testis forma ....MOLECULAR GENETICS OF MAMMALIAN SEXUAL DEVELOPMENT: Molecular roles of SRY and SOX9. The development of sexual characteristics is critical to the survival of almost all animal species. This project seeks to clarify how male and female embryos develop differently, focusing on the Y-chromosome maleness gene Sry, and a closely related and equally important gene Sox9. We will study how these genes are switched on in developing gonads and how they interact with other genes to bring about testis formation in male embryos. In this way we will discover new genes and mechanisms that are important for sexual identity and also other aspects of embryo development.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
Targeting and stabilizing proteins in sugar storage vacuoles for metabolic engineering in sugarcane. We have isolated a novel gene for an enzyme that efficiently converts sucrose into a product of much higher value. We have shown that the enzyme functions in sugarcane, a first example of the potential for new biosynthetic capacities in this highly productive crop. Because 90% of stored sucrose is in specialized vacuoles, the enzyme needs to be directed into these vacuoles, and made stable and ac ....Targeting and stabilizing proteins in sugar storage vacuoles for metabolic engineering in sugarcane. We have isolated a novel gene for an enzyme that efficiently converts sucrose into a product of much higher value. We have shown that the enzyme functions in sugarcane, a first example of the potential for new biosynthetic capacities in this highly productive crop. Because 90% of stored sucrose is in specialized vacuoles, the enzyme needs to be directed into these vacuoles, and made stable and active there. This is feasible by building on recent discoveries about vacuolar targeting in plants. The outputs include scientific understanding to underpin metabolic engineering in plants, and a profitable high-technology export industry for Australia.Read moreRead less
A new paradigm of gene regulation - implications in embryogenesis and disease. The proposed analysis of a new paradigm of gene regulation will provide a new key to understanding genome function and inform some of the most compelling biological issues of our time such as stem cell biology, tissue and organ regeneration and genetic programming. The insights and technologies developed in this program will be widely applicable in biotechnological and pharmacogenomic research in Australia and worldwi ....A new paradigm of gene regulation - implications in embryogenesis and disease. The proposed analysis of a new paradigm of gene regulation will provide a new key to understanding genome function and inform some of the most compelling biological issues of our time such as stem cell biology, tissue and organ regeneration and genetic programming. The insights and technologies developed in this program will be widely applicable in biotechnological and pharmacogenomic research in Australia and worldwide, and assert Australia's leadership in this area of research.Read moreRead less
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
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