Genome evolution & adaptation of the multinuclear wheat stripe rust fungus. Animals and plants package their genomes into a single nucleus within each cell. In contrast, millions of fungal species accommodate multiple nuclei containing individual haploid genomes. It is currently unknown what the evolutionary implications are for this unusual genome division into multiple nuclei. Here we explore the evolutionary consequences of genome division into multiple nuclei for the first time by applying c ....Genome evolution & adaptation of the multinuclear wheat stripe rust fungus. Animals and plants package their genomes into a single nucleus within each cell. In contrast, millions of fungal species accommodate multiple nuclei containing individual haploid genomes. It is currently unknown what the evolutionary implications are for this unusual genome division into multiple nuclei. Here we explore the evolutionary consequences of genome division into multiple nuclei for the first time by applying cutting edge genome biology tools and algorithms. The economically significant study system is the devastating wheat stripe rust fungus. This pathogen costs Australian farmers over $100 million a year. New understanding is expected to lead to better disease management, reduced fungicide applications, and increased yields.Read moreRead less
Evolution of sensory systems in the dark biosphere. This project utilises a unique Australian model system based on multiple, independently-evolved subterranean water beetles to explore the adaptive and regressive changes in the genome that occur when surface species colonise subterranean habitats. We aim to characterise and investigate the evolution of chemosensory and circadian rhythm genes, which play critical roles in the fitness of animals, including the ability to find food and mates in a ....Evolution of sensory systems in the dark biosphere. This project utilises a unique Australian model system based on multiple, independently-evolved subterranean water beetles to explore the adaptive and regressive changes in the genome that occur when surface species colonise subterranean habitats. We aim to characterise and investigate the evolution of chemosensory and circadian rhythm genes, which play critical roles in the fitness of animals, including the ability to find food and mates in a dark, thermally stable environment. Knowledge of chemosensory and circadian genetic systems and how they dynamically evolve is fundamental to a variety of fields, including the process of speciation and biological adaptation (for example, to permanent darkness, pollutants and insecticides).Read moreRead less
Defining how signalling pathways cooperate to regulate organ size. Control of organ size is essential for organ function and organism viability, and varies greatly across the animal kingdom. This project aims to understand how three important signalling pathways co-ordinately regulate organ size during development and also limit aberrant growth. By applying genomics, genetics and bioinformatics techniques, this project aims to discover a core set of growth genes that are regulated by different s ....Defining how signalling pathways cooperate to regulate organ size. Control of organ size is essential for organ function and organism viability, and varies greatly across the animal kingdom. This project aims to understand how three important signalling pathways co-ordinately regulate organ size during development and also limit aberrant growth. By applying genomics, genetics and bioinformatics techniques, this project aims to discover a core set of growth genes that are regulated by different signalling pathways and the mechanism by which transcription of these genes is repressed in order to eliminate faulty cells. Intended benefits are creation of jobs, new knowledge on fundamental principles of life and the stimulation of new research into organ size control.Read moreRead less
Can we exploit mRNA modifications to control protein expression? Genes are encoded by DNA but are transcribed into a message called RNA before they can be translated into protein. RNA can be chemically modified at a gene-specific level, and this modification has been central to the success of RNA vaccines against COVID-19. Despite the importance of these modifications in cellular life and in biotechnology, the role of the most abundant RNA modifications is unclear. This project will investigate ....Can we exploit mRNA modifications to control protein expression? Genes are encoded by DNA but are transcribed into a message called RNA before they can be translated into protein. RNA can be chemically modified at a gene-specific level, and this modification has been central to the success of RNA vaccines against COVID-19. Despite the importance of these modifications in cellular life and in biotechnology, the role of the most abundant RNA modifications is unclear. This project will investigate how we can exploit RNA modifications to modulate protein expression in a tractable single-celled organism with a small genome, Plasmodium. This information is important because understanding gene regulation is fundamental to all life, and the role of RNA modifications is emerging as integral to biotechnology.Read moreRead less
