Marsupial germ cells and genes. Germ cells are the most fascinating cells in the body, since theirs is the unique responsibility for transmitting life from generation to generation. Studies in mice have suggested that position in the embryo determines their origin, but the early embryology of the mouse is so different from that of other mammals that the events need confirming and extending in another species. The simplified embryology of the tammar wallaby makes it ideal for studying one of the ....Marsupial germ cells and genes. Germ cells are the most fascinating cells in the body, since theirs is the unique responsibility for transmitting life from generation to generation. Studies in mice have suggested that position in the embryo determines their origin, but the early embryology of the mouse is so different from that of other mammals that the events need confirming and extending in another species. The simplified embryology of the tammar wallaby makes it ideal for studying one of the most fundamental questions in the whole of biology: what is the basis for the primal distinction between sex and soma?Read moreRead less
How does the unilaminar blastocyst form an embryo? Marsupials are synonymous with Australia and they are scientifically amazing. An understanding how the single-layered marsupial blastocyst cells are directed to form the complex organisation of an embryo would help us understand the biology underlying the developmental potential of all cells. Understanding these processes is not only of great fundamental interest to developmental biology but also for the development of embryonic stem cell lines. ....How does the unilaminar blastocyst form an embryo? Marsupials are synonymous with Australia and they are scientifically amazing. An understanding how the single-layered marsupial blastocyst cells are directed to form the complex organisation of an embryo would help us understand the biology underlying the developmental potential of all cells. Understanding these processes is not only of great fundamental interest to developmental biology but also for the development of embryonic stem cell lines. This research will continue Australia's high profile in reproductive biology using one of our iconic native mammals. A greater understanding of marsupial reproduction will also contribute to management of our threatened marsupial populations.Read moreRead less
Identification of nuclear reprogramming factors in oocyte cytoplasm. The mature oocyte contains dominant factors that are capable of erasing tissue specific gene expression profiles of somatic cells. These reprogramming factors would be valuable for dedifferentiation of cells and for nuclear transfer in animal cloning. The research involves determination of reprogramming factors present in active cytoplasm following enucleation of the germinal vesicle, blockage of transcription and translation, ....Identification of nuclear reprogramming factors in oocyte cytoplasm. The mature oocyte contains dominant factors that are capable of erasing tissue specific gene expression profiles of somatic cells. These reprogramming factors would be valuable for dedifferentiation of cells and for nuclear transfer in animal cloning. The research involves determination of reprogramming factors present in active cytoplasm following enucleation of the germinal vesicle, blockage of transcription and translation, and timed cultures. The assays will involve maintenance of reprogramming ability and erasure of somatic gene transcription. By subtractive elimination the function of isolated proteins which are involved in reprogramming will be identified for potential recombinant production.Read moreRead less
Understanding the control of male germ-line development by the germline-restrictive silencing factor in plants. The world population is currently increasing at an unprecedented rate, with a concomitant requirement to double the food production from the same amount of arable land. To ensure global political and social stability, equitably increasing sustainable food production without compromising environmental integrity remains a major challenge. This proposal investigates the molecular mechanis ....Understanding the control of male germ-line development by the germline-restrictive silencing factor in plants. The world population is currently increasing at an unprecedented rate, with a concomitant requirement to double the food production from the same amount of arable land. To ensure global political and social stability, equitably increasing sustainable food production without compromising environmental integrity remains a major challenge. This proposal investigates the molecular mechanisms underlying male germ line initiation and development in plants. Switching off male gamete development in some crop plants will create male sterile lines, which, when crossed with genetically distinct lines, will have the potential to produce hybrids that yield 20-30 percent more crop without additional inputs. Read moreRead less
Epigenetic programming of plant sperm cells. Most of the grains and seeds that form the world's food supply are the result of the successful functioning of sperm and egg cells during fertilisation. This proposal aims to investigate the nature of sperm cell genome programming in plants and unravel molecular processes that give these cells their unique identity. This innovative and challenging research will also provide an excellent opportunity for training the next generation of scientists. The o ....Epigenetic programming of plant sperm cells. Most of the grains and seeds that form the world's food supply are the result of the successful functioning of sperm and egg cells during fertilisation. This proposal aims to investigate the nature of sperm cell genome programming in plants and unravel molecular processes that give these cells their unique identity. This innovative and challenging research will also provide an excellent opportunity for training the next generation of scientists. The outcomes of this proposal will enhance Australia's international lead in this field and will pave the way toward the development of new approaches for sustaining and enhancing crop productivity under changing environmental conditions. Read moreRead less
