Characterisation of a major quantitative trait locus on wheat chromosome 3BL responsible for Fusarium crown rot resistance. Fusarium crown rot (FCR) is a serious wheat disease in Australia and worldwide. Our team has identified a major chromosome region controlling this disease. This project is proposing to develop DNA markers for marker assisted breeding, to understand the genetic mechanism of resistance and to identify genes responsible for resistance to the disease.
Physiological and genetic mechanisms underlying tolerance of bread wheat to ion toxicities. Ion toxicities associated with acidic or alkaline soils and waterlogging cost about $190 million per year in lost yield in Western Australia alone. Soil ameliorants and agricultural measures to deal with these constraints are non-existent (B toxicity in alkaline sodic subsoils), non-effective (liming of acidic subsoils), expensive (drainage for waterlogged soils) or a combination of the above. This projec ....Physiological and genetic mechanisms underlying tolerance of bread wheat to ion toxicities. Ion toxicities associated with acidic or alkaline soils and waterlogging cost about $190 million per year in lost yield in Western Australia alone. Soil ameliorants and agricultural measures to deal with these constraints are non-existent (B toxicity in alkaline sodic subsoils), non-effective (liming of acidic subsoils), expensive (drainage for waterlogged soils) or a combination of the above. This project will characterise wheat genotypes for tolerance to ion toxicities and will lay the groundwork for deliberate breeding effort toward pyramiding tolerance to ion toxicities in elite germplasm.Read moreRead less
Physiological and molecular characterisation of salinity tolerance in chickpea. Chickpea is a grain legume often grown in rotation with cereal crops to enhance profitability and environmental sustainability of broadacre cropping systems in Australia, and elsewhere. Chickpea is sensitive to salinity, and thus can not be grown on soils affected even by mild salinity. Limited grain legume options currently exist for these soils. This project will improve salt tolerance in chickpea and thus allow it ....Physiological and molecular characterisation of salinity tolerance in chickpea. Chickpea is a grain legume often grown in rotation with cereal crops to enhance profitability and environmental sustainability of broadacre cropping systems in Australia, and elsewhere. Chickpea is sensitive to salinity, and thus can not be grown on soils affected even by mild salinity. Limited grain legume options currently exist for these soils. This project will improve salt tolerance in chickpea and thus allow it to be grown in areas too saline for current cultivars. The research contributes to the National Research Priority of 'An Environmentally Sustainable Australia', as new cultivars of chickpea with improved salt tolerance will enhance the profitability and sustainability of rotational cropping systems in Australia.Read moreRead less
Gene identification and genetic marker analysis of herbicide resistance in Lolium rigidum. Herbicide resistance threatens the vibrant, export-focused Australian cropping industry and environmental sustainability. The Australian herbicide resistance problem is far greater than elsewhere in the world. Herbicide resistance must be avoided, managed and reversed to ensure profitable agriculture and an environmentally sustainable landscape. This research will contribute to the national wealth through ....Gene identification and genetic marker analysis of herbicide resistance in Lolium rigidum. Herbicide resistance threatens the vibrant, export-focused Australian cropping industry and environmental sustainability. The Australian herbicide resistance problem is far greater than elsewhere in the world. Herbicide resistance must be avoided, managed and reversed to ensure profitable agriculture and an environmentally sustainable landscape. This research will contribute to the national wealth through helping ensure the profitability of vital Australian export agricultural industries and the sustainability of the soil/land resource. This proposal will ensure that Australia leads international herbicide resistance research and will enable the capture of intellectual property and commercial opportunities. Read moreRead less
A new approach to control of plant parasitic nematodes. Plant parasitic nematodes are the fourth most important plant pathogens worldwide. The aim of this project is to develop ?proof-of-concept? of a new strategy for nematode control, based on a synthetic ?cell death? resistance gene, in which tight specificity of expression of the resistance gene is provided using two gene promoters. The work focusses on finding the best combination of promoters which are switched on by infection of plants w ....A new approach to control of plant parasitic nematodes. Plant parasitic nematodes are the fourth most important plant pathogens worldwide. The aim of this project is to develop ?proof-of-concept? of a new strategy for nematode control, based on a synthetic ?cell death? resistance gene, in which tight specificity of expression of the resistance gene is provided using two gene promoters. The work focusses on finding the best combination of promoters which are switched on by infection of plants with nematodes. It is based on an Australian patent which has wide applicability in plant biotechnology. Nematode control will benefit horticultural and broadacre farming by reducing pathogen losses and improving quality.Read moreRead less
