Integrated genetic regulation of photomorphogenesis in Pisum. This project will use a molecular genetic approach in garden pea to investigate the roles of photoreceptors that mediate developmental responses to light. It will define gene families encoding phytochrome, cryptochrome and phototropin photoreceptors, characterise photoreceptor gene expression, and identify mutants with impaired response to light. The mutants will be used in molecular, physiological and biochemical studies to examine h ....Integrated genetic regulation of photomorphogenesis in Pisum. This project will use a molecular genetic approach in garden pea to investigate the roles of photoreceptors that mediate developmental responses to light. It will define gene families encoding phytochrome, cryptochrome and phototropin photoreceptors, characterise photoreceptor gene expression, and identify mutants with impaired response to light. The mutants will be used in molecular, physiological and biochemical studies to examine how photoreceptors control and co-ordinate development throughout the plant via effects on plant hormone synthesis and response. Results from the project will be of practical importance in manipulating key aspects of plant growth to better suit particular environmental and agronomic objectives.Read moreRead less
The role of plant hormones in arbuscular mycorrhizal symbiosis. The vast majority of plant species can form a beneficial symbiosis with specialised soil fungi, an association that can enhance the uptake of nutrients from the soil, improve tolerance to drought and disease and minimise soil erosion. An understanding of how plants establish and regulate this important symbiosis has the potential to contribute to the development of productive and sustainable farming systems by making efficient use o ....The role of plant hormones in arbuscular mycorrhizal symbiosis. The vast majority of plant species can form a beneficial symbiosis with specialised soil fungi, an association that can enhance the uptake of nutrients from the soil, improve tolerance to drought and disease and minimise soil erosion. An understanding of how plants establish and regulate this important symbiosis has the potential to contribute to the development of productive and sustainable farming systems by making efficient use of the limited water resources, reducing soil erosion, reducing reliance on pesticides and fertilisers and producing more nutritious fruits, vegetables and grains.Read moreRead less
Systemic control of nodule proliferation. We aim to clone and characterize the functions of the supernodulation (NTS-1) locus of soybean using positional cloning and functional genomics approaches. Supernodulation fascinatingly results from a mutant Nts-1 gene functioning in the shoot, although the phenotype is expressed as excessive nodule proliferation in the root. The cloned gene will be used to monitor expression changes after inoculation with Bradyrhizobium, treatment with nitrate, nod-fac ....Systemic control of nodule proliferation. We aim to clone and characterize the functions of the supernodulation (NTS-1) locus of soybean using positional cloning and functional genomics approaches. Supernodulation fascinatingly results from a mutant Nts-1 gene functioning in the shoot, although the phenotype is expressed as excessive nodule proliferation in the root. The cloned gene will be used to monitor expression changes after inoculation with Bradyrhizobium, treatment with nitrate, nod-factor, xylem exudates and phytohormones. We will use RT-PCR, in situ hybridisation and reporter gene expression in transgenic plants. Microarray analysis of soybean ESTs (4200 arrayed) will analyse concurrent gene expression changes in both root and shoot.Read moreRead less
Genetic and molecular analysis of long-distance gene silencing in Arabidopsis. Gene silencing is a surveillance mechanism in plants and animals to ensure that all genes are switched on or off at the right time. It is also a defence mechanism against viruses. Perturbation of gene silencing can be a cause of genetic diseases, and conversely, gene silencing has immense potential as a therapeutic tool for correcting genetic diseases and curing viral diseases. When silencing is triggered against a ge ....Genetic and molecular analysis of long-distance gene silencing in Arabidopsis. Gene silencing is a surveillance mechanism in plants and animals to ensure that all genes are switched on or off at the right time. It is also a defence mechanism against viruses. Perturbation of gene silencing can be a cause of genetic diseases, and conversely, gene silencing has immense potential as a therapeutic tool for correcting genetic diseases and curing viral diseases. When silencing is triggered against a gene or virus in plants, genetic signals are transmitted throughout the organism to systemically switch off the specific gene or virus. Expected long-term national/community benefits from understanding gene silencing are wide-ranging, from improved crops through to drugs and gene therapy.Read moreRead less
CENTRE for INTEGRATIVE LEGUME RESEARCH. Legumes are essential for environmental sustainability and are important for maintaining human health. The Centre combines innovative genomic approaches to investigate the causal phenotypic links required for regulation of legume growth. The unique coexistence of multiple pluripotent meristems in shoots, roots, flowers and nodules permits the discovery of new paradigms governing legume architecture, reproductive differentiation and root-nodule developmen ....CENTRE for INTEGRATIVE LEGUME RESEARCH. Legumes are essential for environmental sustainability and are important for maintaining human health. The Centre combines innovative genomic approaches to investigate the causal phenotypic links required for regulation of legume growth. The unique coexistence of multiple pluripotent meristems in shoots, roots, flowers and nodules permits the discovery of new paradigms governing legume architecture, reproductive differentiation and root-nodule development. New knowledge of the plant growth processes through mechanistic analysis of organ induction provides the tools to optimise the legume's productivity, quality, and environment adaptation.Read moreRead less
MicroRNA control of gene expression and development in plants. Controlling a gene's activity is fundamental in biotechnology, from dissecting a gene's function to introducing desired traits in crop plants. Recently a new class of genes have been identified that are 'master-regulators' able to control the activity of many genes, and through this, they can ultimately control how an organism develops and functions. By understanding how these genes operate and the extent of their influence, not only ....MicroRNA control of gene expression and development in plants. Controlling a gene's activity is fundamental in biotechnology, from dissecting a gene's function to introducing desired traits in crop plants. Recently a new class of genes have been identified that are 'master-regulators' able to control the activity of many genes, and through this, they can ultimately control how an organism develops and functions. By understanding how these genes operate and the extent of their influence, not only will we gain greater insights into the gene regulatory networks required for multicellular life, but how we may develop methods of controlling gene activity that will have tremendous biotechnological applications.Read moreRead less