Environmental Control of Developmental Plasticity of Vertebrate Cardio-Pulmonary Systems. Our research will generate the first comprehensive picture of how environmental conditions are transduced to control the development of the vertebrate respiratory and cardiovascular systems over the perinatal period. The research will demonstrate how physiological systems are modified and hence evolve. Moreover, understanding the developmental pathology in embryos induced by changing environmental condition ....Environmental Control of Developmental Plasticity of Vertebrate Cardio-Pulmonary Systems. Our research will generate the first comprehensive picture of how environmental conditions are transduced to control the development of the vertebrate respiratory and cardiovascular systems over the perinatal period. The research will demonstrate how physiological systems are modified and hence evolve. Moreover, understanding the developmental pathology in embryos induced by changing environmental conditions (especially exposure to steroid-like pollutants) is crucial to support breeding programs of endangered species and may improve veterinary and medicinal treatment of premature animals and humans. This multi-disciplinary, international collaboration provides an international training ground and two-way exchange of students and postdocs.Read moreRead less
Coping With Pressure: Respiratory Biology of Marine Mammals. Many marine mammals undergo severe, protracted lung collapse during deep dives. They also exhibit prolonged periods of apnea during sleep. In humans, lung collapse and sleep apnea both represent severe respiratory dysfunction. Pulmonary surfactant, a complex mixture that lines the lung, stabilises the lungs in terrestrial mammals, preventing lung collapse. Here, we propose a comprehensive examination of respiratory function in marine m ....Coping With Pressure: Respiratory Biology of Marine Mammals. Many marine mammals undergo severe, protracted lung collapse during deep dives. They also exhibit prolonged periods of apnea during sleep. In humans, lung collapse and sleep apnea both represent severe respiratory dysfunction. Pulmonary surfactant, a complex mixture that lines the lung, stabilises the lungs in terrestrial mammals, preventing lung collapse. Here, we propose a comprehensive examination of respiratory function in marine mammals. This study will significantly advance our knowledge of the diving physiology of Australian marine mammals. A detailed examination of the respiratory and surfactant systems of marine mammals may also reveal adaptations that enable these animals to endure sleep apnea and lung collapse.Read moreRead less
Defining New Building Blocks for the Construction of Artificial Genetic Circuits. By characterising the components of a natural genetic switch, we will make available a set of well defined genetic building blocks for construction of rationally designed biological circuits. The ability to build such circuits would have significant economic benefit in areas such as metabolic engineering, to improve the efficiency of production of natural compounds from micro-organisms, and in biomedicine, for the ....Defining New Building Blocks for the Construction of Artificial Genetic Circuits. By characterising the components of a natural genetic switch, we will make available a set of well defined genetic building blocks for construction of rationally designed biological circuits. The ability to build such circuits would have significant economic benefit in areas such as metabolic engineering, to improve the efficiency of production of natural compounds from micro-organisms, and in biomedicine, for the controlled release of therapeutic compounds. The involvement of Honours and Ph.D students in this project will expose the next generation of Australian scientists to this emerging discipline. International collaboration leading to publications in high impact scientific journals will enhance Australia's scientific reputation.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0668093
Funder
Australian Research Council
Funding Amount
$115,000.00
Summary
Expansion and enhancement of the South Australian Regional Facility for Molecular Ecology and Evolution and the Australian Centre Ancient DNA. Provision of dedicated instruments for contemporary and ancient/fragmentary DNA analyses will provide numerous opportunities for innovative research solutions in basic biology, archaeological, agricultural, biomedical, forensic and environmental sciences. No similar combination of facilities currently exists in the Australian region severely curtailing an ....Expansion and enhancement of the South Australian Regional Facility for Molecular Ecology and Evolution and the Australian Centre Ancient DNA. Provision of dedicated instruments for contemporary and ancient/fragmentary DNA analyses will provide numerous opportunities for innovative research solutions in basic biology, archaeological, agricultural, biomedical, forensic and environmental sciences. No similar combination of facilities currently exists in the Australian region severely curtailing and jeopardising the quality of current and proposed research programs. The facilities will underlie innovative approaches to research in National Research Priorities 1 and 4 - An Environmentally Sustainable Australia and Safeguarding AustraliaRead moreRead less