Using integrated frontier and smart technologies to identify new drug targets for parasites causing major diseases in humans and animals. The national/community benefits are (1) enhanced focus on animal and human health biotechnology through the development of anti-parasite compounds and/or vaccines; (2) improved and sustainable control of important parasites with decreased risk of induction of drug resistance; (3) increased profitability of agricultural animal production; (4) consolidation of a ....Using integrated frontier and smart technologies to identify new drug targets for parasites causing major diseases in humans and animals. The national/community benefits are (1) enhanced focus on animal and human health biotechnology through the development of anti-parasite compounds and/or vaccines; (2) improved and sustainable control of important parasites with decreased risk of induction of drug resistance; (3) increased profitability of agricultural animal production; (4) consolidation of a technology platform for further applications in genomics and post-genomics of pathogens of global significance and construction of a pipeline for the validation of drug targets; (5) capturing the benefits from fundamental research and strengthening links between fundamental and applied research; (6) increasing the quality and quantity of scientifically skilled people in biotechnology.Read moreRead less
Automated, smart genomic data integration for the exploration of developmentally regulated molecules in parasites of major socioeconomic importance. The national/community benefits are (1) enhanced focus on animal and human health biotechnology through the development of safe anti-parasite compounds/vaccines; (2) improved and sustainable control of key parasites with decreased risk of induction of drug resistance; (3) increased profitability of agricultural animal production; (4) consolidation o ....Automated, smart genomic data integration for the exploration of developmentally regulated molecules in parasites of major socioeconomic importance. The national/community benefits are (1) enhanced focus on animal and human health biotechnology through the development of safe anti-parasite compounds/vaccines; (2) improved and sustainable control of key parasites with decreased risk of induction of drug resistance; (3) increased profitability of agricultural animal production; (4) consolidation of a technology platform for further applications in genomics and post-genomics of pathogens of global significance and construction of a pipeline for the validation of drug targets; (5) capturing the benefits from fundamental research and strengthening links between fundamental and applied research; (6) increasing the quality and quantity of scientifically skilled people in biotechnology.Read moreRead less
Genetic control of floral architecture. Different flowers have different designs, and so the design must ultimately be controlled by genes. We have identified a gene that keeps sepals separate, and promotes the initiation of petals. We think it does this by a novel growth suppression mechanism, and will now deduce its molecular and cellular basis. This will help maintain Australia's strength in fundamental plant biology. Also, by understanding how sepals and petals arise in a model laboratory sp ....Genetic control of floral architecture. Different flowers have different designs, and so the design must ultimately be controlled by genes. We have identified a gene that keeps sepals separate, and promotes the initiation of petals. We think it does this by a novel growth suppression mechanism, and will now deduce its molecular and cellular basis. This will help maintain Australia's strength in fundamental plant biology. Also, by understanding how sepals and petals arise in a model laboratory species, we can generalise for many species, including economic plants. Thus it may be possible to make designer crops through targeted genetic changes to their floral structure.Read moreRead less
Control of plant organ development by the PETAL LOSS gene of Arabidopsis. We have discovered a new gene in the model laboratory plant Arabidopsis thaliana that is involved in sepal and petal development. It encodes a transcription factor that apparently acts by repressing growth in the inter-sepal zone of flowers where petals arise. We now aim to determine how this growth suppression occurs, and whether it extends to leaves where the gene is also expressed. Control of the initiation and sculptur ....Control of plant organ development by the PETAL LOSS gene of Arabidopsis. We have discovered a new gene in the model laboratory plant Arabidopsis thaliana that is involved in sepal and petal development. It encodes a transcription factor that apparently acts by repressing growth in the inter-sepal zone of flowers where petals arise. We now aim to determine how this growth suppression occurs, and whether it extends to leaves where the gene is also expressed. Control of the initiation and sculpturing of plant organs by site-specific inhibition of growth is a newly discovered mechanism that may be useful in manipulating plant architecture.Read moreRead less
Understanding how auxin and dorsoventral patterning are coordinated in plants. This study will help reveal for the first time how the outgrowth of leaves, flowers and floral organs is coordinated by tissue patterning genes and the plant growth hormone auxin. All plants grow in this way, and our findings, made using a model laboratory plant, will be applicable to crop species as well. Thus we will both expand our core knowledge of how multicellular organisms are constructed, and also generate pos ....Understanding how auxin and dorsoventral patterning are coordinated in plants. This study will help reveal for the first time how the outgrowth of leaves, flowers and floral organs is coordinated by tissue patterning genes and the plant growth hormone auxin. All plants grow in this way, and our findings, made using a model laboratory plant, will be applicable to crop species as well. Thus we will both expand our core knowledge of how multicellular organisms are constructed, and also generate possibilities for modifying the patterns of leaf and flower development in agricultural and horticultural species. Crops with larger leaves, or flowers of different structure, may result.Read moreRead less