Genetic architecture of species divergence and hybridisation in eucalypts. Eucalypts are an icon of Australia and are of great economic and ecological significance to the nation. They are the most widely planted hardwood trees in the world, but Australia is the centre of origin of most species and the custodian of this important native bioresource. Understanding the evolutionary processes that shape diversity in this internationally significant genus is important for its long-term management a ....Genetic architecture of species divergence and hybridisation in eucalypts. Eucalypts are an icon of Australia and are of great economic and ecological significance to the nation. They are the most widely planted hardwood trees in the world, but Australia is the centre of origin of most species and the custodian of this important native bioresource. Understanding the evolutionary processes that shape diversity in this internationally significant genus is important for its long-term management and conservation. This project links to large international initiatives currently underway for high-density mapping and sequencing of the eucalypt genome, to enhance the flow of information gained back to Australia for scientific, economic and environmental benefit.Read moreRead less
Identification And Characterisation Of Novel Genes For Congenital Cataract
Funder
National Health and Medical Research Council
Funding Amount
$432,750.00
Summary
Cataracts are the leading cause of blindness worldwide. The term describes a clouding of the lens which may lead to visual impairment. Congenital cataracts (present at birth) are less common than age-related cataract but the lifelong impact on vision can be severe, with a third of patients remaining legally blind. Late complications such as aphakic glaucoma may be blinding. We have shown that congenital cataracts are often inherited and have performed a population-based study in South-Eastern Au ....Cataracts are the leading cause of blindness worldwide. The term describes a clouding of the lens which may lead to visual impairment. Congenital cataracts (present at birth) are less common than age-related cataract but the lifelong impact on vision can be severe, with a third of patients remaining legally blind. Late complications such as aphakic glaucoma may be blinding. We have shown that congenital cataracts are often inherited and have performed a population-based study in South-Eastern Australia over the past 5 years to determine the causative genes. A large number of families have been involved in the study and solid progress has been made in identifying mutations in cataract genes and understanding what effect these may have on the patient's prognosis. We have recently identified a new gene in a large Australian family with a syndrome of cataract, mental retardation and teeth problems. This syndrome, known as Nance-Horan syndrome was originally described in Australia 30 years ago and we have worked with the original family to find the exact gene responsible. We already know that this gene causes the same syndrome in other families and in this project we will examine whether it can cause cataract without the other features or mental retardation without cataract. We will perform a series of experiments to learn what this gene does and how it causes the disease. We have also selected 3 other very interesting families with congenital cataracts for further study as we either know already or strongly suspect that they will enable us to identify further new genes for cataract, and in one case mental retardation. Our work in other diseases indicates that understanding the genes in severe young onset cases can give valuable clues to the causes of age-related forms and may in the future enable new ways to prevent and treat the commonest cause of worldwide blindness.Read moreRead less
Dissecting The Pseudoexfoliation Syndrome With Complementary Genetic, Proteomic And Biophysical Strategies
Funder
National Health and Medical Research Council
Funding Amount
$490,352.00
Summary
Pseudoexfoliation syndrome (PEX) is an eye condition in which flaky material deposits in the eye, greatly increasing the risk of cataract and glaucoma which can lead to blindness. PEX is also associated with heart disease, strokes and aneurysms. Cataract surgery in PEX patients has a higher rate of complications. In this project we will determine the nature of PEX material and why it forms. This knowlege will facilitate better diagnosis and treatment of PEX preventing associated blindness.
Contribution of hybridisation to genetic diversity and adaptation in Eucalyptus. The eucalypt gene pool is an outstandingly important bioresource for Australia. Its effective future management will be based on understanding the extent, causes and significance of genetic variation in eucalypt species. This project investigates a currently overlooked, but potentially important, source of genetic diversity and adaptation in Eucalyptus. The knowledge gained will contribute substantially to our un ....Contribution of hybridisation to genetic diversity and adaptation in Eucalyptus. The eucalypt gene pool is an outstandingly important bioresource for Australia. Its effective future management will be based on understanding the extent, causes and significance of genetic variation in eucalypt species. This project investigates a currently overlooked, but potentially important, source of genetic diversity and adaptation in Eucalyptus. The knowledge gained will contribute substantially to our understanding of eucalypt biology, and will inform decision-making for conservation, revegetation, and sustainable use of seed resources. Through addressing fundamental questions, the project will also provide a uniquely Australian contribution to world research in forest molecular genetics.Read moreRead less
The role of recombination in eucalypt evolution. Meiotic recombination is a key source of the genetic variation upon which evolution thrives. This project aims to exploit new genomic resources to provide the first detailed study of recombination in Australia’s iconic Eucalypts and clarify its evolutionary role. This project will study: variation in the rate of recombination along the 11 Eucalypt chromosomes, and determine genome features which are associated with ‘hotspots’ and ‘coldspots’ of re ....The role of recombination in eucalypt evolution. Meiotic recombination is a key source of the genetic variation upon which evolution thrives. This project aims to exploit new genomic resources to provide the first detailed study of recombination in Australia’s iconic Eucalypts and clarify its evolutionary role. This project will study: variation in the rate of recombination along the 11 Eucalypt chromosomes, and determine genome features which are associated with ‘hotspots’ and ‘coldspots’ of recombination; the patterns of variation in recombination rate between species, genotypes, sexes and chromosomes; and, whether the environment and population history affect recombination and thus evolvability of natural populations.Read moreRead less
