Genetic networks regulating gene silencing by intronic repeat expansions . Changes in the copy number of DNA repeats are associated with phenotypic variations in several species. Expansions of DNA repeats underlie several human genetic diseases, including Friedreich’s ataxia. The molecular mechanisms that mediate these genetic abnormalities are currently unclear. This project aims to identify the novel genetic pathways and mechanisms mediating these genetic disorders. Using a plant model in an .... Genetic networks regulating gene silencing by intronic repeat expansions . Changes in the copy number of DNA repeats are associated with phenotypic variations in several species. Expansions of DNA repeats underlie several human genetic diseases, including Friedreich’s ataxia. The molecular mechanisms that mediate these genetic abnormalities are currently unclear. This project aims to identify the novel genetic pathways and mechanisms mediating these genetic disorders. Using a plant model in an innovative way this project will discover novel genes, uncover fundamental molecular mechanisms and reveal the genetic networks that govern gene silencing caused by triplet repeat expansions. This project, in addition to revealing fundamental biological mechanisms, will also have implications for human disease.
Read moreRead less
The role of long non-coding RNAs in the epigenetic control of gene expression during endosperm development in plants. Elucidating the molecular events underlying the biology of seed development is important in both understanding plant development and in developing new methods to enhance the productivity and qualities of grain crops. In recent years it has become clear that various classes of non-coding RNAs have important roles in gene regulation. Of these non-coding RNAs, small RNAs (20-25 nucl ....The role of long non-coding RNAs in the epigenetic control of gene expression during endosperm development in plants. Elucidating the molecular events underlying the biology of seed development is important in both understanding plant development and in developing new methods to enhance the productivity and qualities of grain crops. In recent years it has become clear that various classes of non-coding RNAs have important roles in gene regulation. Of these non-coding RNAs, small RNAs (20-25 nucleotides) are beginning to be understood however less is known about the role and complexity of long non-coding RNAs. This project would identify new regulators of seed development that may lead to novel methods to increase grain yields, ultimately benefitting the Australian grains industry.Read moreRead less
Systemic gene silencing in Arabidopsis, and relevance to plant biology. Gene silencing is a highly conserved process in plants and animals. It is of fundamental importance to gene regulation, virus defence, genome response to environment, and genome evolution. Remarkably, when gene silencing is triggered in plants it can spread throughout the organism. The aim of this project is to define the mechanism of intercellular movement of gene silencing in plants, and its relevance to plant growth and d ....Systemic gene silencing in Arabidopsis, and relevance to plant biology. Gene silencing is a highly conserved process in plants and animals. It is of fundamental importance to gene regulation, virus defence, genome response to environment, and genome evolution. Remarkably, when gene silencing is triggered in plants it can spread throughout the organism. The aim of this project is to define the mechanism of intercellular movement of gene silencing in plants, and its relevance to plant growth and defence against pathogens. Expected outcomes include increased understanding of intercellular genetic signalling in plants and its role in plant growth and disease resistance. The findings may also shed new light on mechanisms of gene silencing in animals.Read moreRead less