Characterisation of Genes involved in Secondary Metabolism in the Blackleg Pathogen of Canola. Blackleg caused by the fungus Leptosphaeria maculans is the major disease of canola. In spite of the economic importance of this fungus, little is known about its metabolic pathways, its genes and how they are organised. We have sequenced a large piece of L. maculans DNA comprising eight genes, including a regulatory gene and one that may be may be involved in producing secondary metabolites such as ....Characterisation of Genes involved in Secondary Metabolism in the Blackleg Pathogen of Canola. Blackleg caused by the fungus Leptosphaeria maculans is the major disease of canola. In spite of the economic importance of this fungus, little is known about its metabolic pathways, its genes and how they are organised. We have sequenced a large piece of L. maculans DNA comprising eight genes, including a regulatory gene and one that may be may be involved in producing secondary metabolites such as phytotoxins. We will determine the role of these genes in metabolism and the disease process, thus providing insights into secondary metabolism and gene regulation in this important plant pathogen.Read moreRead less
Using genetics to recover Australia's lost history. This project aims to use historic hair samples collected by anthropological expeditions in the early 20th Century to generate the first genetic map of Aboriginal Australia – in order to reconstruct Australia’s pre-European genetic and cultural past. The map and the detailed contextual and genealogical information from museum archives will assist Aboriginal communities and individuals to reconstruct their personal and family history and trace an ....Using genetics to recover Australia's lost history. This project aims to use historic hair samples collected by anthropological expeditions in the early 20th Century to generate the first genetic map of Aboriginal Australia – in order to reconstruct Australia’s pre-European genetic and cultural past. The map and the detailed contextual and genealogical information from museum archives will assist Aboriginal communities and individuals to reconstruct their personal and family history and trace ancestry and augment oral or written records. The combination of cutting-edge science, detailed archival research, and a comprehensive family outreach and reporting program will be a step change in assisting Australia’s reconciliation process, the Stolen Generation, and repatriation of Indigenous remains.Read moreRead less
Unravelling the contributions of Denisovan DNA to the peoples of Oceania. This project aims to investigate the impact gene flow from Denisovans, an archaic hominin species, has had on individuals from Papua New Guinea and eastern Indonesia. These people owe up to 5% of their genomes to these mysterious ancestors, but the repercussions of this finding remain poorly understood. In order to identify the biological contributions these fragments of DNA make to the individuals who carry them, this pro ....Unravelling the contributions of Denisovan DNA to the peoples of Oceania. This project aims to investigate the impact gene flow from Denisovans, an archaic hominin species, has had on individuals from Papua New Guinea and eastern Indonesia. These people owe up to 5% of their genomes to these mysterious ancestors, but the repercussions of this finding remain poorly understood. In order to identify the biological contributions these fragments of DNA make to the individuals who carry them, this project aims to combine anthropological genetics with cutting-edge functional genomics in a pioneer multidisciplinary approach. Ultimately, this project may transform our understanding of both the population and evolutionary pressures that have acted upon these groups in the past 50,000 years.Read moreRead less
Identifying genes causing thermal evolution of ectotherm body size. Cold-blooded animals increase in body size as they are found in populations at greater distances from the equator. These patterns are due to populations adapting to temperature. The aim of this project is to identify the genes involved in this adaptation process. We will do this by taking advantage of a well-studied body size cline in the vinegar fly on the east coast of Australia, and by building on an international collaborati ....Identifying genes causing thermal evolution of ectotherm body size. Cold-blooded animals increase in body size as they are found in populations at greater distances from the equator. These patterns are due to populations adapting to temperature. The aim of this project is to identify the genes involved in this adaptation process. We will do this by taking advantage of a well-studied body size cline in the vinegar fly on the east coast of Australia, and by building on an international collaboration between a leading UK and two Australian research groups. In doing so we will provide an explanation at the molecular level for one of the great unresolved phenomena in biology: why do cold-blooded animals get bigger in the cold? The research also leads to the potential to manipulate body size in animals.Read moreRead less