Nuclear RNA surveillance and its connection to splicing quality control. Due to the error-prone nature of RNA splicing, elaborate quality control processes ensure that only correctly spliced transcripts can leave the nucleus. It has long been known that incorrectly spliced mRNA transcripts are degraded by the nuclear RNA surveillance machinery, but how the RNA quality control machinery is connected to nuclear RNA surveillance is not known. This proposal aims to uncover the connection between the ....Nuclear RNA surveillance and its connection to splicing quality control. Due to the error-prone nature of RNA splicing, elaborate quality control processes ensure that only correctly spliced transcripts can leave the nucleus. It has long been known that incorrectly spliced mRNA transcripts are degraded by the nuclear RNA surveillance machinery, but how the RNA quality control machinery is connected to nuclear RNA surveillance is not known. This proposal aims to uncover the connection between these two important processes and will fill a significant gap in our understanding of how splicing quality control and nuclear RNA surveillance work. The project will also identify sequence features that trigger abortive splicing reactions and will thus help to improve the design of synthetic mRNAs.Read moreRead less
What drives the Anterior Expansion of the Central Nervous System? A striking and highly conserved feature of the central nervous system is that the brain is larger than the spinal cord. Despite the manifest implications this has for nervous system function, the underlying drivers are largely unknown. This project aims to investigate the mechanisms controlling anterior expansion of the central nervous system, and will generate new knowledge in the areas of nervous system development and evolution ....What drives the Anterior Expansion of the Central Nervous System? A striking and highly conserved feature of the central nervous system is that the brain is larger than the spinal cord. Despite the manifest implications this has for nervous system function, the underlying drivers are largely unknown. This project aims to investigate the mechanisms controlling anterior expansion of the central nervous system, and will generate new knowledge in the areas of nervous system development and evolution. This project aims to impact on our understanding of nervous system function, develop bioinformatics tools with broad utility within the biosciences field, strengthen Australia’s international standing in the developmental neuroscience, and enhance the capacity for interdisciplinary international collaborations.Read moreRead less
Asgard archaea: the first eukaryotic cells? . This project aims to uncover the role of unique microorganisms (Asgard archaea) in the origin of eukaryotes. These archaea may represent a ‘missing-link’ in eukaryotic evolution and are in abundance in the stromatolites in Shark Bay, Western Australia. Employing an innovative and interdisciplinary approach of cutting-edge molecular biology and high-resolution microscopy, this project expects to generate insights into fundamental aspects of evolution ....Asgard archaea: the first eukaryotic cells? . This project aims to uncover the role of unique microorganisms (Asgard archaea) in the origin of eukaryotes. These archaea may represent a ‘missing-link’ in eukaryotic evolution and are in abundance in the stromatolites in Shark Bay, Western Australia. Employing an innovative and interdisciplinary approach of cutting-edge molecular biology and high-resolution microscopy, this project expects to generate insights into fundamental aspects of evolution and cell biology. Expected outcomes include the discovery of unique branches of life and the proposal of new models for the emergence of eukaryotes. This research should allow for benefits across a spectrum of environmental and social gains, including improved ties with Indigenous communities.Read moreRead less
Assembling the building blocks in the blueprint of the embryonic head. This project aims to profile and impute the genome activity and validate the cellular and molecular mechanism underpinning the generation, in time and space, of diverse types of tissues that constitute the building blocks of the embryonic head. The knowledge gain enriches our understanding of the early steps of head formation during embryogenesis in the context of the niche conditions associated with the acquisition of progen ....Assembling the building blocks in the blueprint of the embryonic head. This project aims to profile and impute the genome activity and validate the cellular and molecular mechanism underpinning the generation, in time and space, of diverse types of tissues that constitute the building blocks of the embryonic head. The knowledge gain enriches our understanding of the early steps of head formation during embryogenesis in the context of the niche conditions associated with the acquisition of progenitor state, enhancement of lineage propensity, and driving early lineage differentiation. Expected outcome of this research on the developmental biology of a model organism provides a framework of the mechanism of establishing a blueprint of development that may be conserved across multiple mammalian species.Read moreRead less