Understanding the evolution of the alternation of generations in the land plant life cycle. This project will investigate the genetic basis and evolution of the land plant life cycle, in which both haploid and diploid phases consist of complex multicellular bodies. The project's findings, which will be made using two model laboratory plants, will be applicable to all plants and will help understand important processes such as pollen and seed production.
The Epigenetics of Sex in the Dragon. Genetic codes do not directly translate to phenotypes -- environment acts through epigenetics to modify development. We use advanced molecular techniques to examine how epigenetics responds to temperature to reverse sex in our novel animal model, the dragon lizard. How does the cell sense temperature? Once the extrinsic signal is captured, how does it influence chromatin modification to release or suppress key genes in the sex differentiation pathway? Which ....The Epigenetics of Sex in the Dragon. Genetic codes do not directly translate to phenotypes -- environment acts through epigenetics to modify development. We use advanced molecular techniques to examine how epigenetics responds to temperature to reverse sex in our novel animal model, the dragon lizard. How does the cell sense temperature? Once the extrinsic signal is captured, how does it influence chromatin modification to release or suppress key genes in the sex differentiation pathway? Which sex genes are targets? Epigenetic enzymes are astonishingly conserved, providing exciting opportunities to draw from human systems to unravel novel signatures of temperature-induced sex switching in reptiles. This project will advance knowledge of developmental programming generally.Read moreRead less
Variation in the arginine vasopressin 1a receptor (AVPR1a) gene, the social environment, general health and wellbeing. The project aims to investigate how the arginine vasopressin 1a gene affects gene expression and influences social behaviour and ultimately health and wellbeing. This research will contribute to understanding the importance of individual differences in social policy and interventions aimed at improving health and wellbeing.
Improving the accuracy of phylogenetic reconstruction by improving models of sequence divergence. Phylogenies describe the relationships among species and provide the essential framework for understanding evolutionary processes. They are an essential tool in the identification of functionally important regions in DNA sequences. An important aspect of identifying phylogenies is measuring how DNA sequences change in time. The proposed research will develop sophisticated, practical models of sequen ....Improving the accuracy of phylogenetic reconstruction by improving models of sequence divergence. Phylogenies describe the relationships among species and provide the essential framework for understanding evolutionary processes. They are an essential tool in the identification of functionally important regions in DNA sequences. An important aspect of identifying phylogenies is measuring how DNA sequences change in time. The proposed research will develop sophisticated, practical models of sequence divergence and make them freely available in open source software. The software and models will positively impact on studies seeking to understand Australian biological diversity. The proposed resolution of the eutherian mammal orders will further significantly impact on utilisation of rodents as a model organism for human biology.Read moreRead less
Early evolution of the endomesoderm gene regulatory network. This project aims to unravel the endomesoderm gene network’s evolutionary history by identifying its conserved components’ target genes in the calcareous sponge Sycon. Little is known about the evolutionary origin of the developmental gene regulatory networks active in the development of all Eumetazoans (animals with nerves and digestive systems). Sponges are key models to study the transition from protists to eumetazoans, and gene exp ....Early evolution of the endomesoderm gene regulatory network. This project aims to unravel the endomesoderm gene network’s evolutionary history by identifying its conserved components’ target genes in the calcareous sponge Sycon. Little is known about the evolutionary origin of the developmental gene regulatory networks active in the development of all Eumetazoans (animals with nerves and digestive systems). Sponges are key models to study the transition from protists to eumetazoans, and gene expression data supports homology between sponge and eumetazoan tissues and body plans. This project could illuminate the evolutionary history of the animal body plan.Read moreRead less
Discovering sex determining genes in a reptile with genetic and environmental sex determination. Reptile sex determination is particularly fascinating because it is triggered either by genes on sex chromosomes or by the nest temperature. This project will identify and characterise candidate sex determining genes in a model reptile to understand how genes control sexual differentiation and how they interact with temperature.
Was an ancient bird-like sex chromosome system ancestral to reptiles and mammals? Recent discoveries reveal amazing similarity in the sex chromosomes of distantly related animals. This project will use advanced DNA technology to explore diverse sex chromosomes in reptiles to discover whether this signifies ancient and unsuspected common ancestry, or the convergent redeployment of genes and chromosomes predisposed to determine sex.
Gene-environment interactions in reptile sex determination. Sex in many reptiles-crocodiles, marine and freshwater turtles, lizards, tuatara-depends on temperature in the nest. This project will examine poorly understood interactions between genes and temperature in determining sex expanding knowledge of how reptiles with temperature dependent sex determination can evolve to accommodate environmental change.
Genetic control of tissue growth in animals. This project aims to understand how the animal body grows. This project expects to generate new knowledge and understanding of the genetic programs that govern the size and shape of animal tissues, through use of cutting-edge genome editing approaches in laboratory animals. Expected outcomes of this project include the production of genetically engineered animals with altered tissue growth, development of new theories for how tissue growth is normal ....Genetic control of tissue growth in animals. This project aims to understand how the animal body grows. This project expects to generate new knowledge and understanding of the genetic programs that govern the size and shape of animal tissues, through use of cutting-edge genome editing approaches in laboratory animals. Expected outcomes of this project include the production of genetically engineered animals with altered tissue growth, development of new theories for how tissue growth is normally controlled and how it can be manipulated industrially. This should provide significant benefits, impacting stem cell biology (improving stem cell production), tissue engineering (improving growth of artificial tissues), veterinary science and agriculture (improving productivity).Read moreRead less
Sex determination in dragons: Genetics, epigenetics and environment. This project aims to discover the master sex-determining gene in a reptile, how that gene is differentially regulated in males and females and by temperature, and to identify evolutionary drivers of transitions between genetic and environmental sex determination. In many reptiles, like mammals, chromosomes determine sex. In others, the temperature at which their eggs are incubated determines sex. This project will study how tem ....Sex determination in dragons: Genetics, epigenetics and environment. This project aims to discover the master sex-determining gene in a reptile, how that gene is differentially regulated in males and females and by temperature, and to identify evolutionary drivers of transitions between genetic and environmental sex determination. In many reptiles, like mammals, chromosomes determine sex. In others, the temperature at which their eggs are incubated determines sex. This project will study how temperature reverses chromosomal sex determination in dragon lizards. This could show how climatic extremes affect the biology of climate sensitive reptiles, and understand their vulnerability to climate change.Read moreRead less