Invesitgation of environmental staining and storage discolouration in Faba Bean. Faba beans are an important pulse crop in Australia. They are exported to the Middle East and Europe for human consumption where buff coloured beans are desired. A third of beans become discoloured in storage. These are downgraded to stock feed with a loss of $50 per ton to the grower. Currently little is known about the causes. Environmental factors and selected genotypes will be assessed to determine the potential ....Invesitgation of environmental staining and storage discolouration in Faba Bean. Faba beans are an important pulse crop in Australia. They are exported to the Middle East and Europe for human consumption where buff coloured beans are desired. A third of beans become discoloured in storage. These are downgraded to stock feed with a loss of $50 per ton to the grower. Currently little is known about the causes. Environmental factors and selected genotypes will be assessed to determine the potential causes of discoluration. Analytical techniques will ascertain the discolouration process and the compounds produced. The aim is to provide growers with information on management strategies and breeders of strain resistant genotypes.Read moreRead less
Genomic Synteny in Legumes; Application to Crop Breeding. Synteny is defined as the degree of colinearity between the order of orthologous genes in chromosomes of related species. New data suggests that legumes share widespread synteny. Extensive genomic resources are being accumulated for the model legume, Medicago truncatula including the full genome sequence. We propose to use these resources to uncover patterns of synteny between M. truncatula and the cultivated legumes chickpeas, lupins, ....Genomic Synteny in Legumes; Application to Crop Breeding. Synteny is defined as the degree of colinearity between the order of orthologous genes in chromosomes of related species. New data suggests that legumes share widespread synteny. Extensive genomic resources are being accumulated for the model legume, Medicago truncatula including the full genome sequence. We propose to use these resources to uncover patterns of synteny between M. truncatula and the cultivated legumes chickpeas, lupins, faba-beans, lentils and lucerne. In addition to revealing patterns of chromosomal evolution in this large plant family, we will generate genetic maps and molecular markers for use in practical plant breeding of these important crops.Read moreRead less
Molecular dissection of resistance to subterranean clover mottle virus using Medicago truncatula. Plant virus diseases cause economic losses in most crop plants. Grain and pasture legumes are an important component of Australian agricultural cropping sytems, and provide human food and animal feed: they also contribute to higher yields of crops like cereals when grown in rotation, by providing nitrogen and a disease break. In this project, the 'model' legume, Medicago truncatula ('Barrel Medic') ....Molecular dissection of resistance to subterranean clover mottle virus using Medicago truncatula. Plant virus diseases cause economic losses in most crop plants. Grain and pasture legumes are an important component of Australian agricultural cropping sytems, and provide human food and animal feed: they also contribute to higher yields of crops like cereals when grown in rotation, by providing nitrogen and a disease break. In this project, the 'model' legume, Medicago truncatula ('Barrel Medic') will be used to identify a new virus resistance gene. The knowledge gained will be used to improve resistance to viruses in crop legumes, so reducing losses and aiding sustainability of production. This will support rural communities and the national economy.Read moreRead less
Isolation and characterization of cell signalling systems that activate or suppress apoptosis in pathogenic and symbiotic fungal:plant interactions. The key roles of programmed cell death (PCD) in plant disease are becoming apparent. This project will test the hypotheses that successful colonisation by arbuscular mycorrhizae in plant roots requires the plant to up-regulate inhibitors of PCD; that susceptibility in plants to necrotrophic fungal pathogens requires triggering of PCD; and that resis ....Isolation and characterization of cell signalling systems that activate or suppress apoptosis in pathogenic and symbiotic fungal:plant interactions. The key roles of programmed cell death (PCD) in plant disease are becoming apparent. This project will test the hypotheses that successful colonisation by arbuscular mycorrhizae in plant roots requires the plant to up-regulate inhibitors of PCD; that susceptibility in plants to necrotrophic fungal pathogens requires triggering of PCD; and that resistance is the result of activation of inhibitors of PCD. This international project will have important implications biologically and economically for control of plant disease and symbiosis, will train early career researchers in an area of international expertise and will strengthen collaboration between the US and Australian research groupRead moreRead less
The regulation and role of dual targeted proteins in plant cells. Plant cells are the factories that provide the food we eat, the air we breath, play a critical role in a balanced environment and provide energy in a sustainable manner. The varied use of plants and plant products is underpinned by an understanding of biochemistry that takes place in plant cells. This proposal is aimed at understanding how some proteins function in more than one location in the multi-compartmentalised plant cell b ....The regulation and role of dual targeted proteins in plant cells. Plant cells are the factories that provide the food we eat, the air we breath, play a critical role in a balanced environment and provide energy in a sustainable manner. The varied use of plants and plant products is underpinned by an understanding of biochemistry that takes place in plant cells. This proposal is aimed at understanding how some proteins function in more than one location in the multi-compartmentalised plant cell biochemical factory. The knowledge that is generated from this research can be used to underpin innovative use of plants within Australia's plant based industries. Furthermore it provides a rich intellectual training environment for students and postdoctoral researchers.Read moreRead less