What's bred in bone: effects of thyroid hormone supplementation on bone growth and remodelling in ectotherms and endotherms. Influence of resting metabolic rate (RMR) and exercise activity on bone microstructure is investigated in a variety of amniote taxa. By varying the dose of supplemental triiodothyronine (T3), ectotherms are made hyperthyroid with elevated RMR, and endotherms - hypothyroid with depressed RMR. Effects of T3 are compared against those of mechanical loading, in form of increa ....What's bred in bone: effects of thyroid hormone supplementation on bone growth and remodelling in ectotherms and endotherms. Influence of resting metabolic rate (RMR) and exercise activity on bone microstructure is investigated in a variety of amniote taxa. By varying the dose of supplemental triiodothyronine (T3), ectotherms are made hyperthyroid with elevated RMR, and endotherms - hypothyroid with depressed RMR. Effects of T3 are compared against those of mechanical loading, in form of increased daily treadmill exercise. Rates of bone growth and secondary remodelling are determined by histological analysis, and correlated with T3 and bone strain levels. The study tests the hypothesis that evolution of endothermy can be inferred from bone microstructure of fossil bones.Read moreRead less
Genetic dissection of a regulatory deubiquitlyation network. The potential impact of this work is widespread, because although it is known that ubiquitlyation has regulatory consequences in multicellular eukaryotes, individual networks have not been completely described in higher eukaryotes. Knowledge gained about fundamental processes in the A. nidulans model system is directly applicable to fungi used in biotechnology in the food, beverage, enzyme and pharmaceutical production industries, and ....Genetic dissection of a regulatory deubiquitlyation network. The potential impact of this work is widespread, because although it is known that ubiquitlyation has regulatory consequences in multicellular eukaryotes, individual networks have not been completely described in higher eukaryotes. Knowledge gained about fundamental processes in the A. nidulans model system is directly applicable to fungi used in biotechnology in the food, beverage, enzyme and pharmaceutical production industries, and to fungal pathogens. Since the fungal genes that form the basis of this project are conserved in higher eukaryotes including humans, the knowledge will be transferable to these systems. A further benefit that cannot be overstated is the research education and training opportunities provided.
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Meiotic recombination in Neurospora crassa: a model for the process in humans and other multicellular eukaryotes. Genes are shuffled by recombination during meiosis in the sexual cycle of higher organisms. This is best understood in yeast. Our findings show Neurospora recombination differs from yeast recombination. It is more tolerant of sequence mismatch, differs in the relative frequencies of gene conversion and crossing over, has frequently interrupted conversion tracts and has transacting ge ....Meiotic recombination in Neurospora crassa: a model for the process in humans and other multicellular eukaryotes. Genes are shuffled by recombination during meiosis in the sexual cycle of higher organisms. This is best understood in yeast. Our findings show Neurospora recombination differs from yeast recombination. It is more tolerant of sequence mismatch, differs in the relative frequencies of gene conversion and crossing over, has frequently interrupted conversion tracts and has transacting genes controlling recombination hotspot activity. We propose to genetically dissect Neurospora recombination which appears to be a closer model for recombination in humans and other higher eukaryotes, where understanding recombination can assist control of genetic disease, efficient breeding in agriculture and our understanding of evolution.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
A new paradigm for surfactant composition and function - how do lungs cope with stress? Our research will increase the understanding of the scope of change and precise molecular interactions occurring in the surfactant lipids and proteins of animals under physiological stress. The novel insights will improve the treatment of lung diseases (such as chronic obstructive pulmonary disease and acute lung injury). We have formed a team of international surfactant researchers all experts in state-of-th ....A new paradigm for surfactant composition and function - how do lungs cope with stress? Our research will increase the understanding of the scope of change and precise molecular interactions occurring in the surfactant lipids and proteins of animals under physiological stress. The novel insights will improve the treatment of lung diseases (such as chronic obstructive pulmonary disease and acute lung injury). We have formed a team of international surfactant researchers all experts in state-of-the-art chemical and biophysical technologies relating to surfactant. These collaborations will bring new technological applications to Australia and provide outstanding cross-disciplinary training for postgraduate students and research staff at the interface between animal physiology, biophysical chemistry and respiratory medicine.Read moreRead less
A shipload of consequences: studying the impact of Old World diseases on native South American populations via ancient DNA. This pioneering project will give the first real-time picture of the genetic changes induced by epidemics in human populations. This will reveal important new information about the likely impact of future epidemics on the genetic diversity of the immune system in modern human populations and will be of substantial use in building epidemiological models. By proposing to comb ....A shipload of consequences: studying the impact of Old World diseases on native South American populations via ancient DNA. This pioneering project will give the first real-time picture of the genetic changes induced by epidemics in human populations. This will reveal important new information about the likely impact of future epidemics on the genetic diversity of the immune system in modern human populations and will be of substantial use in building epidemiological models. By proposing to combine state-of-the-art science with global problems of humanity, we will address Australia's interests in expanding scientific expertise beyond its borders and place Australia at the leading edge of disease impact studies.Read moreRead less