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The role of plant hormones in legume symbioses. Soil microbes can give plants access to previously unavailable but essential nutrients through symbioses. Legumes are unique as they form symbioses with both nitrogen-fixing bacteria and with mycorrhizal fungi that supply nutrients such as phosphate. This proposal will investigate the role of the plant hormones (small, mobile, potent growth regulators) in the formation of these symbiotic relationships across legume genera. An insight into the commo ....The role of plant hormones in legume symbioses. Soil microbes can give plants access to previously unavailable but essential nutrients through symbioses. Legumes are unique as they form symbioses with both nitrogen-fixing bacteria and with mycorrhizal fungi that supply nutrients such as phosphate. This proposal will investigate the role of the plant hormones (small, mobile, potent growth regulators) in the formation of these symbiotic relationships across legume genera. An insight into the common and divergent roles of hormones in these symbioses is essential to provide researchers and breeders with new tools to maximise nutrient acquisition by legumes, important crops contributing an estimated one billion Australian dollars per year to the Australian economy.Read moreRead less
Regulation of seed development in grain legumes. The seeds of grain legumes are the edible portion of the crop, but it is not understood how seed size and composition are regulated. This project will determine the mechanisms by which plant hormones affect seed development, providing a basis for improving yields.
Hormonal regulation of plant growth. Plant architecture is a key characteristic in determining crop success. This project will determine how plant architecture is regulated by plant hormones and their interactions, to ensure optimal adaptation of crops to environmental and agronomic changes.
Decoding the signals in legume symbioses: investigating the role of plant hormones. Plants form intimate relationships with soil microbes that give plants access to previously unavailable but essential nutrients. Legumes are major Australian crops for fodder, grain and nutrients, and are unique in forming symbioses with both nitrogen-fixing bacteria and with mycorrhizal fungi that supply nutrients such as phosphate. This project aims to determine the role of plant hormones (small, mobile, potent ....Decoding the signals in legume symbioses: investigating the role of plant hormones. Plants form intimate relationships with soil microbes that give plants access to previously unavailable but essential nutrients. Legumes are major Australian crops for fodder, grain and nutrients, and are unique in forming symbioses with both nitrogen-fixing bacteria and with mycorrhizal fungi that supply nutrients such as phosphate. This project aims to determine the role of plant hormones (small, mobile, potent growth regulators) in the formation of these relationships. In particular, the role of interactions between hormones and other novel plant signals will be determined. An insight into the common and divergent roles of hormones in these symbioses is essential to provide new tools to maximise nutrient acquisition.Read moreRead less
Discovering the activity of novel CLE peptide hormones that regulate legume nodulation. This project aims to functionally characterise novel peptide hormones that regulate the number of nitrogen-fixing root nodules that legumes form. Findings will enhance the current nodulation model and could help to alleviate our reliance on expensive, often polluting, nitrogen-fertilisers by helping to optimise the nodulation process in agriculture.
Discovery of the systemic regulator of legume nodulation. This project aims to discover the novel, shoot-derived factor that legumes produce to regulate the number of nitrogen-fixing root nodules they form. Outcomes will enhance the current nodulation model and could help optimise the process in agriculture, which would help alleviate current reliance on nitrogen-fertilisers that are expensive and pollute.
Unique plant hormone responses: the key to nitrogen-fixing nodules. This project aims to build a model of the signals that regulate root nodule formation, unique root organs formed by some plants that host nitrogen-fixing bacteria. Nitrogen is often limited in the soil and agriculture relies on nitrogen fertiliser. Sustainable sources of plant nutrients are required to ensure food security and minimise the environmental impact of intensive farming. This project will provide fundamental informati ....Unique plant hormone responses: the key to nitrogen-fixing nodules. This project aims to build a model of the signals that regulate root nodule formation, unique root organs formed by some plants that host nitrogen-fixing bacteria. Nitrogen is often limited in the soil and agriculture relies on nitrogen fertiliser. Sustainable sources of plant nutrients are required to ensure food security and minimise the environmental impact of intensive farming. This project will provide fundamental information on why some species can form nitrogen-fixing nodules by examining the role of plant hormones. This will build the knowledge base required to potentially expand this symbiosis into non-legumes, harnessing the huge advantage nodule forming species have in staple crops.Read moreRead less
Genetics, genomics and evolution of flowering time control in legumes. Flowering in plants is strongly regulated by environmental factors, with important consequences for their natural distribution and use in agriculture. This project will characterise genes, genetic diversity and molecular mechanisms that control flowering in legumes, contributing to fundamental biology, crop improvement and research training.
The role of the ammonium transport bHLHm1/AMF1 regulatory loci in plants. This project aims to investigate the role of a regulatory locus in the regulation of ammonium transport in plants and the interacting genetic and biochemical signalling promoting the interaction. Ammonium is an important nutrient source for plant growth and development. It has been recently identified that a new transport mechanism (AMF1 ) mediates ammonium transport across legume root nodule cellular membranes. AMF1 was i ....The role of the ammonium transport bHLHm1/AMF1 regulatory loci in plants. This project aims to investigate the role of a regulatory locus in the regulation of ammonium transport in plants and the interacting genetic and biochemical signalling promoting the interaction. Ammonium is an important nutrient source for plant growth and development. It has been recently identified that a new transport mechanism (AMF1 ) mediates ammonium transport across legume root nodule cellular membranes. AMF1 was identified through a transcriptional interaction with a membrane localised bHLHm1 transcription factor. Both bHLHm1 and AMF1 belong to a unique chromosomal regulatory locus common across sequenced dicot plant species.Read moreRead less
Carbon flux and its regulation in metabolic networks. Allocation of photo-assimilates throughout metabolic networks are central to a plants ability to cope with changes in its environment. This project will combine the use of quantitative molecular, chemical and imaging techniques to characterise the flux of resources and its regulation through metabolic networks of Australian native and crop plants.