Mechanisms and management of inducible tolerance to synthetic insecticides and Bacillus thuringiensis (Bt)-formulations in Australian populations of diamondback moth. Insects have a cunning ability to respond to damaging environments by evolving genetic resistance or mobilising metabolic tolerance mechanisms. Recent observations of inducible tolerance to synthetic and biopesticides, which can be transmitted to offspring by a maternal effect has the potential to cause ecological and economic prob ....Mechanisms and management of inducible tolerance to synthetic insecticides and Bacillus thuringiensis (Bt)-formulations in Australian populations of diamondback moth. Insects have a cunning ability to respond to damaging environments by evolving genetic resistance or mobilising metabolic tolerance mechanisms. Recent observations of inducible tolerance to synthetic and biopesticides, which can be transmitted to offspring by a maternal effect has the potential to cause ecological and economic problems in agricultural production. We will use field-collected Diamondback moth (DBM), a major insect pest in canola and brassica vegetable crops, to investigate the genetic implications of inducible tolerance for the integrated management of DBM and for the design of new resistance management strategies.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
Seed quality and disease resistance trait mapping in lentil (Lens culinaris ssp. culinaris). To protect and increase our world lentil market share, the mission of the Australian lentil breeders is to develop lentil varieties with superior seed qualities. Three highly desirable seed quality traits are; fatter and larger shape, better splitting efficiency and resistance to blemishing by ascochyta blight infection. To speed up the development of varieties with these traits, the genetic loci governi ....Seed quality and disease resistance trait mapping in lentil (Lens culinaris ssp. culinaris). To protect and increase our world lentil market share, the mission of the Australian lentil breeders is to develop lentil varieties with superior seed qualities. Three highly desirable seed quality traits are; fatter and larger shape, better splitting efficiency and resistance to blemishing by ascochyta blight infection. To speed up the development of varieties with these traits, the genetic loci governing them will be characterised and closely associated molecular markers identified. Markers will be validated for their use in marker-assisted breeding programs via back-crossing and field and glass house testing.Read moreRead less
Pyramiding ascochyta blight (A. rabiei) resistance in chickpea. Ascochyta blight (A. rabiei) is the most devastating disease that affects chickpea production in Australia. This project will produce enhanced chickpea breeding germplasm with sustainable resistance to ascochyta blight. This will be achieved through the enrichment of highly informative genome linkage maps and the development of molecular markers closely associated with novel resistance genes. Markers will be used to screen backcross ....Pyramiding ascochyta blight (A. rabiei) resistance in chickpea. Ascochyta blight (A. rabiei) is the most devastating disease that affects chickpea production in Australia. This project will produce enhanced chickpea breeding germplasm with sustainable resistance to ascochyta blight. This will be achieved through the enrichment of highly informative genome linkage maps and the development of molecular markers closely associated with novel resistance genes. Markers will be used to screen backcrossed populations for novel resistance in order to pyramid the genes involved. The most resistant lines, to all of the A. rabiei pathotypes, will be selected for use in future resistance breeding programs.Read moreRead less