Function and evolution of insect odorant receptors. This project aims to shed light on how insect odorant receptors function by using comparative genomic studies between the genetic model insect Drosophila melanogaster and a pest species, the Australian sheep blowfly. This project expects to generate knowledge of how specific chemicals activate specific receptors in order to excite sensory neurons and drive behaviour, which is not well understood. Expected outcomes include increased understandin ....Function and evolution of insect odorant receptors. This project aims to shed light on how insect odorant receptors function by using comparative genomic studies between the genetic model insect Drosophila melanogaster and a pest species, the Australian sheep blowfly. This project expects to generate knowledge of how specific chemicals activate specific receptors in order to excite sensory neurons and drive behaviour, which is not well understood. Expected outcomes include increased understanding of olfaction in insects, increased national and international collaboration, and outstanding graduate student training. This research will be of significant future benefit in deriving methods to modify the behaviour of insects of agricultural or medical importance, for example the sheep blowfly. Read moreRead less
Quantitative genetics of Eucalyptus globulus. Eucalypt plantations in Australia have expanded rapidly over the last decade. With increasing market competition from overseas plantations for both pulp and solid wood products, Australia must maintain a competitive edge through efficiencies in production and product quality. Breeding and deployment of genetically superior planting stock is part of the solution. With global climate chance and requirements for re-afforestation in drier zones, there ....Quantitative genetics of Eucalyptus globulus. Eucalypt plantations in Australia have expanded rapidly over the last decade. With increasing market competition from overseas plantations for both pulp and solid wood products, Australia must maintain a competitive edge through efficiencies in production and product quality. Breeding and deployment of genetically superior planting stock is part of the solution. With global climate chance and requirements for re-afforestation in drier zones, there is an increasing requirement to genetically improve drought tolerance. This project will provide genetic information and strategies to back Eucalyptus globulus breeding and deployment programs for traditional as well as drier environments. Read moreRead less
Redefining the molecular mechanism underlying crustacean metamorphosis. This project uses the astonishing lifecycle of lobster larvae to better define the pathways and discover the key genes that regulate crustacean metamorphosis. Where, when, why and how metamorphosis occurs in crustaceans are important factors affecting fisheries recruitment and aquaculture production. The project suggests that the current accepted paradigm for the molecular control of metamorphosis does not apply to lobsters ....Redefining the molecular mechanism underlying crustacean metamorphosis. This project uses the astonishing lifecycle of lobster larvae to better define the pathways and discover the key genes that regulate crustacean metamorphosis. Where, when, why and how metamorphosis occurs in crustaceans are important factors affecting fisheries recruitment and aquaculture production. The project suggests that the current accepted paradigm for the molecular control of metamorphosis does not apply to lobsters and possibly other crustaceans where larval metamorphosis and the juvenile transformation are uncoupled. Using a unique supply of cultured lobsters and advanced molecular techniques, the project aims to develop tools to trigger and synchronise metamorphosis for use in aquaculture and invasive species management.Read moreRead less
Evolutionary history and impact of adeno-associated viruses in Australia. Recently accrued evidence identifies Australia as an ideal closed-model system in which to elucidate the evolutionary history of a group of non-pathogenic viruses, known as adeno-associated viruses (AAVs). This project aims to trace back the evolutionary history of AAVs for tens of millions of years via molecular fossil imprints left behind by ancient viral invasions of Australian marsupial genomes. Concurrently, the poten ....Evolutionary history and impact of adeno-associated viruses in Australia. Recently accrued evidence identifies Australia as an ideal closed-model system in which to elucidate the evolutionary history of a group of non-pathogenic viruses, known as adeno-associated viruses (AAVs). This project aims to trace back the evolutionary history of AAVs for tens of millions of years via molecular fossil imprints left behind by ancient viral invasions of Australian marsupial genomes. Concurrently, the potential impact that these viral invasions had on the evolutionary development of their ancestral hosts will be investigated. This could facilitate previously unattainable insights into both AAV and marsupial evolution, with broader implications relevant to the advancement of the fields of virology and mammalian evolution.Read moreRead less
Evolution, disease and extinction - using ancient and modern Deoxyribonucleic acid (DNA) to investigate molecular evolution in the Tasmanian devil. The Tasmanian devil is Australia's largest living marsupial carnivore and one of Tasmania's key tourism icons. Extinction in the wild will have long-term impacts on Tasmanian native ecosystems and economy. This study will provide critical genetic data and tools to monitor and prioritise conservation strategies, including insurance populations and dis ....Evolution, disease and extinction - using ancient and modern Deoxyribonucleic acid (DNA) to investigate molecular evolution in the Tasmanian devil. The Tasmanian devil is Australia's largest living marsupial carnivore and one of Tasmania's key tourism icons. Extinction in the wild will have long-term impacts on Tasmanian native ecosystems and economy. This study will provide critical genetic data and tools to monitor and prioritise conservation strategies, including insurance populations and disease suppression, aimed at preventing extinction. It will strengthen ongoing conservation programs carried out by the Save the Tasmanian Devil Program and will help publicise the plight of the devil both nationally and internationally.Read moreRead less