Genetic architecture and evolution of complex traits across populations. Most human traits have a genetic component and display substantial diversity within and among populations. How natural selection changes and maintains genetic variation in human traits is a long-standing question in evolution that the proposed project aims to answer. Using innovative statistical methods and largest genomic “big” datasets ever across populations of different ancestral backgrounds, this project expects to gen ....Genetic architecture and evolution of complex traits across populations. Most human traits have a genetic component and display substantial diversity within and among populations. How natural selection changes and maintains genetic variation in human traits is a long-standing question in evolution that the proposed project aims to answer. Using innovative statistical methods and largest genomic “big” datasets ever across populations of different ancestral backgrounds, this project expects to generate new knowledge on the roles of natural selection in shaping the genetic variation in traits and identify key factors that drive the differentiation of human populations. These outcomes will significantly improve our understanding on the evolution of human traits and adaptation of populations to changing environments.Read moreRead less
Why is most of the genetic variance for complex traits undetected by large powerful screens of common variants? The genomics revolution has made it possible to measure thousands of DNA variants in individuals. These variants have been associated with phenotypic outcomes in a range of species. Paradoxically, even very large studies have only accounted for a fraction of the resemblance between relatives that we know exist. Our study will test three specific hypotheses to explain this paradox. A be ....Why is most of the genetic variance for complex traits undetected by large powerful screens of common variants? The genomics revolution has made it possible to measure thousands of DNA variants in individuals. These variants have been associated with phenotypic outcomes in a range of species. Paradoxically, even very large studies have only accounted for a fraction of the resemblance between relatives that we know exist. Our study will test three specific hypotheses to explain this paradox. A better understanding about the genetic architecture for complex traits will improve the efficiency of gene mapping methods, including applications in humans for traits related to productive ageing and a healthy start to life, will lead to more efficient selection programs in agricultural populations and will inform us with respect to past evolutionary events.Read moreRead less
Development of molecular markers for resistance to blackleg disease (Leptosphaeria maculans) in canola. Canola (Brassica napus) is a valuable oil seed crop grown in many parts of the world and contributes annually $A450 million to the Australian economy. The overall aim of this project is to develop molecular markers for blackleg resistance using Australian germplasm along with evaluation in Australian disease nurseries which are regarded worlwide to develop the highest levels of disease pressu ....Development of molecular markers for resistance to blackleg disease (Leptosphaeria maculans) in canola. Canola (Brassica napus) is a valuable oil seed crop grown in many parts of the world and contributes annually $A450 million to the Australian economy. The overall aim of this project is to develop molecular markers for blackleg resistance using Australian germplasm along with evaluation in Australian disease nurseries which are regarded worlwide to develop the highest levels of disease pressure. Once molecular marker systems are developed and evaluated, they will be applied to facilitate the selection of Nugrain's (Industry Partner) canola breeding programs. Any molecular markers and QTL developed for Australian cultivars would find commercial application in breeding programmes.Read moreRead less
Estimation of non-additive genetic variance for complex traits using genome-wide single nucleotide polymorphyisms and sequence data. Finding genes for traits of importance in agriculture, ecology and human health depends on understanding the genetic basis of these traits. This project will investigate whether variation in traits in humans, cattle and wild sheep are influenced by gene-gene interactions.
The genetic architecture and evolution of quantitative traits. Most important traits are controlled by many genes and by the environment, however there is little knowledge of how many genes are involved in these complex traits and what their effects are. This project will describe the number of genes and their effects for complex traits in humans and livestock and explain how these genes evolve.
Breaking selective constraints: is Hsp90 a capacitor of evolutionary change? Gene action and expression can be modulated by genetic mechanisms. If a general mechanism controlling gene expression exists that can be easily manipulated it has the potential to allow animal and plant breeders to quickly produce and select for new characters of agricultural importance without relying on transgenics and long-term breeding programs. It would also assist in the development of tools for identifying and de ....Breaking selective constraints: is Hsp90 a capacitor of evolutionary change? Gene action and expression can be modulated by genetic mechanisms. If a general mechanism controlling gene expression exists that can be easily manipulated it has the potential to allow animal and plant breeders to quickly produce and select for new characters of agricultural importance without relying on transgenics and long-term breeding programs. It would also assist in the development of tools for identifying and detecting genes that increase susceptibility to human diseases, such as cancer, that are only expressed under certain conditions environmental. I intend to determine whether the protein Hsp90 represents a general mechanism controlling gene expression. Read moreRead less